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