Use of ceramides as thickeners
AssigneeL'oreal
InventorsMichel Philippe, Didier Semeria, Claude Mahieu, Alain Ribier, deceased
Life of this patent
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Abstract
The use of natural or synthetic ceramides as agents for thickening a medium, particularly a non-aqueous medium, and a thickened medium containing such a thickening agent The medium thus thickened may be used in the cosmetic, pharmaceutical, paint, varnish, lubricant, combustible, and food industries.
Claims23
A method of thickening a medium comprising the step of including in said medium to be thickened an effective amount of at least one compound of formula (I) as an agent for thickening said medium:
- ##STR2## wherein R.sub.1 represents a saturated or unsaturated linear or branched hydrocarbon radical containing 9 to 25 carbon atoms, R.sub.2 represents a saturated or unsaturated linear or branched hydrocarbon radical containing 5 to 29 carbon atoms, and n is 0 or 1.
A process for thickening a medium comprising the steps of:
- solubilizing at least one compound of formula (I):
- ##STR3## wherein R.sub.1 represents a saturated or unsaturated linear or branched hydrocarbon radical containing 9 to 25 carbon atoms, R.sub.2 represents a saturated or unsaturated linear or branched hydrocarbon radical containing 5 to 29 carbon atoms, and n is 0 or 1;
- in a liquid medium to be thickened at a temperature in the range of room temperature to the boiling point of said liquid medium;
- and
- then letting the mixture stand until thickened.
A thickened liquid medium comprising a liquid medium and an amount effective to thicken said medium of at least one compound of formula (I):
- ##STR4## wherein R.sub.1 represents a saturated or unsaturated linear or branched hydrocarbon radical containing 9 to 25 carbon atoms, R.sub.2 represents a saturated or unsaturated linear or branched hydrocarbon radical containing 5 to 29 carbon atoms, and n is 0 or 1.
Dependencies are inferred from the claim text.