Polymerization of olefins
US6444763B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2000 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Mar 2, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A particulate phyllosilicate mixture comprising a mixture containing a phyllosilicte belonging to the smectite group and a phyllosilicate belonging to the mica group, the phyllosilicate particle having a content of the phyllosilicate belonging to the smectite group of 0.1 to 50% by weight and optionally satisfying the following requirements (a) to (c):(a): the average particle diameter is 20 to 1000 &mgr;m with not more than 20% of the total number of particles being accounted for by particles having a particle diameter of not more than 10 &mgr;m;(b): the crushing strength of the particle is not less than 0.5 MPa as measured with a microcompression tester and(c): the bulk density of the particle of not less than 0.6 g/cm3.Polymerization of olefins with catalyst comprising the particulate phyllosilicate mixture as a carrier or support for the catalysts is also disclosed
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.