Process of producing soft contact lenses

Details Process of producing soft contact lenses Process of producing soft contact lenses

1977-02-25

1979-03-06

Marquis, Melvyn I.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 297T, 264 1, 351160H, 526317, 526320, 526321, 526325, C08F 1824, C08F21602

Patent

active

041430174

ABSTRACT:
A soft contact lens having a water content of 20 to 45% and a tensile strength of at least 500 g/mm.sup.2 can be produced by pouring into a mold a composition comprising 70 to 90% by weight of an alkylene glycol monomethacrylate, 0 to 2% by weight of a polyfunctional monomer as a crosslinking agent, 0 to 5% by weight of an unsaturated carboxylic acid containing at least one carboxyl group in its molecule, 2 to 25% by weight of a methacrylic acid ester and 0 to 10% by weight of a vinyl monomer such as vinyl acetate, effecting polymerization of the composition, processing the resulting polymer into a lens, and then hydrating and swelling the lens thus obtained.

REFERENCES:
patent: 3317450 (1967-05-01), Grenley et al.
patent: 3892721 (1975-07-01), Gustafson
patent: 3988274 (1976-10-01), Masuhara et al.
patent: 3992563 (1976-11-01), Tanaka
patent: 4028295 (1977-07-01), Loshaek

Affiliated with

Also associated with

Rating

Process of producing soft contact lenses does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process of producing soft contact lenses, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process of producing soft contact lenses will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-920630