Detergents containing graft copolymers of polyalkylene oxides and vinyl acetate as antiredeposition inhibitors
AssigneeBASF SE
InventorsAlexander Kud, Guenther Schulz, Wolfgang Trieselt, Heinrich Hartmann
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Abstract
Detergents contain added graft copolymers which have an antiredeposition action and are obtainable by grafting polyalkylene oxides having a number average molecular weight of from 2000 to 100,000 with vinyl acetate in a weight ratio of from 1:0.2 to 1:10, and up to 15% of whose acetate groups may be hydrolyzed.
Claims15
A detergent comprising surfactants, builders, bleaches and conventional additives, which contains, as an added soil antiredeposition agent, from 0.1 to 3% by weight of a graft copolymer which is obtainable by grafting (a) a polyalkylene oxide having a number average molecular weight of from 2000 to 100,000 and based on ethylene oxide, propylene oxide and/or butylene oxide with (b) vinyl acetate in a weight ratio (a):(b) of from 1:0.2 to 1:10.
A detergent comprising as an added soil antiredeposition agent, from 0.1 to 3% by weight of a graft copolymer which is obtainable by grafting (a) a polyalkylene oxide having a number average molecular weight of from 2000 to 100,000 and based on ethylene oxide, propylene oxide and/or butylene oxide with (b) vinyl acetate in a weight ratio (a):(b) of from 1:0.2 to 1:10.
A process for soil antiredeposition during washing with detergents having a reduced phosphate content of less than 25% by weight of sodium triphosphate, which comprises using as a soil antiredeposition agent a graft copolymer which is obtainable by grafting (a) a polyalkylene oxide having a number average molecular weight of from 2,000 to 100,000 and based on ethylene oxide, propylene oxide and/or butylene oxide with (b) vinyl acetate in a weight ratio (a):(b) of from 1:0.2 to 1:10.
Dependencies are inferred from the claim text.