Patent GB-1236161-A (GB)
Title: Composition and lubricants
IPC: C10N30/04
Filed: 1969-02-12
Abstract: 1,236,161. Lubricants; fuels. LUBRIZOL CORP. 12 Feb., 1969 [13 March, 1968], No. 7641/69. Headings C5F and C5G. [Also in Division C3] An oil-soluble ester imparting sludge-dispersing properties to lubricating oils and in fuels serving to reduce the formation of carbonaceous deposits within the engine, is characterized by the presence within its structure of (a) a Garboxylic acid moiety which is the acyl residue of a monocarboxylic acid having at least fifty aliphatic carbon atoms (exclusive of the carboxyl carbon atom) and being substantially free from ethylenic unsaturation and (b) an alcohol moiety which is the oxy residue of a polyhydric alcohol or an amino alcohol. The lubricating oil may be mineral or synthetic (many examples given) and the fuel may be gasoline, diesel oil, jet fuel or kerosene. Examples are directed to the preparation of carboxylic acid esters, as follows: reacting the reaction, product of chlorinated polyisobutylene and acrylic acid with sorbitol, sorbitol mono-oleate, pentaerythritol polyoxyethylene glycol and polyoxypropylene glycol and specified ethers thereof, diethylene glycol dimethylether, di - (2 - hydroxyethyl) amine, N,N - di - (2 - hydroxyethyl) ethylenediamine, 1,4 - di - (2 - hydroxyethyl) piperazine, N - (2 - hydroxyethyl) morpholine or N,N - di - (2 - hydroxyethyl) glycine, under a nitrogen atmosphere in the presence of oil as diluent (optional), reacting the reaction product of polyisobutylene and chloroacetyl chloride with glycerol or mannitol; and reacting the reaction product of isobutylene-propylene copolymer with mannitol. Examples disclose mineral oils containing minor amounts of the following: the ester produced by reacting the reaction product of chlorinated polyisobutylene and acrylic acid with sorbitol, pentaerythritol, diethylene glycol dimethylether, the monophenyl ether of trioxypropylene glycol or N,N- di-(2-hydroxyethyl) glycine, or by reacting the reaction product of polyisobutylene and chloroacetyl chloride with glycerol, and the zinc salt of an equimolar mixture of di-cyclohexyl phosphorodithioic acid and di-isobutyl-phosphorodithioic acid (in Example D) the adduct obtained by heating di-nonyl-phosphorodithioate with 1,2-hexene oxide, a sulphurized methyl ester of tall oil acid, polyisobutylene (viscosity index improver), poly-(alkyl methacrylate) (antifoam agent), lard oil (in Example E) dioctylphosphorodithioate, the hydrolysed reaction product of propylene with phosphorus pentasulphide and sulphur neutralized with barium hydroxide, barium sulphonate detergent, an ashless dispersant prepared by copolymerizing decylmethacrylate with diethyl aminoethyl acrylate, and (in Example F) di-2-ethylhexyl sebacate. Examples disclose also a diesel fuel containing the ester produced by reacting the reaction product of chlorinated polyisobutylene and acrylic acid with N,N<SP>1</SP>-di-(2-hydroxyethyl) ethylenediamine, kerosene containing the ester produced by reacting the said reaction product with di-(2-hydroxyethyl) amine, and gasoline containing the ester produced by reacting the reaction product with N-(2-hydroxyethyl) morpholine.