Patent GB-916215-A (GB)
Title: Polymers
Inventor: BEYNON KENNETH IVOR
IPC: C08F10/14
Filed: 1960-09-06
Abstract: A lubricant consists of a polymer of a straightchain olefine having in the molecule at least 9 but not more than 18 carbon atoms, or a branched chain olefine having in the molecule at least 10 but not more than 18 carbon atoms which has been made by polymerizing the olefine in the presence of a "Ziegler-type" catalyst and an aliphatic halide (see Group IV(a)), or such a polymer in admixture with a synthetic or mineral oil.  The polymer or blends of the polymer with oils may be mixed with additional additives such as pour point depressants, viscosity index improvers, thickeners, anti-oxidants, anti-corrosive agents, and anti-lacquering agents.  Oils mentioned are hydrocarbons obtained from a paraffinic, naphthenic, Mid-Continent, or Coastal Stock, or mixtures thereof, copolymers of alkylene glycols and alkylene oxides, organic esters, e.g. di-(2-ethylhexyl)-sebacate dinonyl sebacate, dinonyl adipate, dioctyl phthalate, tricetyl phosphate, polymeric tetrahydrofuran, and dimethyl silicone polymer.  Pour point depressants and viscosity index improvers mentioned are the methyl ethyl, n-propyl, isopropyl, isobutyl, lauryl, phenyl, or benzyl esters of acrylic or 2-alkylacrylic acid, and the polymers made according to the processes of Specifications 873,065, and 873,067.  Suitable anti-lacquering agents are the zinc and calcium salts of benzoic acid, naphthoic acid, phenols, and higher alkylated salicylic acids.  Specified antioxidants are 10-benzyl phenothiazine, and the reaction mixture comprising 10-benzyl phenothiazine described in Specification 873,066.  The blends may also include extreme pressure additives such as trioctyl or tricresyl phosphates.ALSO:Polymers of straight-chain olefines having in the molecule at least 9 but not more than 18 carbon atoms, or of branched chain olefines having in the molecule at least 10 but not more than 18 carbon atoms, are made by polymerizing one or more of the olefines in the presence of an aliphatic halide and a catalyst comprising at least one component (A) selected from a compound of a metal of Group IVa, Va, or VIIa of the Mendel<\>eeff Periodic Table, and a component (B) comprising at least one element or compound selected from (1) a Group I, II, or III metal or an alloy thereof, or (2) an organometallic compound or a hydride of a Group I, II, or III metal, or tin, or lead.  The (A) compound is preferably a chloride, bromide, iodide, or oxychloride of titanium, tin, or lead. Specified (B) components are zinc dimethyl, magnesium dipropyl, lithium aluminium hydride, sodium aluminium triethyl chloride, gallium triethyl, aluminium triethyl, diethyl aluminium bromide, dimethyl aluminium hydride, phenoxidiethyl aluminium, dimethyl aminodiethyl aluminium, piperidyldiethyl aluminium, (methylcyclohexylamino)-diethyl aluminium, (N-methylamino)-diethyl aluminium, diisobutyl aluminium benzoate, ethyl aluminium dichloride, and ethyl aluminium sesquichloride. Prior to polymerization, the olefines may be purified, e.g. urea-extracted.  Many aliphatic halides are mentioned in the Specification.  The preferred halides are chloroform and carbon tetrachloride.  Hydrocarbon solvents and diluents may also be included in the polymerizable mix.  The process may be effected in a continuous manner.  The polymers alone, or in admixture with other oils may be employed as lubricants. Specifications 799,392, 799,823, 801,031, 810,023, 819,867, 820,263, 873,065, 873,066, 873,067 and 879,506 are referred to.