CONSTRUCTION PANEL WITH IMPROVED STRENGTH OF FASTENING Russian patent published in 2019 - IPC C04B28/14 E04B2/04 C04B16/02 C04B14/38 C04B24/24 

FIELD: construction; chemistry.

SUBSTANCE: present invention relates to a gypsum board comprising a gypsum matrix containing wood particles immersed therein in an amount of at least 1 wt. % with respect to gypsum, wherein the gypsum matrix further contains a polymer additive in an amount of at least 1 wt. % with respect to the gypsum, where no support substrate is attached to either side of the gypsum board, and where the polymer additive is selected from a group comprising polyvinyl acetate, a copolymer of polyvinyl acetate with ethylene, polyvinylpyrrolidone cross-linked with polystyrene sulfonate, polyvinyl alcohol, methylcellulose, hydroxyethyl methylcellulose, butadiene-styrene rubber copolymer, ester acrylate rubber, copolymer acrylic rubber, polyester resin, epoxy resin, polymethyl methacrylate, polyacrylic acid, cation-containing starch, ethylated starch, dextrin and mixtures thereof. Invention is developed in dependent claims.

EFFECT: technical result is higher capacity of plate to retain fasteners without using support substrate.

7 cl, 1 tbl, 6 ex