Polyisocyanates and Prepolymers - WhitChemwhitchem.co.uk/uploads/Principal Brochures/Covestro/Covestro... · Polyisocyanates and Prepolymers ... Silane-terminated 20 – 21 Desmodur®/Desmoseal

This information and our technical advice – whether verbal, in writing or by ways of trial – are given in good faith but without warranty and are subject to change without notice. This also applies where proprietary rights of third parties are involved. The information is provided by Covestro AG without assumption of any liability. Our advice does not release you from the obligation to verify the information provided – especially that contained in our safety data and technical information sheets –, to check for updates of any information provided by us and to test our products as to their suitability for the in-tended processes and uses. The application, use and processing of our products and the products manufactured by you on the basis of our technical advice are beyond our control and, therefore, entirely your own responsibility. Our products are sold in accordance with the current version of our General Conditions of Sale and Delivery.

Covestro Deutschland AG Business Unit Coatings, Adhesives and SpecialtiesD-51365 Leverkusen Germany

[email protected] Edition: 2015 · Order-No.: COV00072995 · Printed in Germany

Polyisocyanates and PrepolymersDesmodur® Bayhydur® Desmotherm® Bayhytherm®

Desmoseal® Imprafix® Baybond® Crelan®

02 Polyisocyanates and Prepolymers Polyisocyanates and Prepolymers 03

04 – 05 Our Mission: INVENTING FOR YOU

06 – 07 Building blocks for supply security, efficiency and sustainability

08 – 09 Polyisocyanates and prepolymers – Grades with shining properties

10 Applications – Highlights

Our product portfolio

12 – 15 Desmodur® TDI-based

16 – 17 Desmodur® MDI-based

18 – 19 Desmodur® PMDI-based

18 – 19 Desmoseal® S Silane-terminated

20 – 21 Desmodur®/Desmoseal® MDI-based prepolymers

22 – 25 Desmodur® N HDI-based

26 – 27 Desmodur® Z IPDI-based

28 – 29 Desmodur® Aliphatic prepolymers

30 – 31 Bayhydur® Hydrophilic modified polyisocyanates

32 – 33 Desmodur® D Hydrophilic modified polyisocyanates

32 – 33 Desmodur® Special waterborne grades

32 – 33 Desmodur® R/quix Special grades

34 – 35 Desmodur® BL Blocked grades

36 – 37 Desmotherm® Self-crosslinking baking urethane resins

38 – 39 Bayhydur® BL/Baybond® XL/Imprafix® Waterborne blocked grades

38 – 39 Bayhytherm® Waterborne self-crosslinking baking urethane resins

40 – 41 Crelan® Powder hardeners

42 – 43 Fast-lane access to polyurethane innovations

Contents

Desmodur® Bayhydur® Desmotherm® Bayhytherm®

Desmoseal® Imprafix® Baybond® Crelan®

Polyisocyanates and Prepolymers 05

INVENTINGVISIONS FOR YOU

As your leading partner for polyurethane chemistry, we know you are competing in increasingly challenging environments: Your customers are becoming more and more demanding in their expectations for quality, dura-bility, sustainability and aesthetics of products. And they have more choices. For you this means that cost pressure is rising – while innovation cycles are becoming faster and faster.

Helping you to turn this challenge into your competitive advantage is the goal that drives our daily work. We call it: INVENTING FOR YOU. But what exactly are the basic values underlying this promise? What principles enable us to improve your productivity, drive sustainability, ensure reliability and co-create future-proof businesses? First and foremost, we are curious. Because only if we listen closely to you and ask the right questions, we can respond to your individual needs with new, creative and unexpected solutions that make a real difference to you. That’s why inventing for us always starts with thinking about your unmet business challenges. It requires an indepth understanding of your needs along the whole value chain. To make sure: What we invent stands the test of time. Living up to this aspiration requires more than competencies – it calls for a corporate culture of being courageous. A culture that is defined and lived by dedicated people who cooperate to push the boundaries of invention founded on knowledge and experience. Our courage permeates our entire business – from partnerships to business models. This is also reflected in our colorful business philosophy. We appreciate partnerships that go beyond traditional black-and-white ways of acting and thinking. An attitude of open-ness that invites you to co-create new things – rather enabling you than just providing. We are optimistic and resourceful in finding solutions that inspire our customers and partners.

This set of fundamental values adds up to an unrivaled performance orien-tation to constantly strive for the better, be it through big or small changes. A true sense of business regardless of function. And a deep commitment to delivering our promise everyday. Anywhere. Again and again.

INVENTING FOR YOU.

04 Polyisocyanates and Prepolymers

Polyisocyanates and Prepolymers 07

Outstanding quality and supply security – worldwideCovestro, the world’s leading manufacturer of aliphatic and aromatic isocyanates, offers an extensive range of raw materials and services for the coatings and adhesives industry. This allows the very latest technology to be used extremely effectively for a variety of applications. Thanks to its unique setup and worldwide network of state-of-the-art production sites, R&D facilities and customer technical centers, industry-leading supply chain setup, global orientation and local stocks, extremely large product portfolio, highest health, safety and environmental (HSE) standards, as well as tailored supply chain flexibility with short lead times, Covestro offers the industry unrivaled supply security and assured quality.

Solutions to enhance your process efficiencyNowadays, the quality demands made on industrial processes are very high. But at the time, there is a clear need to cut costs. Both goals can be achieved by increasing process efficiency. At Covestro we have a wide range of solutions designed to enhance your process efficiency. Why not take advantage of our know-how? These solutions will be good for your bottom line.

