DIALKYL CARBONATES OF BRANCHED ALCOHOLS AND THEIR USE

Abstract

The disclosure relates to dialkyl carbonates of branched alcohols and their use in cosmetic and/or pharmaceutical compositions. The disclosure more particularly relates to dialkyl carbonates in which the alkyl groups are both 2-propyl-1-heptyl groups.

Claims

1. A dialkyl carbonate of formula (I)
R.sup.1O—CO—OR.sup.2   (I), wherein R.sup.1 is a 2-propyl-1-heptyl group, and R.sup.2 is a 2-propyl-1-heptyl group.

2.-10. (canceled)

11. A cosmetic and/or pharmaceutical preparation comprising at least one dialkyl carbonate of claim 1 in an amount effective to impart consistency in the cosmetic and/or pharmaceutical preparation.

Description

EXAMPLES

Example 1

Preparation of Hexyldecyl Methyl Carbonate

[0041] 1,350 g (15 mol) of dimethyl carbonate were initially introduced into a 4 l stirred apparatus with a dropping funnel with 14 g of sodium methylate (30% strength in methanol) and the mixture was heated up to 80° C. 699 g (1.5 mol) of hexyldecanol were then added dropwise over a period of 2 hours and the mixture was subsequently stirred at 80° C. for a further 9 hours. During this period, the methanol formed was distilled off from the reaction mixture over a distillation attachment. GC evaluation of the crude product gave a composition of: 4% of hexyldecanol, 79% of asymmetric hexyldecyl methyl carbonate and 13% of symmetric di-hexyldecyl carbonate.

[0042] The pH was adjusted to pH 3-4 with 14 g of H.sub.3PO.sub.4 (85% strength) and excess dimethyl carbonate was distilled off. The sodium phosphate which had precipitated out was filtered off with suction and the product was fractionated. The reaction product, hexyldecyl methyl carbonate, is obtained as a colorless oil with a boiling point of 125-125° C. under 0.4 mbar.

Example 2

Formulations with Hexyldecyl Methyl Carbonate

[0043] The following cosmetic recipes were prepared with the hexyldecyl methyl carbonate prepared according to Example 1. All the data are in wt. %.

TABLE-US-00001 Recipe no. Trade name (INCI name) 1 2 Dehymuls ®LE (PEG-30 5.00 4.00 dipolyhydroxystearate) Lameform ®TGI (polyglycery1-3 0.00 2.00 diisostearate) Hexyldecyl methyl carbonate 20.00 20.00 MgSO.sub.4*7H.sub.2O 1.00 1.00 Glycerol 99.5% 5.00 5.00 Formalin soln. 37% strength 0.15 0.15 Dist. water to 100 to 100 Recipe no.: Trade name (INCI name) 3 4 5 Emulgade ® PL 68/50 (cetearyl 4.50 0.00 0.00 glucoside (and) cetearyl alcohol) Emulgin ® VL75 (lauryl 0.00 4.50 0.00 glucoside (and) polyglycery1-2 dipolyhydroxystearate (and) glycerol) Eumulgin ® B2 (ceteareth-20) 0.00 0.00 2.00 Hexyldecyl methyl carbonate 16.00 16.00 16.00 Carbopol ® 980 (carbomer) 0.00 0.30 0.00 Lanette ® O (cetearyl alcohol) 0.00 0.00 5.00 KOH (20% strength) 0.00 0.60 0.00 Glycerol 99.5% 3.00 3.00 3.00 Formalin soln. 37% strength 0.15 0.15 0.15 Dist. water to 100 to 100 to 100