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5

Toynol® DS-191L/191H Dispersants

Characteristics

ØHigh performance dispersing agents used in water-based system;

ØGood wetting effect to pigment and fillings

ØOutstanding controlling flocculation effect

ØProvide powerful charge repulsion property;

ØSuitable for various powder;

ØReduce viscosity of grinding system, improve color development of millbase;

ØSpecially suitable for organic pigment dispersion;

ØAPEO free

Physical properties

Typical Properties


DS-191L

DS-191H

Appearance

Yellow transparent liquid

Yellow transparent liquid

Content(%)

40%

40%

Solvent

water

water


Chemical Components

Mixture of Amine alkyl hydroxy affixture of HMW styrene acrylic copolymers and surfactant

Recommended Applications

Phthalocyanine organic pigment(blue/green)

Azo organic pigment(red/yellow)



Grinding operation

Dispersing sand mill;Glass bead(0.8-1.2mm);

Filling rate 70%

3000rmp/min  60min

Performance evaluation

ØCentrifugal stability: take 20ml millbase into centrifuge tube, centrifuge 10 min under condition of 3000r/min, then take out to observe the layering of millbase. Pour out liquid and calculate amount and percentage of precipitate.

ØViscosity evaluation:Use Brookfield rotational viscometer

ØFineness measure:Scraper fineness meter;

ØViscosity stability:Store millbase in 100ml wild-mouth bottle at 40℃ for 24 hours, measure viscosity change,  ±50% change is regarded qualified;

ExampleⅠ(●:Excellent;◎:Good )

Experimental pigment: phthalocyanine blue 15:2 , powder content 30%

Pigment content:                  30

Dispersant dosage(as supplied):    30

Defoamer(Toynol®):               0.1-0.3

Wetting agent(Toynol®):           0-0.3(as appropriate)

Water:                          add to 100%

Item

Toynol® DS-191L/H

Toynol® DS-193L/H

Comparison with imported dispersant

Dispersant dosage(SOP)

40%

40%

40%

Wetting of original powder

Quick

Quick

Quick

Original liquid stability (centrifugation)

Dilution stability(centrifugation)

Millbase viscosity

Dispersion fineness(μm)

≤2.5

≤2.5

≤2.5

Change of storage viscosity

Without thickening and thixotropy

Without thickening and thixotropy

Without thickening and thixotropy

ExampleⅡ(●:Excellent;◎:Good )

Experimental pigment: permanent yellow P.Y.12, powder content 35%

Organic pigment content:          35

Dispersant dosage(as supplied):    26

Defoamer(Toynol®):               0.1-0.3

Wetting agent(Toynol®):            0-0.3(as appropriate)

Water:                           add to 100%

Item

Toynol® DS-191L/H

Toynol® DS-193L/H

Comparison with imported dispersant

Dispersant dosage(SOP)

30%

30%

30%

Original powder wetting

Quick

Quick

Quick

Original liquid stability (centrifugation)

Dilution stability(centrifugation)

Millbase viscosity

Dispersion fineness(μm)

≤2.5

≤2.5

≤2.5

Change of storage viscosity

Without thickening and thixotropy

Without thickening and thixotropy

Without thickening and thixotropy


(When actual operation:First add dispersant into water, then add powder, 4000rmp/min 10min. After powder completely wetting, put into grinding glass beads to start timing grind.)


Recommended Applications

ØWater-based inks

ØArchitectural coating

ØWood and furniture coatings

ØAutomotive coatings

ØCan coatings

ØAnticorrosive paint

ØLeather coatings

Operation proposal

1 Suggested dosage of organic pigment(Based on pigment, Toynol® dispersants calculate solid content SOP)10-50%

2 Do not add wetting agents separately;

3 Toynol® wetting agents can accelerate original powder wetting

4 Adding Toynol® defoamers can quickly eliminate grinding foam

5 To obtain optimal performance, Toynol® additives must be added in water before resin and pigment

6 Advise gradient test;


Picture1: Carrying capacity of phthalocyanine pigment

 Picture 2:Carrying capacity of permanent yellow pigment



Packaging/storage

25L/plastic drum;220L/iron drum

As liquid material, this product should be sealed and placed in a dry, cool, well-ventilated place at room temperature away from fire source. For any other information, please refer to MSDS.



All statements, technical information and recommendations contained herein are based on tests and data which we believe to be reliable, but the accuracy or completeness thereof is not guaranteed and no warranty of any kind is made with respect thereto. This manual can not serve as any legal material.



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