Hardener for anhydride group-containing polymers
US6107451A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1998 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Oct 21, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2603/66
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A curable composition consisting of at least 2 components (a) and (b), wherein PA1 (a) is a liquid oligomer or polymer having a molecular weight of 200-50,000 and containing dicarboxylic anhydride groups, and PA1 (b) is a compound of formula I ##STR1## wherein A is linear or branched C.sub.2 -C.sub.20 alkylene, C.sub.5 -C.sub.7 cycloalkylene, C.sub.7 -C.sub.10 bicycloalkylene, or C.sub.1 -C.sub.30 alkylene containing one or more than one C.sub.5 -C.sub.7 cycloalkylene group or C.sub.7 -C.sub.30 bicycloalkylene group in the main or side chain, which cycloalkylene and bicycloalkylene groups can be unsubstituted or substituted by one or several C.sub.1 -C.sub.6 alkyl groups, and R.sub.1 and R.sub.2 are independently of each other C.sub.1 -C.sub.18 alkyl, C.sub.4 -C.sub.10 cycloalkyl or C.sub.7 -C.sub.24 -aralkyl, which cycloalkyl and aralkyl groups can be unsubstituted or substituted by one or more than one C.sub.1 -C.sub.6 alkyl group, has a long pot life at room temperature and is suitable for the preparation of moulded articles, primers and insulating layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.