Silicone-containing macromonomers and low water materials
First Claim
Patent Images
1. A low water polymeric silicone composition which is the polymerization product of a mixture comprising:
- (A) a macromonomer of the general Formula (I);
space="preserve" listing-type="equation">(X)(E).sub.n (I) wherein;
X is derived from a copolymer prepared by reacting the following components;
(a) at least 50 mole % of an ethylenically unsaturated silicon-containing monomer,(b) 2.5 to 20 mole % of an ethylenically unsaturated monomer containing a hydroxyl, amino or carboxylic acid radical,(c) 0 to 15 mole % of an ethylenically unsaturated monomer other than monomers (a) or (b),(d) 2.5 to 20 mole % of a chain transfer agent, and the mole percent of components (a), (b), (c) and (d) being based on the total amount of said components;
E is a polymerizable, ethylenically unsaturated radical;
n is at least 2; and
(B) an ethylenically unsaturated silicone-containing monomer other than the macromonomer of Formula (I).
13 Assignments
0 Petitions
Accused Products
Abstract
Low water siloxane macromonomer are disclosed. This macromonomer can be copolymerized with unsaturated silicone containing monomers to prepare polymeric materials useful as biomedical devices. These macromonomers are particularly suited for soft contact lens applications.
262 Citations
26 Claims
-
1. A low water polymeric silicone composition which is the polymerization product of a mixture comprising:
-
(A) a macromonomer of the general Formula (I);
space="preserve" listing-type="equation">(X)(E).sub.n (I)wherein; X is derived from a copolymer prepared by reacting the following components; (a) at least 50 mole % of an ethylenically unsaturated silicon-containing monomer, (b) 2.5 to 20 mole % of an ethylenically unsaturated monomer containing a hydroxyl, amino or carboxylic acid radical, (c) 0 to 15 mole % of an ethylenically unsaturated monomer other than monomers (a) or (b), (d) 2.5 to 20 mole % of a chain transfer agent, and the mole percent of components (a), (b), (c) and (d) being based on the total amount of said components; E is a polymerizable, ethylenically unsaturated radical; n is at least 2; and (B) an ethylenically unsaturated silicone-containing monomer other than the macromonomer of Formula (I). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
-
-
12. A medical device formed from a low water composition which is the polymerization product of a mixture comprising:
- (A) a macromonomer of the general Formula (I);
space="preserve" listing-type="equation">(X)(E).sub.n (I)wherein; X is derived from a copolymer prepared by reacting the following components; (a) at least 50 mole % of an ethylenically unsaturated silicon-containing monomer, (b) 2.5 to 20 mole % of an ethylenically unsaturated monomer containing a hydroxyl, amino or carboxylic acid radical, (c) 0 to 15 mole % of an ethylenically unsaturated monomer other than monomers (a) or (b), (d) 2.5 to 20 mole % of a chain transfer agent, and the mole percent of components (a), (b), (c) and (d) being based on the total amount of said components; E is a polymerizable, ethylenically unsaturated radical; n is at least 2; and (B) an ethylenically unsaturated silicone-containing monomer other than the macromonomer of Formula (I).
- (A) a macromonomer of the general Formula (I);
-
26. A macromonomer useful in the preparation of a low water polymeric silicone composition consisting of the following Formula (Ia):
-
space="preserve" listing-type="equation">(X)(E).sub.n (Ia)wherein; X is derived from a copolymer prepared by reacting the following components; (a) at least 80 mole % of an ethylenically unsaturated silicon-containing monomer, (b) 2.5 to 20 mole % of an ethylenically unsaturated monomer containing an active hydrogen atom, (c) 0 to 15 mole % of an ethylenically unsaturated monomer other than monomers (a) or (b), and (d) 2.5 to 20 mole % of a chain transfer agent, the weight percent of components (a), (b), (c) and (d) being based on the total amount of said components; E is a polymerizable, ethylenically unsaturated radical; and n is at least 2; wherein the low water polymeric silicone composition when cured absorbs maximumly 5% or less of water base on the total weight of the polymeric silicone and water.
-
Specification