Catalyst activators comprising expanded anions
US6462156B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 13, 2002 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Mar 13, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Catalyst compositions comprising a group 4 metal complex and an activator corresponding to the formula:(A*+a)b(Z*J*j)−cd,wherein:A* is a cation of charge +a, selected from the group consisting of ammonium-, sulfonium-, phosphonium-, oxonium-, carbonium-, silylium-, ferrocenium-, Ag+, and Pb+2;Z* is an anion group of from 1 to 50 atoms, not counting hydrogen atoms, further containing two or more Lewis base sites as defined in the claims;J* independently each occurrence is a Lewis acid coordinated to at least one Lewis base site of Z*, and optionally two or more such J* groups may be joined together in a moiety having multiple Lewis acidic functionality,j is a number from 2 to 12 anda, b, c, and d are integers from 1 to 3, with the proviso that a×b is equal to c×d.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.