Patent GB-930504-A (GB)
Title: Boron and nitrogen-containing phosphor-sulphurized products, their preparation and their use as lubricant additives
IPC: C10M159/12
Filed: 1959-12-08
Abstract: A lubricating oil composition comprises a lubricating oil, such as hydrocarbon oils, both natural and synthetic, synthetic oils of the alkylene oxide type or polycarboxylic acid ester type, or polymerized olefines and from 0,0001 to 20% of the product of reaction of a hydrolysed phosphorous sulphide-hydrocarbon reaction product, an aliphatic amine selected from polyamines and hydroxyamines and a boron compound selected from boric acid, boric acid anhydride, boric acid esters, borophosphoric acid and fluoroboric acids.  Concentrates of a suitable base oil containing more than 10%, for example up to 50%, of the boron and phosphorus-containing additives, alone or in combination with other additives, may be used for blending with lubricating oils. Specification 355,214 is referred to.ALSO:A boron and nitrogen-containing phosphorsulphurized product is made by reacting a phosphorus sulphide with a hydrocarbon polymer, hydrolysing the resulting product and reacting the hydrolysed product with an aliphatic amine compound selected from polyamines and hydroxy aliphatic amines and a boron compound selected from boric acid, boric acid anhydride, boric acid esters, borophosphoric acid and fluoroboric acids, such as difluoroboric acid and monofluoroboric acid.  The polymer may be a mono-olefin polymer, copolymer or graft polymer.  Polymers or copolymers of isomono-olefines, such as isobutylene and isoamylene having molecular weights from 150 to 50,000, polymers made by polymerizing the products from the vapour phase cracking of paraffin waxes or vapour phase cracked gasoline fractions, are mentioned.  The hydrolysed phosphorus sulphide-hydrocarbon reaction product may be prepared by any known method.  This product may be neutralized with up to 1,1 moles of amine compound per mole of acid phosphorus in the product and the resulting neutralized product is reacted with from 1 to 3 moles, based on boron, of the boron compound per mole of the resulting neutralized product.  The reaction with the boron compound may be carried out in the presence of a solvent for the boron compound, the reactants heated to a temperature above 100 DEG C. and water stripped from the reaction mixture.  Any solvent used is then stripped off. The product may be used as a lubricating oil additive.  In examples, a hydrolysed phosphorus sulphide-hydrocarbon reaction product is made by reacting P2S5 with a butylene polymer of M.W. 750-800 at 450 DEG F. in a nitrogen atmosphere, and the product hydrolysed with steam at 300 DEG -400 DEG F.; the product is reacted with (1) ethylene diamine and boric acid; (2) a propylene diamine having a side chain derived from tallow fatty acid, and boric acid; (3) ethanolamine and boric acid; (4) triethanolamine and boric acid; (5) ethylenediamine and borophosphoric acid; (6) diethylenetriamine and difluoroboric acid; (7) triethylenetetramine and difluoroboric acid; (8) the amine used in (2) and difluoroboric acid.  Specification 355,214 is referred to.ALSO:A boron and nitrogen-containing phosphorsulphurized product is made by reacting a phosphorus sulphide with a hydrocarbon, hydrolyzing the resulting phosphorus sulphide-hydrocarbon reaction product and reacting the hydrolyzed product with an aliphatic amine compound selected from boric acid, boric acid anhydride, boric acid esters, borophosphoric acid and fluoroboric acids, such as difluoroboric acid and monofluoroboric acid.  The hydrocarbon used may be an olefin, paraffin, cycloparaffin, aromatic hydrocarbon, mono-olefine polymer, copolymer, graft polymer or petroleum fractions and the hydrolysed phosphorus sulphidehydrocarbon reaction product may be prepared by any known method.  This product is neutralized with up to 1,1 moles of amine compound per mole of acid phosphorus in the product and the resulting neutralized product is reacted with from 1 to 3 moles, based on boron, of the boron compound per mole of the resulting neutralized product. The reaction with the boron compound may be carried out in the presence of a solvent for the boron compound, the reactants heated to a temperature above 100 DEG C. and water stripped from the reaction mixture. Any solvent used is then stripped in a vacuum or by passing nitrogen or other inert gasses through the mixture at a temperature sufficient to strip the solvent out. The product may be used as a lubricating oil additive. Specification 355,214 is referred to.