Siloxanyl-containing monomers

Details Siloxanyl-containing monomers Siloxanyl-containing monomers

2008-01-08

2008-01-08

Barts, Samuel (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

Reexamination Certificate

active

07317117

ABSTRACT:
Monomers for polymers having high oxygen permeability, high water content and a low modulus of elasticity are provided, and polymers and ophthalmic lenses comprised of said monomers are provided. They are monomers represented by formula (1) or (2) below:in-line-formulae description="In-line Formulae" end="lead"?X—O—(CH2CH2CH2O)m—(CH2)n—A   (1)in-line-formulae description="In-line Formulae" end="tail"?wherein, X is a polymerizable group having carbon-carbon unsaturated bonds; A is a siloxanyl group; R is H or a methyl group; m is an integer of 1 to 10; m′ is an integer of 2 to 10; and n is an integer of 2 to 10.

REFERENCES:
patent: 4709066 (1987-11-01), Chapman
patent: 1354898 (2003-10-01), None
“Polydimethylsiloxanes with vinyl ether end-groups. I. Synthesis and properties as polymerizable wetting agents”, European Polymer Journal (1995), 31(6), 521-5, Cazaux et al.
“Polydimethylsiloxanes with vinyl ether end-groups. I. Synthesis and properties as polymerizable wetting agents”, European Polymer Journal (1995), 31(6), 527-532, Cazaux et al.
European Search Report, dated Aug. 8, 2006, for European Appln. No. EP 01 97 2655.

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