IT1048411B - N-vinyl or n-allyl polymers - with unsatd esters and glycidyl esters forming hydrogels
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N-vinyl or n-allyl polymers - with unsatd esters and glycidyl esters forming hydrogels
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IT1048411B
IT1048411BIT6932273AIT6932273AIT1048411BIT 1048411 BIT1048411 BIT 1048411BIT 6932273 AIT6932273 AIT 6932273AIT 6932273 AIT6932273 AIT 6932273AIT 1048411 BIT1048411 BIT 1048411B
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Application filed by Union Optics CorpfiledCriticalUnion Optics Corp
Priority to IT6932273ApriorityCriticalpatent/IT1048411B/en
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Publication of IT1048411BpublicationCriticalpatent/IT1048411B/en
Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications
(AREA)
Abstract
A water insol., water swellable copolymer comprises 50-90, pref. 60-70% of (a) heterocyclic monomer selected from N-vinyl lactams, N-vinyl imidazolidene, N-vinyl succinimide, N-vinyl diglycol imide, N-vinyl glutarimide, N-vinyl-3-morpholinone and/or N-vinyl-5-methyl-3-morpholinone, 5-40, pref. 25-35 wt.% of (b) unstd. ester selected from 1-22C alkyl (meth)acrylates, vinyl esters of satd. monocarboxylic acids of =22C and 0.5-30, pref. 2.5-15 wt.% of (c) glycidyl esters selected from glycidyl (meth)acrylate and -crotonate. The polymers form transparent hydrogels for use as contact lenses.
IT6932273A1973-08-011973-08-01N-vinyl or n-allyl polymers - with unsatd esters and glycidyl esters forming hydrogels
IT1048411B
(en)
POLYMERS OF ETHYLENE CONTAINING UNITS DERIVED FROM MALEIC ACID ANHYDRIDE AND ALKYL (METH) ACRYLATES, THEIR PROCEDURES FOR THEIR PREPARATION AND THEIR USE FOR THE MOVIE PREPARATION