Material for use in the manufacture of polymeric articles

Details Material for use in the manufacture of polymeric articles Material for use in the manufacture of polymeric articles

1995-02-21

1996-03-12

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

523106, 524520, 524544, 351160R, 351160H, C08F24600, C08F 1820

Patent

active

054986818

ABSTRACT:
Disclosed is a polymeric article at least a portion of which is manufactured from a hydrogel material having a hydration level of from between about 45% and 56% by weight, which hydrogel is formed from a xerogel which is a copolymer system that can be solvolyzed and hydrated and during which undergoes a linear expansion of from about -7% to about +7%. The polymeric article is comprised of a copolymer system comprising dichloroacetate ester of glyceryl acrylate, methacrylate and ethacrylate and one or more compatible ethylenically unsaturated monomers without such solvolyzable groups.

REFERENCES:
patent: 4272422 (1981-06-01), Tanaka
patent: 4578504 (1984-03-01), Hammar
patent: 4594401 (1986-06-01), Takahashi et al.
patent: 4638040 (1987-01-01), Hammar
patent: 4820747 (1989-04-01), Chen
patent: 4921884 (1990-05-01), Hammar et al.
patent: 5362768 (1994-11-01), Askari et al.
Derwent Abstract 91-024932/04, Basic Abstracts Journal, Section CH, Week 9104, 27 Mar, 1991, Derwent Publications, Ltd., London, GB; class A, p. 368. JP2 293817.

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