High coating performance – enabled by natureSustainability drives innovation at Covestro. We are committed to optimizing our manufacturing processes, reducing the impact of logistics, and enabling sustainability along the value chains. Renewable feedstocks offer opportunities for developing more sustainable building blocks for coating solutions – with significant potential for reducing the carbon footprint of end products while also reducing our overall dependence on fossil-based resources. But to make more sustainable solutions not just possible but also economically feasible, the performance of all our feedstocks needs to satisfy high industry standards. To this end, we are evaluating the use of renewable raw materials and will enlarge our product portfolio with new bio-based and mid- to long-term cost-competitive products, provided the raw materials become commercially available. In all these efforts we are committed to focusing on products that perform at least as well as es-tablished products but are at the same time more sustainable.

Building blocks for supply security, efficiency and sustainability

06 Polyisocyanates and Prepolymers


Pioneering polyurethane chemistryEver since the discovery by Otto Bayer of the poly isocyanate-polyaddition process in 1937, Bayer – now Covestro – has pioneered poly urethane chemistry. 50 years ago, Bayer – now Covestro – developed the first applications using polyisocya-nates for the coatings and adhesives sectors. We work closely with our customers to systematically advance the state of the art in polyurethane techno-logy. Using market-oriented research and develop-ment, we specifically adapt our product portfolio to our customers’ increasingly stringent requirements. Together with you, we want to continue our suc-cessful journey along this path.

Wide variety of applicationsOur polyisocyanates comprise a broad range of products for one and two-component (1K/2K) polyurethane systems used in numerous applica-tions. Whether as crosslinkers for 2K polyurethane coatings and adhesives, blocked polyisocyanates for 1K polyurethane baking coatings or hydro- philized polyisocyanates as crosslinkers for water- reducible polyurethane systems, our products come into play wherever crosslinking is used to achieve high resistances and reliable adhesion under efficient conditions. Our solutions are in use today in a variety of applications, such as automotive OEMs, automotive refinishing and coatings for wood, industrial goods and plastics. They are also used in reactive adhesives, textile coatings, and anticorrosion coatings.

Customized propertiesGloss, leveling, scratch resistance, hardness and flexibility can be precisely adjusted by the choice of polyisocyanate and polyol. Chemical resistance, adhesion, light fastness and weather stability are additional properties that can be in-dividually adapted to your specific requirements. Moreover, coatings with easy-to-clean, soft-touch or reflow properties can also be produced through smart formulations.

Flexibility in prepolymersOur product range of prepolymers comprises aromatic and aliphatic NCO- and silane terminated products. These prepolymers make a wide range of properties possible in coatings, adhesives and sealants. The typical areas of application include wood coatings, corrosion protection, floor coatings, elastic adhesives in transportation, parquet adhesives, engineered wood constructions, flex ible film lamination and sealants. Prepolymers with a low fraction of non-polymer-bound components open up formu-lation options for producing reactive polyurethane adhesive and sealants that are not subject to labeling requirements.

Grades with shining properties

Polyisocyanates and prepolymers:


Highlights

... Marine coatings

... Adhesives for modern timber constructions

... Sealant applications

... Coatings of glass

... Coating of wood and furniture

... Automotive coatings

... Floor coatings

... Coating of agriculture equipments

... Coatings of plastics

Applications


Desmodur®

Desmodur® for coatings and adhesives.

Desmodur® T65N 48 67.0 3 2 87 100/40

Desmodur® T80 48 80.5 3 2 87 100/40 Stabilizer: Irganox® 1076 FD

Desmodur® T100 48 ≥ 99.0 3 2 87 20/20 Stabilizer: Irganox® 1076 FD

NCO APPROX. [WT. %]

VISC. AT 25 °C APPROX. [mPa • s]

EQUIVALENTWEIGHT

PROPERTIES

2,4-TDI CONTENT [WT. %] FUNCTIONALITY HC MAX./ACIDITY MAX. [mg/kg Cl–] / [mg/kg HCl]

SUPPLY FORM APPROX. [%]

TYPE NCO (SUPPLY FORM) APPROX. [%]


INDUSTRIAL FLOOR WALL

Desmodur® L 75 TDI Adduct 75 EA 13.3 315 1,600Standard crosslinker with broad range of applications, e.g. chemically resistant coatings, anti-corrosion coat-ings, industrial coatings, wood and furniture finishes, concrete coatings

Desmodur® L 67 MPA/X TDI Adduct 67 MPA/X 11.9 350 1,600 See L 75

Desmodur® L 67 BA TDI Adduct 67 BA 11.9 350 600 See L 75

Desmodur® IL BA TDI Isocyanurate 51 BA 8.0 525 2,000 Very hard and very fast-drying coatings for wood, furni-ture and paper

Desmodur® IL EA TDI Isocyanurate 51 EA 8.0 525 700 See IL BA

Desmodur® IL 1351 BA TDI Isocyanurate 51 BA 8.0 525 1,300 See IL BA

Desmodur® IL 1351 EA TDI Isocyanurate 51 EA 8.0 525 350 See IL BA

Desmodur® IL 1451 BA TDI Isocyanurate 51 BA 7.4 565 250 Like Desmodur® IL 1351 BA but with improved compatibility

Desmodur® IL 1451 EA TDI Isocyanurate 51 EA 7.4 565 110 Like Desmodur® IL 1351 EA but with improved compatibility

Desmodur® HL BA TDI/HDI Isocyanurate 60 BA 10.5 400 2,200Very fast-drying coatings for wood, furniture, metal, plastic and paper with better elasticity than Desmodur® IL and better lightfastness

Desmodur® HL EA TDI/HDI Isocyanurate 60 EA 10.5 400 1,100 See HL BA

EQUIVALENT WEIGHT APPROX.

