Carbamates from glycerine carbonate for pearlization
View Patent ↗Alkyl and/or alkenyl glycerol carbamate prepared by reacting a carbonate selected from the group consisting of glycerol carbonate, diglycerol carbonate, polyglycerol carbonate and mixtures thereof, with an amine of the general formula (I): HNR 1 R 2 (I) wherein R 1 represents a hydrogen atom or a hydrocarbon group selected from the group consisting of alkyl groups and alkenyl groups having from 1 to 22 carbon atoms and R 2 represents a hydrocarbon group selected from the group consisting of alkyl groups and alkenyl groups having from 4 to 22 carbon atoms, and cyclic alkyl groups having 5 or 6 carbon atoms, are described along with methods for their use as pearlizing agents in surface-active preparations.
1. The pearlizing agent is an isomer mixture of 2,3-dihydroxypropyl dodecylcarbamate of the Formula IIC
and of 1,3-dihydroxypropan-2-yl dodecylcarbamate of the Formula IID
wherein the mean crystal size of the pearlizing agent is about 1 to 200 microns.
2. The pearlizing isomer mixture according to claim 1 , wherein the weight portion of 2,3-dihydroxypropyl dodecylcarbamate (IIC) to 1,3-dihydroxypropan-2-yl dodecylcarbamate (IID) is about 1.1:1 to about 1.8:1.
3. A pearlizing composition comprising a mixture of:
(a) 0.01 to 10% by weight of the pearlizing agent according to claims 1 ;
(b) 3 to 30% by weight of a surfactant,
with the proviso that the quantities add up to 100% by weight with water and optionally other auxiliaries and additives.
4. A pearlizing composition comprising a mixture of:
(a) 0.01 to 10% by weight of the pearlizing agent according to claims 1 ;
(b) 3 to 30% by weight of oil components; and
(c) 3 to 30% by weight of surfactants,
with the proviso that the quantities add up to 100% by weight with water and optionally other auxiliaries and additives.
5. The pearlizing composition of claim 3 , wherein the surfactant comprises sodium lauryl sulfate, sodium laureth sulfate, sodium dodecyl sulfate, sodium cocoyl sulfate, ammonium lauryl sulfate, ammonium laureth sulfate, triethylamine lauryl sulfate, triethylamine laureth sulfate, triethanolamine lauryl sulfate, triethanolamine laureth sulfate, monoethanomine lauryl sulfate, monoethanolamine laureth sulfate, diethanolamine laurylsulfate, diethanolamine laureth sulfate, potassium lauryl sulfate, potassium laureth sulfate, potassium cocoyl sulfate, sodium tetradecyl sulfate, sodium lauryl sarcosinate, sodium dodecyl benzene sulfonate, sodium cocoamphoacetate, disodium cococamphodiacetate, sodium sulfocuccinate, sodium cocoamphoproprionates, sodium lauroamphodiacetates, sodium cocoyl taurates, sodium cocoyl sarcosinate, sodium cocoyl sulfoacetate, sodium cocoyl glutamate, sodium cocoyl glycinates, capryl/capramidopropyl betain, cocamidopropyl betain, coco-betain, lauramidopropyl betain, decyl betain, cetyl betain, myristyl betain, myristamidopropyl betain, oleyl betain, isostearylamidopropyl betain, behenyl betain, behenamidopropyl betain, babassuamidopropyl betaine, shea butter amidopropyl betain, almondamidopropyl betain, coco-sultain, coco-hydroxysultain, lauramidopropyl hydroxysultain, cocamidopropyl hydroxysultain, decyl glucoside, coco glucoside, hexadecyl glucoside, lauryl glucoside, laureth-4, laureth-6, laureth 7, laureth-10, laureth-20, ceteareth-25, or a mixture thereof.
6. A pearlizing composition of claim 3 where the viscosity is in the range of about 2,000-200,000 cps.
7. A method of preparing a pearlizing agent of claim 1 comprising: 1) the addition of a fatty amine with saturated or unsaturated alkyl radical, linear or branched, with 8 to 22 carbons to glycerol carbonate where the molar ratio of the fatty amine to the glycerol carbonate is 0.7-1:3 to 1; 2) heating the reaction mixture to 50-90° C.; and 3) cooling down the reaction to room temperature.