Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1978-09-20
1979-10-23
Hamrock, William F.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525342, C08F 812, C08F 828, C08F 800
Patent
active
041721870
ABSTRACT:
An abrasion-resistant coating composition is disclosed which comprises a polyvinyl acetal having a hydroxyl group content, calculated as polyvinyl alcohol, of from 35 to 50 percent by weight and polysilicic acid, the weight ratio of polysilicic acid to polyvinyl acetal being from 2:1 to 4:1.
REFERENCES:
patent: 2404357 (1946-07-01), Bechtold
patent: 2440711 (1948-05-01), Bechtold
patent: 3652379 (1972-03-01), White et al.
patent: 3998991 (1976-12-01), Kaas
Bennett David
Farrington William J.
Hamrock William F.
Monsanto Company
Tarter Stanley M.
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