Formulations, their use as or for producing dishwashing detergents and their production

Patent metadata

Field	Value
Publication number	US-9732309-B2
Application number	US-201313870206-A
Country	US
Kind code	B2
Filing date	Apr 25, 2013
Priority date	Apr 25, 2012
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

Formulations comprising
(A) at least one aminocarboxylate selected from methylglycine diacetate (MGDA), iminodisuccinic acid (IDA) and glutamic acid diacetate (GLDA), and salts and derivatives thereof, and (B) at least one alkoxylated alkyleneimine polymer with an average molecular weight M w in the range from 800 to 25 000 g/mol which has a positive charge density of at least 5 meq/g and which has in the range from 2 to at most 80% by weight alkylene oxide side chains, based on total alkoxylated alkyleneimine polymer.

First claim

The invention claimed is:

1. A formulation comprising:
(A) at least one aminocarboxylate selected from the group consisting of methylglycine diacetate (MGDA), iminodisuccinic acid (IDA) and glutamic acid diacetate (GLDA), and salts thereof;
(B) an alkoxylated alkyleneimine polymer with an average molecular weight M w in the range from 800 to 25 000 g/mol which has a positive charge density of at least 5 meq/g and which has in the range from 2 to at most 80% by weight alkylene oxide side chains, based on total alkoxylated alkyleneimine polymer,
wherein the formulation is free from heavy metals.

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

3. The formulation according to claim 1 , wherein (B) is a polyethyleneimine that has been reacted with ethylene oxide or propylene oxide.

4. The formulation according to claim 1 , which has a heavy metal content below 0.05 ppm, based on a solid content of the formulation.

5. The formulation according to claim 1 , wherein at most 30 mol % of the nitrogen atoms of the alkyleneimine polymer have been reacted with propylene oxide.

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

7. The formulation according to claim 1 , which further comprises in the range from 0.1 to 10% by weight of water.

8. The formulation according to claim 1 , wherein a molar ratio of nitrogen atoms to alkylene oxide groups in the alkoxylated alkyleneimine polymer is at most 5.

9. The formulation according to claim 1 , which comprises:
in total in the range from 1 to 50% by weight of the aminocarboxylate,
in total in the range from 0.001 to 2% by weight of the alkoxylated alkyleneimine polymer,
based in each case on a solid content of the formulation.

10. A process of washing dishes or kitchen utensils, comprising contacting the formulation of claim 1 with the dishes or utensils, where washing is carried out with water of hardness from 2 to 25° German hardness.

11. A process of washing an object having at least one surface made of glass, which may be decorated or undecorated, the process comprising contacting the formulation of claim 1 with the object.

12. The process according to claim 10 , wherein the washing is washing using a dishwasher.

13. The process according to claim 10 , wherein the dishes or kitchen utensils are drinking glasses, glass vases or glass vessels for cooking.

14. A process for producing the formulation of claim 1 ,
the process comprising mixing the aminocarboxylate with the alkoxylated alkyleneimine and optionally a further component in one or more steps in the presence of water, and then completely or partially removing the water.

15. The process according to claim 14 , wherein the water is removed by spray-drying or spray-granulation.

16. The formulation according to claim 2 , wherein (B) is a polyethyleneimine that has been reacted with ethylene oxide or propylene oxide.

17. The formulation according to claim 2 , which has a heavy metal content below 0.05 ppm, based on a solid content of the formulation.

18. The formulation according to claim 3 , which has a heavy metal content below 0.05 ppm, based on a solid content of the formulation.

19. The formulation according to claim 1 , comprising methylglycine diacetate.

20. The formulation according to claim 1 , comprising iminodisuccinic acid.

Assignees

• Basf Se

Inventors

• Garcia Marcos Alejandra
• Hueffer Stephan
• Hartmann Markus
• Weber Heike
• Emmeluth Mario

Classifications

• C11D11/02

  Preparation in the form of powder by spray drying · CPC title

• C11D11/0082

  one or more of the detergent ingredients being in a liquefied state, e.g. slurry, paste or melt, and the process resulting in solid detergent particles such as granules, powders or beads · CPC title

• C11D3/3723 Primary

  Polyamines or polyalkyleneimines · CPC title

• C11D3/33

  Amino carboxylic acids · CPC title