Water-based multi-color paint

There is high degree of difficulty in producing multi-color paints. Proper selection of raw materials specifically for multi-color applications, together with the right formulations and production technology, can help to avoid all the drawbacks in paint production, storage, and usage. Polywill has developed a series of emulsion and additive products specifically for multi-color applications, giving multi-color paints higher quality and better performance.

Analyses and Solutions on Common Problems in Multi-Color Paints

Problem

Possible Causes

Solutions

Polywill Products

Diffusion of Multi-color particles

1. Improper wetting/dispersing agent used in multi-color base paint

2. Low gel cross-linking density on surface of color particles

3. Improper emulsion for the dispersed phase

4. Compatibility of pigment slurry in the formulation

1、 Use hydrophobic wetting/dispersing agents

2、 Use special additive to improve the toughness of the color particles

3、 Selection of emulsion that will not induce color diffusion

1、 Hydrophobic wetting/dispersing agent: D-26

2、 Additive for improving particle toughness: W-520

3、 Specialty additive W-526

4、 W/W, S/W emulsion for dispersed phase: 3726N

Multi-color particles flow-up or precipitate

1、 Large difference in density between dispersed and continuous phases

2、 Improper use of thickeners

1、 Reducing density difference as much as formulation allows

2、 Proper selection of rheology modifiers

1Rheology modifiee H-350

2Rheology modifier H-120

3Rheology modifier A-018

Softening or hardening of multi-color particles

1、 Hardening is mainly caused by improper selection of protective coating or its dosage is incorrect

2、 Softening is mainly due to the lesser cross-inking density of the gel on particle surface

1、 Use common protective coating on the market with the correct dosage

2、 Use specialty additive to improve the toughness of the color particles

1、 Specialty  toughening additive  for multi-color : W-520

2、 Specialty additive : W-526

Poor water resistance

1、 Poor water resistance in the used rheology modifier and continuous-phase emulsion

2、 The use of protective coating with continuous-phase emulsion leads to poor water resistance.

1、 Use rheology modifier and continuous-phase emulsion specifically for mult-color applications

2、 Matching protective coating with continuous-phase emulsion

1、 Specialty rheology modifier H-350and H-120

2 Specialty emulsion  for continuous phase: 3708

Poor storage stabilityViscosity increases after long storage, leading to unworkable product

3 Improper protective coating

4 Poor viscosity stability after protective coating is in contact with continuous-phase emulsion

5 Improper selection of rheology modifiers

3. Better matching of protective coating and continuous-phase emulsion

4. Select proper rheology modifiers

5. Select ionic wetting agent specifically for multi-color applications, stabilizing the paint viscosity.

3.Specialty emulsion 3708

4.Specialty rheology modifier H-120 and H-350

5.Specialty ionic wetting agent: W-519




Additives for Multi-color Paint

TYPE

PRODUCT

NAME

TYPICAL PROPERTIES

DOSAGE

%

CHARACTERISTIC

Appearance

Content%

APEO/

Formaldehyde

Wetting/

Dispersing Agents

Coadd™ D-26

Light-yellow liquid

30±1

NONE

0.8~1.5

1.Ammonium salt of hydrophobically modified acrylic copolymer dispersant
2.Very good dispersing effect
3.Excellent water resistance, providing  properties in early water resistance and early scrub resistance
4.Imrpoving rain-streaking resistance of the coating
5.Suitbale for high-performance water-borne systems

Coadd™ W-110

Colorless transparent or semi-transparent liquid

100

NONE

0.1~1.0

1.Modified silicone polymer
2.Strong fast-wetting  effect. Able to provide surface wetting and complete wetting to the substrates.
3.Good compatibility. No cratering and no adverse effect on film clarity. Strong penetrating effect
4.Suitabke for hard-to-wet substrates

Coadd™ W-519

Transparent liquid

17.5±1

NONE

0.4-0.6

1.Wetting agent specifically for water-borne multi-color paints
2.Its addition in multi-color paints can effectively improve post thickening of the paint systems and improve the viscosity stability under different temperatures.
3.Lowering surface tension, and improving morphology stability of the multi-color particles

Coadd™ W-520

Semi-transparent, viscous liquid

37.5±1

NONE

0.3-0.6

1.Specialty additive for multi-color paints
2.Addition to the base paint (dispersed phase) for multi-color will help to improve its cohesion and the toughness of the color particles, assuring the morphology stability of the particles.
3.Used in multi-color (dispersed phase) base paint to also reduce the color diffusion in the manufacturing process, assuring color stability
4.Excellent system compatibility

Coadd™ W-526

Semi-Transparent, viscous liquid

49±1

NONE

0.3-0.6

1.Specialty additive for multi-color paints
2. Addition to the base paint (dispersed phase) for multi-color will help to improve its cohesion and toughness of the color particles, assuring the morphology stability of the particles.
3.Used in multi-color (dispersed phase) base paint to also reduce the color diffusion in the manufacturing process, assuring color stability
4.Excellent system compatibility

Defoamers

Coadd™ DF-420

Opaque liquid

100

NONE

0.1~1.0

1.Mineral oil based, general purpose defoamer with good economic values
2.Excellent compatibility with aqueous systems. No oil flick. Excellent defoaming performance
3.Can be used for PSA and various latex systems.

