Biodegradable elastomers
First Claim
1. An elastomeric cross-linked polyester comprising:
- a polymeric unit of the general formula (-A-B-)n, cross-linked between a plurality of the A components of the polyester, wherein the crosslinks contain a single dioic acid ester functionality;
wherein,A represents a substituted or unsubstituted ester, wherein A comprises a free hydroxyl group prior to crosslinking,B represents a substituted or unsubstituted ester comprising at least two acid ester functionalities; and
n represents an integer greater than 1.
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Accused Products
Abstract
The present inventions in various aspects provide elastic biodegradable polymers. In various embodiments, the polymers are formed by the reaction of a multifunctional alcohol or ether and a difunctional or higher order acid to form a pre-polymer, which is cross-linked to form the elastic biodegradable polymer. In preferred embodiments, the cross-linking is performed by functionalization of one or more OR groups on the pre-polymer backbone with vinyl, followed by photopolymerization to form the elastic biodegradable polymer composition or material. Preferably, acrylate is used to add one or more vinyls to the backbone of the pre-polymer to form an acrylated pre-polymer. In various embodiments, acrylated pre-polymers are co-polymerized with one or more acrylated co-polymers.
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Citations
30 Claims
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1. An elastomeric cross-linked polyester comprising:
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a polymeric unit of the general formula (-A-B-)n, cross-linked between a plurality of the A components of the polyester, wherein the crosslinks contain a single dioic acid ester functionality;
wherein,A represents a substituted or unsubstituted ester, wherein A comprises a free hydroxyl group prior to crosslinking, B represents a substituted or unsubstituted ester comprising at least two acid ester functionalities; and n represents an integer greater than 1. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An elastomeric cross-linked polyester comprising:
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a polymeric unit of the general formula (-A-B-)n cross-linked between at least a plurality of the A components of the polyester, the crosslinks forming a single dioic acid ester;
wherein,A represents a substituted or unsubstituted ester, wherein A comprises a free hydroxyl group prior to crosslinking, B represents a substituted or unsubstituted ester comprising at least two acid ester functionalities; and n represents an integer greater than 1, wherein the crosslinks are formed by reacting the free hydroxyl groups on a plurality of the A components of the polyester with an acrylate or an acrylic acid to form a mixture of acrylated pre-polymers; and reacting the acrylated prepolymers to crosslink at least a portion of the acrylated pre-polymers. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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Specification