Soft contact lens

Details Soft contact lens Soft contact lens

Filed on

1985-01-02

Date issued

1987-03-17

Examiner

Wong, Jr., Harry

Patent Class

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

SubClass

Synthetic resins

SubSubClass

Polymers from only ethylenic monomers or processes of...

Other Related Categories

351160R, 351160H, C08F21418, G02C 704

Type

Patent

Status

active

Patent number

046508430

Description

ABSTRACT:
When trifluoroethyl methacrylate, hexafluoroisopropyl methacrylate, pentafluoro-n-propyl methacrylate and/or pentafluoro-n-butyl methacrylate which are fluorine-containing monomers, are added to a conventional monomer mixture for producing a soft contact lens, the resulting soft contact lens has the same optical properties and elasticity as conventional soft contact lenses have, and is very superior to the conventional ones in resistance to deposit and in shape stability.

REFERENCES:
patent: 3542461 (1970-11-01), Girard et al.
patent: 3808179 (1974-04-01), Gaylord
patent: 3950315 (1976-04-01), Cleaver
patent: 4130706 (1978-12-01), Plambeck
patent: 4327202 (1982-04-01), Foley

Affiliated with

Also associated with

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