Raymond Porter

US Patent:

6489287, Dec 3, 2002

Filed:

Jun 22, 1999

Appl. No.:

09/338304

Inventors:

Francois Gauthier - Verneuil en Halatte, FR
Yves Duccini - Beauvais, FR
David Witiak - Yardley PA
Barry Weinstein - Dresher PA
Raymond Porter - Elkins Park PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

C11D 337

US Classification:

510476, 510361, 510434, 510230, 510533, 510467, 510436, 510228

Abstract:

The invention provides a detergent formulations comprising at least one water soluble polymer, or salt thereof, bearing at least one phosphonate group. Suitable polymers comprise: wherein X is H, Na, K or A; and A is a polymer, copolymer, or water soluble salt thereof, comprising, one or more of the following monomers in polymerized form: carboxylic acids of the formula wherein R is H, OH, C -C alkyl or alkoxy or acetoxy or acetate R is H, C -C alkyl or alkoxy, COOR R is H, Na, K or C -C alkyl; hydroxypropyl acrylate, propyl methacrylate, 2-acrylamido-2-propane sulphonic acid, sodium styrene sulphonate, sodium allylsulphonate, sodium methyl sulphonate, vinyl sulphonic acid, and salts thereof; acrylamide, methacrylamide, tert-butylacrylamide, (meth)acrylonitrile, styrene, vinyl acetate allyloxy-2-hydroxypropyl sulphonate and dialkylacrylamide. Machine dish washing detergents and laundry detergents are also provided which comprise detergent formulations of the present invention.