Polymerization of vinyl aromatic monomers using cyclopentadienyl zirconium catalysts
US4808680A · kind A · utility
19Cited by
2References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 8, 1987 |
| Grant date | Feb 28, 1989 |
| Priority date | — |
| Expiry date | Jun 8, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymers of vinyl aromatic monomers having a high degree of syndiotacticity are prepared by contacting with a catalyst comprising a cyclopentadienyl zirconium (IV) complex and polymethylaluminoxane under polymerization conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.