Lightweight joint compound having improved paintability

Details Lightweight joint compound having improved paintability Lightweight joint compound having improved paintability

C - Chemistry, Metallurgy

04

B

400/1305

C04B 11/02 (2006.01) C04B 14/00 (2006.01) C04B 14/06 (2006.01) C04B 14/18 (2006.01) C04B 14/20 (2006.01) C04B 14/28 (2006.01) C04B 24/00 (2006.01) C04B 26/04 (2006.01) C04B 28/14 (2006.01) C04B 28/18 (2006.01) C09D 5/34 (2006.01)

Patent

CA 1326310

LIGHTWEIGHT JOINT COMPOUND HAVING IMPROVED PAINTABILITY Abstract of the Disclosure Expanded perlite coated with a composition to render the perlite impervious to water, and a joint compound incorporating the same. The perlite is ground prior to expansion to provide subsequently expanded perlite having a mean particle size from about from about 50 to about 70 microns, the joint compound formed from the perlite having greater uniformity in paint gloss appearance be- tween the painted surface of the joint compound and the painted surface of the gypsum wallboard on which the joint compound is applied.

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