GB407948A - Improved methods of making plastic elastic materials - Google Patents

Abstract

Plastic materials prepared by reacting an aromatic compound of the general formula R-C6H4-R<1> (where R and R<1> represent hydrogen or a saturated aliphatic hydrocarbon radical containing more than one carbon atom) with an ethylene dihalide in the presence of aluminium chloride and in the presence or absence of rubber may be dispersed in water in the presence of nitrobenzene, soap, casein or sodium hydroxide.ALSO:Plastic materials, which are resistant to abrasion and to the action of water, acid, alkali and many organic liquids are prepared by reacting an aromatic compound of the general formula R--C6H4--R<1> (where R and R<1> each represent hydrogen or a saturated aliphatic hydrocarbon radical containing more than one carbon atom) with an ethylene dihalide, such as the chloride or bromide, in the presence of aluminium chloride and in the presence or absence of rubber. The reaction yields a jelly like mass which is washed with water which may contain butyl acetate, acid or alkali preferably in the presence of steam and then dried. The products, which may be chlorinated, may be milled and mixed with fillers, pigments or fibrous materials such as carbon black, zinc oxide, whiting, clay, asbestos fibres and rubber or rubber compounds and used in the manufacture of heat-resisting covers for conveyer belts and flexible linings for tanks, barrels, ball mills and pipe lines. Suitable aromatic compounds include benzene, ethyl- and diethylbenzene, iso-propylbenzene and butyl benzene. In examples: (1) benzene; (2) ethylbenzene; (3) benzene and crepe; (4) n-butylbenzene; (5) p-diethylbenzene and (6) sym-diphenylethane are condensed with ethylene dichloride in the presence of aluminium chloride. The Specification as open to inspection under Sect. 91 referred to the use of other Friedel-Kraft's type catalysts and was not limited to the use of any catalyst. This subject-matter does not appear in the Specification as accepted.ALSO:Flexible linings for ball mills are prepared from plastic materials obtained by reacting an aromatic compound of the general formula R - C6H4 - R1(where R and R1 each represent hydrogen or a saturated aliphatic hydrocarbon radical containing more than one carbon atom) with an ethylene dihalide in the presence of aluminium chloride in the presence or absence of rubber. Pigments, fillers and fibrous materials may be added to the plastic materials.ALSO:Plastic materials prepared by reacting an aromatic compound of the general formula R-C6H4-R1 (where R and R1 represent hydrogen or a saturated aliphatic hydrocarbon radical containing more than one carbon atom) with an ethylene dihalide in the presence or absence of rubber and in the presence of aluminium chloride may be milled and mixed with pigments, fillers or fibrous materials such as carbon black, zinc oxide, whiting, clay, asbestos fibres, rubber or rubber compounds and used in the manufacture of covers for conveyer belts and linings for tanks, barrels, ball mills and pipe lines.