GB834554A - Crystalline linear high molecular weight polymers of diolefins and process for preparing them - Google Patents

Crystalline linear high molecular weight polymers of diolefins and process for preparing them

Info

Publication number
GB834554A
GB834554A GB714256A GB714256A GB834554A GB 834554 A GB834554 A GB 834554A GB 714256 A GB714256 A GB 714256A GB 714256 A GB714256 A GB 714256A GB 834554 A GB834554 A GB 834554A
Authority
GB
United Kingdom
Prior art keywords
catalyst
via metal
zinc
group iva
diolefins
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
GB714256A
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.)
Montedison SpA
Original Assignee
Montedison SpA
Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA
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 Montedison SpA, Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA filed Critical Montedison SpA
Publication of GB834554A publication Critical patent/GB834554A/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
    • C08F136/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
    • C08F136/02—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
    • C08F136/04—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
    • C08F136/06—Butadiene

Abstract

A catalyst for use in the polymerization of conjugated diolefines is obtained by contacting an organometallic compound with a solid halide of a Group IVa, Va or VIa metal having a valency lower than the maximum, or with an oxyhalide of a Group IVa, Va or VIa metal. Specified catalyst components are zinc and aluminium alkyls, e.g. the ethyls, titanium and vanadium trichlorides, vanadium oxychloride and chromyl chloride. In examples, media used in the preparation of catalyst are heptane and benzene.ALSO:Conjugated diolefins are polymerized in an organic medium containing an insoluble catalyst obtained by contacting a solid halide of a Group IVa, Va or VIa metal having a valency lower than the maximum, or an oxyhalide of a Group IVa, Va or VIa metal, with an organometallic compound such as an alkyl of zinc or aluminium, e.g. zinc or aluminium ethyl. Diolefins specified are butadiene, isoprene and pentadiene and the IVa, Va and VIa metal compounds used are titanium and vanadium trichlorides, vanadium oxychloride and chromyl chloride. In examples, heptane and benzene are used as media and catalyst is destroyed with methanol, ether/HCl and/or methanol/HCl. The addition of monomer during polymerization is also described. The products may be plasticized, vulcanized and may contain antioxidants and reinforcing agents, and ingredients used are high boiling aromatic hydrocarbons, sulphur, zinc oxide, tetramethyl thiuram disulphide, mercaptobenzothiazole disulphide and carbon black. The polymers obtained are linear and have substantially only 1,4 enchainment. Separation of the trans-1,4 polymer (crystalline) from the amorphous material may be effected with solvents such as ether, acetone, heptane, benzene and methylene chloride. The products find application as sheets and as filaments which may be drawn and annealed.
GB714256A 1955-03-12 1956-03-07 Crystalline linear high molecular weight polymers of diolefins and process for preparing them Expired GB834554A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT105835X 1955-03-12
IT1796955 1955-12-22

Publications (1)

Publication Number Publication Date
GB834554A true GB834554A (en) 1960-05-11

Family

ID=32871004

Family Applications (1)

Application Number Title Priority Date Filing Date
GB714256A Expired GB834554A (en) 1955-03-12 1956-03-07 Crystalline linear high molecular weight polymers of diolefins and process for preparing them

Country Status (9)

Country Link
BE (1) BE545952A (en)
CA (1) CA943695A (en)
CH (1) CH364120A (en)
DE (1) DE1420553A1 (en)
DK (1) DK105835C (en)
FR (1) FR1148848A (en)
GB (1) GB834554A (en)
LU (1) LU34219A1 (en)
NL (1) NL112415C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3290279A (en) * 1962-01-01 1966-12-06 Dunlop Rubber Co Polymerization of isoprene with a vcl3-al(c2h5)3-diisopropyl ether catalyst

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE558147A (en) * 1957-06-06
BE608121A (en) * 1960-10-25
NL295376A (en) * 1962-12-19

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3290279A (en) * 1962-01-01 1966-12-06 Dunlop Rubber Co Polymerization of isoprene with a vcl3-al(c2h5)3-diisopropyl ether catalyst

Also Published As

Publication number Publication date
BE545952A (en)
CA943695A (en) 1974-03-12
FR1148848A (en) 1957-12-16
DK105835C (en) 1966-11-14
DE1420553A1 (en) 1968-11-28
LU34219A1 (en)
NL112415C (en)
CH364120A (en) 1962-08-31

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