FR2429230A1 - Recovery of atactic polypropylene after propylene polymerisation - by passage of soln. through heated tube - Google Patents

Recovery of atactic polypropylene after propylene polymerisation - by passage of soln. through heated tube

Info

Publication number
FR2429230A1
FR2429230A1 FR7818744A FR7818744A FR2429230A1 FR 2429230 A1 FR2429230 A1 FR 2429230A1 FR 7818744 A FR7818744 A FR 7818744A FR 7818744 A FR7818744 A FR 7818744A FR 2429230 A1 FR2429230 A1 FR 2429230A1
Authority
FR
France
Prior art keywords
atactic polypropylene
propylene
soln
solvent
recovery
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.)
Granted
Application number
FR7818744A
Other languages
French (fr)
Other versions
FR2429230B1 (en
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
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
Priority to JP15505076A priority Critical patent/JPS5914485B2/en
Priority to NL7806230A priority patent/NL177921C/en
Application filed by Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to AT454678A priority patent/AT355301B/en
Priority to FR7818744A priority patent/FR2429230A1/en
Priority to BE188790A priority patent/BE868380A/en
Publication of FR2429230A1 publication Critical patent/FR2429230A1/en
Application granted granted Critical
Publication of FR2429230B1 publication Critical patent/FR2429230B1/fr
Granted 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
    • C08F6/06—Treatment of polymer solutions
    • C08F6/12—Separation of polymers from solutions

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

Atactic polypropylene is recovered from soln. formed as a by-product in the prepn. of a polymer contg. propylene, i.e. a propylene homopolymer, or a copolymer of propylene with another alpha-olefin. This is by vaporising the solvent in an elongated tubular heating zone, pref. at 120-300 degrees c. A press. difference of >=3, (3-50) kg/cm2 is maintained between the entry and exit, the exit speed being >=40, (40-160) m/sec. Fine molten particles of atactic polypropylene practically free of solvent are formed in suspension. These are sepd. from solvent in a sepn. zone. Method is easy to perform, allowing recovery without blocking or clogging of the evapn. appts., and without needing (BE868380) mechanical entrainment appts.
FR7818744A 1978-06-22 1978-06-22 Recovery of atactic polypropylene after propylene polymerisation - by passage of soln. through heated tube Granted FR2429230A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP15505076A JPS5914485B2 (en) 1978-06-22 1976-12-24 Recovery method of atactic polypropylene
NL7806230A NL177921C (en) 1978-06-22 1978-06-08 PROCESS FOR THE EXTRACTION OF ATACTIC POLYPROPENE FROM A SOLUTION.
AT454678A AT355301B (en) 1978-06-22 1978-06-22 METHOD FOR OBTAINING ATACTICAL POLYPROPYLENE
FR7818744A FR2429230A1 (en) 1978-06-22 1978-06-22 Recovery of atactic polypropylene after propylene polymerisation - by passage of soln. through heated tube
BE188790A BE868380A (en) 1978-06-22 1978-06-22 PROCESS FOR RECOVERING ATACTIC POLYPROPYLENE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7818744A FR2429230A1 (en) 1978-06-22 1978-06-22 Recovery of atactic polypropylene after propylene polymerisation - by passage of soln. through heated tube

Publications (2)

Publication Number Publication Date
FR2429230A1 true FR2429230A1 (en) 1980-01-18
FR2429230B1 FR2429230B1 (en) 1985-02-15

Family

ID=9209868

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7818744A Granted FR2429230A1 (en) 1978-06-22 1978-06-22 Recovery of atactic polypropylene after propylene polymerisation - by passage of soln. through heated tube

Country Status (5)

Country Link
JP (1) JPS5914485B2 (en)
AT (1) AT355301B (en)
BE (1) BE868380A (en)
FR (1) FR2429230A1 (en)
NL (1) NL177921C (en)

Also Published As

Publication number Publication date
NL177921B (en) 1985-07-16
JPS5914485B2 (en) 1984-04-04
NL7806230A (en) 1979-12-11
AT355301B (en) 1980-02-25
JPS5379982A (en) 1978-07-14
NL177921C (en) 1985-12-16
FR2429230B1 (en) 1985-02-15
ATA454678A (en) 1979-07-15
BE868380A (en) 1978-10-16

Similar Documents

Publication Publication Date Title
BR9609057A (en) Polymer particle powder
GB863417A (en) Process for strengthening hollow bodies of plastic material
EP0466926A4 (en) Syndiotactic polypropylene molding and method of producing the same
FR2193042A1 (en) Monomer removal from pvc - using condensed water vapour
GB991089A (en) Recovery of solid olefin polymers from slurries thereof
FR2429230A1 (en) Recovery of atactic polypropylene after propylene polymerisation - by passage of soln. through heated tube
ES2194252T3 (en) PROPYLENE POLYMERS.
PT68125A (en) Method for recovering atactic polypropylene
GR3032802T3 (en) Web of fabric and process for its production
JPS527892A (en) Process for producing catalyst components for polymerization of alpha-olefin
DE3475755D1 (en) Collet for automatic lathes
IE31898L (en) Producing urea
GB2004808A (en) Process of forming hollow articles of thermo-plastics materials
Fedoseev et al. Growth kinetics of silicon carbide crystals
IT7923261A0 (en) PROCEDURE AND APPARATUS FOR PRODUCING ARCED TUBULAR BODIES, WHOSE CROSS SECTION NARROWS PROGRESSIVELY FROM ONE END TO THE OTHER.
JPS5519551A (en) Method of manufacturing plastic sheet reinforced with wire-netting
FR2123521A1 (en) Vincamine prepn - by epimerisation of 16-epi-vincamine
JPS5431454A (en) Vinyl chloride resin composition
Feil et al. Wire coating process
GB1010466A (en) Improvements in or relating to adhesive compositions
US3463757A (en) Production of fibrous polyoxymethylene
DE2965747D1 (en) Method and apparatus for opening fibrillated film networks
JPS5366952A (en) Manufacture of molded articles of polypropylene
DE1595834A1 (en) Polymerization apparatus
JPS54149782A (en) Production of flexible tube

Legal Events

Date Code Title Description
ST Notification of lapse
ST Notification of lapse