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Surface wettable silicone hydrogels

  • US 5,358,995 A
  • Filed: 05/15/1992
  • Issued: 10/25/1994
  • Est. Priority Date: 05/15/1992
  • Status: Expired due to Term
First Claim
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1. A silicone-containing, hydrogel material formed from the polymerization product of a monomer mix comprising:

  • a) an acrylic-capped polysiloxane prepolymer represented by the formula;

    ##STR4## wherein;

    A and A'"'"' are independently an ester or amide of an acrylic or a methacrylic acid;

    R1 -R10 are independently an alkyl, fluoroalkyl, alcohol, ether, or fluoroether group having 1-10 carbons, or an aromatic group having 6-18 carbons;

    m, n, and p are independently 0 to 200 m+n+p being from about 23 to 200; and

    a and b are independently 1 to 10;

    b) a bulky polysiloxanylalkyl (meth)acrylate monomer represented by the formula;

    ##STR5## wherein;

    X is O or N--R;

    R is H or CH3 ;

    R11 -R19 are independently an alkyl, fluoroalkyl, alcohol, ether or fluoroether group having 1-10 carbons, or an aromatic group having 6-18 carbons; and

    a is 1, or 3 to 10; and

    c) at least one hydrophilic monomer.

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