GB1016769A - Removal of catalyst from macromolecular homo-polymers and co-polymers - Google Patents
Removal of catalyst from macromolecular homo-polymers and co-polymersInfo
- Publication number
- GB1016769A GB1016769A GB3802662A GB3802662A GB1016769A GB 1016769 A GB1016769 A GB 1016769A GB 3802662 A GB3802662 A GB 3802662A GB 3802662 A GB3802662 A GB 3802662A GB 1016769 A GB1016769 A GB 1016769A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- solution
- polymer
- polymers
- catalyst
- 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)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Metallic catalyst residues are removed from a solution of a homo- or co-polymer in an organic solvent by mixing said solution with an aqueous solution of an acid having a concentration of at least 15% by weight, then adding water and finally separating the aqueous acid phase containing catalyst material, from the polymer solution. The mixing of the polymer solution with the concentrated acid is preferably carried out in the presence of a small amount of dispersing agent, e.g. glycerol monostearate, an alkylphenyl polyglycol ether or an alkyl phenol polyglycol ether. Any acid that dissolves the catalyst may be used, e.g. nitric, hydrochloric, sulphuric, formic, acetic and chloroacetic acids may be used, and the amount added is preferably 1 to 20% by weight based on the amount of polymer dissolved. Preferably nitric acid is used, the concentration of the acid being 20 to 40% by weight, and the polymer solution is preferably kept at 40 DEG to 65 DEG C. during mixing. In the examples, ethylene-propylene copolymers in gasoline are purified.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL270195 | 1961-10-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1016769A true GB1016769A (en) | 1966-01-12 |
Family
ID=19753339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3802662A Expired GB1016769A (en) | 1961-10-12 | 1962-10-08 | Removal of catalyst from macromolecular homo-polymers and co-polymers |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE623482A (en) |
| GB (1) | GB1016769A (en) |
| NL (1) | NL270195A (en) |
-
0
- BE BE623482D patent/BE623482A/xx unknown
- NL NL270195D patent/NL270195A/xx unknown
-
1962
- 1962-10-08 GB GB3802662A patent/GB1016769A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL270195A (en) | |
| BE623482A (en) |
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