Glycerol polycarbonate polyesters and other polyhydroxylated polymers and copolymers, acetylation method and applications
US7928183B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Dec 22, 2005 |
| Grant date | Apr 19, 2011 |
| Priority date | — |
| Expiry date | Sep 11, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/36
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to polyesters containing at least one partly acylated polyhydroxylated compound belonging the group consisting of glycerol polycarbonates, specific polyglycerols, [(a-hydroxymethyl) oxyethylene/(a-hydroxymethyl)ethylene carbonate] copolymers, [a -hydroxymethyl) oxyethylene/(a-hydroxymethyl)ethylene carbonate] copolymers, and [a -alkyl) oxyethylene/(a-hydroxyalkyl) oxyethylene] copolymers. The invention also relates to methods for acylating, at least partly, the polyhydroxylated compounds. The polyesters of this invention are applicable to the technical fields relating to engine and industrial lubricants, greases, hydraulic fluids, metal deformation and processing lubricants, stripping and mold dressing products, oil prospecting, mines, tunnel borers, cosmetics, detergency, inks, textile coatings and papers, to the field of food products, to the protection of wood as synthesis intermediates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.