Monomeric units useful for reducing the modulus of silicone hydrogels
First Claim
1. A hydrogel composition formed by polymerizing a monomer mix comprising monomeric units represented by Formula I:
- ##STR21## wherein;
A is an activated unsaturated group;
R and D independently are alkyl, alkylene or haloalkyl groups having 1 to 10 carbon atoms wherein said carbon atoms may include ether linkages therebetween;
R1, R2, R3 and R4 are independently selected from;
alkyl or haloalkyl groups wherein ether linkages may be included between carbon atoms;
siloxane groups; and
carbocyclic ring groups having from 6 to 18 carbon atoms;
m is an integer from 1 to 500;
n is an integer from 1 to 20;
x and y are 0 or 1;
z is 1 or 2;
and x+y+z=3;
so long as at least one of R1 or R2 is an alkyl group having from 1 to 10 carbon atoms.
7 Assignments
0 Petitions
Accused Products
Abstract
Monomeric units useful in reducing the modulus of hydrogels are disclosed. Silicone hydrogels including the subject monomeric units are especially useful in the formation of biomedical articles such as silicone hydrogel contact lenses. ##STR1## wherein: A is an activated unsaturated group;
R and D independently are alkyl, alkylene or haloalkyl groups having 1 to 10 carbon atoms wherein said carbon atoms may include ether linkages therebetween;
R1, R2, R3 and R4 are independently selected from: alkyl or haloalkyl groups wherein ether linkages may be included between carbon atoms; siloxane groups, and carbocyclic ring groups having from 6 to 18 carbon atoms;
m is an integer from 1 to 500; n is an integer from 1 to 20; x and y are 0 or 1;
z is 1 or 2; and x+y+z=3;
so long as at least one of R1 or R2 is an alkyl group having from 1 to 10 carbon atoms.
-
Citations
16 Claims
-
1. A hydrogel composition formed by polymerizing a monomer mix comprising monomeric units represented by Formula I:
- ##STR21## wherein;
A is an activated unsaturated group;R and D independently are alkyl, alkylene or haloalkyl groups having 1 to 10 carbon atoms wherein said carbon atoms may include ether linkages therebetween; R1, R2, R3 and R4 are independently selected from;
alkyl or haloalkyl groups wherein ether linkages may be included between carbon atoms;
siloxane groups; and
carbocyclic ring groups having from 6 to 18 carbon atoms;m is an integer from 1 to 500;
n is an integer from 1 to 20;
x and y are 0 or 1;z is 1 or 2;
and x+y+z=3;so long as at least one of R1 or R2 is an alkyl group having from 1 to 10 carbon atoms. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- ##STR21## wherein;
-
10. A contact lens comprising a hydrogel composition formed by polymerizing a monomer mix comprising monomeric units represented by Formula I:
- ##STR24## wherein;
A is an activated unsaturated group;R and D independently are alkyl, alkylene or haloalkyl groups having 1 to 10 carbon atoms wherein said carbon atoms may include ether linkages therebetween; R1, R2, R3 and R4 are independently selected from;
alkyl or haloalkyl groups wherein ether linkages may be included between carbon atoms;
siloxane groups; and
carbocyclic ring groups having from 6 to 18 carbon atoms;m is an integer from 1 to 500;
n is an integer from 1 to 20;
x and y are 0 or 1;z is 1 or 2; and
x+y+z=3;so long as at least one of R1 or R2 is an alkyl group having from 1 to 10 carbon atoms. - View Dependent Claims (11, 13, 14, 15, 16)
- ##STR24## wherein;
-
12. The contact lens of claim 19 wherein the monomeric units represented by Formula I include monomeric units represented by Formula II:
- ##STR25##
Specification