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GB975685A - Purifying crystalline olefin polymers - Google Patents

Purifying crystalline olefin polymers

Info

Publication number
GB975685A
GB975685A GB2147162A GB2147162A GB975685A GB 975685 A GB975685 A GB 975685A GB 2147162 A GB2147162 A GB 2147162A GB 2147162 A GB2147162 A GB 2147162A GB 975685 A GB975685 A GB 975685A
Authority
GB
United Kingdom
Prior art keywords
polymer
butanol
propanol
iso
olefin polymers
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
GB2147162A
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.)
Montedison SpA
Original Assignee
Montedison SpA
Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA
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 Montedison SpA, Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA filed Critical Montedison SpA
Publication of GB975685A publication Critical patent/GB975685A/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)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

Crystalline olefin polymers are purified by treating the dry polymer substantially free of polymerization solvent at a temperature between 60 DEG and 130 DEG C. with up to 20% by weight with respect to the polymer of an alcohol so as to impregnate but not wet the polymer e.g. by a fluidized bed technique, and then washing the polymer with an aqueous medium. The olefin polymer may be polyethylene, polypropylene, polybutene-1, or polypentene. The polymers may be formed by bulk techniques. Alcohols mentioned are methanol, ethanol, n-propanol, iso-propanol, iso-butanol, sec.-butanol, 2-ethylhexanol, ethylene glycol, and glycerol. The aqueous medium generally contains a surface-active agent such as bis-(2-ethyl-hexyl) sodium sulphosuccinate. A flow diagram is included in the Specification for effecting the process in a continuous manner. Specification 954,078 is referred to.
GB2147162A 1961-06-09 1962-06-04 Purifying crystalline olefin polymers Expired GB975685A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1056661 1961-06-09

Publications (1)

Publication Number Publication Date
GB975685A true GB975685A (en) 1964-11-18

Family

ID=11134224

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2147162A Expired GB975685A (en) 1961-06-09 1962-06-04 Purifying crystalline olefin polymers

Country Status (8)

Country Link
AT (1) AT238944B (en)
BE (1) BE618754A (en)
CH (1) CH422344A (en)
DE (1) DE1300675B (en)
ES (1) ES278112A1 (en)
GB (1) GB975685A (en)
IT (1) IT651955A (en)
NL (1) NL279048A (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE549951A (en) * 1955-08-03
NL211080A (en) * 1955-10-08

Also Published As

Publication number Publication date
DE1300675B (en) 1969-08-07
AT238944B (en) 1965-03-10
ES278112A1 (en) 1963-01-16
NL279048A (en)
IT651955A (en)
CH422344A (en) 1966-10-15
BE618754A (en)

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