GB804081A - Improvements in working up low pressure polyolefines - Google Patents

Improvements in working up low pressure polyolefines

Info

Publication number
GB804081A
GB804081A GB2697556A GB2697556A GB804081A GB 804081 A GB804081 A GB 804081A GB 2697556 A GB2697556 A GB 2697556A GB 2697556 A GB2697556 A GB 2697556A GB 804081 A GB804081 A GB 804081A
Authority
GB
United Kingdom
Prior art keywords
aluminium
ethylene
alkali metal
pressure process
low pressure
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
Application number
GB2697556A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huels AG
Original Assignee
Chemische Werke Huels AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chemische Werke Huels AG filed Critical Chemische Werke Huels AG
Publication of GB804081A publication Critical patent/GB804081A/en
Expired legal-status Critical Current

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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

Polyolefines produced, e.g. from ethylene, propylene or butylene, by the low pressure process are purified (residual catalyst destroyed) by treatment with an aqueous solution of a complex-forming organic carboxylic acid, which may be subsequently removed by washing with water. By the low-pressure process is meant the use of catalysts formed by mixing a compound of a Group IVa, Va or VIa metal with aluminium, an alkali metal, aluminium hydride, or an organic compound of aluminium, magnesium, zinc or an alkali metal, and in examples titanium tetrachloride is mixed with diethyl aluminium chloride in the presence of butane or cyclohexane and ethylene continuously introduced therein. Carboxylic acids specified are oxalic, glycollic, lactic and tartaric acids and potassium tetraoxalate. Optional features disclosed are pretreatment of the polymer with an anhydrous alcohol, and the preferred inclusion during purification of a wetting agent, such as an ethylene oxide/fatty alcohol condensate, an alkyl aryl sulphonate, or, in particular, a phosphoric acid ester of which many are listed.
GB2697556A 1955-10-01 1956-09-04 Improvements in working up low pressure polyolefines Expired GB804081A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC11895A DE1161426B (en) 1955-10-01 1955-10-01 Process for processing low-pressure polyolefins

Publications (1)

Publication Number Publication Date
GB804081A true GB804081A (en) 1958-11-05

Family

ID=7015085

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2697556A Expired GB804081A (en) 1955-10-01 1956-09-04 Improvements in working up low pressure polyolefines

Country Status (3)

Country Link
DE (1) DE1161426B (en)
FR (1) FR1159840A (en)
GB (1) GB804081A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3000871A (en) * 1958-01-17 1961-09-19 Shell Oil Co Method for purifying polyolefin
EP1028128A1 (en) * 1997-10-16 2000-08-16 Teijin Limited Cycloolefin polymer reduced in catalyst residue content, use thereof, and process for producing the same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2978442A (en) * 1957-05-01 1961-04-04 Du Pont Recovery process for polyethylene
BE589068A (en) * 1959-03-25
US3308105A (en) * 1963-01-16 1967-03-07 Nat Distillers Chem Corp Catalyst solubilizing agents

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3000871A (en) * 1958-01-17 1961-09-19 Shell Oil Co Method for purifying polyolefin
EP1028128A1 (en) * 1997-10-16 2000-08-16 Teijin Limited Cycloolefin polymer reduced in catalyst residue content, use thereof, and process for producing the same
EP1028128A4 (en) * 1997-10-16 2001-04-04 Teijin Ltd Cycloolefin polymer reduced in catalyst residue content, use thereof, and process for producing the same
US6388032B1 (en) 1997-10-16 2002-05-14 Teijin Limited Cyclic olefin polymer containing little catalyst residue

Also Published As

Publication number Publication date
FR1159840A (en) 1958-07-02
DE1161426B (en) 1964-01-16

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