WOOD FURNITURE

PLASTICSCORROSION PROTECTION

PROPERTIES & APPLICATIONS

* = These products represent only a selection of the TDI-based products primarily used in coating applica-tions. Additional TDI-based products can be found, for example, on the Covestro CAS website: www.coatings.covestro.com

= especially suitable = suitable

Monomeric TDI products

TDI-based*


Desmodur®

Prepolymers are the reaction products of aromatic or aliphatic isocyanates and polyols, such as polyethers or polyesters. The wide variability of the isocyanate content and functionality enables the viscosity of the prepolymers and the mechanical properties of the finished products to be precisely adjusted.

Prepolymers based on TDI

Desmodur® E 15 4.4 100 — ≤ 0.5 7,000 23 n. m. LF 955 Polyether-based prepolymer for flexible coatings and membranes

Desmodur® E 14 3.3 100 — ≤ 0.5 6,800 23 n. m. LF 1,270Polyether-based prepolymer for flexible coatings and membranes, flexibilization in anti-corrosion systems

Desmodur® E 1361 MPA/X 6.8 61 MPA/X ≤ 0.4 500 23 ≤ 3 SF 615 Fast-drying 1K moisture-curing coatings, good resistance

Desmodur® E 1361 BA 6.8 61 BA ≤ 0.5 250 23 ≤ 3 SF 615 See E 1361 MPA/X

Desmodur® E 1160 MPA/X 5.4 60 MPA/X ≤ 0.4 550 23 ≤ 3 LF 775 1K moisture-curing coatings with good resistance properties

Desmodur® E 1660 5.3 60 BA ≤ 0.5 1,600 23 n. m. LF 7901K moisture-curing coatings in combination with other Desmodur® E types: good resistance prop-erties and very fast drying

NCO APPROX. [WT. %]

SOLVENT VISCOSITYAPPROX. [mPa • s]

COLOR INDEX[IODINE]


SOLIDS CONTENT[APPROX. %]

MONOMER CONTENT [WT. %]


VISCOSITY AT TEMPERATURE [°C]

FUNCTIONALITY*

* LF = Low functionality (2.0–2.8)

SF = Standard function-ality (2.8–3.6)

HF= High functionality (> 3.6) n. m.= not measured

= Butyl acetate= Caprolactane= Dimethyl ethanol amine= Ethyl acetate= Hexamethylene diisocyanate= Isobutanol= Isophorone diisocyanate= Diphenylmethane diisocyanate= Methoxypropylacetate= N-Methyl pyrrolidone

= Pentamethylen diisocyanate= Propylenglycoldiacetat = Dipropylenglycoldimethylether= Solvent naphtha = Toluene diisocyanate= Trial products= Xylene

BACPLDMEAEAHDIIBIPDIMDIMPANMP

PDIPSDAPG DMESNTDI VP LS... XP...X

LEGEND


Desmodur®

Desmodur® for coatings and adhesives.

Monomeric MDI products

Desmodur® 44M liquid 33.6 4.1 40 2 125 50/– Flexible packaging, hotmelts, sealants; additional supply form: fused and flakes

Desmodur® 44MC liquid 33.6 4.1 40 2 125 60/–Hotmelts, sealants, improved prepolymer stability; additional supply form: fused and flakes

Desmodur® LS2424 33.6 12 25 2 125 50/– Flexible packaging, hotmelts, approx. 55 % 2,4’-MDI/45 % 4,4’-MDI

Desmodur® 2460M 33.6 12 25 2 125 50/–Flexible packaging, hotmelts, approx. 55 % 2,4’-MDI/45 % 4,4’-MDI color stabilized

Desmodur® CD-S 29.5 35 25 2 — 50/–Hotmelts, sealants, modified monomeric MDI, liquid at room temperature, storage sta-ble at low temperatures

NCO APPROX. [WT. %]

VISCOSITY ATTEMPERATURE [°C]

EQUIVALENTWEIGHT


VISCOSITYAPPROX. [mPa • s]

FUNCTIONALITY* HC MAX./ACIDITY MAX. [mg/kg Cl–] / [mg/kg HCl]

Desmodur® VK5 32.5 22.5 25 LF 130 –/600 Prepolymers, high 2,4’-MDI content, good compatibility with polyethers

Desmodur® VK10 31.5 90 25 LF 135 –/1000One- & two-component adhesives, high 2,4’-MDI content, low PMDI content, good compatibility with polyethers

Desmodur® VK10L 31.5 90 25 LF 135 –/1000One- & two-component adhesives, high 2,4’-MDI content, low PMDI content good compatibility with polyethers, lower reactivity than Desmodur® VK 10,

Desmodur® VLR10 31.5 120 25 SF 135 –/200

Desmodur® VKS20 31.5 200 25 SF 135 –/200 Standard two-component adhesives

Desmodur® VKS20F 31.5 200 25 SF 135 –/200 Standard two-component adhesives (exact specification on request)

Desmodur® VKS20FH 31.5 200 25 SF 135 –/150 Standard two-component adhesives (exact specification on request)

Desmodur® 44V40L 31.0 300 25 SF 135 –/300 Standard two-component adhesives

Desmodur® 44V70L 31.3 680 25 SF 135 –/500 Standard two-component adhesives

Polymeric MDI products (PMDI products)**


SF = Standard functionality (2.8–3.6)

HF = High functionality (> 3.6)

** = These products repre-sent only a selection of the MDI-based products primarily used in coating applications. Additional MDI-based products can be found, for example, on the Covestro CAS website: www.coatings.covestro.com


Desmodur®Desmoseal®Desmodur® VL family Crosslinkers for solvent-free 2K polyurethane coatings for anti-corrosion and construction applications.

