| abstract |
A novel silane polymer has at least some repeating elements of the formulae: n n n or n wherein R 13 is selected from hydrogen, lower alkyl group, benzyl, and phenyl group; n R 14 and R 15 are independently alkylene groups of 1 to 6 carbon atoms, xylylene, and phenylene groups of 6 to 12 carbon atoms, and; n m and n are integers independently selected from 1 through 6. n These polymers are useful as abrasion resistant coatings, especially for ophthalmic lenses. |