GB856577A - Recovery of polymers from solutions thereof and polymers so recovered - Google Patents

Recovery of polymers from solutions thereof and polymers so recovered

Info

Publication number
GB856577A
GB856577A GB18166/57A GB1816657A GB856577A GB 856577 A GB856577 A GB 856577A GB 18166/57 A GB18166/57 A GB 18166/57A GB 1816657 A GB1816657 A GB 1816657A GB 856577 A GB856577 A GB 856577A
Authority
GB
United Kingdom
Prior art keywords
methyl
polymer
ketone
solvent
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
GB18166/57A
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 GB856577A publication Critical patent/GB856577A/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)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

A polymer of a 1- olefin having a maximum of eight carbon atoms and no branching nearer the double band than the 4-position is recovered from its solution in a hydrocarbon solvent by precipitating a portion only of the polymer separating the resultant precipitate from the supernatant liquid and adding to this liquid an anti-solvent so as to precipitate dissolved polymer p from the supernatant liquid. Specified polymers are those of ethylene and/or propylene, of 1,3 butadiene and of isoprene. The hydrocarbon solvents listed are paraffins and cycloparaffins, while anti-solvents are acetone, methyl ethyl ketone, methyl isooctane ketone, methyl propyl ketone and ethyl propyl ketone, methyl, ethyl, isopropyl, n-buxyl, n-propyl, isobutyl and amyl alcohols. The polymer is preferably prepared using chromium oxide containing a substantial proportion of hexavalent chromium associated with at least one of silica, alumina zirconia and thoria as catalyst. The precipitate may also be washed with an anti-solvent. Apparatus for carrying out the process is described. Specifications 790,195 and 804,641 are referred to.
GB18166/57A 1956-07-02 1957-06-07 Recovery of polymers from solutions thereof and polymers so recovered Expired GB856577A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US856577XA 1956-07-02 1956-07-02

Publications (1)

Publication Number Publication Date
GB856577A true GB856577A (en) 1960-12-21

Family

ID=22193098

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18166/57A Expired GB856577A (en) 1956-07-02 1957-06-07 Recovery of polymers from solutions thereof and polymers so recovered

Country Status (3)

Country Link
BE (1) BE558674A (en)
FR (1) FR1177930A (en)
GB (1) GB856577A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10961367B2 (en) 2017-11-20 2021-03-30 Polystyvert Inc. Processes for recycling polystyrene waste
US11407877B2 (en) 2018-10-26 2022-08-09 Polystvert Inc. Processes for recycling polystyrene waste and/or polystyrene copolymer waste
US11407878B2 (en) 2014-10-03 2022-08-09 Polystyvert Inc. Processes for recycling polystyrene waste

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11407878B2 (en) 2014-10-03 2022-08-09 Polystyvert Inc. Processes for recycling polystyrene waste
US10961367B2 (en) 2017-11-20 2021-03-30 Polystyvert Inc. Processes for recycling polystyrene waste
US11680149B2 (en) 2017-11-20 2023-06-20 Polystyvert Inc. Processes for recycling polystyrene waste
US11407877B2 (en) 2018-10-26 2022-08-09 Polystvert Inc. Processes for recycling polystyrene waste and/or polystyrene copolymer waste

Also Published As

Publication number Publication date
FR1177930A (en) 1959-04-30
BE558674A (en)

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