Methods for controlling ethylene copolymer properties
US8809473B2 · kind B2 · utility
1Cited by
41References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2011 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Jun 7, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2420/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for altering the polymer architecture of ethylene copolymers made with a supported phosphinimine polymerization catalyst. The method involves changing the amount of a catalyst modifier added to a reactor separately from or together with a supported phosphinimine polymerization catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.