GB1056526A - Process for purifying polyolefins - Google Patents
Process for purifying polyolefinsInfo
- Publication number
- GB1056526A GB1056526A GB1169264A GB1169264A GB1056526A GB 1056526 A GB1056526 A GB 1056526A GB 1169264 A GB1169264 A GB 1169264A GB 1169264 A GB1169264 A GB 1169264A GB 1056526 A GB1056526 A GB 1056526A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heptane
- catalyst
- hydrocarbon
- liquid hydrocarbon
- polymer
- 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)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
Abstract
Polyolefines, obtained by means of a polymerization catalyst consisting of the reaction product of titanium halide and an organo aluminium compound, are purified by suspending the crude polymer containing the catalyst residues in a liquid hydrocarbon and contacting it with oxygen, a free oxygen containing gas or an oxygen donor, in the presence of an aromatic hydrocarbon, ether, amine olefine or nitrogen containing heterocyclic compound, thereby transforming, at least in part, the catalyst residues into compounds which are soluble in the liquid hydrocarbon and which are removed from the polymer by washing with the hydrocarbon. The polyolefine may be polypropylene. The liquid hydrocarbon may be n-heptane which may contain 5-30% of one or more aromatic hydrocarbons, e.g. benzene, and may be technical heptane. The contacting stage may be carried out at 20-100 DEG C. using dry air and the polymer may be washed with n-heptane to remove any aluminium compound not bound to the titanium in the catalyst complex prior to the contacting stage. The catalyst may consit of the reaction product of titanium trichloride and aluminium diethylmonochloride and the polyolefine may be produced by polymerizing the olefine in heptane.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT576663 | 1963-03-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1056526A true GB1056526A (en) | 1967-01-25 |
Family
ID=11120439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1169264A Expired GB1056526A (en) | 1963-03-21 | 1964-03-19 | Process for purifying polyolefins |
Country Status (6)
| Country | Link |
|---|---|
| AT (1) | AT256460B (en) |
| DE (1) | DE1520372A1 (en) |
| ES (1) | ES297756A1 (en) |
| GB (1) | GB1056526A (en) |
| NL (1) | NL141897B (en) |
| SE (1) | SE320192B (en) |
-
1964
- 1964-03-18 ES ES297756A patent/ES297756A1/en not_active Expired
- 1964-03-18 NL NL6402885A patent/NL141897B/en unknown
- 1964-03-19 GB GB1169264A patent/GB1056526A/en not_active Expired
- 1964-03-20 DE DE19641520372 patent/DE1520372A1/en active Pending
- 1964-03-20 SE SE3262/64A patent/SE320192B/xx unknown
- 1964-03-20 AT AT244764A patent/AT256460B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| ES297756A1 (en) | 1964-09-01 |
| AT256460B (en) | 1967-08-25 |
| SE320192B (en) | 1970-02-02 |
| DE1520372A1 (en) | 1972-05-10 |
| NL141897B (en) | 1974-04-16 |
| NL6402885A (en) | 1964-09-22 |
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