Absorbent dressing comprising hydrophilic polymer prepared via Michael reaction
First Claim
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1. An absorbent dressing comprising a hydrophilic gel absorbent layer comprising the reaction product of:
- a) a first component acrylate polymer comprising a plurality of polymerized monomer units having pendent hydrophilic poly(alkylene oxide) groups, and a plurality of polymerized monomer units having pendent Michael donor groups;
b) a crosslinking agent comprising at least two Michael acceptor groups, andc) a monoacryl Michael acceptor component that is not a methacryl compound,wherein the ratio of Michael donor equivalents to total Michael acceptor group equivalents (of the crosslinking agent plus monoacryl compounds) is 1.2;
1 to 1;
1.2.
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Abstract
An absorbent dressing is described which comprises a crosslinked hydrophilic gel absorbent layer comprising a first component polymer comprising a plurality of polymerized monomer units having pendent hydrophilic groups, and pendent Michael donor groups; and a crosslinking agent comprising at least two Michael acceptor groups.
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15 Claims
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1. An absorbent dressing comprising a hydrophilic gel absorbent layer comprising the reaction product of:
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a) a first component acrylate polymer comprising a plurality of polymerized monomer units having pendent hydrophilic poly(alkylene oxide) groups, and a plurality of polymerized monomer units having pendent Michael donor groups; b) a crosslinking agent comprising at least two Michael acceptor groups, and c) a monoacryl Michael acceptor component that is not a methacryl compound, wherein the ratio of Michael donor equivalents to total Michael acceptor group equivalents (of the crosslinking agent plus monoacryl compounds) is 1.2;
1 to 1;
1.2. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification