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US 2014/0179913 A1Published application
Preparation of poly alpha-1,3-glucan ethers
AssigneeE. I. Du Pont de Nemours and Company
InventorsJAYME L. PAULLIN, Andrea M. Perticone, Rahul B. Kasat, T Joseph Dennes
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Abstract
Poly alpha-1,3-glucan ether compounds are disclosed herein with a degree of substitution of about 0.05 to about 3.0. Also disclosed are methods of producing poly alpha-1,3-glucan ether compounds.
Claims15
A composition 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, and
- (iii) the compound has a degree of substitution of about 0.05 to about 3.0.
1 more element
A method of producing a poly alpha-1,3-glucan ether compound, the method comprising:
- (a) contacting poly alpha-1,3-glucan in a reaction under alkaline conditions with at least one etherification agent comprising an organic group, wherein the etherification agent is etherified to the poly alpha-1,3-glucan thereby producing 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 the organic group, and
- (iii) the compound has a degree of substitution of about 0.05 to about 3.0;
- and
- (b) optionally, isolating the poly alpha-1,3-glucan ether compound produced in step (a).
4 more elements
Dependencies are inferred from the claim text.