Method for producing propylene block copolymer
US10011669B2 · kind B2 · utility
1Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2014 |
| Grant date | Jul 3, 2018 |
| Priority date | — |
| Expiry date | Feb 5, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F297/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for producing a propylene-based block copolymer ensures excellent olefin polymerization activity and activity with respect to hydrogen (hydrogen response) during polymerization, and produces a propylene-based block copolymer that exhibits a high MFR, high stereoregularity, and excellent rigidity. The method includes copolymerizing propylene and an α-olefin in the presence of a catalyst that includes (I) a solid catalyst component that includes titanium, magnesium, a halogen, and a compound represented by R1O—C(═O)—O—Z—OR2, and (II) a compound represented by R3pAlQ3-p, to obtain a propylene-based block copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.