Patent GB-873068-A (GB)
Title: Halogen-containing hydrocarbon polymers
Inventor: BENYON JOHN HENRY
IPC: C10M107/10
Filed: 1959-10-15
Abstract: Halogenated and/or sulphohalogenated polymers of an olefine having in the molecule at least six but not more than eighteen carbon are made by polymerizing one or more such olefines in the presence of a catalyst comprising (a) a compound of a metal of Group 4(a), 5(a), 6(a) or 7(a) of the Mendeleeff Periodic Table of Elements and (b) a group 1, 2 or 3 metal or alloy thereof, or an organo-metallic compound or hydride of a Group 1, 2, or 3 metal, tin or lead, or an organic boron compound or addition complex thereof in which the mole ratio of (b) to (a) is between 0,05 : 1 and 1 : 1 and the polymer is reacted with a halogenating agent or a sulphohalogenating agent.  The polymerization is preferably effected in the presence of an inert solvent or diluent.  The halogenation or sulphohalogenation may be carried out in the polymerization reaction mixture, or on the polymer after it has been removed from the reaction mixture and purified to remove catalyst residues.  The polymer may be dissolved in iso-octane or cyclohexane during the halogenation or sulphohalogenation.  The olefines may be purified or urea-extracted before polymerization. The polymer may be purified of catalyst by conventional techniques.  The halogenating or sulphohalogenating agents may be chlorine, thionyl chloride or sulphuryl chloride, or sulphur monochloride.  Dimers and low-molecular weight polymers may be removed from the polymers by the method described in Specification 873,064.  The preferred catalyst component (b) are aluminium compounds such as aluminium triethyl, diethyl aluminium bromide, dimethyl aluminium hydride, phenoxydiethyl or dimethylaminodiethyl or piperidyldiethyl or (methylcyclohexylamino)-diethyl, or (N-methylamino)-diethyl aluminium, or diiobutyl aluminium benzoate, ethyl aluminium dichloride or ethyl aluminium sesqui-chloride.  The preferred catalyst (a) compounds are titanium or lead or tin tetrahalide or vanadium oxychloride.  The halogenated or sulphohalogenated polymers may be used as lubricants alone, or in admixture with mineral or synthetic lubricating oils.  Specifications 799,392, 799,823, 801,031, 810,023, 819,867, 820,263, 873,065, 876,066 and 873,067 also are referred to.ALSO:Halogenated and/or sulphohalogenated polymers of an olefine having in the molecule at least six but not more than 18 carbon atoms and made by a "Ziegler low-pressure" process (see Group IV(a)), are used as lubricating oils per se but preferably as a blend with mineral or synthetic oils.  The oil may be a hydrocarbon oil from a paraffinic, naphthenic, Mid-Continent, or Coastal Stock, or mixtures thereof, or a copolymer of alkylene glycols and alkylene oxides, di-(2-ethylhexyl) sebacate, dinonyl sebacate, dinonyl adipate, dioctyl phthalate, tricetyl phosphate, polymeric tetrahydrofuran, or dimethyl silicone polymers.  The blends may also include pour point depressants and viscosity improvers such polymers of acrylic and methacrylic acid, thickeners, antioxidants such as 10-benzyl phenothiazine, anti-corrosive and anti-lacquering agents such as zinc and calcium salts of aromatic acids, and extreme pressure additives such as trioctyl and tricresyl phosphates. Specifications 799,392, 799,823, 801,031, 810,023, 819,867, 820,263, 873,064, 873,065, 873,067 and 876,066 are referred to.