Desmoseal® S Silane-terminated polyurethanes (STPs) that combine the properties of polyurethanes with those of silicones to create a new class of prepolymers. Primarily designed to act as binders for moisture-curing sealants and elastic adhesives, these high molecular weight prepolymers consist of a polyurethane backbone and a trifunctional silane end group.

PMDI products*

SUPPLY FORM

TYPE NCO CONTENT APPROX. [%]


FLOOR WALL

Desmodur® VL MDI polyisocyanate Solvent-free 31.5 135 90 Crosslinker for solvent-free coatings, sealants and membranes

Desmodur® VL 50 MDI polyisocyanate Solvent-free 32.5 130 23Very low viscosity; same applications as Desmodur® VL but better compatibility with polyethers and lower reactivity; more flexible

Desmodur® VL 51 MDI polyisocyanate Solvent-free 32.5 130 21 See VL 50

Desmodur® VL R 10 MDI polyisocyanate Solvent-free 31.5 135 120Higher reactivity than Desmodur® VL; for solvent-free spray coatings and membranes

Desmodur® VL R 20 MDI polyisocyanate Solvent-free 31.5 135 200 See VL R 10

Desmodur® VKS 20 F MDI polyisocyanate Solvent-free 31.5 135 200Lower reactivity than Desmodur® VL R 20; for solvent-free coatings and membranes

Desmodur® XP 2551 MDI polyisocyanate Solvent-free 32 130 66 Crosslinker primarily for polyol emulsions


CORROSION PROTECTION

AUTO OEM


Silane-terminatedpolyurethanes

SOLIDS CONTENT [%]

PLASTICIZER MOLECULAR WEIGHT

Desmoseal® S XP 2636 100 — 40,000 HighSealants & adhesives, prepolymer for soft formulations with low modulus and and high elongation at break, with good elastic recovery

Desmoseal® S XP 2458 90 Mesamoll 35,000 Medium Sealants & adhesives, prepolymer for hard formulations with high modulus and medium elongation at break, with high cohesive strength

Desmoseal® S XP 2749 100 — 4,500 LowSealants & adhesives, medium to high modulus, prepolymer for adhesives, primers, waterproofing membranes, good elastic properties, low elongation at break

Desmoseal® S XP 2774 100 — 50,000 HighSealants & adhesives, prepolymer for very soft formulations with low modulus and high elongation at break, with good elastic recovery

Desmoseal® S XP 2821 100 — 20,000 Low Adhesives, prepolymer for very hard formulations with high tensile and lab shear strength

VISCOSITY AT 23 °CAPPROX. [mPa • s]


* = These products represent only a selection of the MDI-based products primarily used in coating applica-tions. Additional MDI-based products can be found, for example, on the Covestro CAS website: www.coatings.covestro.com



Desmodur®Desmoseal®Desmodur® and Desmoseal® M prepolymers are the reaction products of aromatic or aliphatic isocyanates and polyols, such as polyethers or polyesters. The wide variability of the building blocks, isocyana-te content and functionality enables the viscosity of the prepolymers and the mechanical properties of the finished products to be precisely adjusted.

Prepolymers based on MDI

Desmodur® VH 20 N 24.5 280 25 LF 170 Gymnasium floors, storage stable at low temperatures

Desmodur® E 29 24.0 220 25 LF 175 Primer for flooring applications, binder for corrosion protection

Desmodur® E XP 2753 21.5 400 23 LF 195 Corrosion protection e.g. pipe coatings

Desmodur® E 21 16.0 5,400 25 SF 260 Wood bonding, binder for corrosion protection

Desmodur® E 20100 15.7 1,100 23 LF 265 Injection resin for sealing water-conveying cracks in structures above and below ground

Desmodur® E XP 2723 15.4 1,500 25 LF 270 1K and 2K adhesives

Desmodur® E 23 15.4 1,800 23 LF 270 Wood bonding, flexible packaging, binder for corrosion protection

Desmodur® E XP 2762 15.9 2,800 23 SF 265 Wood bonding, higher reacitivity compared to E 23

Desmodur® E XP 2727 15.3 800 23 LF 275 1K and 2K binder for corrosion protection and adhesives

Desmodur® E 2200/76 9.9 2,750 25 LF 425 Flexible packaging

Desmodur® E 22 8.6 2,800 23 LF 490 Bonding of granulated rubber

Desmodur® E XP 2726 6.0 4,500 23 LF 700 Low monomer 1K PUR hotmelts

Desmoseal® M 280 2.1 33,000 23 LF 2,000 Sealants, elastic adhesives

NCO APPROX. [WT. %]

VISCOSITY ATTEMPERATURE [°C]

EQUIVALENTWEIGHT APPROX.


