Silicone compositions for treating gypsum board

Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...

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428334, 428335, 428336, 428447, 428448, 428449, 428447, 260 292M, 260 334SB, 428537, 428452, 427387, 4273833, 4273741, B32B 516, B32B 1308

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042581028

ABSTRACT:
Gypsum paper is treated with a mixture of a silanol containing organopolysiloxane polymer where the polymer has a viscosity varying from 1,000 to 1,000,000 centipoise at 25.degree. C. and in which there is mixed a liquid suspension of colloidal silica.

REFERENCES:
patent: 2726176 (1955-12-01), Hatcher
patent: 3389042 (1968-06-01), Bieri
patent: 3431143 (1969-03-01), Johnson
patent: 3511699 (1970-05-01), Johnson
patent: 3716399 (1973-02-01), Nitzsche
patent: 3914476 (1975-10-01), Nitzsche
patent: 3933729 (1976-01-01), Letoffe
patent: 4066594 (1978-01-01), Moeller

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