Long-chain alkyl esterquats for highly viscous laundry and cleaning formulations

Patent metadata

Field	Value
Publication number	US-11692153-B2
Application number	US-201917257661-A
Country	US
Kind code	B2
Filing date	Jul 1, 2019
Priority date	Jul 5, 2018
Publication date	Jul 4, 2023
Grant date	Jul 4, 2023

Abstract

The invention relates to specific active compositions for producing highly viscous laundry and cleaning formulations, particularly laundry fabric softeners, to a method for the production thereof and to said laundry and cleaning formulations. High viscosity can be achieved in the products according to the invention despite a low concentration of active compositions and without using additional thickeners.

First claim

The invention claimed is:

1. An active composition for producing laundry and cleaning formulations, comprising a mixture of two or more quaternary ammonium salts of the general formula I):

wherein:
R 1 is a linear or branched hydrocarbon radical having an iodine number of from 0 to 5, and comprising 14 to 20 carbon atoms;
R 2 , R 4 are the same or different, each independently selected from divalent, linear hydrocarbon radicals comprising 1 to 4 carbon atoms;
R 3 is hydrogen or an acyl radical of a fatty acid comprising a chain length of 12 to 22 carbon atoms;
R 5 is the same as, or different from, R 3 , and is an acyl radical of a fatty acid comprising a chain length of 12 to 22 carbon atoms;
R 6 is methyl or ethyl;
X − is methylsulfate or ethylsulfate;
wherein:
the amount ratio of the quaternary ammonium salts of the general formula I) in the mixture is a result of one or more amine(s) of the general formula II):

wherein:
R 1 , R 2 and R 4 have the same definition as in formula I), being reacted with one or more fatty acids corresponding to R 3 and R 5 , in the molar ratio of the sum of all amines of the general formula II) to the sum of all fatty acids of from 0.8 to 1.5.

2. The active composition of claim 1 , wherein:
the amount ratio of the quaternary ammonium salts of the general formula I) in the mixture is a result of one or more amine(s) of the general formula II) where R 1 , R 2 and R 4 have the same definition as in formula I), being reacted with one or more fatty acids corresponding to R 3 and R 5 , in the molar ratio of the sum of all amines of the general formula II) to the sum of all fatty acids of from 0.9 to 1.2.

3. The active composition of claim 1 , wherein the active composition is for producing a fabric softener formulation, wherein:
R 1 is a linear or branched hydrocarbon radical having an iodine number of from 0 to 5, and comprising 16 to 18 carbon atoms;
R 2 , R 4 are ethylene;
R 3 is hydrogen or an acyl radical of a fatty acid having a chain length of 16 to 18 carbon atoms;
R 5 is the same as or different from R 3 , and is an acyl radical of a fatty acid having a chain length of 16 to 18 carbon atoms;
R 6 is methyl.

4. The active composition of claim 1 , wherein one or both R 2 and R 4 radicals are ethylene.

5. The active composition of claim 1 , wherein R 3 and R 5 are radicals of the same fatty acid or fatty acid mixture.

6. The active composition of claim 1 , wherein the mixture comprises quaternary ammonium compounds of the general formula I), wherein:
R 3 , R 5 are the same or different, each independently being an acyl radical of a fatty acid having a chain length of 16 to 18 carbon atoms;
R 6 is methyl.

7. The active composition of claim 1 , wherein:
R 3 and R 5 are acyl radicals selected from:
plant or tallow fatty acids, having an iodine number from 0 to 50;
plant or tallow fatty acids having an iodine number of less than or equal to 10.

8. The active composition of claim 1 , wherein:
R 3 and R 5 are acyl radicals selected from:
plant or tallow fatty acids, having an iodine number from 10 to 25;
plant or tallow fatty acids having an iodine number of from 0 to 5.

9. A method for preparing the active composition of claim 1 , comprising:
a) reacting one or more amine(s) of the general formula II),

wherein R 1 , R 2 and R 4 have the same definition as in claim 1 , with one or more fatty acid(s) having a chain length of 12 to 22 carbon atoms, and the molar ratio of the sum of all amines of the general formula II) to the sum of all fatty acids of from 0.8 to 1.5;

b) reacting the amines of step a) with an alkylating agent, selected from the group consisting of: dimethyl sulfate and diethyl sulfate, for preparing quaternary ammonium salts of the formula I).

10. The method of claim 9 , further comprising:
c) diluting the active composition mixture obtained according to step b) with 30-40% by weight, of a water-miscible solvent.

11. The method of claim 9 , and further comprising:
c) diluting the active composition mixture obtained according to step b) with 10-20% by weight, of a water-miscible solvent.

12. The method of claim 9 , and further comprising:
c) diluting the active composition mixture obtained according to step b) with one or more solvents selected from the group consisting of: ethanol; 1-propanol; 2-propanol; 1,2-ethylene glycol; 1,2-propylene glycol; 1,3-propylene glycol; dipropylene glycol; dipropylene glycol; ethylene glycol ether; and propylene glycol ether.

13. The method of claim 9 , wherein R 1 , R 2 and R 4 have the same definition as in claim 1 , with one or more fatty acid(s) having a chain length of 16 to 18 carbon atoms, and wherein the molar ratio of the sum of all amines of the general formula II to the sum of all fatty acids of from 0.9 to 1.2.

14. A laundry and cleaning formulation, comprising an active composition according to claim 1 .

15. The laundry and cleaning formulation of claim 14 , wherein the formulation is a fabric softener formulation.

16. The laundry and cleaning formulation of claim 14 , comprising the active composition in from 1% by weight to 6% by weight, where the percentages by weight refer to the total composition.

17. The laundry and cleaning formulation of claim 14 , comprising the active composition in from 2% by weight to 5% by weight, where the percentages by weight refer to the total composition.

18. The laundry and cleaning formulation of claim 14 , comprising a viscosity of more than 500 mPas, measured using a Brookfield LVT viscometer and a spindle suitable for the viscosity range at a temperature of 25° C. and 30 rev/min.

19. The laundry and cleaning formulation of claim 14 , comprising a viscosity of more than 1000 mPas, measured using a Brookfield LVT viscometer and a spindle suitable for the viscosity range at a temperature of 25° C. and 30 rev/min.

Assignees

• Evonik Operations Gmbh

Inventors

• Neubauer Stefan
• Hildebrand Jens
• Kuppert Dirk

Classifications

• C11D11/0017

  Chemistry & Metallurgy · mapped topic

• C11D1/645

  Mixtures of compounds all of which are cationic · CPC title

• C11D11/0094

  Process for making liquid detergent compositions, e.g. slurries, pastes or gels · CPC title

• C11D3/0015 Primary

  liquid · CPC title

• C11D1/62 Primary

  Quaternary ammonium compounds · CPC title