ALBERDINGK BOLEY GmbH.alberdingk-boley.com Düsseldorfer Str. 53 47829 Krefeld, Germany Phone +49 2151 528-0 Fax +49 2151 573643.

ALBERDINGK BOLEY GmbH

www.alberdingk-boley.com.alberdingk-boley.com

Düsseldorfer Str. 5347829 Krefeld, Germany Phone +49 2151 528-0 Fax +49 2151 573643

ALBERDINGK RESINS (SHENZHEN)Co., Ltd.(West) 1st/2nd Floor, Building D, Huanyu Industrial Park, Xuefu Road, Xingwei ， Huangtian, Xixiang, Bao’an District, Shenzhen

Alberdingk Boley

Waterborne plastic coatingsWaterborne plastic coatings

by Magdalena Bodi

178 years History178 years History

1828 Production of oils (linseed and castor)

1970 Start with WB binders: Acrylic dispersions

1985 Polyurethane dispersions1998 Production of adhesives2000 Alberdingk Boley Inc., NC, USA2004 Production in Greensborough,

USA2006 Alberdingk Boley in China

Alberdingk Boley

Contents

• Company introduction

• Binder types, characteristics, film formation

• Application field plastic coatings

Required properties

Product recommendation

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Nature of AB dispersionsWhat are really this binders??

• Waterabased dispersion?

• Waterbased emulsions?

• Latexes?• Solutions in water?

• Small solid polimer particles dispersed in water = DISPERSIONS

m.w.>100000• Dilutable with water

in liquid fase• Non soluble in water

as a dried film

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Optical appearance of the dispersion

Particle size:

> 1µm:

milky white

1µm – 0,1µm

brownish white appearance

0,1µm - 0,05 µm

semi-transparent

< 0,05 µm

almost transparent

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Acrylic PUD PUD

Film forming mechanism

Stage I Evaporation of water

Stage II Particle deformation, T > MFFT

Stage III Coalescence

Stage IV Interdiffusion of polymer chains

Aqueous polymer dispersion(Solid Content: 30-60%)

Arrangement of particles, close contact

Deformation of the polymer particles

Surfaces of polymer particles are disappearing: polymer chains intermix

Polymer interdiffusion, leading to a mechanical stable polymer film

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MFFT reduction with different coalescing agents for AS 2615

0

10

20

30

40

50

60

70

0 5 10 15

BG BDG

DPnB DPM

FSB EDG

Cosolvent %

MF

FT

°C

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Curing mechanisms of w/b coatings

1. 1-Component (drying only)optional: self cross-linking binders

2. 2-Component cross-linking

3. UV cross-linking

4. Dual curing (UV and isocyanate)

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Alberdingk binder for plastic coatings

• 1KStyrene Acrylics:AS 2615; AS 2606,AS 26090Pure Acrylic:AC 2508AC-PU hybridsAPU 10610APU 10351Polyurethane:U 610, U 5200, U 3251

• 2 KOH-fuctional acrylics:AC 2598; AC 2597AC-PU hybrids:APU 10610; APU 10120;APU 10351Polyurethane:U 610, U 5200, U 3251 for

flexible substratesU 9160; U 9800 for hard

substrates

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Application fields

• Hifi , TV-Sets , Mobile phones,

Computers, etc.• Car interior : different plastic

parts, softfeel and non-

softfeel• Car exterior:

Basecoats

Wheel cover

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Requirements

Very good adhesionAlu-pigment orientationAlcohol- und fat resistanceScratch resistance

Substrates : ABS , PS ABS-PC, PC

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Mobile phones Recommended products:

Styrene-Acrylic dispersions:AS 2615, AS 2606 good chemical resistance, hardness Polyurethane dispersions:U 9160 or U 9800 as 2K systems for excellent chemical resistance and hardness

Computer-, TV, HIFI casesProduct recommendation

Styrene-Acrylics:

AS 2615; AS 2606, basecoat, monolayer

OH-functional acrylics:

AC 2598; AS 2799 as 2K-PU

PU binder:

U 9160, U9800 as 2K-PU

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Finish possibilities

1K paints and lacquersAS 2606, AS 2615 as basecoat or multilayerGood chemical resistance, hardness 2K paints and lacquersU 9800, U9160, PU binder as base- and

topcoats, excellent chemical resistance, hardness

AC 2598, AS 2799, AC binders as base-and topcoats, very good chemical resistance,

excellent hardness

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Aluminium pigmented formulation based on AS 2615, AS 2606

Paint components:

• Binder• Cosolvents• Water• Defoamer• Alu pigment • Substrate wetting additive• Rheological additives

Recommended parameters:

Solid content: Basecoats: 15-25% Monolayer: 25-35% Chromeffect: 5-10% Cosolvents: AS types: ca. 20%

cosolvent on total formulation

Alu-Pigment: Alu pigment

concentrate!

