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US 5,401,579 AGranted
Siloxane organic hybrid polymers
AssigneePPG Industries, Inc.
InventorsJohn D. Basil, Chia-Cheng Lin, Robert M. Hunia
Life of this patent
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Abstract
Siloxane organic hybrid polymers and a method of making them by condensation polymerization reaction of organoalkoxysilane in the presence of organic film-forming polymers are disclosed.
Claims6
An abrasion resistant coated plastic transparency comprising:
- a. a rigid transparent plastic substrate;
- and
- b. a siloxane organic hybrid polymer coating formed from an organoalkoxysilane or a mixture of organoalkoxysilanes of the general formula R.sub.x Si(OR').sub.4-x wherein R is an organic radical selected from the group consisting of alkyl and acrylic-functional groups, R' is an alkyl group selected from the group consisting of methyl, ethyl, propyl and butyl, and x is at least one and less than 4, and polyvinylpyrrolidone.
Dependencies are inferred from the claim text.