Poly alpha-1,6-glucan derivatives and compositions comprising same

Patent metadata

Field	Value
Publication number	US-12486338-B2
Application number	US-202118007583-A
Country	US
Kind code	B2
Filing date	Jun 9, 2021
Priority date	Jun 10, 2020
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

The disclosure relates to poly alpha-1,6-glucan derivatives comprising poly alpha-1,6-glucan substituted with at least one organic group linked to the poly alpha-1,6-glucan through a linkage moiety selected from ether, sulfonyl, carbonate, or carbamoyl/carbamate, and having a degree of substitution of about 0.001 to about 3.0. The poly alpha-1,6-glucan comprises a backbone of glucose monomer units wherein greater than or equal to 40% of the glucose monomer units are linked via alpha-1,6 glycosidic linkages, and optionally at least 5% of the backbone glucose monomer units have branches via alpha-1,2 and/or alpha-1,3 glycosidic linkages. Compositions comprising a poly alpha-1,6-glucan derivative can be useful in various applications.

First claim

What is claimed is:

1 . A composition comprising a poly alpha-1,6-glucan derivative that comprises:
(i) poly alpha-1,6-glucan substituted with at least one organic group linked to the poly alpha-1,6-glucan through a linkage moiety selected from —O—, —OSO 2 —, —OCOO—, or —OCONH—/—OCO —; (ii) a weight-average degree of polymerization of about 5 to about 4000; and iii) a degree of substitution of about 0.001 to about 3.0; wherein the poly alpha-1,6-glucan comprises a backbone of glucose monomer units, wherein greater than or equal to 90% of the backbone glucose monomer units are linked via alpha-1,6 glycosidic linkages, at least about 5% of the backbone glucose monomer units have branches via alpha-1,2 glycosidic linkages, less than 1% of the glycosidic linkages of the poly alpha-1,6-glucan are alpha-1,3 glycosidic linkages, and wherein the poly alpha-1,6-glucan is not substituted with a hydrophilic group.

2 . The composition of claim 1 , wherein the degree of substitution is about 0.01 to about 1.5.

3 . The composition of claim 1 , wherein the degree of substitution is about 0.6.

4 . The composition of claim 1 , wherein the degree of substitution is about 0.2 to about 0.6.

5 . The composition of claim 1 , wherein at least one the linkage moiety is —O—.

6 . The composition of claim 1 , wherein at least one the linkage moiety is —OCONH—/—OCO —, which optionally is —OCONH—.

7 . The poly alpha-1,6-glucan derivative composition of claim 1 , wherein the organic group comprises a C 1 to C 18 alkyl group, a hydroxy alkyl group, a carboxy alkyl group, a C 2 to C 18 alkenyl group, a C 2 to C 18 alkynyl group, a benzyl group, a C 6 to C 20 aryl group, or a polyether comprising repeat units of (—CH 2 CH 2 O—) and/or (—CH 2 CH(CH 3 )O—) wherein the total number of repeat units is in the range of 2 to 100.

8 . The composition of claim 1 , wherein the organic group comprises a C 1 -C 10 alkyl group, a C 1 -C 10 hydroxyl alkyl group, or a polyether comprising repeat units of (—CH 2 CH 2 O—) and/or (—CH 2 CH(CH 3 )O—) wherein the total number of repeat units is in the range of 2 to 100.

9 . The composition of claim 1 , wherein the organic group comprises a benzyl group.

10 . The composition of claim 1 , wherein the organic group comprises a benzyl group substituted with one or more of a halogen, cyano group, ester group, amide group, ether group, C 1 to C 6 alkyl group, aryl group, C 2 to C 6 alkene group, or C 2 to C 6 alkyne group.

11 . The composition of claim 1 , wherein the organic group comprises an alkyl group that is substituted with another alkyl group.

12 . The composition of claim 11 , wherein the organic group comprises 2-ethylhexyl.

13 . The composition of claim 1 , wherein the poly alpha-1,6-glucan derivative has a biodegradability as determined by the Carbon Dioxide Evolution Test Method of at least 10% after 90 days.

14 . The composition of claim 1 , wherein the poly alpha-1,6-glucan derivative has a weight-average degree of polymerization of about 5 to about 500.

15 . The composition of claim 1 , in the form of a liquid, gel, powder, hydrocolloid, aqueous solution, granule, tablet, capsule, bead or pastille, single compartment sachet, pad, multi-compartment sachet, single compartment pouch, or multi-compartment pouch.

16 . The composition of claim 1 , further comprising one or more of a detergent builder, complexing agent, polymer, soil release polymer, surfactancy-boosting polymer, bleaching agent, bleach activator, bleaching catalyst, fabric conditioner, clay, foam booster, suds suppressor, anti-corrosion agent, soil-suspending agent, anti-soil re-deposition agent, dye, bactericide, tarnish inhibitor, optical brightener, perfume, saturated or unsaturated fatty acid, dye transfer-inhibiting agent, chelating agent, hueing dye, calcium cation, magnesium cation, visual signaling ingredient, anti-foam, structurant, thickener, anti-caking agent, starch, sand, or gelling agent.

17 . The composition of claim 1 , wherein
(i) the composition further comprises one or more of a perfume, fragrance, flavor, air odor-reducing agent, insect repellent, insecticide, bubble-generating agent, non-woven material, colorant, preservative, antioxidant, emulsifier, emollient, oil, medicament, or suspending agent; and/or (ii) the composition is a disinfecting product, cleaning product, coating product, wipe, or hard surface cleaner such as for a floor, countertop, table, desk, tub/shower, sink, toilet bowl, door/cabinet handle/panel, or glass/window.

18 . A method for treating a substrate, the method comprising the steps:
(a) providing a composition according to claim 1 ; (b) contacting the substrate with the composition; and (c) optionally rinsing the substrate; wherein the substrate is a textile, fabric, carpet, upholstery, apparel, or surface.

19 . The composition of claim 1 , further comprising a surfactant.

20 . The composition of claim 1 , further comprising an enzyme.

Assignees

• Nutrition & Biosciences Usa 4 Inc

Inventors

• Huang Zhengzheng
• Adelman Douglas J
• Fairweather Neil Thomas
• Fliter Kristi Lynn
• Good David
• Lu Helen S M
• Qiu Weiming
• Si Gang
• Sivik Mark Robert

Classifications

• C11D3/227

  with nitrogen-containing groups · CPC title

• C11D3/222

  Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin · CPC title

• C08L5/02

  Dextran; Derivatives thereof · CPC title

• C11D3/228

  with phosphorus- or sulfur-containing groups · CPC title

• C11D3/226

  esterified · CPC title