IP Library Granted Patent US 7,828,907
Granted Patent B2
US 7,828,907 · App. 11/801,373 · Granted Nov 9, 2010

Detergent component for preventing precipitation of water hardness and providing soil removal properties

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Quick Facts
Patent No.
US 7,828,907
App. No.
11/801,373
Granted
Nov 9, 2010
Kind
B2
Abstract

A cleaning composition for removing soils includes an alkyl vinyl ether-maleic acid copolymer and at least one component selected from the group consisting of sodium carbonate and sodium hydroxide. The composition contains less than about 10% by weight of at least one component selected from the group consisting of phosphorous-containing components and aminocarboxylates.

Claims (11)

1. A method of removing soils from a textile surface and preventing calcium precipitation from the textile surface, the method comprising:

(a) forming a use solution having a pH of between 10 and 12 consisting of an alkyl vinyl ether-maleic acid copolymer, water, and at least one component selected from the group consisting of: sodium carbonate and sodium hydroxide, phosphates, phosphonates, phosphites and aminocarboxylates, wherein the use solution has less than about 100 parts per million phosphates, phosphonates, phosphites and aminocarboxylates;

(b) applying the use solution onto the textile surface for an amount of time sufficient to remove soils from the textile surface and to prevent calcium precipitation onto the textile surface;

(c) washing the textile surface in the use solution; and

(d) rinsing the use solution from the textile surface.

2. The method of claim 1 , wherein the use solution has less than about 10 parts per million of the phosphates, phosphonates, phosphites, and aminocarboxylates.

3. The method of claim 1 , wherein the use solution has less than about 1 parts per million of the phosphates, phosphonates, phosphites, and aminocarboxylates.

4. The method of claim 1 , wherein the use solution has between 5 parts per million and 200 parts per million of the alkyl vinyl ether-maleic acid copolymer.

5. The method of claim 1 , wherein the use solution has between 10 parts per million and 50 parts per million of the alkyl vinyl ether-maleic acid copolymer.

6. The method of claim 1 , wherein the copolymer is methyl vinyl ether-maleic acid copolymer.

7. The method of claim 1 , wherein the use solution has a pH of between 10.5 and 12.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 14, 2021
From: ECOLAB, INC.
To: ECOLAB USA INC.
Reel/Frame 056988/0177 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 12, 2007
From: MIRALLES, ALTONY; BESSE, MICHAEL
To: ECOLAB INC.
Reel/Frame 019547/0904 →