GB841898A - Process for preparing low molecular weight polyolefines - Google Patents

Process for preparing low molecular weight polyolefines

Info

Publication number
GB841898A
GB841898A GB24467/57A GB2446757A GB841898A GB 841898 A GB841898 A GB 841898A GB 24467/57 A GB24467/57 A GB 24467/57A GB 2446757 A GB2446757 A GB 2446757A GB 841898 A GB841898 A GB 841898A
Authority
GB
United Kingdom
Prior art keywords
molecular weight
high molecular
low molecular
polyolefin
propylene
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
GB24467/57A
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst AG
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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB841898A publication Critical patent/GB841898A/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
    • C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F210/16—Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
    • 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
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/50—Partial depolymerisation
    • 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
    • C08F2810/00—Chemical modification of a polymer
    • C08F2810/10—Chemical modification of a polymer including a reactive processing step which leads, inter alia, to morphological and/or rheological modifications, e.g. visbreaking

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

Low molecular weight solid polyolefins are prepared by heating a high molecular weight low pressure Ziegler solid polyolefin to 300 to 600 DEG C. in the absence of oxygen or other oxidising agent. The high molecular weight polyolefin may be decomposed in the presence of hydrogen and a hydrogenation catalyst. A bleaching agent may be incorporated in the high molecular weight polyolefin before decomposition and an inert gas passed through the reaction mixture in a fluidized bed. The products generally have a molecular weight of from 500-2000. Specified olefins are ethylene, propylene, 80 ethylene-10 propylene, and butene-1 and copolymers thereof.
GB24467/57A 1956-08-01 1957-08-01 Process for preparing low molecular weight polyolefines Expired GB841898A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE841898X 1956-08-01

Publications (1)

Publication Number Publication Date
GB841898A true GB841898A (en) 1960-07-20

Family

ID=6768179

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24467/57A Expired GB841898A (en) 1956-08-01 1957-08-01 Process for preparing low molecular weight polyolefines

Country Status (5)

Country Link
BE (1) BE559749A (en)
DE (1) DE1048415B (en)
FR (1) FR1180783A (en)
GB (1) GB841898A (en)
NL (2) NL128411C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3198779A (en) * 1961-11-15 1965-08-03 Allied Chem Process of producing low molecular weight hydrocarbon resins
WO1998039368A1 (en) * 1997-03-03 1998-09-11 Ivan Madar Process for thermal and/or catalytic decomposition and/or depolymerization of low-grade organic substances and device for carrying out the process

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1245129B (en) * 1960-02-05 1967-07-20 Dynamit Nobel Ag Process for the thermal degradation of low pressure polyethylenes
DE2952720A1 (en) * 1979-12-29 1981-07-02 Basf Ag, 6700 Ludwigshafen Expelling crosslinked polyethylene oxidn. by=products from plant - by heating in oxygen absence to form removable liq. dissociation prods.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3198779A (en) * 1961-11-15 1965-08-03 Allied Chem Process of producing low molecular weight hydrocarbon resins
WO1998039368A1 (en) * 1997-03-03 1998-09-11 Ivan Madar Process for thermal and/or catalytic decomposition and/or depolymerization of low-grade organic substances and device for carrying out the process
GB2337265A (en) * 1997-03-03 1999-11-17 Ivan Madar Process for thermal and/or catalytic decomposition and/or depolymerization of low-grade organic substances and device for carrying out the process
GB2337265B (en) * 1997-03-03 2001-06-13 Ivan Madar Process for thermal and/or catalytic decomposition and/or depolymerization of low-grade organic substances and device for carrying out the process

Also Published As

Publication number Publication date
FR1180783A (en) 1959-06-09
DE1048415B (en) 1959-01-08
BE559749A (en)
NL219262A (en)
NL128411C (en)

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