COATED BUILDING PANELS AND ARTICLES CONTAINING CALCIUM SULPHATE HEMIHYDRATE Russian patent published in 2013 - IPC C09D5/02 C09D1/00 E04C2/00 B32B13/12 

FIELD: chemistry.

SUBSTANCE: invention relates to finishing interior wall surfaces. The method of finishing an interior wall involves preparing a base for building panels containing gypsum, cement or combinations thereof; applying a coating mixture on the surface of the base, said mixture containing 10-40 wt % latex emulsion binder, 30-80 wt % calcium sulphate hemihydrate, 0.1-2 wt % set inhibiting agent, 0.05-2 % of a polymer having molecular weight less than 6000 Da, said polymer being selected from a group consisting of polymers obtained from monomers such as vinyl acrylates, vinyl acetates, vinyl chlorides, ethylene styrenes, substituted ethylenes, as well as polymers having a polyamide skeleton or carboxylate functional groups, and 10-40 wt % water. The invention also relates to a building panel with said coating.

EFFECT: use of the coating mixture enables to cut the duration of the process of finishing walls, and enables use thereof to make novel building panels and for recoating old walls in need of repair.

10 cl, 3 tbl, 3 ex