Composition useful for preparing multicolor paint

Patent metadata

Field	Value
Publication number	US-12258489-B2
Application number	US-201616472064-A
Country	US
Kind code	B2
Filing date	Dec 20, 2016
Priority date	Dec 20, 2016
Publication date	Mar 25, 2025
Grant date	Mar 25, 2025

Abstract

A composition comprising a first, synthetic gel and a second gel is useful for the preparation of waterborne multicolor paints.

First claim

The invention claimed is:

1. A composition comprising: a) a colorant, b) a first gel, c) a second gel, and d) a binder, wherein zero or more of the following optional components may be included: an extender, a dispersant, a biocide, a defoamer and/or a rheology modifier, wherein the first gel is cellulose-free and includes a prepolymer dispersion and a latex dispersion that are equal 100 wt. % of a total weight of the first gel, wherein:
the prepolymer dispersion that is the reaction product of a hydrophilic polyurethane prepolymer and water, and the prepolymer dispersion comprises water, from 0.5 to 15 weight (wt. %) prepolymer in reacted form, and from 0.05 to 10 wt. % of the colorant, and wherein the water, the prepolymer in reacted form, and the colorant are equal to 100 wt. % of the prepolymer dispersion; and
the latex dispersion including the binder, clay, and water, wherein the binder is a latex binder selected from a group consisting of an acrylic-based latex, a styrene acrylic latex, and a styrene/butadiene latex.

2. The composition of claim 1 wherein the prepolymer content of the first gel is from 0.5 to 10 wt. % prepolymer in reacted form.

3. The composition of claim 1 wherein the weight ratio of first gel to the second gel is from 5:95 to 95:5.

4. The composition of claim 1 wherein the second gel comprises at least one of a guar gum, a cellulose or cellulose derivative, and/or a flocculated polyacrylate polymer.

5. The composition of claim 1 wherein the prepolymer employed to prepare the first gel has a free NCO content of from 1 to 5 wt. %.

6. The composition of claim 1 comprising from 0.05 to 5 wt. % of the first gel, from 0.02 to 3 wt. % of the second gel, and a continuous phase, wherein the weight of the composition totals to 100 wt. %, wherein the gels are dispersed in the continuous phase, and wherein at least one gel comprises from 0.001 to 2 wt. % colorant.

7. The composition of claim 1 further comprising a continuous phase, wherein the continuous phase comprises from 1 to 70 wt. % of a binder, from 0 to 3 wt. % defoamer, from 0 to 3 wt. % rheology modifier, from 0 to 40 wt. % pigment, from 0 to 50 wt. % extender, from 0 to 3 wt. % dispersant, from zero to 10 wt. % clay, and from 0 to 3 wt. % biocide, and wherein the total weight of the continuous phase is 100 wt. %.

8. A multicolor paint prepared using the composition of claim 1 and a continuous phase.

9. The composition of claim 1 wherein the prepolymer content of the first gel is from 0.5 to 5 wt. % prepolymer in reacted form.

10. The composition of claim 1 wherein the prepolymer content of the first gel is from 1 to 5 wt. % prepolymer in reacted form.

11. The composition of claim 1 wherein the prepolymer content of the first gel is from 0.5 to less than 3 wt. % prepolymer in reacted form.

12. The composition of claim 1 wherein the prepolymer content of the first gel is from 3 to 10 wt. % prepolymer in reacted form.

13. The composition of claim 1 , wherein the binder, the clay, and the water are equal to 100 wt. % of a total weight of the latex dispersion.

Assignees

• Dow Global Technologies Llc

Inventors

• Zhang Shiling
• Hu Minbiao
• Yun Dong
• Li Wei
• Chen Huan

Classifications

• C09D175/04

  Polyurethanes · CPC title

• C09D133/08

  Homopolymers or copolymers of acrylic acid esters · CPC title

• C09D105/00

  Coating compositions based on polysaccharides or on their derivatives, not provided for in groups C09D101/00 or C09D103/00 · CPC title

• C09D101/02

  Cellulose; Modified cellulose · CPC title

• C09D5/028

  Pigments; Filters · CPC title