Polyurethane system using monotertiary-alkyltoluenediamine as a cross linker
US4816543A · kind A · utility
4Cited by
14References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1985 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Aug 23, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2120/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to improved polyurethane systems prepared by reacting an organic polyisocyanate with a hydroxyl containing compound, the improvement comprising utilizing mono tertiary-alkyltoluenediamine where the tertiary-alkyl group is ortho to an amine group as a chain extender or component thereof. The ortho-tertiary-butyltoluenediamine isomer is particular effective for use in reaction injection molding of polyurethanes and can be formulated with polyol as a chain extender mix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.