Two-component catalyst for ROMP
US5998326A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 1998 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | May 11, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/821
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst system for the ring-opening matathesis polymerization, which consists of at least two components (a) and (b), wherein PA1 (a) is a ruthenium compound of formula I or II EQU RuX.sub.2 (L.sub.1).sub.m (L.sub.2).sub.n (L.sub.3).sub.o (L.sub.4).sub.p (I), EQU ARuX.sub.2 (L.sub.1).sub.r L.sub.2).sub.3 (II), wherein L.sub.1,L.sub.2, L.sub.3 and L.sub.4 are each independently of the other C.sub.1 -C.sub.18 alkylcyanide, C.sub.6 -C.sub.24 - aralkylcyanide, tertiary amine, tertiary phosphine which does not contain any secondary alkyl or cycloalkyl radicals bound to the phosphorus atom, or phosphite, X is halogen, A is arene, m, n, o and p are integers from 0 to 4, where 2.ltoreq.m+n+o+p.ltoreq.4, r and s are integers from 0 to 2, where 1.ltoreq.r+s.ltoreq.2, and PA1 (b) is a tertiary phosphine containing at least one secondary alkyl radical or cycloalkyl radical bound to the phosphorus atom, is particularly suitable for the polymerisation of strained cycloolefins by the RIM process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.