Use of poly alpha-1,3-glucan ethers as viscosity modifiers

Patent metadata

Field	Value
Publication number	US-10865254-B2
Application number	US-201816007287-A
Country	US
Kind code	B2
Filing date	Jun 13, 2018
Priority date	Dec 16, 2013
Publication date	Dec 15, 2020
Grant date	Dec 15, 2020

Abstract

A hydrocolloid or aqueous solution comprising a poly alpha-1,3-glucan ether compound is disclosed having a viscosity of at least about 10 centipoise (cPs). The poly alpha-1,3-glucan ether compound in these compositions has a degree of substitution of about 0.05 to about 3.0. Also disclosed is a method for increasing the viscosity of a hydrocolloid or aqueous composition using a poly alpha-1,3-glucan ether compound.

First claim

What is claimed is:

1. A hydrocolloid or aqueous solution comprising a poly alpha-1,3-glucan ether compound represented by the structure:

wherein
(i) n is at least 6,
(ii) each R is independently an H or an organic group selected from the group consisting of alkyl and hydroxyl alkyl, and
(iii) the compound has a degree of substitution up to about 3.0,
wherein the hydrocolloid or aqueous solution is in contact with fabric in a washing machine.

2. The hydrocolloid or aqueous solution of claim 1 , wherein at least one organic group is selected from the group consisting of methyl, ethyl, hydroxypropyl, dihydroxypropyl, and hydroxyethyl.

3. The hydrocolloid or aqueous solution of claim 1 , wherein the compound contains one type of organic group.

4. The hydrocolloid or aqueous solution of claim 1 , wherein the compound contains two or more types of organic group.

5. The hydrocolloid or aqueous solution of claim 1 , wherein the degree of substitution is about 0.2 to about 2.0.

6. The hydrocolloid or aqueous solution of claim 1 , further comprising at least one surfactant.

7. The hydrocolloid or aqueous solution of claim 1 , further comprising at least one enzyme.

8. The hydrocolloid or aqueous solution of claim 7 , wherein the enzyme is selected from the group consisting of protease, cellulase, hemicellulase, peroxidase, xylanase, lipase, phospholipase, esterase, perhydrolase, cutinase, pectinase, pectate lyase, mannanase, keratinase, reductase, oxidase, phenoloxidase, lipoxygenase, ligninase, pullulanase, tannase, pentosanase, malanase, beta-glucanase, arabinosidase, hyaluronidase, chondroitinase, laccase, metalloproteinase, amadoriase, glucoamylase, arabinofuranosidase, phytase, isomerase, transferase, and amylase.

9. The hydrocolloid or aqueous solution of claim 1 , wherein the hydrocolloid or aqueous solution is comprised in a fabric care composition.

10. The hydrocolloid or aqueous solution of claim 9 , wherein the fabric care composition is a laundry detergent or fabric softener.

11. The hydrocolloid or aqueous solution of claim 1 , which is an aqueous solution.

12. The hydrocolloid or aqueous solution of claim 1 , wherein at least 90% of the glycosidic linkages of the poly alpha-1,3-glucan ether compound are alpha-1,3 glycosidic linkages.

13. The hydrocolloid or aqueous solution of claim 1 , wherein the fabric comprises natural fiber.

14. The hydrocolloid or aqueous solution of claim 13 , wherein the natural fiber comprises cellulosic fiber.

15. The hydrocolloid or aqueous solution of claim 14 , wherein the cellulosic fiber comprises cotton.

16. The hydrocolloid or aqueous solution of claim 1 , wherein the fabric comprises synthetic fiber.

17. The hydrocolloid or aqueous solution of claim 16 , wherein the synthetic fiber comprises polyester.

18. The hydrocolloid or aqueous solution of claim 1 , wherein the fabric comprises semi-synthetic fiber.

19. The hydrocolloid or aqueous solution of claim 18 , wherein the semi-synthetic fiber comprises rayon.

20. A hydrocolloid or aqueous solution comprising a poly alpha-1,3-glucan ether compound represented by the structure:

wherein
(i) n is at least 6,
(ii) each R is independently an H or an organic group, wherein the organic group is not carboxy alkyl, and
(iii) the compound has a degree of substitution up to about 3.0,
wherein the hydrocolloid or aqueous solution is in contact with fabric in a washing machine.

21. The hydrocolloid or aqueous solution of claim 20 , wherein the compound contains one type of organic group.

22. The hydrocolloid or aqueous solution of claim 20 , wherein the compound contains two or more types of organic group.

23. The hydrocolloid or aqueous solution of claim 20 , further comprising at least one surfactant.

24. The hydrocolloid or aqueous solution of claim 20 , further comprising at least one enzyme.

25. The hydrocolloid or aqueous solution of claim 24 , wherein the enzyme is selected from the group consisting of protease, cellulase, hemicellulase, peroxidase, xylanase, lipase, phospholipase, esterase, perhydrolase, cutinase, pectinase, pectate lyase, mannanase, keratinase, reductase, oxidase, phenoloxidase, lipoxygenase, ligninase, pullulanase, tannase, pentosanase, malanase, beta-glucanase, arabinosidase, hyaluronidase, chondroitinase, laccase, metalloproteinase, amadoriase, glucoamylase, arabinofuranosidase, phytase, isomerase, transferase, and amylase.

26. The hydrocolloid or aqueous solution of claim 20 , wherein the hydrocolloid or aqueous solution is comprised in a laundry detergent or fabric softener.

27. The hydrocolloid or aqueous solution of claim 20 , which is an aqueous solution.

28. The hydrocolloid or aqueous solution of claim 20 , wherein at least 90% of the glycosidic linkages of the poly alpha-1,3-glucan ether compound are alpha-1,3 glycosidic linkages.

29. The hydrocolloid or aqueous solution of claim 20 , wherein the fabric comprises natural fiber.

30. The hydrocolloid or aqueous solution of claim 29 , wherein the natural fiber comprises cellulosic fiber.

31. The hydrocolloid or aqueous solution of claim 20 , wherein the fabric comprises synthetic fiber.

32. The hydrocolloid or aqueous solution of claim 31 , wherein the synthetic fiber comprises polyester.

Assignees

• Dupont Ind Biosciences Usa Llc

Inventors

• Kasat Rahul B
• Paullin Jayme L
• Perticone Andrea M
• Dennes T Joseph
• Nambiar Rakesh
• Cobb Michael W

Classifications

• C08B37/0009 Primary

  alpha-D-Glucans, e.g. polydextrose, alternan, glycogen; (alpha-1,4)(alpha-1,6)-D-Glucans; (alpha-1,3)(alpha-1,4)-D-Glucans, e.g. isolichenan or nigeran; (alpha-1,4)-D-Glucans; (alpha-1,3)-D-Glucans, e.g. pseudonigeran; Derivatives thereof · CPC title

• A61K8/73

  Polysaccharides · CPC title

• C08J3/02

  Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques · CPC title

• C08L5/00

  Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00 · CPC title

• C12P19/04

  Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds · CPC title