Patent GB-1001475-A (GB)
Title: Compositions containing oil-soluble polymeric materials
IPC: C10M145/14
Filed: 1961-12-29
Abstract: Lubricating oil compositions comprise oil-soluble interpolymers composed of a minor proportion of (A) vinyloxyethanol, vinylthio-ethanol, vinyloxypropanol or vinyloxyethoxy-ethanol and a major proportion of (B) one or more alkyl methacrylates, alkyl acrylates, dialkyl fumarates, dialkyl maleates, vinyl esters, a -olefins having at least 8 carbon atoms or mixtures of a -olefins having an average of at least 8 carbon atoms.  The oils may be natural or synthetic, and the compositions may also comprise conventional additives, e.g. calcium and barium salts of hydrolysed polyisobutylene-phosphorus pentasulphide reaction products. Examples describe compositions comprising solvent-refined petroleum oils and copolymers of vinyloxyethanol and (2-7, 13, 21, 23 and 25) "Lorol" methacrylate; (8-12, 14, 22, 24, 26) "Lorol" methacrylate and methyl methacrylate; (15-17) "Lorol" methacrylate and dibutyl fumarate; (18-20) "Lorol" methacrylate, methyl methacrylate and dibutyl fumarate; (27 and 28) oxo-tridecyl methacrylate, tallow methacrylate and methyl methacrylate and (29) "Lorol" methacrylate, tallow methacrylate and methyl methacrylate.  In Example (30) compositions comprising solvent refined petroleum oils, the polymer additives of Examples 26 to 29 and barium containing detergents. Specification 1,001,474 is referred to.ALSO:Oil-soluble interpolymers composed of a minor proportion of (A) vinyloxyethanol, vinylthioethanol, vinyloxypropanol or vinyloxyethoxyethanol and a major proportion of (B) one or more alkyl methacrylates, alkyl acrylates, dialkyl fumarates, dialkyl maleates, vinyl esters, a -olefins having at least 8 carbon atoms or mixtures of a -olefins having an average of at least 8 carbon atoms, may be prepared by copolymerizing the monomers in the presence of a catalyst.  Predominantly syndiotactic polymers may be prepared using conventional free radical catalysts and predominantly isotactic polymers using organometallic catalysts such as phenyl magnesium bromide and lithium alkyls.  Many suitable monomers are listed and examples describe the preparation in benzene in the presence of azobisisobutyronitrile of copolymers of (2-7, 13, 15 and 16) "Lorol" methacrylate and vinyloxyethanol; (8-12, 14, 18 and 19) "Lorol" methacrylate, methyl methacrylate and vinyloxyethanol; in the presence of benzoyl peroxide of copolymers of (17) "Lorol" methacrylate and vinyloxyethanol; and (20) "Lorol" methacrylate, methyl methacrylate and vinyloxyethanol; and the preparation of copolymers of "Lorol" methacrylate and vinyloxyethanol with (23) and without (21) methyl methacrylate in the presence of azodiisobutyronitrile and triethylamine and with (24) and without (22) methyl methacrylate in the presence of azodiisobutyronitrile and pyridine; small amounts of dibutyl fumarate also being present in Examples 15-20.  Further examples describe the preparation of syndiotactic polymers in the presence of (25) triethyl boron and cumene hydroperoxide with (26-29) pyridine from (25) lauryl methacrylate and vinyloxyethanol; (26) lauryl methacrylate, methyl methacrylate and vinyloxyethanol; (27 and 28) oxo-tridecyl methacrylate, tallow methacrylate, methyl methacrylate and vinyloxyethanol; and (29) lauryl methacrylate, tallow methacrylate, methyl methacrylate and vinyloxyethanol.  The polymers may be added to mineral and synthetic oils, e.g. lubricating, automatic transmission, diesel, furnace and hydraulic oils. Specification 1,001,474 is referred to.