VISCOSITYAPPROX. [mPa • s]

FUNCTIONALITY*


SF = Standard functionality (2.8–3.6)

HF = High functionality (> 3.6)


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HO

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OCN

Desmodur®

Desmodur® N Family: Hardeners for high-performance two-component polyurethane coatings with excellent weatherability and resistance properties.

Aliphatic isocyanates – Monomers

Desmodur® H (HDI) ≥ 49.7 3 25 ≤30 2.0 84

Desmodur® I (IPDJ) ≥ 37.5 10 25 ≤30 2.0 111

Desmodur® W (H12MDI) ≥ 31.8 30 25 ≤30 2.0 131

NCO APPROX. [WT. %]

VISCOSITY APPROX. [mPa • s]

EQUIVALENT WEIGHT

FUNCTIONALITY

COLOR INDEX [HAZEN]


HDI-Biuret


TYPE VISC. AT 23 °C APPROX. [mPa • s]

NCO CONTENT ON SUPPLY FORM APPROX. [%]

AUTO-REFINISHLARGE VEHICLES

WOODFURNITURE

PARQUETTRADE

CORROSIONPROTECTION

Desmodur® N 100 HDI biuret Solvent-free 22.0 190 10,000 Weather-stable and non-yellowing topcoats

Desmodur® N 75 MPA/X HDI biuret 75 MPA/X 16.5 255 250

Outstanding weather stability and gloss retention, no yellowing; for air and force-drying automotive, wood, furniture, industrial and plastics coatings, anti-corro-sion coatings and chemically resistant coatings

Desmodur® N 75 MPA HDI biuret 75 MPA 16.5 255 250 See N 75 MPA/X

Desmodur® N 75 BA HDI biuret 75 BA 16.5 255 160 See N 75 MPA/X

Desmodur® N 3200 HDI biuret Solvent-free 23.0 185 2,500Lower viscosity than Desmodur® N 100; especially for weather-stable and non-yellowing high-solids coat-ings, structural coatings and topcoats


INDUSTRIAL COATINGS

PLASTIC COATINGS

FLOOR WALL

AUTO OEM


HDI-Trimer

Desmodur® N 3300 HDI isocyanurate Solvent-free 21.8 195 3,000

Outstanding weather stability and gloss retention, non-yellowing; for automotive OEM, automotive refinish, plastics and industrial coatings, structural coatings and topcoats

Desmodur® N 3390 BA/SN HDI isocyanurate 90 BA/SN 19.6 215 550 See N 3300

Desmodur® N 3390 BA HDI isocyanurate 90 BA 19.6 215 500 See N 3300


OCNNCO


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Desmodur®

Desmodur® N Family: Hardeners for high-grade two-component polyurethane coatings with excellent weatherability and resistance properties.

HDI-Trimer


TYPE NCO CONTENT ON SUPPLY FORM APPROX. [%]



WOODFURNITURE

PARQUETTRADE

CORROSIONPROTECTION

Desmodur® N 3600 HDI isocyanurate Solvent-free 23.0 185 1,200Low-viscosity crosslinker for weather-stable and non-yellowing high-solids and waterborne coatings for automotive refinishing, automotive OEM and industrial applications; also for structural coatings and topcoats

Desmodur® N 3790 BA HDI isocyanurate 90 BA 17.8 235 1,800Highly functional crosslinker for fast-drying, weather- stable and non-yellowing 2K-PUR coatings for automotive refinishing, automotive OEM and industrial applications

Desmodur® N 3800 HDI isocyanurate Solvent-free 11.0 380 6,000For highly elastic coatings with resistance to accelerated and outdoor weathering; combination with suitable poly-isocyanates allows variation of the elasticity using the same polyol mill base

Desmodur® N 3900 HDI iminooxadi-azinedione Solvent-free 23.5 180 730

Low-viscosity crosslinker for lightfast 2K-PUR coat-ings (high-solids/waterborne e.g. in combination with Bayhydur® types) for automotive refinishing, automotive OEM, transportation and plastics finishing applications

Desmodur® XP 2675 HDI isocyanurate Solvent-free 20.0 210 15,000Solvent-free, highly functional crosslinker for solvent- free 2K applications, outstanding weather-stability, non-yellowing

Desmodur® blulogiq 3190 HDI isocyanurate 90 BA 19.1 214 650

Thermolatent crosslinker that has standard reactivity at ambient conditions but acts as a highly catalyzed crosslinker at elevated temperatures. Baking tempera-ture of 75 °C or higher recommended. Especially for high gloss spray coatings.


INDUSTRIAL COATINGS

PLASTIC COATINGS

FLOOR WALL

AUTO OEM


HDI-Specialties

Desmodur® XP 2860 HDI allophanate Solvent-free 20.0 215 500

Flexible, low-viscosity crosslinker for weatherstable high-solids and waterborne 2K-PUR coatings e.g. in combination with Bayhydur® or Desmudur® types, espe-cially for industrial, automotive refinishing, transportation and plastic coatings

Desmodur® N 3400 HDI uretdione Solvent-free 21.8 195 150Low-viscosity crosslinker for waterborne and sol-vent-borne 2K-PUR coatings; also for moisture-curing 1K-PUR systems, for structural coatings and topcoats

Desmodur® XP 2840 HDI uretdione/trimer Solvent-free 23.0 185 500

Low-viscosity crosslinker for waterborne and sol-vent-borne 2K-PUR coatings; also for moisture-curing 1K-PUR systems, for structural coatings and topcoats

Desmodur® N 3580 BA HDI allophanate/trimer 80 BA 15.4 273 500

Highly functional crosslinker; outstanding weather stability; improved chemical and scratch resistance for automotive OEMs and plastics

Desmodur® N 3500 HDI allophanate/trimer Solvent-free 19.5 215 35,000

Highly functional crosslinker; outstanding weather stability; improved chemical and scratch resistance for direct coating (RIM)



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Desmodur®

Desmodur® Z Family: Fast-drying two-component polyurethane coatings with high chemical resistance.

