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

Patent metadata

Field	Value
Publication number	US-10190079-B2
Application number	US-201715638808-A
Country	US
Kind code	B2
Filing date	Jun 30, 2017
Priority date	Jun 19, 2014
Publication date	Jan 29, 2019
Grant date	Jan 29, 2019

Abstract

Compositions comprising cellulase and at least one poly alpha-1,3-glucan ether compound having a degree of substitution with a positively charged 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 comprising the structure:

wherein
(i) n is at least 6,
(ii) each R is independently H or a positively charged organic group, wherein at least one R group is a positively charged organic group,
(iii) the poly alpha-1,3-glucan compound has a degree of substitution of about 0.05 to about 3.0 with the positively charged organic group, and
(iv) at least 90% of the glycosidic linkages of the poly alpha-1,3-glucan compound are alpha-1,3 glycosidic linkages.

2. The composition of claim 1 , wherein the positively charged organic group comprises a substituted ammonium group.

3. The composition of claim 2 , wherein the positively charged organic group comprises a trimethylammonium group.

4. The composition of claim 2 , wherein the positively charged organic group is a quaternary ammonium group.

5. The composition of claim 1 , wherein the positively charged organic group comprises a hydroxy alkyl group or alkyl group.

6. The composition of claim 1 , wherein the positively charged organic group comprises a hydroxy alkyl group and a trimethylammonium group.

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

8. The composition of claim 7 , wherein the composition is a fabric care product.

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

10. The composition of claim 9 , wherein the composition has a viscosity of at least about 10 centipoise.

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

wherein
(i) n is at least 6,
(ii) each R is independently H or a positively charged organic group, wherein at least one R group is a positively charged organic group,
(iii) the poly alpha-1,3-glucan compound has a degree of substitution of about 0.05 to about 3.0 with the positively charged organic group, and
(iv) at least 90% of the glycosidic linkages of the poly alpha-1,3-glucan compound are alpha-1,3 glycosidic linkages;
and wherein the aqueous composition prepared in said method comprises a cellulase.

12. The method of claim 11 , 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.

13. The method of claim 12 , 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.

14. A method of treating a material, said method comprising: contacting the material with a composition according to claim 9 .

15. The method of claim 14 , wherein the material comprises fabric.

16. The method of claim 15 , wherein the poly alpha-1,3-glucan compound adsorbs to the fabric.

17. The method of claim 15 , wherein the fabric comprises (i) natural fiber, (ii) synthetic fiber, or a combination of both (i) and (ii).

18. The composition of claim 1 , wherein at least 95% of the glycosidic linkages of the poly alpha-1,3-glucan compound are alpha-1,3 glycosidic linkages.

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

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

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

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

23. The method of claim 11 , wherein at least 95% of the glycosidic linkages of the poly alpha-1,3-glucan compound are alpha-1,3 glycosidic linkages.

24. The method of claim 14 , wherein at least 95% of the glycosidic linkages of the poly alpha-1,3-glucan compound are alpha-1,3 glycosidic linkages.

Assignees

• Du Pont

Inventors

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

Classifications

• C11D3/225

  etherified, e.g. CMC · CPC title

• A61K8/66

  Enzymes · CPC title

• A61Q19/00

  Preparations for care of the skin · CPC title

• C11D3/38645 Primary

  containing cellulase · CPC title

• C11D1/83

  Mixtures of non-ionic with anionic compounds · CPC title