DRY BLEACHING COMPOSITION Russian patent published in 1999 - IPC

FIELD: dry bleaching compositions for washing containing percarbonate as a bleach. SUBSTANCE: dry bleaching composition with percarbonate of alkaline metal contains from 10 to 80% by mass from total mass of bleach composition, percarbonate of alkaline metal, and from 0.1 to 50% by mass from total mass, composition in dry form, and balance up to 100% by mass from total mass, optional ingredients. Composition in dry form contains at least 50% by mass polymer in dry form in accordance with formula (I) , where Y is unsaturated polycarbonate acid, its salts or their mixture; R¹ and R² are end groups of polymer stable to bleaching and alkali; R³ is H, OH or (C₁-C₄) alkyl; M is H, alkaline metal, alkaline-earth metal or substituted ammonium; P is equal from 0 to 2; n is equal at least 10 or its mixtures. EFFECT: increased stability at production and storage. 11 cl, 3 ex