Desmodur® eco N family: Two-comp polyurethane coatings with excellent

weatherability and resistance based on biobased Pentamethylen diisocyanate (PDI).




WOODFURNITURE

AUTO-REFINISH

LARGE VEHICLES

PARQUETTRADE

CORROSIONPROTECTION


INDUSTRIAL COATINGS

PLASTIC COATINGS

FLOOR WALL

AUTO OEM


IPDI-based

Desmodur® Z 4470 SN IPDI isocyanurate 70 SN 11.9 360 2,000

Fast-drying hardener for lightfast 2K-PUR coatings with high resis-tance to chemicals and weathering. For automotive OEM, refinish-ing and industrial applications. On account of its high hardness, Desmodur® Z is normally mixed with Desmodur® N products

Desmodur® Z 4470 MPA/X IPDI isocyanurate 70 MPA/X 11.9 360 1,500 See Z 4470 SN

Desmodur® Z 4470 BA IPDI isocyanurate 70 BA 11.9 360 600 See Z 4470 SN

Desmodur® XP 2565 IPDI allophanate 80 BA 12.0 350 2,800

Crosslinker for weatherstable, fast-drying high-solids and waterborne 2K-PUR coatings e.g. in combination with Bayhydur® types, for automotive refinishing and transportation applica-tions

Desmodur® XP 2489 HDI/IPDI polyisocyanate Solvent-free 21.0 200 22,500

Outstanding weatherability, gloss and improved resistance for automotive OEM and plastics; especially for ultra high solid and solvent-free applications, e.g. in-mould coating

Desmodur® XP 2838 HDI/IPDI polyisocyanate Solvent-free 21.0 200 3,000

Solvent-free crosslinker for lightfast 2K-PUR systems; as a binder for solvent-free decorative floor coatings

Desmodur® XP 2763 HDI/IPDI polyisocyanate 86 BA 10.2 412 2,100

Outstanding crosslinker for weather-stable 2K PU and polyas-partic coatings; longer pot life and extended recoating window with polyaspartic coatings

PDI-based

Desmodur® eco N 7300 PDI isocyanunate Solvent-free 21.5 195 9,50070 % renewable, outstanding weather stability and gloss reten-tion, non-yellowing; for automotive OEM, automotive refinish, plastics and industrial coatings, structural coatings and topcoats



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Desmodur®

Desmodur® prepolymers based on aliphatic isocyanates like HDI or IPDI display good weather stability and are color-stable. These unique properties are important for applications such as corrosion protection or non-yellowing coatings and adhesives.

Prepolymers based on aliphaticisocyanates

HDI PREPOLYMERS

Desmodur® E XP 2747 16.9 100 — < 0.5 2,600 23 n. m. HF 250 1K and 2K adhesives

Desmodur® XP 2617 12.5 100 — < 0.5 4,250 23 n. m. LF 3351K and 2K adhesives, bonding of granulated rubber

Desmodur® XP 2599 6.0 100 — ≤ 0.3 2,500 23 n. m. HF 700 1K and 2K coatings and adhesives

Desmodur® E 3265 MPA/SN 10.4 65 MPA/SN100 ≤ 0.26 1,200 23 ≤ 4 HF 1,700Anti-corrosion coatings, good weather stability, non-yellowing, 1K application

Desmodur® E 3370 10.0 70 MPA/SN100 ≤ 0.1 1,400 23 ≤ 80 [Hazen] HF 420Anti-corrosion coatings, good weather stability, non-yellowing, 1K application

Desmodur® E 2863 XP 11.0 100 — < 0.3 1,350 23 n. m. LF 380 Waterproofing membranes, floor coatings

IPDI PREPOLYMERS

Desmodur® VPLS 2371 3.7 100 — < 2.0 9,800 50 n. m. LF 1,135 1K sealants

Desmodur® XP 2406 2.8 80 MPA < 0.5 7,000 23 ≤ 200 [Hazen] LF 1,500Elastic coatings and sealants with very good weather stability

NCO APPROX. [WT. %]

SOLVENT VISCOSITY APPROX. [mPa • s]

COLOR INDEX [IODINE]


SOLIDS CONTENTAPPROX. [WT. %]

MONOMER CONTENT [WT. %]


FUNCTIONALITY* PROPERTIES & APPLICATIONS

* HF = High functionality (> 3.6)

LF = Low functionality (2.0 – 2.8)

n. m. = not measured


(C

HO

H

OCN

Bayhydur®

The key to easy and reliable application of waterborne 2K PU systems.

