Efficient greener methodology for the preparation of bio-based phase change materials from lipids
摘要:
In the present work, a new, highly efficient and simple strategy has been developed for the synthesis of long chain esters from fatty acids and fatty alcohols as phase change materials. Equivalent amounts of the selected starting compounds were taken to the esterification reaction at 110 degrees C in a solventless medium. In order to catalyze the esterification reaction, non-hygroscopic triphenylphosphine-sulfur trioxide adduct was used (0.83 mmol%) which is an easily accessible compound. The relevant reaction was completed in a very short time (2 h) and under optimized esterification conditions, excellent conversion were reached. The targeted mono ester compounds (15 examples) were obtained in good to excellent yields even after a simple crystallization step (72-99%). Additionally, a catalyst reuse investigation and study covering the scale-up production of stearyl stearate was also carried out. The triphenylphosphine-sulfur trioxide catalyzed solvent free process can compete with existing processes and proved to be a cheaper, practical and environmentally-friendly method for the esterification of fatty acids and alcohols.
Suggested is a cosmetic compositions comprising
(a) a crosspolymer obtained from copolymerisation of at least two different polyols and at least one dicarboxylic acid and
(b) at least one fragrance.
[EN] ESTERS AND ETHERS OF 2,2,4,4-TETRAMETHYLCYCLOBUTANE-1,3-DIOL FOR USE AS AROMA CHEMICALS<br/>[FR] ESTERS ET ÉTHERS DE 2,2,4,4-TÉTRAMÉTHYLCYCLOBUTANE -1,3-DIOL DESTINÉS À ÊTRE UTILISÉS EN TANT QUE PRODUITS CHIMIQUES AROMATIQUES
申请人:BASF SE
公开号:WO2019048544A1
公开(公告)日:2019-03-14
The present invention relates to the use of a compound of the general formula (I) wherein R1 is C1-C4-alkyl or -(C=0)-R3, R2 is hydrogen, C1-C4-alkyl or -(C=0)-R4, and R3 and R4, independently of one another, are selected from the group consisting of hydrogen and C1-C4-alkyl, a stereoisomer thereof or a mixture of stereoisomers thereof, as an aroma chemical, to aroma chemical compositions comprising at least one compound of the general formula (I), a stereoisomer thereof or a mixture of stereoisomers thereof, and to a method for preparing a fragranced ready-to-use composition, which comprises incorporating at least one compound of the general formula (I), a stereoisomer thereof or a mixture of stereoisomers thereof, into a ready- to-use composition. The present invention further relates to specific ethers and specific esters of the compounds of the general formula (I) and a method for their preparation.
An object of the present invention is to provide skin external preparations and cosmetics which contain a branched acyl carnitine and have excellent formulation stability. A skin external preparation of the present invention includes a carnitine derivative represented by the following Formula (1) and/or a carnitine derivative salt represented by the following Formula (2), and an amphoteric surfactant.
In Formula (1), R
1
and R
2
are each independently a C1-18 optionally branched, saturated or unsaturated aliphatic hydrocarbon group. In Formula (2), R
1
and R
2
are the same as in Formula (1), X
−
is a specific anion and Y
+
is a specific cation.
[EN] SUBSTITUTED 4-METHYLENE-TETRAHYDROPYRANS, 4-METHYL-DIHYDROPYRANS AND 4-METHYL-TETRAHYDROPYRANS AND USE THEREOF AS AROMA CHEMICALS<br/>[FR] 4-MÉTHYLÈNE-TÉTRAHYDROPYRANES, 4-MÉTHYL-DIHYDROPYRANES ET 4-MÉTHYL-TÉTRAHYDROPYRANES SUBSTITUÉS ET UTILISATION CORRESPONDANTE EN TANT QUE PRODUITS CHIMIQUES AROMATIQUES
申请人:BASF SE
公开号:WO2021122558A1
公开(公告)日:2021-06-24
The present invention relates to substituted 4-methylene-tetrahydropyrans, 4-methyl- dihydropyrans and 4-methyl-tetrahydropyrans of formula (I), where the variables are as defined in the claims and description, to a stereoisomer thereof, to a mixture of stereoisomers thereof, to a mixture of different di- and tetrahydropyrans (I) and to a mixture containing at least one di- or tetrahydropyran (I) and at least one cyclic acetal which is a 1,3-dioxan carrying in 2-position an isobutanol-2-yl- (derived) substituent and in 4,4- or 5,5-position two methyl substituents. The invention also relates to the use of such compounds as an aroma chemical and/or for modifying and/or enhancing the aroma of a composition, to compositions comprising such compounds, to methods for preparing such compounds and to a product obtainable by these methods.
Cosmetic Compositions Containing Esters of 2-ethylbutanol
申请人:Althaus Stefanie
公开号:US20100292328A1
公开(公告)日:2010-11-18
The invention relates to the use of esters of 2-ethylbutanol with C
4-36
carboxylic acids or C
4-36
dicarboxylic acids in cosmetics and/or pharmaceutical preparations. The compounds are characterised by a particularly light feeling.