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

• US 10,005,850 B2
• Filed: 12/15/2014
• Issued: 06/26/2018
• Est. Priority Date: 12/16/2013
• Status: Active Grant

• Current Assignee: Nutrition & Biosciences USA 4, Inc. (International Flavors & Fragrances Incorporated)
• Original Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Inventors: Kasat, Rahul B., Paullin, Jayme L., Perticone, Andrea M., Dennes, T. Joseph, Nambiar, Rakesh, Cobb, Michael W.
• Primary Examiner(s): Olson, Eric
• Application Number:
  US15/103,664
• Publication Number:
  US 20160304629A1
• Time in Patent Office: 1,289 Days
• Field of Search: None
• CPC Class Codes: A61K 2800/48 Thickener, Thickening system
• CPC Class Codes: A61K 8/73 Polysaccharides
• CPC Class Codes: A61Q 11/00 Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
• CPC Class Codes: C08B 37/0009 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 Class Codes: C08L 5/00 Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
• CPC Class Codes: C11D 3/225 etherified, e.g. CMC
• CPC Class Codes: C12P 19/04 Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
• CPC Class Codes: D06L 1/00 Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods
• CPC Class Codes: D06L 1/12 using aqueous solvents

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.

Claims

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

2. The hydrocolloid or aqueous solution of claim 1, wherein at least one organic group is selected from the group consisting of alkyl, hydroxy alkyl, and carboxy alkyl.

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

4. The hydrocolloid or aqueous solution of claim 2, wherein the compound contains one type of organic group.

5. The hydrocolloid or aqueous solution of claim 2, wherein the compound contains two or more types of organic group.

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

7. The hydrocolloid or aqueous solution of claim 4, wherein the organic group is carboxymethyl.

8. The hydrocolloid or aqueous solution of claim 1, wherein the pH of the hydrocolloid or aqueous solution is between about 2.0 to about 12.0.

9. The hydrocolloid or aqueous solution of claim 1, wherein the hydrocolloid or aqueous solution has shear thinning behavior or shear thickening behavior.

10. The hydrocolloid or aqueous solution of claim 1, wherein the hydrocolloid or aqueous solution is in the form of a personal care product, pharmaceutical product, food product, household product, or industrial product.

17. The hydrocolloid or aqueous solution of claim 1, which is a hydrocolloid.

18. The hydrocolloid or aqueous solution of claim 17, wherein at least one organic group is selected from the group consisting of alkyl, hydroxy alkyl, and carboxy alkyl.

19. The hydrocolloid or aqueous solution of claim 18, wherein at least one organic group is selected from the group consisting of carboxymethyl, methyl, ethyl, hydroxypropyl, dihydroxypropyl, and hydroxyethyl.

20. The hydrocolloid or aqueous solution of claim 18, wherein the compound contains one type of organic group.

21. The hydrocolloid or aqueous solution of claim 20, wherein the organic group is carboxymethyl.

11. A method for increasing the viscosity of an aqueous composition, the method comprising:

contacting a poly alpha-1,3-glucan ether compound with the aqueous composition, wherein the viscosity of the aqueous composition is increased by said compound,

wherein said compound is represented by the structure;

12. The method of claim 11, wherein said contacting is performed by mixing or dissolving the poly alpha-1,3-glucan ether compound in the aqueous composition.

13. The method of claim 12, wherein the aqueous composition is not filtered after said mixing or dissolving.

14. The method of claim 12, wherein said mixing or dissolving comprises a homogenization step.

15. The method of claim 11, wherein the shear thinning behavior or the shear thickening behavior of the aqueous composition is increased by said contacting.

16. A method of treating a material, said method comprising:

contacting a material with an aqueous composition comprising a poly alpha-1,3-glucan ether compound represented by the structure;

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

23. The composition of claim 22, which is an aqueous composition.