Polyamides from dimer and trimer acid esters and methods for their preparation
US6072023A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1998 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | Jul 21, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C235/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Polyamides and process for their preparation comprising either PA1 A) epoxidizing an unsaturated or partially hydrogenated fatty acid glyceride; PA1 B) transesterifying the epoxidized glyceride with a C.sub.1-4 alkanol to obtain epoxidized fatty acid C.sub.1-4 alkyl esters; PA1 C) ring opening and dimerizing the epoxidized fatty acid C.sub.1-4 alkyl esters; and PA1 D) reacting the dimerized fatty acid C.sub.1-4 alkyl esters with a polyamine to obtain a polyamide; or PA1 A) transesterifying an unsaturated or partially hydrogenated glyceride with a C.sub.14 alkanol to obtain olefinically unsaturated fatty acid C.sub.1-4 alkyl esters; PA1 B) epoxidizing the unsaturated fatty acid C.sub.1-4 alkyl esters; PA1 C) ring opening and dimerizing the epoxidized fatty acid C.sub.1-4 alkyl esters; and PA1 D) reacting the dimerized fatty acid C.sub.1-4 alkyl esters with a polyamine to obtain a polyamide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.