SILICONE PREPOLYMER SOLUTIONS
First Claim
1. A composition comprising:
- a. from about 20% to about 95% content by weight of the composition of a silicone prepolymer having an average silicon content of from about 10% to about 30% by weight of the prepolymer, andb. from about 5% to about 80% content by weight of the composition of a solvent having a structure represented by formula (1s);
R11—
O-G-R13,
(1s)wherein R11 and R13 independently represent hydrogen or an organic radical comprising from 1 to 20 carbon atoms; and
wherein G comprises;
1. at least one group having a structure represented by formula (1s1);
1 Assignment
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Accused Products
Abstract
In one aspect, the invention relates to silicone prepolymer compositions comprising a silicone prepolymer and a solvent. A soluble silicone prepolymer can be provided having increased average silicon content, thereby attaining a desired oxygen permeability. A solvent can be provided with a desired balance between hydrophilicity and hydrophobicity by selection and modification of the solvent molecular structure, resulting in molded polymer films and articles that exhibit minimal or nonexistent eye irritation and exhibit highly transparent products. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.
107 Citations
32 Claims
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1. A composition comprising:
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a. from about 20% to about 95% content by weight of the composition of a silicone prepolymer having an average silicon content of from about 10% to about 30% by weight of the prepolymer, and b. from about 5% to about 80% content by weight of the composition of a solvent having a structure represented by formula (1s);
R11—
O-G-R13,
(1s)wherein R11 and R13 independently represent hydrogen or an organic radical comprising from 1 to 20 carbon atoms; and wherein G comprises; 1. at least one group having a structure represented by formula (1s1); - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A composition comprising:
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a. from about 20% to about 95% content by weight of the composition of a silicone prepolymer having an average silicon content of from about 10% to about 30% by weight of the prepolymer, and b. from about 5% to about 80% content by weight of the composition of a solvent having a structure represented by formula (2s); - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification