Formulations, the production and use thereof, and suitable components

Patent metadata

Field	Value
Publication number	US-10844323-B2
Application number	US-201716096841-A
Country	US
Kind code	B2
Filing date	Apr 18, 2017
Priority date	Apr 27, 2016
Publication date	Nov 24, 2020
Grant date	Nov 24, 2020

Abstract

Described herein is a formulation including
(A) citric acid or an alkali metal salt of citric acid, (B) at least one graft copolymer formed from
(a) at least one graft base selected from nonionic monosaccharides, disaccharides, oligosaccharides and polysaccharides, and side chains, obtainable by grafting of (b) at least one ethylenically unsaturated mono- or dicarboxylic acid and (c) at least one compound of the general formula (I)

where the variables are defined as follows:
R 1 is selected from methyl and hydrogen,
A 1 is selected from C 2 -C 4 -alkylene,
R 2 are the same or different and are selected from C 1 -C 1 -alkyl,
X − is selected from halide, mono-C 1 -C 4 -alkylsulfate and sulfate,
(C) a total of zero to 0.5% by weight of methylglycinediacetic acid (MGDA) and glutaminediacetic acid (GLDA) and alkali metal salts of MGDA and GLDA.

First claim

The invention claimed is:

1. A formulation comprising
(A) citric acid or an alkali metal salt of citric acid,
(B) at least one graft copolymer formed from
(a) at least one graft base selected from nonionic monosaccharides, disaccharides, oligosaccharides and polysaccharides, and side chains, obtainable by grafting of
(b) at least one ethylenically unsaturated mono- or dicarboxylic acid and
(c) at least one compound of the general formula (I)

wherein the variables are defined as follows:
R 1 is selected from methyl and hydrogen,
A 1 is selected from C 2 -C 4 -alkylene,
R 2 are the same or different and are selected from C 1 -C 4 -alkyl,
X − is selected from halide, mono-C 1 -C 4 -alkylsulfate and sulfate, and
(C) a total of zero to 0.5% by weight of methylglycinediacetic acid (MGDA) and glutaminediacetic acid (GLDA) and alkali metal salts of MGDA and GLDA.

2. The formulation according to claim 1 , which is free of phosphates and polyphosphates.

3. The formulation according to claim 1 , wherein compound (c) is selected from ω-trimethylaminoethyl(meth)acrylatochloride.

4. The formulation according to claim 1 , wherein compound (A) is selected from the trisodium salt of citric acid.

5. The formulation according to claim 1 , which is solid at room temperature.

6. The formulation according to claim 1 , further comprising at least one inorganic peroxide compound (D).

7. The formulation according to claim 1 , further comprising at least one polymeric builder (E).

8. The formulation according to claim 1 , comprising:
a total of 1% to 50% by weight of compound (A),
a total of 0.1% to 4% by weight of graft copolymer (B),
based on the solids content of the formulation.

9. A method for washing dishware and kitchen utensils, the method comprising using the formulation according to claim 1 for washing the dishware and the kitchen utensils.

10. A method for washing articles having at least one glass surface which has been decorated or is undecorated, the method comprising using the formulation according to claim 1 for washing the articles.

11. The method according to claim 9 , wherein the washing is effected with a machine dishwasher.

12. A process for producing the formulation according to claim 1 , comprising mixing at least one compound (A) and at least one graft copolymer (B) and optionally one or more further ingredients (F) and optionally peroxide (D) or chlorine bleach (D) with one another in one or more steps, optionally in the presence of water, and then optionally wholly or partially removing water.

13. The process according to claim 12 , wherein the water is removed by spray drying.

14. The method according to claim 10 , wherein the washing is effected with a machine dishwasher.

Assignees

• Basf Se

Inventors

• Weber Heike
• Tuerk Holger
• Tuerkoglu Gazi

Classifications

• C11D3/37

  Polymers {(polymeric surface-active agents C11D1/008; polysaccharides C11D3/222)} · CPC title

• C07C229/16

  to carbon atoms of hydrocarbon radicals substituted by amino or carboxyl groups, e.g. ethylenediamine-tetra-acetic acid, iminodiacetic acids · CPC title

• C11D1/04

  Carboxylic acids or salts thereof (soap C11D9/00) · CPC title

• C11D3/2086 Primary

  Hydroxy carboxylic acids-salts thereof · CPC title

• C11D3/3942

  Inorganic per-compounds (C11D3/3902 takes precedence) · CPC title