Hydrophilic modifiedpolyisocyanates





GLASS COATINGS

PLASTIC COATINGS

FLOOR WALL

Bayhydur® 3100 Hydrophilic polyisocyanate (HDI) 100 17.4 240 2,800 Versatile and economical

Bayhydur® 304 Hydrophilic polyisocyanate (HDI) 100 18.2 230 4,000 Versatile use, improved mixing

Bayhydur® 305 Hydrophilic polyisocyanate (HDI) 100 16.2 260 6,500 Easy mixing, high gloss

Bayhydur® 401-70 IPDI type hydrophilic modified 70 MPA/X 9.4 440 600 Fast-drying, chemical resistant

Bayhydur® XP 2451/1 Hydrophilic polyisocyanate (HDI) 100 20.3 207 800 Low viscosity, suited for sol-vent-free formulations

Bayhydur® XP 2487/1 Hydrophilic polyisocyanate (HDI) 100 20.6 205 5,400 Highest chemical resistance

Bayhydur® XP 2547 Hydrophilic polyisocyanate (HDI) 100 22.5 185 650Highest chemical resistance, low viscosity, suited for solvent-free formulations

Bayhydur® XP 2655 Hydrophilic polyisocyanate (HDI) 100 20.8 205 3,500 Highest chemical resistance, easy mixing

Bayhydur® XP 2700 Hydrophilic polyisocyanate (HDI) 65 PGDME 10.6 400 77 Easy mixing, high gloss

Bayhydur® XP 2759 IPDI type hydrophilic modified 70 MPA 11.0 380 6,500 Fast-drying, easy mixing, high chemical resistance

Bayhydur® 2858 XP Hydrophilic polyisocyanate (HDI/IPDI) 70 PGDA 13.3 316 500 Fast-drying, easy mixing, high

chemical resistance


INDUSTRIAL COATINGS

WOOD FURNITURE

PARQUETTRADE

CORROSIONPROTECTION

AUTO OEM




(C

HO

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Desmodur®

Desmodur® D and R: Hardeners for reactive, high-performance adhesives.

Hydrophilicmodifiedpolyisocyanates


EQUIVALENT WEIGHT APPROX. ADHESIVES

Desmodur® DA-L Hydrophilic polyisocyanate (HDI) 100 20.0 210 3,000Crosslinking agent for OH-functional polymer dispersions including polyurethane, polyvinyl acetate, polyacrylate and synthetic rubber dispersi ons. Improves resistance to heat, water, plasticizers and many solvents

Desmodur® DN Hydrophilic polyisocyanate (HDI) 100 21.8 195 1,250 See DA-L

NCO CONTENT ON SUPPLY FORM

APPROX. [%]TYPE PROPERTIES &

APPLICATIONSVISCOSITY AT 23 °C

APPROX. [mPa • s]

Special waterborne grades

Desmodur® XP 2802 Carbodiimide 40 Water approx. 1 mmol – N = C = N-/g 210 30

Crosslinking agent for aequous dispersion polymers containing carbox-yl groups. The product is characterized by its long pot life

Special grades

Desmodur® RC TDI isocyanurate 35 EA 7.0 600 3Hardener for 2K-PUR systems, especially for industrial adhesives applications. Especially pale-colored adhesives used to bond rubber materials

Desmodur® RN TDI/HDI isocyanurate 40 EA 7.2 585 11Hardener for 2K-PUR systems especially for industrial adhesives applications. For the use in adhesives to achieve significantly reduced discoloration on exposure to light

Desmodur® RE Triphenylmethan-4,4’,4”-triisocyanat 27 EA 9.3 450 3Hardener for 2K-PUR systems especially for industrial adhesives applications. Highly effective crosslinker for adhesives based on Desmocoll®, natural or synthetic rubber, with special adhesion on rubber materials

Desmodur® RFE Tris (p-isocyanatophenyl) thiophosphat 27 EA 7.2 583 3

Hardener for 2K-PUR systems especially for industrial adhesives applications. A crosslinker with very universal suitability for adhesives based on Desmocoll®, natural or synthetic rubber, with special adhe-sion on rubber materials

Desmodur® quix 175 Araliphatic polyisocyanate based on xylene diisocyanate 75 EA 11.2 375 800 Highly reactive crosslinker with aliphatic NCO groups. For the use in

adhesive for flexible packaging



(C

HO

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Desmodur®

Desmodur® BL Family: Grades for 1K PU stoving systems with high-performance polyurethane properties when combined with Desmophen®. The aliphatic grades are light-stable and weather-resistant.

Aromatic blockedprepolymers


TYPE BLOCKED NCO CONTENT ON SUPPLY FORM APPROX. [%]


INDUSTRIAL COATINGS

CAN COATINGS

Desmodur® BL 1100/1 TDI-based 100 3.0 1,400 43,000In combination with cycloaliphatic diamines for 1K stov-ing primers with high film thickness and good stone-chip resistance

Desmodur® BL 1265/1 MPA/X TDI-based 65 MPA/X 4.8 875 20,000 For primers


COILCOATINGS

GLASS COATINGS

AUTO OEM


Aliphatic thermally activated polyurethane hardener

Desmodur® BL 3175 SN HDI-based 75 SN 11.1 380 3,300 Standard product

Desmodur® BL 4265 SN IPDI-based 65 SN 8.1 520 11,000 Standard product

Desmodur® BL 5375 H12 MDI-based 75 MPA/SN 8.9 470 4,000 High flexibility

Desmodur® BL 3575/1 MPA/SN HDI-based 75 SN/MPA 10.5 400 3,600 Lower thermal yellowing and lowest color value

Desmodur® PL 350 MPA/SN HDI-based 75 SN/MPA 10.5 400 4,300 Lower thermal yellowing

Desmodur® PL 340 BA/SN IPDI-based 60 SN/BA 7.3 575 600 Lower thermal yellowing

Desmodur® BL 3370 MPA HDI-based 70 MPA 8.9 470 3,800 High reactive

Desmodur® BL 3475 BA/SN HDI/IPDI-based 75 BA/SN 8.2 510 1,000 High reactive

Desmodur® BL 3272 MPA HDI-basede 72 MPA 10.2 410 2,700 Very high film thickness

Desmodur® BL 2078/2 IPDI-based 60 SN 7.0 600 1,750Polyurethane crosslinker with FDA-Food Contact Notification, which may be used in combination with FDA conform polyol, very high film thickness



Desmotherm®

Specialty polyurethanes.


