Silicone-Containing Prepolymers
First Claim
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1. A prepolymer comprising at least one block of Formula II and terminated with a polymerizable ethylenically unsaturated radical:
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Abstract
Prepolymers comprising at least one block of Formula II and terminated with a polymerizable ethylenically unsaturated radical are useful in hydrogel materials are disclosed:
wherein n, R, R1, R2 and X+ are as defined herein.
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Citations
53 Claims
- 1. A prepolymer comprising at least one block of Formula II and terminated with a polymerizable ethylenically unsaturated radical:
- 38. A prepolymer of Formula IV:
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53. A cationic silicone hydrogel having a water content of about 30 to about 60 weight percent and an oxygen permeability of at least about 80 barrers.
Specification