Cross-linked alkyl methacrylate-N-vinyllactam polymer compositio

Details Cross-linked alkyl methacrylate-N-vinyllactam polymer compositio Cross-linked alkyl methacrylate-N-vinyllactam polymer compositio

1977-11-03

1980-01-22

Anderson, Harold D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

351160H, 526 62, 526 64, 526261, 526264, 526273, 526320, 526322, 526327, 5263297, C08L 3906, C08L 3310, C08L 3106

Patent

active

041849922

ABSTRACT:
Provided is a cross-linked polymer composition which can be in a transparent polymeric gel form having an equilibrium water content of at least 60 wt.% for use in soft contact lenses. The cross-linked polymer composition is prepared by polymerizing, using a bulk polymerization procedure, a monomer mixture comprising an alkyl methacrylate and an N-vinyllactam in the presence of a cross-linking agent comprising at least one compound selected from vinyl acrylate, vinyl methacrylate, triallyl isocyanurate and vinyl carboxylates expressed by the formula:

REFERENCES:
patent: 3532679 (1970-10-01), Steckler
patent: 3772235 (1973-11-01), Stamberger
patent: 3949021 (1976-04-01), Kunitomo et al.

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