Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1984-08-31
1986-04-15
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
528 32, 351160R, C08F 3008
Patent
active
045828849
ABSTRACT:
A copolymer composition, especially suited for fabricating optical lenses comprising a copolymer of copolymerized comonomers which include about one to about 25 percent by weight of an acryloxyalkylsilanol; about 0.5 to about 15 percent by weight of a polyacryloxyalkylpolysiloxane; about 5 to about 60 percent by weight of an siloxy substituted ester of acrylic or methacrylic acid; and from about 35 to about 90 percent by weight of an acrylic or methacrylic ester of an alkanol having from one to twenty carbon atoms.
Contact lenses and contact lens buttons are formed of such copolymer of copolymerized comonomers by conventional techniques, by injection molding, and by compression molding.
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patent: 4235985 (1980-11-01), Tanaka et al.
patent: 4330383 (1982-05-01), Ellis et al.
patent: 4419505 (1983-12-01), Ratkowski et al.
Marquis Melvyn I.
Mybeck Richard R.
Paragon Optical Inc.
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