Cationic end-capped siloxane prepolymer for reduced cross-link density
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Abstract
The present invention relates to hydrophilic dicationic siloxane prepolymers with one polymerizable vinyl moiety instead of two polymerizable vinyl moieties, resulting in contact lenses and/or biomedical devices with reduced cross-link density and modulus without detracting from other properties.
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Citations
23 Claims
- 1. A monomer of formula (I):
- 21. A silicon containing monomer containing an ethylenically unsaturated group and at least two cationic hydrophilic groups.
Specification