Carbamate functional silica compounds and methods of making...

Details Carbamate functional silica compounds and methods of making... Carbamate functional silica compounds and methods of making...

2005-09-29

2011-12-13

Heincer, Liam (Department: 1767)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C528S422000, C528S492000, C423S335000

Reexamination Certificate

active

08076425

ABSTRACT:
Disclosed is a carbamate functional silica, comprising repeating units:wherein R is H or an alkyl group of from 1 to 50 carbon atoms and n is a number from 1 to 100. Also disclosed is a functional silica comprising repeating units:wherein R is an alkyl group of from 1 to 50 carbon atoms, n is from 1 to 100, R1and R2may be the same or different and are at least one of a hydrocarbon group comprising from 1 to 100 carbon atoms with the proviso that at least one of R1and R2is not hydrogen. In one embodiment, R1and R2are hydrogen or the residual of an aminoplast polymer, an alkylating alcohol, or the like. Methods for making the disclosed functional silicas and coating compositions comprising the same are also provided.

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XP-002361083, K.S. Anisia, A. Kumar, 20 Feb. 20, 2004.
XP-001233525, Deeptangshu S. Chaudhary, Aug. 2, 2002.
XP-002361085, English Abstract.

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