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Type of Aluminium Pigments (Shape)

Cornflake

Silverdollar

Stronger light scattering, more edgesLess metalic effect, more gray colour,Corneflakes, smaller particle size, wide particle size distribution

Stronger light reflexion, more brilliant colour

Silverdollar, rounder shapes

Narrow particle size distribution

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Possible surface treatments :

Phosphororganic, pigment preparation only with water, excellent binder compatibility

Water + Solvent: Pigment preparation+ BG and PM fair good gasing stabiliy

Chromate , excellent continuous gasing stability, condens water stability, intercoat adhesion

Anorganic SiO2-Treatment, Sol-Gel Process, higher whiteness, v.good orientation, shearing stress and excellent gasing stability,intercoat adhesion, circular pipe line stability

Type of Alu Pigments (Surface treatment)Alberdingk Boley

•Good pigment orientation

•High gloss, brilliance

•High hiding power

•Bad pigment orientation

"Salt-and-Pepper” Effekt

Pigment orientation

Recommended rheological additives for good pigment orientation:

Acrylic thickener: Viscalex HV 30(Ciba), Latekol D (Basf)

Antisettling additives: Byk-420 (Byk), Disperlon Q-607, etc.

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Alu Pigment preparation

Premix Aluminium Pigment concentrate with:Water/BG(1:1) + Additive Possible Additives:Dis-190 for organic traeted-Dis-180 or TegoWet 655 for inorganic treated

pigments

Dosage: 5-8% on Alu-Solid content

Important to avoid high shearforcess!

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Car interior coatings

Substrates mainly: PA 6 , ABS-PC, PP Requirements : Very good adhesion Scratch resistance Alcohol and Fat

resistance Feel between velvet and

rubber for softfeel coatings

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Car interior coatings

Product recommendation

Softfeel:

Polyurethane dispersions :U 610 , U 2101 ,

CUR 21

Acrylic dispersions: AC 2592, AC 2597

and their combinations!

Hard plastic:

Acrylic dispersion: AS 26090!!

Bodi

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NEW!

Car interior coating; Softfeel paints

For good chemical and mechanical resistance softeel paints should be 2K systems!

• Recommended Hardeners:• Hydrophylic Isocyanates :• Bayhydur 2306; Bayhydur 3100• Bayhydur 2336• Basonat HW 100; Basonat HW 180PC• Rhodocoat WT 2102, Rhodocoat 803

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Car outside / Basecoats

Requirements:

Excellent adhesion Recoatability Clarity , brilliance Good Alu pigment orientation

Car outside/ Basecoats Product recommendation:

Polyurethane dispersions : U 3251 , U 610 ( 1 and 2 K

systems)Polyurethane-Acrylic dispersion : APU 10120 (1 and 2 K systems)For 2K systems crosslinking with

hydrophilic isocyanates

Bodi

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2-Komponent wb lacquer

1-K: OH functional acrylicsCrosslinkable groups containing PU binders

2-K:Hydrophilic, aliphatic isocyanatesCommercial Types from BASF, Bayer, RhodiaSilanesCarbodiimides

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2-Component w/b lacquer

Benefit of crosslinking:similar to s/b systems:improved chemical propertiesbetter adhesionincreased abrasion resistance

Disadvantage : short pot life limited storage needs more attention

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PVC- Window frames

Requirements:

Excellent adhesion Water resistanceVery good blocking resistanceGood pigment wetting

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PVC- Window frames

Product recommendation : PU- AC dispersion : APU 10610

Combination with AC 2508 for blocking resistance improvement possible

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Adhesion on difficult substrates

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Adhesion on difficult substrates

Possibilities to work with adhesion promoters:

1. Use adhesion promoters as a separat primer

2. Add adhesion promoters directly to the primer as a paint component – more convenient-

e.g. in formulations based on AS 26090 we can add: 10-20% CPO 347W(Eastmann)

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Targets for the futureTargets for the future

Low solvent containing and solvent free binders

Generally lowering of VOC Chemical resistance improvement Increasing of adhesion and scratch

resistance Easy to formulate binders

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Thank you for your attention

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