Cationic carbohydrate polymers for fabric care

• US 10,604,723 B2
• Filed: 11/09/2015
• Issued: 03/31/2020
• Est. Priority Date: 11/11/2014
• Status: Active Grant

• Current Assignee: Rohm and Haas Company (Dow, Inc.), Union Carbide Corporation (Dow, Inc.)
• Original Assignee: Rohm and Haas Company (Dow, Inc.)
• Inventors: Eldredge, Josephine, Hayes, John, Partain, III, Emmett M., Shulman, Jan E., Todd, Jennifer J.
• Primary Examiner(s): Ogden, Jr., Necholus
• Application Number:
  US15/523,700
• Publication Number:
  US 20170335242A1
• Time in Patent Office: 1,604 Days
• Field of Search: None
• CPC Class Codes: C07C 211/63 having quaternised nitrogen atoms bound to acyclic carbon atoms
• CPC Class Codes: C08L 1/284 with hydroxylated hydrocarbon radicals
• CPC Class Codes: C11D 3/0021 Dye-stain or dye-transfer inhibiting compositions
• CPC Class Codes: C11D 3/0036 Soil deposition preventing compositions; Antiredeposition agents
• CPC Class Codes: C11D 3/227 with nitrogen-containing groups

Abstract

A fabric care composition comprising a modified carbohydrate polymer having quaternary ammonium groups having at least one C₈-C₂₂ alkyl or alkenyl group. The modified carbohydrate polymer has a weight-average molecular weight of at least 500,000.

Claims

1. A laundry detergent composition comprising at least 40 wt % water;

and a modified carbohydrate polymer having quaternary ammonium groups having at least one C₈-C₂₂ alkyl;

wherein the modified carbohydrate polymer has a weight-average molecular weight of at least 500,000; and

wherein at least 20 wt % of quaternary ammonium groups on said at least one modified carbohydrate polymer have at least one C₈-C₂₂ alkyl;

wherein the modified carbohydrate polymer is of formula (I)

2. The laundry detergent composition of claim 1 in which said modified carbohydrate polymer is a modified cellulose ether.

3. The laundry detergent of claim 2 having from 0.1 to 3 wt % of said modified cellulose ether.

4. The laundry detergent of claim 3 in which said modified cellulose ether has quaternary ammonium groups which have one C₁₀-C₂₂ alkyl group.

5. The laundry detergent of claim 4 in which said modified cellulose ether has a weight-average molecular weight from 700,000 to 2,000,000.

6. The laundry detergent of claim 5 in which said modified cellulose ether is a modified hydroxyethyl cellulose.

7. The laundry detergent of claim 6 having total surfactant content from 5 to 60 wt %.

8. The laundry detergent of claim 7 wherein x is from 0.02 to 0.5.

9. The laundry detergent of claim 8 in which at least 50 wt % of quaternary ammonium groups on said at least one modified hydroxyethyl cellulose have one C₁₀-C₂₂ alkyl group.

10. The laundry detergent of claim 1, wherein the laundry detergent exhibits softening and anti-graying attributes.