Equipment for handling spent-aqueous Ziegler type catalyst in the polymerization of olefins
US4137387A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1976 |
| Grant date | Jan 30, 1979 |
| Priority date | — |
| Expiry date | Sep 30, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/0245
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In the polymerization under pressure of liquid olefin to polyolefin using a Ziegler type catalyst in which the reaction mass, comprising a mixture of catalyst and polyolefin dissolved in liquid monomer, is mixed in a mixer with water to kill the catalyst and reaction after which the highly corrosive aqueous solution of Ziegler catalyst is separated from the monomer and dissolved polymer in a settling tank; lining the inner wall of the mixer and/or settling tank and/or any other part of the equipment coming into contact with the aqueous Ziegler catalyst solution with an acid resistant brick lining having an intermediate membrane lining between it and such inner wall and in which the mortar of the brick lining is a carbon-filled furan polymer, in which the membrane is a fiber glass reinforced furan polymer and in which the brick lining is cemented to the membrane and the membrane is cemented to the inner wall by a carbon-filled furan polymer adhesive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.