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Screening Experiment of Dispersants for Urea Pigment Paste

2026-04-17
Latest company cases about Screening Experiment of Dispersants for Urea Pigment Paste

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Experiment Record Sheet

Experiment Name 

Urea Color Chip / Urea Pigment Paste

Temperature / Humidity 

20°C / 77%
Customer   Applicant: Mr. Zhang Experiment Date April 2, 2026    

Objective:

The customer requires a waterborne resin-free pigment paste (no co-solvent). Pigments submitted: green and organic yellow. Pigment content: 25–30%. Hot storage at 55°C for 7 days with no significant change. No specific fineness requirement. High viscosity acceptable (paste form is also acceptable).

Heat urea to 120–123°C until melted, add 0.03% pigment paste, mix well, pour onto a clean floor, and allow to naturally solidify. After drying, observe whether the urea color chip is uniform, with no color spots required.

 
Phthalocyanine Blue,Organic Deep Yellow        
Water 50            
Urea 10            
Pigment 30            
Dispersant 6272 6270A 6871 6070      
               

Test Method:

Heat 100 g of urea to 120–123°C until melted. Add 0.03% pigment paste, stir evenly, pour onto a clean floor. After cooling and solidification, observe whether the color is uniform and free of color spots.

 

 
Test Results:
aktueller Firmenfall über Screening Experiment of Dispersants for Urea Pigment Paste  1 aktueller Firmenfall über Screening Experiment of Dispersants for Urea Pigment Paste  2 aktueller Firmenfall über Screening Experiment of Dispersants for Urea Pigment Paste  3aktueller Firmenfall über Screening Experiment of Dispersants for Urea Pigment Paste  4aktueller Firmenfall über Screening Experiment of Dispersants for Urea Pigment Paste  5

Experiment Conclusion:

The pigment paste ground with dispersant 6070, when added to urea, shows uniform color and no color spots, and can meet the customer's requirements.

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