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US 12,691,046 B2Granted
Ester compositions
AssigneeEvonik Operations GmbH
InventorsMatthias Mentel, Tobias Karl Hubert Müller, Jan Marian von Hof, Sunay Karacocuk, Achim Friedrich
Life of this patent
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Abstract
Mixture compositions made of specifically chosen alkyl carboxylates can be used in a process for the preparation of ester compositions. These mixture compositions and ester compositions can be used in cosmetic applications.
Claims22
A mixture composition, comprising:
- a first alkyl carboxylate group of the general formula (Ia)
- general formula (Ia),
- and
- a second alkyl carboxylate group of the general formula (Ib)
- general formula (Ib),
- with
- R1a and R1b are each hydrocarbon acyl radicals exhibiting from 10 to 30 carbon atoms and are saturated or unsaturated, linear or branched, and/or optionally hydroxy-substituted,
- R2a and R2b are each hydrocarbon acyl radicals exhibiting from 12 to 22 carbon atoms and are saturated or unsaturated, linear or branched, and/or optionally hydroxy-substituted,
- with the proviso
- that R2a is different from R2b, and
- that the alkyl carboxylates of the first group and of the second group in total are present in an amount of at least 55% by weight, the percentages by weight referring to all alkyl carboxylates present in the mixture composition,
- wherein the ratio by weight of all alkyl carboxylates of the first group to all alkyl carboxylates of the second group is from 10.0:1.0 to 1.0:1.0;
- and
- said mixture has a melting point of less than 25° C.
11 more elements
The ester composition obtainable by a process comprising:
- A) supplying a first alcohol and a second alcohol, different from the first alcohol, which are independently hydrocarbon alcohols exhibiting from 12 to 22 carbon atoms and are saturated or unsaturated, linear or branched, and/or optionally hydroxy-substituted,
- B) supplying at least one carboxylic acid exhibiting from 10 to 30 carbon atoms and are saturated or unsaturated, linear or branched, and/or optionally hydroxy-substituted,
- C) esterifying the first and second alcohols with the acid, with an ester composition being obtained, and optionally
- D) purifying the ester composition,
- wherein the ratio by weight of the amount of the first alcohol to the amount of the second alcohol is from 85.0:15.0 to 1.0:1.0;
- and
- said mixture has a melting point of less than 25° C.
4 more elements
A process, comprising:
- A) supplying a first alcohol and a second alcohol, different from the first alcohol, which are independently hydrocarbon alcohols exhibiting from 12 to 22 carbon atoms and are saturated or unsaturated, linear or branched, and/or optionally hydroxy-substituted,
- B) supplying at least one carboxylic acid exhibiting from 10 to 30 carbon atoms and are saturated or unsaturated, linear or branched, and/or optionally hydroxy-substituted,
- C) esterifying the first and second alcohols with the acid, with an ester composition being obtained, and optionally
- D) purifying the ester composition,
- wherein the ratio by weight of the amount of the first alcohol to the amount of the second alcohol is from 85.0:15.0 to 1.0:1.0;
- and
- said mixture has a melting point of less than 25° C.
4 more elements
Dependencies are inferred from the claim text.