GB851931A - Recovery of polymers from solution - Google Patents

Recovery of polymers from solution

Info

Publication number
GB851931A
GB851931A GB13546/57A GB1354657A GB851931A GB 851931 A GB851931 A GB 851931A GB 13546/57 A GB13546/57 A GB 13546/57A GB 1354657 A GB1354657 A GB 1354657A GB 851931 A GB851931 A GB 851931A
Authority
GB
United Kingdom
Prior art keywords
solution
diluent
hexene
polymer
methyl
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
GB13546/57A
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 GB851931A publication Critical patent/GB851931A/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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene

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)

Abstract

Low pressure - produced polyolefins are recovered from hydrocarbon solutions thereof by dispersing the polymer solution in a diluent hydrocarbon, maintained at at least 90 DEG F. and supplying sufficient diluent to establish a diluent-solution ratio so that the resulting mix temperature is below the precipitation temperature of the polymer and then recovering the precipitated polymer. Specified olefins are ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 1-octene, 4-methyl-1- pentene, 4-methyl-1-hexene, 5-ethyl-1-hexene, 6-methyl-1-heptene and 6-ethyl-1-hexene. Specified solvents are propane, isobutane, n-pentane, isopentane, iso-octane, cyclohexane and methylcyclohexane. The concentration of polymer in solution may be within the range 2 to 8% and the ratio of diluent to solution in the range 1 to 5 volumes of diluent per volume of solution. The solution may be introduced at high velocity and finely subdivided, e.g. as a spray, directly into the diluent. Apparatus for carrying out the process is described. Specifications 790,195 and 804,641 are referred to.
GB13546/57A 1956-06-11 1957-04-29 Recovery of polymers from solution Expired GB851931A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US851931XA 1956-06-11 1956-06-11

Publications (1)

Publication Number Publication Date
GB851931A true GB851931A (en) 1960-10-19

Family

ID=22190052

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13546/57A Expired GB851931A (en) 1956-06-11 1957-04-29 Recovery of polymers from solution

Country Status (1)

Country Link
GB (1) GB851931A (en)

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