Ashless Phosphorus-Containing Lubricating Oil Additives 119
British Patent 1,153,161, Nippon Oil Co.
U.S. Patent 2,005,619, E. I. du Pont de Nemours
U.S. Patent 2,642,722, Tide Water Oil Co.
French Patent 797,449, E.I. du Pont de Nemours
PHOSPHONATES
British Patent 823,008, Esso Research and Engineering Co. (dicarboxylic acid and either a haloalkane phos-
phonate, a haloalkyl phosphate or phosphite and optionally a neutral alkyl or aryl phosphate)
British Patent 884,697, Shell Research Ltd. (dialkenyl phosphonates)
British Patent 899,101, British Petroleum Co. (amino phosphonates)
British Patent 993,741, Rohm and Haas Co. (aminoalkane phosphonates)
British Patent 1,083,313, British Petroleum Co. (amino phosphonates)
British Patent 1,247,541, Mobil Oil Corp. (Dialkyl-n-alkylphosphonate or alkylammonium salts of
dialkylphosphonates)
U.S. Patent 2,996,452, US Sec of Army (di-(2-ethylhexyl) lauroxyethyl phosphonate)
U.S. Patent 3,329,742, Mobil Oil Corp. (diaryl phosphonates)
U.S. Patent 3,600,470, Swift & Co. (hydroxy or alkoxy phosphonates and their amine salts)
U.S. Patent 3,696,036, Mobil Oil Corp. (tetraoctyl-(dimethylamino) methylene diphosphonate)
U.S. Patent 3,702,824, Texaco Inc. (hydroxyalkylalkane phosphonate)
ALKYL- AND ARYLPOLYETHYLENEOXY-PHOSPHORUS COMPOUNDS
U.S. Patent 2,372,244, Standard Oil Dev. Co.
AMINE SALTS
British Patent 705,308, Bataafsche Petroleum Maatschappij (substituted monobasic phosphonic acid and
amine salts thereof)
British Patent 978,354, Shell International Research (alkali metal-amine salt of a halohydrocarbyl phosphonic
acid)
British Patent 1,002,718, Shell International Research (alkylamine salt of diaryl acid phosphate)
British Patent 1,199,015, British Petroleum Co. Ltd. (quaternary ammonium salts of dialkyl phosphates)
British Patent 1,230,045, Esso Research and Engineering Co. (quaternary ammonium salts of alkyl phos-
phonic and phosphonic acids)
British Patent 1,266,214, Esso Research and Engineering Co. (neutral phosphate and a neutral alkylamine
hydrocarbyl phosphate)
British Patent 1,302,894, Castrol Ltd. (tertiary amine phosphonates)
British Patent 1,331,647, Esso Research and Engineering Co. (quaternary ammonium phosphonates)
U.S. Patent 1,936,533, E. I. du Pont de Nemours. (triethanolamine salts)
U.S. Patent 3,553,131, Mobil Oil Corp. (tertiary amine phosphonate salts)
U.S. Patent 3,668,237, Universal Oil Products Co. (tertiary amine salts of polycarboxylic acid esters of
bis(hydroxyalkyl)-phosphinic acid)
PHYSICAL MIXTURES OF PHOSPHORUS AND SULFUR AND CHLORINE COMPOUNDS
British Patent 706,566, Bataafsche Petroleum Maatschappij (a phosphorus compound, e.g., a trialkyl phos-
phate, a glycidyl either and a disulphide)
British Patent 797,166, Esso Research and Engineering Co. (TCP and a metal soap of a sulphonic acid)
British Patent 841,788, C.C. Wakefi eld & Co. Ltd. (chlorinated hydrocarbon, a disulphide, and a dialkyl
phosphite)
British Patent 967,760, The Distillers Co. Ltd. (disulphides, chlorinated wax, and a haloalkyl ester of an oxy-
acid of phosphorus)
British Patent 872,899, Esso Research and Engineering Co. (trialkyl phosphates and chlorinated benzene)
British Patent 1,222,320, Mobil Oil Corp. (diorganophosphonate and a sulphurized hydrocarbon or sulphu-
rized fat)