Patent ID: 11866677
Assignee: ITACONIX CORPORATION
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A dishwasher detergent formulation comprising:
(a) a first copolymer A having the following structure:, where R1 is a hydrogen, or a —CH3, —CH2CH3, —CH2CH2CH3 group;
X, Y and Z are either hydrogen or Na+, Li+, K+ and/or NH4+ and can be the same or different;
R2 is an amido group (—CONH—) to provide acrylamide-alkyl sulfonic acid functionality (—CONH—R3—SO3X) wherein R3 is a —CH2—, —CH2CH2—, —CH2—CH2—CH2—, —C—(CH3)2 or —C—(CH3)2—CH2— group;
wherein the weight percent of repeat unit “a” in said copolymer is present at a level of 55.0 wt. % to 79.0 wt. % and the weight percent of repeat unit “b” in said copolymer is present at a level of 45.0 wt. % to 21.0 wt. % and wherein copolymer A has a number average molecular weight (Mn) from 1000 to 4500 grams per mole;
(b) a second polymeric ingredient B selected from one or more of the following:
(1) a homopolymer or copolymer of poly(acrylic acid);
(2) a homopolymer or copolymer of a poly(alkylacrylic acid);
(3) poly(aspartic acid); or
(4) poly(carboxy methyl inulin); and
wherein said dishwasher formulation 3.0% by weight to 12.0% by weight copolymer A and up to and including 0.9% by weight of said second polymeric ingredient B.