GB870326A - Improvements in or relating to the purification of polymers contaminated by metal compounds - Google Patents
Improvements in or relating to the purification of polymers contaminated by metal compoundsInfo
- Publication number
- GB870326A GB870326A GB4371/60A GB437160A GB870326A GB 870326 A GB870326 A GB 870326A GB 4371/60 A GB4371/60 A GB 4371/60A GB 437160 A GB437160 A GB 437160A GB 870326 A GB870326 A GB 870326A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polymer
- water
- acid
- treatment
- oxygen
- 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
- C08F6/00—Post-polymerisation treatments
- C08F6/02—Neutralisation of the polymerisation mass, e.g. killing the catalyst also removal of catalyst residues
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Polymers of unsaturated monomers, e.g. polyethylene or polypropylene, are purified by treating the dry polymer with dry hydrogen chloride, in the presence or absence of organic solvents or diluents and under such conditions that there is a complete or substantially complete absence of liquid water and water vapour, and then with water. The polymer may also be treated with an alcohol, e.g. ethanol or butanol-2, before, during, and/or after the hydrochloric acid treatment, and oxygen or an oxygen-containing gas before or during the hydrochloric acid treatment. After the polymer has been water-washed, it may be treated with a solution of a compound which forms soluble complexes with one or more of the metals, which are to be removed from the polymer. The treatment with the complexing agent may be effected in the presence of a wetting agent and also simultaneously with steamstripping. The impurities removed are metallic catalyst residues formed from "Ziegler-type" catalysts. The washing water may be acid or alkaline. The process may be effected continuously. Complex-forming agents mentioned are oxalic acid, citric acid, tartaric acid, acetylacetone, and sodium hexa metaphosphate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL870326X | 1959-02-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB870326A true GB870326A (en) | 1961-06-14 |
Family
ID=19851178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4371/60A Expired GB870326A (en) | 1959-02-09 | 1960-02-08 | Improvements in or relating to the purification of polymers contaminated by metal compounds |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE587362A (en) |
| GB (1) | GB870326A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1277780A1 (en) * | 2001-07-19 | 2003-01-22 | Bayer Ag | Treatement of polymer solutions after synthesis |
| CN103665219A (en) * | 2012-09-13 | 2014-03-26 | 中国石油化工股份有限公司 | Method for processing polyisoprene solution |
| WO2017003800A1 (en) * | 2015-06-30 | 2017-01-05 | The Procter & Gamble Company | Reclaimed polypropylene composition |
| WO2017003803A1 (en) * | 2015-06-30 | 2017-01-05 | The Procter & Gamble Company | Articles of reclaimed polyethylene compositions |
| WO2017003801A1 (en) * | 2015-06-30 | 2017-01-05 | The Procter & Gamble Company | Reclaimed polyethylene composition |
| WO2017003802A1 (en) * | 2015-06-30 | 2017-01-05 | The Procter & Gamble Company | Articles of reclaimed polypropylene compositions |
-
0
- BE BE587362D patent/BE587362A/xx unknown
-
1960
- 1960-02-08 GB GB4371/60A patent/GB870326A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1277780A1 (en) * | 2001-07-19 | 2003-01-22 | Bayer Ag | Treatement of polymer solutions after synthesis |
| CN103665219A (en) * | 2012-09-13 | 2014-03-26 | 中国石油化工股份有限公司 | Method for processing polyisoprene solution |
| CN103665219B (en) * | 2012-09-13 | 2016-03-30 | 中国石油化工股份有限公司 | A kind for the treatment of process of polyisoprene solution |
| WO2017003800A1 (en) * | 2015-06-30 | 2017-01-05 | The Procter & Gamble Company | Reclaimed polypropylene composition |
| WO2017003803A1 (en) * | 2015-06-30 | 2017-01-05 | The Procter & Gamble Company | Articles of reclaimed polyethylene compositions |
| WO2017003801A1 (en) * | 2015-06-30 | 2017-01-05 | The Procter & Gamble Company | Reclaimed polyethylene composition |
| WO2017003802A1 (en) * | 2015-06-30 | 2017-01-05 | The Procter & Gamble Company | Articles of reclaimed polypropylene compositions |
Also Published As
| Publication number | Publication date |
|---|---|
| BE587362A (en) |
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