Salts of lewis acid/acid adducts and catalyst activators therefrom
US6727329B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 4, 2002 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Jun 4, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/901
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A compound useful as a cocatalyst or cocatalyst component, especially for use as an addition polymerization catalyst compound, corresponding to the formula: (A*hu +a)b(Z*J*j)−cd, wherein:A* is a proton or a cation of from 1 to 80 atoms, preferably 1 to 60 atoms, not counting hydrogen atoms, said A* having a charge +a;Z* is an anion group of from 1 to 50 atoms, preferably 1 to 30 atoms, not counting hydrogen atoms, further containing two or more Lewis base sites, said Z* being the conjugate base of an inorganic Bronsted acid or a carbonyl- or non-cyclic, imino-group containing organic Bronsted acid;J* independently each occurrence is a Lewis acid of from 1 to 80 atoms, preferably 1 to 60 atoms, not counting hydrogen atoms, 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 1 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.