Hydrolytically degradable hydrophilic gels and the method for preparation thereof using N,O-dimethacryloylhydroxylamine as a cross-linking agent
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United States of America Patent
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Jul 14, 1992
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N/A
app pub date -
Dec 10, 1991
filing date -
Dec 20, 1989
priority date (Note) -
Expired
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Abstract
The solution pertains to hydrolytically degradable hydrophilic gels consisting of the individual chains of hydrophilic polymer interconnected with crosslinks containing the structure unit ##STR1## The method for preparation of the hydrolytically degradable gels consists in subjecting hydrophilic monomers or their mixture to the radical polymerization or copolymerization, or to copolymerization with hydrophobic monomers, in the presence of a new compound--N,O-dimethacryloylhydroxylamine--as a crosslinking agent, and, if desired, in the presence of a solvent, whereas the amount of hydrophilic monomers is 50 to 99.8 molar percent related to all monomers present.
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