| abstract |
The invention concerns an antiplaque oral composition comprising an aqueous carrier, a bactericidal agent and a water soluble copolymer (C), said copolymer comprising a backbone (B) derived from an oxyalkylene oligomer or polymer (AO), and several grafts (G) derived from polymerisation of: a water soluble ethylenically unsaturated carboxylic, sulphonic acid monomer (A), or one of its water soluble salts; and a water soluble ester monomer (E) of ethylenically unsaturated carboxylic acid; and of a water soluble ethylenically unsaturated phosphonated or phosphated monomer (P); the respective amounts of monomers (A), (E) and (P) corresponding to 10 to 90 parts of (A)/ 10 to 70 parts of (E)/ 0.1 to 50 parts of (P), for 100 parts of the total of monomers (A), (E) and (P) of the grafts (G), the relative amounts of backbone (B) and of grafts (G) corresponding to a (B)/(G) mass ratio from 10/90 to 80/20; the average mole weight of said copolymer (C) being 50000 to 2000000. |