Coadd™ DF-825

Opaque milky liquid

30±1

NONE

0.1~1.0

1.High-efficiency, silicone based liquid defoamer
2.Excellent defoaming and anti-foam efficiency
3.Very good compatibility with different water-borne systems
4.Excellent defoaming effect at jobsite. Easy handling. Good dispersibility
5.Very suitable for use in mixing steps

Coadd™ DF-860

Translucent, pale liquid

100

NONE

0.05~0.5

1.Super efficient, silicone based defoamer
2.Suitable for defoaming and micro-foam elimination in the mastic paints
3.Very good defoaming for textured and rolled paints at jobsite

Rheology Modifiers

Coadd™ A-018

Milky white liquid

29±1

NONE

0.1~1.5

1.Alkali-soluble acrylic rheology modifier
2.Suitable for low shear-viscosity paints
3.Higher thickening efficiency than other thickeners of the same kind
4.Improve the property of pigments and extenders against settling
5.Suitable for art paints and other varnish paints with special functionalities

Coadd™ H-120

Milky white liquid

30±1

NONE

0.1~1.0

1. High thixotropic rheology modifier for low shear-viscosity systems
2.High thickening efficiency
3.Suitable for mastic or textured paints. Lowering the dosage of HASE type thickeners
4.Very suitable for water-borne multi-color and S/W paints

Coadd™ H-350

Milky white liquid

29±1

NONE

0.1~1.0

1.Hydrophobically modified alkali-soluble associative rheology modifier
2.Suitable for medium shear-viscosity (KU) paint systems
3.In comparison to similar products on the market, H-350 offers better leveling property and better storage stability for the paints

Coadd™ U-501

Transparent to translucent viscous liquid

38±1

NONE

0.1~1.0

1.Nonionic HEUR associative rheology modifier
2.Very good thickening performance for medium shear-viscosity (KU) paints. Also has good performance in low shear-viscosity systems
4.Improves the leveling property of the paints
5.Excellent water and chemical resistance



Emulsions for Multi-color Paints

Special Emulsions and Varnish Top-Coat for Multi-Color Paints

TYPE

PRODUCT

NAME

TYPICAL PROPERTIES

CHARACTERISTIC

Apearance

Solid

%

pH 

MFFT,℃

APEO/

Formaldehyde

Specialty Emulsions for Multi-Colors

3708

Milky white translucent liquid

34±1

8.3±1

-

NONE

1.High-performance silicone-acrylic emulsion specifically for multi-color paints
2.Good film clarity
3.Provides long-lasting stability with protective coatings
4.Suitable for use as continuous-phase emulsion for w/w and s/w systems. Can also be used as varnish topcoat

3726N

Milky white liquid

50±1

8±1

20

NONE

1.100% acrylic emulsion
2.Excellent weatherability
3.Excellent Ca2+ stability and mechanical stability
4.For formulations of flat to high-gloss acrylic colors with high environmental profile
5.Suitable for exterior or textured paints or base paint for multi-colors

Varnish topcoat

5009

Milky white liquid

46±1

8±1

33

NONE

1.Very high gloss
2.Excellent weatherability, water and water-whitening resistance
3.Good mechanical stability and general applicability
4.Suitable for exterior high-gloss mastic topcoat. Also used for stone paints and textured paints

5010

Milky white liquid

42±1

8.5±1

23

NONE

1.High gloss
2.Excellent film density. No water whitening in accelerated water-immersion test
3.Hydrophobic design of the polymer greatly reduce the risk of film chalking under weather
4.Suitable as varnish topcoat for stone paints, textured paints, multi-colored paint, and art paints

5010M

Milky white liquid

40±1

9±1

24

NONE

1.Multi-phase self-coagulating emulsion  matte and dirt pick-up resistance properties
2.Assure good film clarity, no matte powder
3.Superior water resistance and water-whitening resistance
4.Suitable as matte topcoat for stone paints, textured paints, and multi-color paints





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