GB808327A - Improvements in or relating to treatment of viscous solutions of normally solid polymers and polymerization process embodying same - Google Patents
Improvements in or relating to treatment of viscous solutions of normally solid polymers and polymerization process embodying sameInfo
- Publication number
- GB808327A GB808327A GB32482/56A GB3248256A GB808327A GB 808327 A GB808327 A GB 808327A GB 32482/56 A GB32482/56 A GB 32482/56A GB 3248256 A GB3248256 A GB 3248256A GB 808327 A GB808327 A GB 808327A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solid polymer
- solution
- microns
- relating
- treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
A viscous solution of a solid polymer of an olefin in a liquid solvent and containing finely-dispersed metal-containing particles derived from a metal-containing catalyst used in the preparation of the polymer which particles are no longer than about 200 microns in the longest dimension are treated by precipitating between 2 and 15 per cent of the solid polymer, separating the remaining solution and recovering further quantities of solid polymer from this solution. Specified olefins are ethylene, propylene and their mixtures. Catalyst particles whose longest dimension is at least 200 microns may be removed before the precipitating step, e.g. by filtration. The precipitation may be effected by lowering the temperature and/or by addition of anti-solvents, e.g. methanol, ethanol, acetone, methyl ethyl ketone, other ketones, ethyl acetate, amyl acetate and water. Specified catalysts are cobalt molybdate activated alumina promoted with triethyl aluminium and titanium tetrachloride mixed with an aluminium trialkyl. Specifications 721,046, 734,501, 748,634 and 799,392 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US808327XA | 1955-11-10 | 1955-11-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB808327A true GB808327A (en) | 1959-02-04 |
Family
ID=22159896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32482/56A Expired GB808327A (en) | 1955-11-10 | 1956-10-24 | Improvements in or relating to treatment of viscous solutions of normally solid polymers and polymerization process embodying same |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB808327A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004085350A1 (en) * | 2003-03-24 | 2004-10-07 | Exxonmobil Chemical Patents, Inc. | Catalyst fines handling process |
-
1956
- 1956-10-24 GB GB32482/56A patent/GB808327A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004085350A1 (en) * | 2003-03-24 | 2004-10-07 | Exxonmobil Chemical Patents, Inc. | Catalyst fines handling process |
| US7141711B2 (en) | 2003-03-24 | 2006-11-28 | Exxonmobil Chemical Patents Inc. | Catalyst fines handling process |
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