TYPE VISC. AT 23 °C APPROX. [mPa • s]

AUTO OEM


Self-crosslinking baking urethane resins

Desmotherm® 2170 MDI self-crosslinking baking urethane resin 70 BA/SN/IB 2,000 For 1K-PUR baking coatings (primers and primer-

surfacers)



Bayhydur® BLBaybond®Imprafix®Bayhytherm®

TYPE

NON VOLATILE CONTENT APPROX. [%]

NEUTRALIZATION AGENT

BLOCKED NCO CONTENT[%] ON SOLIDS

INDUSTRIAL METAL

Bayhydur® BL 5335 W-based 35 — MPA 4.5/X 4.5 7.1 For glass and can coatings with good alkali resistance

Bayhydur® BL XP 2706 HDI/IPDI-based 40 DMEA 0 8.2 High reactivity, DMP blocked, excellent thermostability (yellowing) and better chemical resistance

Imprafix® 2794 XP HDI-based 38 — 0 12.7 High reactivity (DMP blocked) very good thermostability (yellowing), good caustic resistance

Baybond® XL 6366 HDI-based 45 — 0 12.5 Medium reactivity (MEKO blocked)

Baybond® XL 825 HDI-based 30 — 0 10.0 Low reactivity (CPL blocked), thermostability (yellowing)

Baybond® XL 7270 HDI-based 30 — 0 13.1 Low reactivity (CPL blocked), thermostability (yellowing)

Baybond® XL 3674 XP HDI-based 30 — 0 10.7 Food contact acc. to EC 2011/10

ORGANIC CONSOLVENT CONTENT [%] IN

AUTO OEM

GLASS COATINGS


Self-crosslinking urethane resins for 1K waterborne stoving systems

Bayhytherm® 3146 Aliphatic, self-crosslinking baking urethane resin 46 DMEA NMP 1, SN/MPA 3 For OEM primer surfacers with high solids content;

also for general industrial coatings

Bayhytherm® 3246 XPAliphatic, self-crosslinking baking

urethane resin 46 DMEA MPA 2.6, SN 2.4 Further development of Bayhytherm® 3146 without NMP

Thermally activated polyurethane hardenerfor 1K waterbornestoving systems



Crelan®

Hardeners for high-performance, lightfast powder coatings with polyurethane quality.

Powderhardeners

TYPE

SUPPLY FORM

Tg [°C] EQUIVALENTWEIGHT APPROX.

STANDARDBAKE CYCLE

Crelan® EF 403Internally blocked linear IPDI

polyisocyanate Flakes 40 – 55 13.5 internally 310 LF 15 min/180 °CFor emission-free powder coatings with outstanding levelling and pigment wetting and for special one-shot matte coatings

Crelan® UIBlocked linear IPDI

polyisocyanate Flakes > 60 11.5 365 LF 15 min/180 °CFor powder coating with good levelling and good pigment wetting or to improve coating properties of hybrid systems

Crelan® NI-2Blocked branched IPDI

polyisocyanate Prills 55 – 60 15.0 280 LF 15 min/180 °CFor economical standard powder coatings with good levelling, good pigment wetting and good corrosion resistance

Crelan® VP LS 2256Blocked branched IPDI

polyisocyanate Flakes 46 – 58 15.0 280 LF 15 min/180 °CFor high chemical resistance powder coatings with easy-to-clean properties and standard powder coatings with good overall properties

Crelan® NW-5Blocked branched W

polyisocyanate Prills 48 – 58 12.7 335 LF 15 min/175 °CFor higher reactive powder coatings with excellent flexibility and corrosion resistance properties

BLOCKED NCO CONTENT ONSUPPLY FORM APPROX. [%]

FUNCTIONALITY* APPROX.


* LF = Low functionality


At Covestro innovation is in our DNA. Ever since Otto Bayer dis-covered polyurethanes in 1937, we have been driving polyurethane innovations in coatings and adhe-sives as well as in other application areas. As our partner you enjoy fast-lane access to polyurethane innovations, and can help us in de-veloping the next generation of polyurethanes to meet the indus-try’s upcoming challenges and needs. What can we offer you?

• Powerful know-how on both established and new polyisocy-anates, as well as on new poly-urethane hybrid technologies.

• The prospect of new application technologies to enable efficient processes.

• More sustainable, biomass- or CO2-based materials that do not sacrifice high performance.

Join us to shape the future!

Fast-lane access to polyurethane innovations

Polyisocyanates and Prepolymers - WhitChemwhitchem.co.uk/uploads/Principal Brochures/Covestro/Covestro... · Polyisocyanates and Prepolymers ... Silane-terminated 20 – 21 Desmodur®/Desmoseal

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