GB801555A - Improvements in or relating to the polymerisation of vinyl-aromatic compounds - Google Patents

Improvements in or relating to the polymerisation of vinyl-aromatic compounds

Info

Publication number
GB801555A
GB801555A GB3210256D GB3210256D GB801555A GB 801555 A GB801555 A GB 801555A GB 3210256 D GB3210256 D GB 3210256D GB 3210256 D GB3210256 D GB 3210256D GB 801555 A GB801555 A GB 801555A
Authority
GB
United Kingdom
Prior art keywords
titanium
aluminium
monochloride
vinyl
tetra
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
GB3210256D
Inventor
Peter Bailes
Kathleen Walsh
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.)
Petrochemicals Ltd
Original Assignee
Petrochemicals Ltd
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 BE552423D priority Critical patent/BE552423A/xx
Application filed by Petrochemicals Ltd filed Critical Petrochemicals Ltd
Priority to GB3210256D priority patent/GB801555A/en
Priority to FR1159548D priority patent/FR1159548A/en
Publication of GB801555A publication Critical patent/GB801555A/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
    • C08F32/00—Homopolymers and copolymers of cyclic compounds having no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system

Abstract

A catalyst for the polymerization of vinyl aromatic compounds comprises a mixture of (a) RMX3, where M is titanium, zirconium or thorium, X is less electro-negative than chlorine and R is an alkoxy group or a halogen atom; and (b) an aluminium dialkyl monochloride and aluminium trialkyl or a mixture of an aluminium trialkyl and aluminium trichloride. Specified catalysts (a) are titanium tetra-ethoxide, tetra-isopropoxide or tetra-tertiary hetoxide, titanium tributyrate monochloride and titanium tribenzoate monochloride. Specification 801,554, [Group IV (a)], is referred to.ALSO:Vinyl-aromatic compounds are polymerized using as catalyst a mixture of (a) and (b), where (a) has the formula RM(X)3 where M is titanium, zirconium or thorium, X is less electronegative than chlorine and R is an alkoxy group or a halogen atom, and (b) is an aluminium dialkyl monochloride, an aluminium trialkyl or a mixture of an aluminium trialkyl and aluminium trichloride. Specified vinyl-aromatic compounds are styrene, o-, m- and p-methyl and ethyl styrenes, alpha and beta methyl styrenes, p-chloro-styrene, p-trichloromethyl styrene, p-methoxy styrene, 2,5-dichlorostyrene, alpha and beta mono-vinyl tetrahydronaphthalene, phenyl and benzyl acrylate and methacrylate and their halogen-substituted derivatives, vinyl benzoate and mixtures thereof. Specified catalysts (a) are titanium tetraethoxide or tetra isopropoxide or tetra-tertiary butoxide, triethoxy titanium chloride, titanium tributyrate monochloride and titanium tribenzoate monochloride, and (b) is diethyl aluminium monochloride. The polymerization is preferably carried out in an inert solvent such as iso-octane, n-hexane, toluene and ethylene dichloride. The vinyl aromatic compound may be added either in bulk or fed continuously to the catalyst suspended in the solvent. Temperatures from 20 DEG to 120 DEG C. may be employed. The catalyst may be removed after polymerization by decomposition with an alcohol such as methanol, ethanol or isopropanol or with aqueous or alcoholic mineral acid, e.g. hydrochloric acid, and the polymer may be freed from catalyst remnants by the use of an aqueous solution of a detergent as described in Specification 801,554 with or without steam-stripping.
GB3210256D 1955-11-09 1955-11-09 Improvements in or relating to the polymerisation of vinyl-aromatic compounds Expired GB801555A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE552423D BE552423A (en) 1955-11-09
GB3210256D GB801555A (en) 1955-11-09 1955-11-09 Improvements in or relating to the polymerisation of vinyl-aromatic compounds
FR1159548D FR1159548A (en) 1955-11-09 1956-11-06 Styrene polymerization process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3210256D GB801555A (en) 1955-11-09 1955-11-09 Improvements in or relating to the polymerisation of vinyl-aromatic compounds

Publications (1)

Publication Number Publication Date
GB801555A true GB801555A (en) 1958-09-17

Family

ID=10333262

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3210256D Expired GB801555A (en) 1955-11-09 1955-11-09 Improvements in or relating to the polymerisation of vinyl-aromatic compounds

Country Status (3)

Country Link
BE (1) BE552423A (en)
FR (1) FR1159548A (en)
GB (1) GB801555A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0307488A1 (en) * 1987-09-15 1989-03-22 Idemitsu Kosan Company Limited A polystyrene-based resin composition

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3156741A (en) * 1959-01-12 1964-11-10 L I R C Lab Italiani Di Ricerc Copolymers of styrene, dimethyl itaconate and acrylonitrile and a process for their manufacture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0307488A1 (en) * 1987-09-15 1989-03-22 Idemitsu Kosan Company Limited A polystyrene-based resin composition

Also Published As

Publication number Publication date
BE552423A (en)
FR1159548A (en) 1958-06-27

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