Method for the preparation of rigid cast or transfer molded thermoset polyurethane modified polyisocyanurate compositions
US4800058A · kind A · utility
6Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 24, 1987 |
| Grant date | Jan 24, 1989 |
| Priority date | — |
| Expiry date | Aug 24, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/2063
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for the preparation of cast or transfer molded rigid polyurethane modified polyisocyanurate polymer composition by conveying from a mixing chamber into a mold cavity of desired configuration to react at temperatures of from about ambient to about 140.degree. C. a reaction mixture of an organic di- or polyisocyanate, a cyclic alkylene carbonate and a polyether polyol, in the presence of a soluble adduct of a tertiary amine and a cyclic alkylene cabonate as a catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.