Evonik Degussa Gmbh

Evonik Operations Gmbh

Kurt Seidel

Peter Schwab

Hans-Jürgen Köhle

Hans-Juergen Koehle

Ursula Westerholt

Axel Euler

Hans Henning Wenk

Dirk Kuppert

Ulrike Kottke

Dietmar Träumer

The invention relates to cosmetic formulations comprising specific ester quats based on isopropanolamine or tetrahydroxypropyl ethylenediamine, and to the use of these ester quats in cosmetics.

Formulation comprising ester quats based on isopropanolamine and tetrahydroxypropyl ethylenediamine

In a method for making a tris-(2-hydroxyethyl)-methylammonium methylsulfate fatty acid ester by quaternizing a tris-(2-hydroxyethyl)-amine fatty acid ester with dimethylsulfate the quaternizing is carried out in the presence of a solid acid scavenger. The method can provide a fabric softener active composition, comprising from 65 to 98% by weight of at least one tris-(2-hydroxyethyl)-methylammonium methylsulfate fatty acid ester, the corresponding non-quaternized tris-(2-hydroxyethyl)-amine fatty acid esters in amounts providing a total amine number of the composition of from 2 to less than 7 mg KOH/g, and from 1 to 1500 ppm methanol.

Method for making a tris-(2-hydroxyethyl)-methylammonium methylsulfate fatty acid ester

Cosmetic formulations including specific ester quats based on isopropanolamine are provided, as well as the use of these ester quats in cosmetics.

Formulation comprising ester quats based on isopropanolamine

Reacting at least one tris-(2-hydroxyethyl)-amine fatty acid ester with dimethylsulfate at a molar ratio of dimethylsulfate to amine nitrogen of from 0.79 to 0.94 until the reaction mixture has a total amine number of from 7 to 20 mg KOH/g provides novel fabric softener active compositions with a low content of methanol, comprising from 65 to 98% by weight of tris-(2-hydroxyethyl)-methylammonium methylsulfate fatty acid esters and from 1 to 1500 ppm methanol.

Fabric softener active composition and method for making it

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Jossgrund, Germany

Kurt Seidel