GB843424A - Improvements in and relating to the polymerization of aliphatic olefins and the resulting polyolefins - Google Patents

Improvements in and relating to the polymerization of aliphatic olefins and the resulting polyolefins

Info

Publication number
GB843424A
GB843424A GB28452/58A GB2845258A GB843424A GB 843424 A GB843424 A GB 843424A GB 28452/58 A GB28452/58 A GB 28452/58A GB 2845258 A GB2845258 A GB 2845258A GB 843424 A GB843424 A GB 843424A
Authority
GB
United Kingdom
Prior art keywords
oxides
alumina
silica
polymerization
ratio
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
GB28452/58A
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.)
Bataafsche Petroleum Maatschappij NV
Original Assignee
Bataafsche Petroleum Maatschappij NV
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 Bataafsche Petroleum Maatschappij NV filed Critical Bataafsche Petroleum Maatschappij NV
Publication of GB843424A publication Critical patent/GB843424A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F10/00Homopolymers 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)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Abstract

A low pressure process for the polymerization of aliphatic olefins comprises contacting an aliphatic olefin with a catalyst comprising oxides, as hereinafter defined, of chromium, aluminium and silicon the ratio by weight of alumina to silica being from 15 : 85 to 40 : 60. Oxides are defined as including both free oxides and those present in chemically combined for e.g. silicates. Specified olefins are ethylene, propylene and their mixtures. The polymerization may be carried out in the liquid phase. The preferred proportions of alumina to silica are from 20 : 80 to 35 : 65 and the chromium oxide content from 0,1 to 10%. Specifications 804,641 and 804,642 are referred to.ALSO:A catalyst for low pressure aliphatic olefin polymerization, comprises oxides of chromium, aluminium and silicon, the ratio of alumina to silica being from 15:85 to 40:60. Oxides is defined as including both free oxides and those present in chemically combined form e.g. silicates. The preferred ratio of alumina to silica is 20:80 to 35:65 while the preferred chromium oxide content is from 0.1 to 10%. The alumina/silica starting material may contain fluorine. Specifications 804,641 and 804,642 are referred to.
GB28452/58A 1957-09-06 1958-09-04 Improvements in and relating to the polymerization of aliphatic olefins and the resulting polyolefins Expired GB843424A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL843424X 1957-09-06

Publications (1)

Publication Number Publication Date
GB843424A true GB843424A (en) 1960-08-04

Family

ID=19845071

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28452/58A Expired GB843424A (en) 1957-09-06 1958-09-04 Improvements in and relating to the polymerization of aliphatic olefins and the resulting polyolefins

Country Status (5)

Country Link
BE (1) BE570928A (en)
DE (1) DE1080779B (en)
FR (1) FR1210893A (en)
GB (1) GB843424A (en)
NL (2) NL220578A (en)

Also Published As

Publication number Publication date
DE1080779B (en) 1960-04-28
NL220578A (en)
NL100236C (en)
BE570928A (en)
FR1210893A (en) 1960-03-11

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