Method for the preparation of rigid reaction injection molded thermoset polyurethane modified polyisocyanurate compositions
US4731427A · kind A · utility
28Cited by
1References
12Claims
0Family size
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Inventor
Key dates
| Filing date | Apr 1, 1987 |
| Grant date | Mar 15, 1988 |
| Priority date | — |
| Expiry date | Apr 1, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2120/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for the preparation of a molded reaction injection molded rigid polyurethane modified polyisocyanurate polymer composition by injecting at least two streams into the mold cavity of a RIM machine to react at temperatures of from about ambient to about 140.degree. C. a reaction mixture comprising at least one stream of an organic di- or polyisocyanate and a second stream of a cyclic alkylene carbonate, a polyether polyol and a soluble adduct of a tertiary amine and a cyclic alkylene carbonate as catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.