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1. (WO2019046123) LATEX COMPOSITIONS COMPRISING POLYSACCHARIDES
注意: このテキストは、OCR 処理によってテキスト化されたものです。法的な用途には PDF 版をご利用ください。

CLAIMS

What is claimed is:

1 . An aqueous latex composition comprising:

polysaccharide particles, and a polymer dispersion or polymer emulsion;

wherein the polysaccharide particles comprise at least one polysaccharide comprising:

i) poly alpha-1 ,3-glucan;

ii) poly alpha-1 ,3-1 ,6-glucan;

iii) a poly alpha-1 ,3-glucan ester compound represented by Structure 1 :


Structure 1

wherein

(A) n is at least 6;

(B) each R is independently an -H or a first group comprising -CO-Cx-COOH, wherein the -Cx- portion of said first group comprises a chain of 2 to 6 carbon atoms; and

(C) the compound has a degree of substitution with the first group of about 0.001 to about 3;

iv) a poly alpha-1 ,3-glucan ester compound represented by

Structure 2:

Structure 2

wherein

(i) n is at least 6,

(ii) each R is independently an H or an acyl group, and

(iii) the compound has a degree of substitution of about 0.001 to about

3.0;

v) a poly alpha-1 ,3-glucan ether compound represented by Structure 3:


Structure 3

wherein

(A) n is at least 6,

(B) each R is independently an H or an organic group, and

(C) the compound has a degree of substitution of about 0.001 to about 3.0;

vi) a poly alpha-1 ,3-glucan ether compound represented by Structure 4:

Structure 4

wherein

(A) n is at least 6,

(B) each R is independently an H or a positively charged organic group, and

(C) the compound has a degree of substitution of about 0.001 to about 3.0;

or a combination thereof.

2. The latex composition of claim 1 , wherein the polysaccharide particles have an average particle size in at least one dimension in the range of from about 20 nm to about 5000 microns.

3. The latex composition of claim 1 , wherein the polysaccharide particles are present at an amount in the range of from about 0.01 weight percent polysaccharide solids to about 75 weight percent polysaccharide solids, based on the total weight of polysaccharide and polymer solids.

4. The latex composition of claim 1 , wherein the polysaccharide particles comprise poly alpha-1 ,3-glucan.

5. The latex composition of claim 1 , wherein the polymer dispersion or polymer emulsion comprises a polymer polymerized from at least one copolymerizable monoethylenically unsaturated monomer; polyurethane; epoxy; a rubber elastomer; or a combination thereof.

6. The latex composition of claim 5, wherein the polymer dispersion or polymer emulsion comprises a polymer polymerized from at least one copolymerizable monoethylenically unsaturated monomer, and the monomer comprises vinyl monomers, acrylic monomers, allylic monomers, acrylamide monomers, monocarboxylic unsaturated acids, dicarboxylic unsaturated acids, or a mixture thereof.

7. The latex composition of claim 5, wherein the polymer dispersion or polymer emulsion comprises polyurethane or epoxy.

8. The latex composition of claim 5, wherein the polymer dispersion or polymer emulsion comprises a rubber elastomer, and the rubber elastomer comprises natural rubber, synthetic polyisoprene, styrene butadiene copolymer rubber, ethylene propylene diene monomer rubber, hydrogenated nitrile butadiene rubber, polybutadiene, or neoprene.

9. The latex composition of claim 1 , wherein the polymer dispersion or polymer emulsion comprises particles having an average particle size in at least one dimension in the range of from about 10 nm to about 2500 nm.

10. The latex composition of claim 5, wherein the polymer of the polymer dispersion or polymer emulsion is present at an amount in the range of from about 0.5 weight percent polymer solids to about 90 weight percent polymer solids, based on the total weight of polysaccharide and polymer solids.

1 1 . The latex composition of claim 1 , further comprising one or more additives, wherein the additive is a dispersant, rheological aid, antifoam, foaming agent, adhesion promoter, flame retardant, bactericide, fungicide, preservative, optical brightener, pigment, filler, anti-settling agent, coalescing agent, humectant, buffer, colorant, viscosity modifier, antifreeze, surfactant, binder, crosslinking agent, anticorrosion agent, hardener, pH regulator, salt, thickener, plasticizer, stabilizer, extender, matting agent, or a combination thereof.

12. A paint formulation comprising the latex composition of claim 1 .

13. An adhesive, film, coating, or binder comprising the latex composition of claim 1 in a dry form.

14. An article comprising the adhesive, film, coating, or binder of claim 13.

15. The article of claim 14, wherein the article is paper, leather, wood, metal, polymer, a fibrous substrate, or an architectural surface.