Contact lenses of high water content

Details Contact lenses of high water content Contact lenses of high water content

1977-12-27

1979-06-12

Wong, Jr., Harry

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

351160H, 526262, 526263, C08F21816, C08F22012, C08F22606, G02C 704

Patent

active

041580893

ABSTRACT:
Contact lenses comprising hydrophilic units of which the only or major proportion are derived from an N-vinyl heterocyclic monomer hydrophobic units derived from a hydrophobic monomer, and allylic cross-linking units containing more than one polymerizable double bond selected from monoallyl itaconate, diallyl itaconate, triallyl cyanurate, triallyl isocyanurate, triallyl trimellitate, N,N-diallylmelamine, other multifunctional allyl monomers formed by the esterification of polybasic acids with allyl alcohol, or mixtures thereof; the proportions of said monomers being adjusted to give the desired water content and resistance to dissolution when the polymer is swollen to equilibrium in an aqueous environment.

REFERENCES:
patent: 2831836 (1958-04-01), Forchielli
patent: 2941980 (1960-06-01), Robinson
patent: 3532679 (1970-10-01), Steckler
patent: 3937680 (1976-02-01), DE Carle
patent: 3949021 (1976-04-01), Kunitomo et al.
patent: 4038264 (1977-07-01), Rostoker et al.

Affiliated with

Also associated with

Rating

Contact lenses of high water content does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Contact lenses of high water content, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Contact lenses of high water content will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1110110