Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1986-05-19
1988-09-06
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C08F13008, C08F23008
Patent
active
047694319
ABSTRACT:
A copolymer composition, especially suited for fabricating optical lenses comprising a copolymer of copolymerized comonomers which include in weight percent about one to about twenty percent by weight of an acryloxyalkylsilanol; about one to about fifteen percent of a polyacryloxyalkylpolysiloxane; about thirty to about seventy five percent of an siloxy substituted ester of acrylic or methacrylic acid; from about one to about 35 percent of an alkyl or cycloalkyl acrylate or methacrylate having from one to twenty carbon atoms; from about one to about twenty percent of a polyol diacrylate; and from about one to about twenty percent of a wetting monomer.
Contact lenses and contact lens buttons are formed of such copolymer of copolymerized comonomers by conventional techniques, by injection molding, and by compression molding.
REFERENCES:
patent: 4419505 (1983-12-01), Ratkowski et al.
patent: 4424328 (1984-01-01), Ellis
patent: 4535138 (1985-08-01), Ratkowski et al.
patent: 4582884 (1986-04-01), Ratkowski et al.
Kulkosky Peter F.
Mybeck Richard R.
Paragon Optical Inc.
Schofer Joseph L.
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