Monomer, polymer, and ocular lens and contact lens each...

Details Monomer, polymer, and ocular lens and contact lens each... Monomer, polymer, and ocular lens and contact lens each...

2006-07-04

2006-07-04

Pezzuto, Helen L. (Department: 1713)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S279000, C526S333000

Reexamination Certificate

active

07071274

ABSTRACT:
A monomer as represented by general formula (a) or (a′) below, with which a polymer having high oxygen permeability and transparency and suited to an ophthalmic lens is obtained, is provided. Suitable monomers have the formula:wherein A is a siloxanyl group; R1and R2are H or methyl groups; R3is a substituted group that is selected from the group consisting of alkyl groups with 1 to 20 carbon atoms that may be substituted and aryl groups with 6 to 20 carbon atoms that may be substituted; m indicates an integer of 0 to 200.

REFERENCES:
patent: 4235985 (1980-11-01), Tanaka et al.
patent: 4433125 (1984-02-01), Ichinohe et al.
patent: 2137635 (1984-10-01), None
patent: 61-281116 (1986-12-01), None
patent: 03-286773 (1991-12-01), None
Silicone Hydrogels for Contact Lens Application, Jay F. Kunzler
Supplementary European Search Report, dated Dec. 30, 2004, for European Appln. No. EP 02702862.

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