Patent ID: 7235288
Filing Date: 2007-06-26
Classification: D04H,Y10T

Abstract:
1. A gypsum board, comprising: a. a gypsum matrix formed from an aqueous acidic gypsum slurry, said gypsum matrix having a bottom and a top and being appointed to be cured to form said gypsum board; b. a first facer sheet placed on said bottom of said gypsum matrix; c. a second facer sheet placed on said top of said gypsum matrix; d. one or more glass fibers placed within said gypsum matrix; e. said aqueous acidic gypsum slurry comprising a monomer mixture composed of a monomer having acidic functionality and a monomer having hydroxyl or amine functionality, said acidic function monomer and hydroxyl or amine functionality monomer being adapted to cross-link to form a cross-linked monomer mixture; and f. a silane based sizing composition coating said glass fibers, said silane based sizing composition interacting with said monomer mixture during said curing of said gypsum board such that said gypsum matrix and said monomer mixture harden into an interpenetrating pseudo polymeric network within a microstructurally identifiable bond region adjacent to said glass fibers within said gypsum matrix, whereby said silane based sizing composition coating and said cross-linked monomer mixture provide increased strength, flexure resistance and nail pull out resistance to said gypsum board.