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US 8,476,402 B2Granted
Carbohydrate lactone polymers
AssigneeImperial Innovations Limited
InventorsCharlotte K. Williams, Molly Morag Stevens, Min Tang
Life of this patent
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Abstract
The present invention relates to a novel carbohydrate lactone, functionalized aliphatic polyesters and copolymers formed therefrom, and processes for the preparation thereof from renewable resources.
Claims33
A polymer formed from monomers of formula (I)
- wherein R1 is selected from hydrogen, acyl, ester, heteroaryl, alkylheteroaryl, silyl, sulfonyl, a drug molecule or a peptide;
- R2 is hydrogen or OR1′;
- and
- R3 is methyl or —CH2OR1″;
- wherein R1′ and R1″ are both as defined for R1, each occurrence of R1, R1′ and R1″ may be the same or different.
2 more elements
A polymer formed from monomers of formula (I)
- wherein R1 is selected from hydrogen, alkyl, haloalkyl, acyl, ester, aryl, heteroaryl, alkylaryl, alkylheteroaryl, silyl, sulfonyl, a drug molecule or a peptide;
- R2 is hydrogen or OR1′;
- and
- R3 is methyl or —CH2OR1″;
- wherein R1′, and R1″ are both as defined for R1, each occurrence of R1, R1′ and R1″ may be the same or different,
- wherein the polymer comprises a mixture of a cyclic polymer and a linear polymer,
- wherein the cyclic and linear polymers have the structures set out below:
- wherein n is between 1 and 60 and wherein termination of the linear polymer (*) is OH or OR wherein R is alkyl or alkylaryl.
5 more elements
A polymer formed from monomers of formula (I)
- wherein R1 is selected from hydrogen, alkyl, haloalkyl, acyl, ester, aryl, heteroaryl, alkylaryl, alkylheteroaryl, silyl, sulfonyl, a drug molecule or a peptide;
- R2 is hydrogen or OR1′;
- and
- R3 is methyl or —CH2OR1″;
- wherein R1′ and R1″ are both as defined for R1, each occurrence of R1, R1′ and R1″ may be the same or different,
- wherein the polymer is a cyclic polymer having the structure:
- wherein n is between 1 and 60.
4 more elements
A polymer formed from monomers of formula (I)
- wherein R1 is selected from hydrogen, alkyl, haloalkyl, acyl, ester, aryl, heteroaryl, alkylaryl, alkylheteroaryl, silyl, sulfonyl, a drug molecule or a peptide;
- R2 is hydrogen or OR1′;
- and
- R3 is methyl or —CH2OR1″;
- wherein R1′ and R1″ are both as defined for R1, each occurrence of R1, R1′ and R1″ may be the same or different,
- wherein the polymer is a copolymer represented by the structure:
- wherein the mole fraction of x within the copolymer is between 0.5% and 20% and the mole fraction of y is between 80% and 99.5%.
4 more elements
Dependencies are inferred from the claim text.