MULTIPURPOSE DRY CEMENT COMPOSITION Russian patent published in 2002 - IPC

FIELD: manufacture of building materials. SUBSTANCE: multipurpose dry cement composition includes portland cement, sand, ground limestone or dolomite, polyvinyl acetate and method ether of cellulose. It additionally contains superplasticizer based on sodium salts of condensation product of derivatives of aromatic series, or melamine, tartaric acid, condensed microsilica and hardening regulator selected from group including sulfates, or chlorides, or carbonates, or formates, or nitrites of alkali, or alkali-earth metals, or technical modified lignosulfonates, neutralizer air-involving resin, nitrilotrimethyl phosphonic acid, or their mixtures in weight ratio of components: portland cement: sand: superplasticizer: ground limestone or dolomite: methyl ether of cellulose: condensed microsilica: polyvinyl acetate: hardening regulator: tartaric acid equaling 10-70; 1.0-85; 0.05-1.5; 0.5-85; 0.01- 2.5; 0.25-3.5; 0.01-5.0; 0.0001-0.9; 0.01-1. Multipurpose dry cement composition relates to cement compositions used for fixation of ceramic, ceramogranite facing tiles, tiles based on natural stone, plates or blocks from polystyrene, concrete for fixing of welds and butt joints, as well as in form of primer for internal and external work, laying of tightening devices for heated floors. EFFECT: higher strength of hardened adhesive composition. 2 ex