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 cosmetic and/or pharmaceutical preparation comprising a dialkyl carbonate according to formula (I) in an amount effective to impart consistency in the cosmetic and/or pharmaceutical preparation, wherein: formula (I) is R.sup.1OCOOR.sup.2, R.sup.1 is a 2-propyl-1-heptyl group, and R.sup.2 is a 2-propyl-1-heptyl group; and the preparation is free from silicone compounds and UV light protection factors.

2. The cosmetic and/or pharmaceutical preparation of claim 1, wherein the preparation is in a form selected from the group consisting of hair shampoos, hair lotions, foam baths, shower baths, creams, gels, lotions, alcoholic solutions, aqueous/alcoholic solutions, emulsions, wax compositions, fat compositions, stick preparations, powders, and ointments.

3. The cosmetic and/or pharmaceutical preparation of claim 1, further comprising an auxiliary substance selected from the group consisting of surfactants, oil substances, emulsifiers, pearlescent waxes, consistency agents, thickening agents, over-greasing agents, stabilizers, polymers, fats, waxes, lecithins, phospholipids, biogenic active compounds, antioxidants, deodorants, antiperspirants, antidandruff agents, film-forming agents, swelling agents, insect repellants, self-tanning agents, tyrosine inhibitors, hydrotropic substances, solubilizers, preservatives, perfume oils, dyestuffs, and combinations thereof.

Description

EXAMPLES

Example 1

Preparation of Hexyldecyl Methyl Carbonate

(1) 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.

(2) 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

(3) The following cosmetic recipes were prepared with the hexyldecyl methyl carbonate prepared according to Example 1. All the data are in wt. %.

(4) TABLE-US-00001 Recipe no. Trade name (INCI name) 1 2 DehymulsLE (PEG-30 5.00 4.00 dipolyhydroxystearate) LameformTGI (polyglyceryl-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) Eumulgin VL75 (lauryl 0.00 4.50 0.00 glucoside (and) polyglyceryl-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