Copolymer for contact lens, its preparation and contact lens mad

Details Copolymer for contact lens, its preparation and contact lens mad Copolymer for contact lens, its preparation and contact lens mad

1978-03-20

1979-02-13

Wong, Jr., Harry

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

20415922, 260 296TA, 351160R, 526232, 526264, 526279, C08F22028, C08F23008, G02C 704

Patent

active

041396928

ABSTRACT:
A copolymer suitable for use as contact lenses, comprising a polymerization product of (a) at least one monomer selected from methyldi(trimethylsiloxy)sylylpropylglycerol methacrylate and methyldi(trimethylsiloxy)sylylpropylglycerolethyl methacrylate, (b) a hydrophilic monomer, (c) a methacrylic acid alkyl ester and (d) a cross-linking agent having at least two copolymerizable functional groups. Contact lenses made of the above copolymer has excellent oxygen permeability and can be comfortably worn continuously for a long term without a foreign body sensation and pain.

REFERENCES:
patent: 3787380 (1974-01-01), Stamberger
patent: 3937680 (1976-02-01), DE Carle
patent: 3951893 (1976-04-01), Gander
patent: 4022754 (1977-05-01), Howes et al.

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