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US 10,472,594 B2Granted
Sulfonated copolymers for detergent composition
AssigneeItaconix Corporation
InventorsBo Jiang, Yvon Durant, John Shaw
Life of this patent
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Abstract
The present invention relates to a mixture of sulfonated copolymers for detergent compositions which mixture of copolymers offer chelating capability as well as the ability to remain soluble in aqueous environments.
Claims24
A composition comprising:
- (a) a first copolymer A selected from the following:
- wherein 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 a —CH2—, —CH2CH2—, —CH2CH2CH2—, or —C—(CH3)2 group or an aromatic group or an ester group (—COOCH2—) or an amido group (—CONH—) to thereby provide acrylamide-alkyl sulfonic acid functionality (—CONH—R3—SO3X) where R3 is a —CH2—, —CH2CH2—, —CH2CH2CH2—, —C—(CH3)2, or —C—(CH3)2—CH2— group
- wherein the weight percent of repeat unit “a” in copolymer A is in excess to the weight percent of repeat unit “b” and repeat unit “b” is present at 15 wt. % to 40 wt. %;
- (b) a second copolymer B selected from the following
- wherein R1 and R1′ are a hydrogen or a —CH3, —CH2CH3, —CH2CH2CH3 group and can be the same or different;
- X, Y and Z are either hydrogen or Na+, Li+, K+ and/or NH4+ and can be the same or different;
- R2 is —CH2—, —CH2CH2—, —CH2CH2CH2—, or —C—(CH3)2 or an aromatic group or an ester group (—COOCH2—) or an amido group (—CONH—) to thereby provide acrylamide-alkyl sulfonic acid functionality (—CONH—R3—SO3X) where R3 is —CH2—, —CH2CH2—, —CH2CH2CH2—, —C—(CH3)2, or —C—(CH3)2—CH2—;
- and
- wherein the weight percent of repeat unit “a” in copolymer B is in excess to the weight percent of repeat unit “b” and repeat unit “b” is present at 15 wt. % to 40 wt. %.
8 more elements
A dishwashing detergent formulation comprising:
- (a) 2.0% by wt. to 30.0% by wt. of a first copolymer A selected from the following:
- wherein 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 a —CH2—, —CH2CH2—, —CH2CH2CH2—, or —C—(CH3)2 group or an aromatic group or an ester group (—COOCH2—) or an amido group (—CONH—) to thereby provide acrylamide-alkyl sulfonic acid functionality (—CONH—R3—SO3X) where R3 is a —CH2—, —CH2CH2—, —CH2CH2CH2—, —C—(CH3)2, or —C—(CH3)2—CH2— group;
- wherein the weight percent of repeat unit “a” in copolymer A is in excess to the weight percent of repeat unit “b” and repeat unit “b” is present at 15 wt. % to 40 wt. %;
- (b) 1.0% by wt. to 15.0% by wt. of a second copolymer B selected from the following
- wherein R1 and R1′ are a hydrogen or a —CH3, —CH2CH3, —CH2CH2CH3 group and can be the same or different;
- X, Y and Z are either hydrogen or Na+, Li+, K+ and/or NH4+ and can be the same or different;
- R2 is a —CH2—, —CH2CH2—, —CH2CH2CH2—, or —C—(CH3)2 group or an aromatic group or an ester group (—COOCH2—) or an amido group (—CONH—) to thereby provide acrylamide-alkyl sulfonic acid functionality (—CONH—R3—SO3X) where R3 is a —CH2—, —CH2CH2—, —CH2CH2CH2—, —C—(CH3)2, or —C—(CH3)2—CH2— group;
- wherein the weight percent of repeat unit “a” in copolymer B is in excess to the weight percent of repeat unit “b” and repeat unit “b” is present at 15 wt. % to 40 wt. %;
- wherein copolymer A indicates a binding capacity in the range of 350 mg CaCO3/g copolymer A to 700 mg CaCO3/g copolymer A and a calcium tolerance (turbidity at pH 11 minus turbidity at pH 6) of less than or equal to 100;
- and
- wherein copolymer B indicates a dispersant capacity as indicated by turbidity, as measured by titration of a solution of copolymer B with a calcium chloride solution at a concentration of 2.0 wt % at 10.0 ml per hours over 10 minutes of time at room temperature, wherein said turbidity at 400 seconds is in the range of 0-50 NTU.
10 more elements
Dependencies are inferred from the claim text.