Production of isotactic and regiorandom polypropylene based polymer and block copolymers
US7560523B2 · kind B2 · utility
18Cited by
7References
4Claims
0Family size
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Key dates
| Filing date | Aug 23, 2006 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Aug 23, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F110/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
One step ortho-alkylation of anilines with styrenes to give chiral anilines is obtained using a strong acid catalyst, e.g. CF3SO3H. Condensation of the product to give ligand and metallation gives complex which catalyzes polymerization of propylene to give isotactic propylene or regiorandom propylene of low PDI or blocks thereof, depending on polymerization temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.