Catalyst system for injection molding polyurethanes
US3931387A · kind A · utility
5Cited by
17References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 17, 1973 |
| Grant date | Jan 6, 1976 |
| Priority date | — |
| Expiry date | Apr 17, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyurethane catalyst system is disclosed which comprises: PA1 A. at least one basic amine catalyst for the polyurethane reaction having a catalytic activity about equal to or greater than triethylenediamine; PA1 B. at least one organometallic catalyst for the polyurethane reaction; and PA1 C. at least one basic amine catalyst for the polyurethane reaction having a catalytic activity less than that of (a) and (b) together present in the catalyst system in an amount by weight about equal to or greater than the combined weight of catalysts (a) and (b).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.