Carbamates from glycerine carbonate for pearlization
US9474916B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2014 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Nov 8, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/412
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
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):HNR1R2 (I)wherein R1 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 R2 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.