Loop reactor with varying diameter for olefin polymerization
US7553916B2 · kind B2 · utility
2Cited by
9References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 16, 2004 |
| Grant date | Jun 30, 2009 |
| Priority date | — |
| Expiry date | Feb 13, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/92
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Process for polymerizing at least one olefinic monomer in a loop reactor at from 20 to 150° C., but below the melting point of the polymer to be formed, and a pressure of from 5 to 100 bar, where the polymer formed is present in a suspension in a liquid or supercritical suspension medium and this suspension is circulated by means of an axial pump, wherein the loop reactor comprises a cyclic reactor tube whose diameter varies by at least 10%, based on the predominant reactor tube diameter, and in which there is at least one widening and narrowing in a region other than that of the axial pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.