Method for preparing crosslinked polycarbodiimides
US5837801A · kind A · utility
3Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1996 |
| Grant date | Nov 17, 1998 |
| Priority date | — |
| Expiry date | Dec 4, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/524
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The method for preparing a crosslinked polycarbodiimide according to the present invention comprises reacting a polydicarbodiimide compound with a compound, which has in a molecule thereof two or more hydroxy or mercapto groups, in the presence of an alcoholate of an alkali metal or of an alkaline earth metal. The crosslinked polycarbodiimide obtained according to the method is excellent in heat resistance and mechanical properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.