Polymerization activators for supported Ziegler-Natta catalysts
US9096729B2 · kind B2 · utility
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22Claims
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Key dates
| Filing date | Jan 14, 2014 |
| Grant date | Aug 4, 2015 |
| Priority date | — |
| Expiry date | Jan 14, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2423/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Processes for producing impact copolymers are provided. Ethylene and at least one copolymer can be polymerized in the presence of one or more catalysts, polypropylene particles, and one or more halocarbon compounds to produce an impact copolymer that includes the polypropylene particles and an ethylene copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.