Ring-opening Ziegler olefin polymerization catalysts and polymers therefrom
US5395906A · kind A · utility
4Cited by
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7Claims
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Key dates
| Filing date | Oct 14, 1993 |
| Grant date | Mar 7, 1995 |
| Priority date | — |
| Expiry date | Oct 14, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/49
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The regiospecific (1,2-Me.sub.2 C.sub.5 H.sub.3).sub.2 ZrMe.sup.+ MeB(C.sub.6 F.sub.5).sub.3 - mediated ring-opening polymerization of methylenecyclobutane and its copolymerization with ethylene to polyolefins of microstructure --{CH.sub.2 CH.sub.2 CH.sub.2 C(CH.sub.2)]--.sub.n and {--[CH.sub.2 CHR]--.sub.x [CH.sub.2 CH.sub.2 CH.sub.2 C(CH.sub.2)]--.sub.y }.sub.n, respectively is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.