Compositions containing one or more poly alpha-1,3-glucan ether compounds

Patent metadata

Field	Value
Publication number	US-9771548-B2
Application number	US-201514741769-A
Country	US
Kind code	B2
Filing date	Jun 17, 2015
Priority date	Jun 19, 2014
Publication date	Sep 26, 2017
Grant date	Sep 26, 2017

Abstract

Compositions comprising cellulase and at least one poly alpha-1,3-glucan ether compound having a degree of substitution with an organic group of about 0.05-3.0 are disclosed. Such compositions can be dry or aqueous, the latter of which can have a viscosity of at least about 10 cPs. The disclosed composition can be in the form of a personal care product, household product, or industrial product, for example. Also disclosed are a method for preparing an aqueous composition comprising cellulase and a poly alpha-1,3-glucan ether compound, and a method of treating a material such as fabric by contacting it with this aqueous composition.

First claim

What is claimed is:

1. A composition comprising a cellulase and a poly alpha-1,3-glucan compound represented by the structure:

wherein
(i) n is at least 6,
(ii) each R is independently an H or an organic group, and
(iii) the compound has a degree of substitution of about 0.05 to about 3.0 when substituted with the organic group.

2. The composition of claim 1 , wherein the compound is substituted by the organic group, and the organic group is selected from the group consisting of carboxy alkyl, hydroxy alkyl, and alkyl.

3. The composition of claim 2 , wherein the organic group is selected from the group consisting of carboxymethyl, hydroxypropyl, dihydroxypropyl, hydroxyethyl, methyl, and ethyl.

4. The composition of claim 2 , wherein the organic group is a carboxymethyl group.

5. The composition of claim 1 , wherein the composition is in the form of a personal care product, household product, or industrial product.

6. The composition of claim 5 , wherein the composition is a fabric care product.

7. The composition of claim 1 , wherein the composition is an aqueous composition.

8. The composition of claim 7 , wherein the composition has a viscosity of at least about 10 cPs.

9. The composition of claim 1 , wherein the poly alpha-1,3-glucan compound has one or more of the same organic group.

10. The composition of claim 1 , wherein the poly alpha-1,3-glucan compound has two or more different organic groups.

11. The composition of claim 1 , wherein the composition comprises a surfactant.

12. The composition of claim 11 , wherein the poly alpha-1,3-glucan compound is substituted by the organic group.

13. The composition of claim 1 , wherein the composition comprises less than 1 part-per-million of the cellulase.

14. A method for preparing an aqueous composition, the method comprising:
contacting an aqueous composition with a poly alpha-1,3-glucan compound represented by the structure:

wherein
(i) n is at least 6,
(ii) each R is independently an H or an organic group, and
(iii) the compound has a degree of substitution of about 0.05 to about 3.0 when substituted with the organic group;
and wherein the aqueous composition prepared in said method comprises a cellulase.

15. The method of claim 14 , wherein said cellulase is:
(i) comprised in the aqueous composition prior to said contacting step, or
(ii) added to the aqueous composition during or after said contacting step.

16. The method of claim 14 , wherein the poly alpha-1,3-glucan compound is substituted by the organic group.

17. The method of claim 14 , wherein:
(i) the viscosity of the aqueous composition is increased by said poly alpha-1,3-glucan compound, and/or
(ii) the shear thinning behavior or the shear thickening behavior of the aqueous composition is increased by said poly alpha-1,3-glucan compound.

18. The method of claim 17 , wherein the poly alpha-1,3-glucan compound is substituted by the organic group.

19. A method of treating a material, said method comprising: contacting the material with a composition according to claim 7 .

20. The method of claim 19 , wherein the material comprises fabric.

21. The method of claim 20 wherein the fabric comprises a (i) natural fiber, (ii) synthetic fiber, or a combination of both (i) and (ii).

22. The method of claim 20 , wherein the poly alpha-1,3-glucan ether compound adsorbs to the fabric.

Assignees

• Du Pont

Inventors

• Nagy Kevin D
• Caimi Perry G
• Dennes T Joseph
• Hennessey Susan Marie
• Poulose Ayrookaran J
• Paullin Jayme L

Classifications

• C11D3/38645 Primary

  containing cellulase · CPC title

• A61K2800/10

  General cosmetic use · CPC title

• D06M16/00

  Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic · CPC title

• C11D3/225

  etherified, e.g. CMC · CPC title

• A61Q19/00

  Preparations for care of the skin · CPC title