GB824278A - Improvements in method for purifying polymers - Google Patents

Improvements in method for purifying polymers

Info

Publication number
GB824278A
GB824278A GB2153/56A GB215356A GB824278A GB 824278 A GB824278 A GB 824278A GB 2153/56 A GB2153/56 A GB 2153/56A GB 215356 A GB215356 A GB 215356A GB 824278 A GB824278 A GB 824278A
Authority
GB
United Kingdom
Prior art keywords
temperature
polymer
filtration
purifying polymers
trimethylpentane
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
GB2153/56A
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.)
Phillips Petroleum Co
Original Assignee
Phillips Petroleum Co
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 Phillips Petroleum Co filed Critical Phillips Petroleum Co
Publication of GB824278A publication Critical patent/GB824278A/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
    • C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond

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

A high density olefin polymer such as is obtained using a chromium oxide type catalyst, e.g. as described in Specifications 790,195 and 804,641, is purified by filtration of a hydrocarbon solution of the polymer at a temperature between the upper and lower cloud points, i.e. at a temperature at which the polymer and solvent are in a homogeneous phase. The examples illustrate the filtration of solutions of polyethylene in trimethylpentane, cyclohexane and methylcyclohexane and it is said that the temperature used may be between 175 DEG and 375 DEG F.
GB2153/56A 1955-02-21 1956-01-23 Improvements in method for purifying polymers Expired GB824278A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US345155XA 1955-02-21 1955-02-21

Publications (1)

Publication Number Publication Date
GB824278A true GB824278A (en) 1959-11-25

Family

ID=21876896

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2153/56A Expired GB824278A (en) 1955-02-21 1956-01-23 Improvements in method for purifying polymers

Country Status (5)

Country Link
CH (1) CH345155A (en)
DE (1) DE1045103B (en)
FR (1) FR1147491A (en)
GB (1) GB824278A (en)
LU (1) LU34180A1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2702288A (en) * 1952-08-08 1955-02-15 Standard Oil Co Ethylene polymerization process
NL87916C (en) * 1952-12-06

Also Published As

Publication number Publication date
CH345155A (en) 1960-03-15
FR1147491A (en) 1957-11-26
LU34180A1 (en)
DE1045103B (en) 1958-11-27

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