Formulation comprising liquid ester quats and/or imidazolinium salts and polymer thickeners

1. A formulation comprising:

A) at least one liquid ester quat, and

B) at least one polymer thickener, wherein the liquid ester quat comprises at least one compound of general formula I)

where R 1 is an acyl residue of an at least monounsaturated fatty acid having a chain length of 18 to 24 carbon atoms or the acyl residue of isostearic acid or ricinoleic acid,

where R 2 is an alkyl residue having 1 to 6 carbon atoms,

where a=1 to 3 and b=1 to 3,

with the proviso that a+b=4.

2. The formulation according to claim 1 , further comprising:

at least one compound of general formula Ia)

where R 1a is an acyl residue of a carboxylic acid different from the carboxylic acid defined for R 1 , wherein R 1 is an acyl residue of an at least monounsaturated fatty acid having a chain length of 18 to 24 carbon atoms or the acyl residue of isostearic acid or ricinoleic acid, and

where R 2b is an alkyl residue having 1 to 6 carbon atoms,

where c=1 to 3 and d=1 to 3

with the proviso that c+d=4.

3. The formulation according to claim 1 , further comprising a liquid imidazolinium salt, wherein the liquid imidazolinium salt is selected from the group consisting of 1-alkylamidoimidazolinium and 1-alkoxyalkylimidazolinium salts of general formulae (II) and (III)

where

R 3 is an optionally branched, optionally unsaturated alkyl residue having 1 to 30 carbon atoms optionally interrupted by oxygen atoms,

R 4 are each independently hydrogen or alkyl,

R 5 is a divalent, saturated or unsaturated, straight-chain, branched or cyclic, optionally substituted hydrocarbon residue and optionally interrupted by oxygen atoms, nitrogen atoms or carboxyl groups,

R 6 is hydrogen or an optionally branched, optionally unsaturated alkyl residue, optionally comprising oxygen atoms or nitrogen atoms, having 1 to 30 carbon atoms, and

A is a counterion to the positive charges on the quaternary nitrogen groups.

4. The formulation according to claim 1 , wherein component A) is present in an amount of 0.1 to 7% by weight, wherein the percentages by weight refer to the overall formulation.

5. The formulation according to claim 1 , wherein the polymer thickener is selected from the group consisting of natural thickeners, modified natural products, and fully synthetic polymers, thickeners based on silicates or modified aluminas or derivatives thereof and cationic/cationized polymers.

6. The formulation according to claim 1 , wherein the polymer thickener is selected from the group consisting of polyacrylate-based thickeners.

7. The formulation according to claim 1 , wherein component B) is present in an amount of 0.005% by weight to 2% by weight, based on the overall formulation.

8. The formulation according to claim 1 , wherein the formulation is an emulsion.

9. The formulation according to claim 1 , further comprising:

C) at least one fatty alcohol.

10. The formulation according to claim 9 , wherein the fatty alcohol is selected from the group consisting of octanol, decanol, lauryl alcohol, isolauryl alcohol, anteisolauryl alcohol, myristyl alcohol, isomyristyl alcohol, cetyl alcohol, palmoleyl alcohol, stearyl alcohol, isostearyl alcohol, anteisostearyl alcohol, eicosanol, petroselinyl alcohol, Guerbet alcohol, arachyl alcohol, gadoleyl alcohol, behenyl alcohol, erucyl alcohol, hectacosanol, octacosanol, melissyl alcohol, and mixtures thereof.

11. The formulation according to claim 9 , wherein component C) is present in an amount of 0.5 to 20% by weight, based on the overall formulation.

12. The formulation according to claim 9 , further comprising:

D) at least one emulsifier.

13. The formulation according to claim 12 , wherein

component A) is present in an amount of 0.1 to 7% by weight,

component B) is present in an amount of 0.005% by weight to 2% by weight,

component C) is present in an amount of 0.5 to 20% by weight, and

component D) is present in an amount of 0.1 to 10% by weight,

based in each case on the overall formulation.