Hydrogel material and method of preparation
AssigneeSpenco Medical Corporation
InventorFredric J. Weber
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Abstract
Hydrogel materials suitable for use in bandages and the like have been made from modified copolymers of poly(methyl vinyl ether/maleic anhydride). The modifying groups are three to seven carbon amines, amides or alcohols having a terminal vinyl group which may crosslink to other such modifiers or to intermediary difunctional coagents. A method for REDOX initiated crosslinking and continuous casting of the hydrogel, on a support material suitable for employment in a bandage, is also disclosed.
Claims10
A hydrogel material comprising crosslinked copolymer chains of alkyl vinyl ether and maleic anhydride wherein said copolymer chains comprise the repeated structural unit:
- ##STR5## wherein n is an integer greater than one representing the number of said structural units in each of said copolymer chains, Y is an alkyl group having one to three carbon atoms, and wherein R is a modifying group selected from the group consisting of -NH--(CH.sub.2).sub.1-5 --CH.dbd.CH.sub.2 and ##STR6## Z is selected from one bivalent oxygen atom, two hydroxyl groups or one hydroxyl group and one R group, and wherein one of said copolymer chains is crosslinked to another of said copolymer chains via linkage of an R group of one of said copolymer chains with an R group of another of said copolymer chains.
A hydrogel material comprising crosslinked copolymer chains of alkyl vinyl ether and maleic anhydride, each of said copolymer chains comprises the repeated structural unit:
- ##STR8## wherein n is an integer greater than one representing the number of said structural unit in each of said copolymer chains, Y is an alkyl group having one to three carbon atoms, Z is selected from one bivalent oxygen atom, two hydroxyl groups or one hydroxyl group and one R group, R is an unsaturated alcohol radical, and wherein one of said copolymer chains is crosslinked to another of said copolymer chains via linkage of an R group of one of said copolymer chains with an R group of another of said copolymer chains.
Dependencies are inferred from the claim text.