GB1186565A - Process for the Recovery of Essentially Pure Amorphous Polyolefins - Google Patents

Process for the Recovery of Essentially Pure Amorphous Polyolefins

Info

Publication number
GB1186565A
GB1186565A GB26969/67A GB2696967A GB1186565A GB 1186565 A GB1186565 A GB 1186565A GB 26969/67 A GB26969/67 A GB 26969/67A GB 2696967 A GB2696967 A GB 2696967A GB 1186565 A GB1186565 A GB 1186565A
Authority
GB
United Kingdom
Prior art keywords
polymer
solution
alpha
recovering
pure amorphous
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
GB26969/67A
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.)
Sunoco Inc
Original Assignee
Sun Oil 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 Sun Oil Co filed Critical Sun Oil Co
Publication of GB1186565A publication Critical patent/GB1186565A/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
    • C08F6/04—Fractionation

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

1,186,565. Fractionating alpha-olefin polymers. SUN OIL CO. 12 June, 1967 [17 June, 1966], No. 26969/67. Heading C3P. Substantially pure amorphous alpha-olefin polymers are recovered from a saturated hydrocarbon solution containing 0À1 to 10 per cent by weight of a mixture of amorphous, stereoblock and crystalline alpha-olefin polymers by (a) heating and concentrating the dilute polymersolvent solution by distilling off solvent to a concentration of from 10 to 40 weight per cent polymer in solution, (b) cooling the concentrated solution to a temperature of from 15‹ to 30‹ C., (c) centrifuging the cooled solution and recovering a filtrate substantially free of crystalline polymer, (d) diluting the centrifuged filtrate with hydrocarbon solvent to a polymer in solvent concentration of from 5 to 15 weight per cent polymer, (e) filtering the resulting diluted centrifuge filtrate and recovering an amorphous alpha-olefin polymer solution substantially free of stereoblock polymer and (f) recovering from the last-mentioned solution a substantially pure amorphous alpha-polymer. The above starting solution is obtained from a polymerization process using a Ziegler-Natta-type catalyst after the polymerizate has been treated to recover from it the hexane insoluble fraction i.e. the crystalline or isotactic fraction. The preferred polymers are polypropylene and copolymers of ethylene and propylene. A flow diagram is given of a continuous method for recovering substantially pure amorphous alphaolefin polymers.
GB26969/67A 1966-06-17 1967-06-12 Process for the Recovery of Essentially Pure Amorphous Polyolefins Expired GB1186565A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US55849566A 1966-06-17 1966-06-17

Publications (1)

Publication Number Publication Date
GB1186565A true GB1186565A (en) 1970-04-02

Family

ID=24229770

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26969/67A Expired GB1186565A (en) 1966-06-17 1967-06-12 Process for the Recovery of Essentially Pure Amorphous Polyolefins

Country Status (5)

Country Link
DE (1) DE1745394A1 (en)
ES (1) ES342623A1 (en)
FR (1) FR1529998A (en)
GB (1) GB1186565A (en)
NL (1) NL6708304A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1391498A1 (en) * 2001-05-08 2004-02-25 Sanyo Chemical Industries, Ltd. Fluidity improver and fuel oil composition

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1391498A1 (en) * 2001-05-08 2004-02-25 Sanyo Chemical Industries, Ltd. Fluidity improver and fuel oil composition
EP1391498A4 (en) * 2001-05-08 2009-08-12 Sanyo Chemical Ind Ltd Fluidity improver and fuel oil composition

Also Published As

Publication number Publication date
ES342623A1 (en) 1968-07-16
DE1745394A1 (en) 1972-03-02
NL6708304A (en) 1967-12-18
FR1529998A (en) 1968-06-21

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees