Lubricant Additives

118 Lubricant Additives: Chemistry and Applications

163. U.S. Patent 3,658,706, Ethyl Corp., 1972.


164. Goode, M.J., W.D. Phillips. Triaryl phosphate ester hydraulic fl uids-A reassessment of their toxicity and
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166. 
     


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169. Du rad® 310M, Great Lakes Chemical Corp., May 2002.


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APPENDIX A: EARLY PATENT LITERATURE ON PHOSPHORUS-

CONTAINING COMPOUNDS

NEUTRAL PHOSPHATES

U.S. Patent 2,723,237, Texas Oil Co.

NEUTRAL PHOSPHITES

As AW/EP Additives
British Patent 1,052,751, British Petroleum (chlorethyl phosphite and a chlorparaffi n)
British Patent 1,164,565, Mobil Oil Corp. (alkyl or alkenyl phosphite and a fatty acid ester)
British Patent 1,224,060, Esso Research and Engineering Co.
U.S. Patent 2,325,076, Atlantic Refi ning Co.
U.S. Patent 2,758,091, Shell Development Co. (haloalkyl or haloalkarylphosphites)
U.S. Patent 3,318,810, Gulf Research & Development Co. (phosphites and molybdenum compounds)

As Antioxidants

U.S. Patent 2,326,140, Atlantic Refi ning Co.
U.S. Patent 2,796,400, C.C. Wakefi eld & Co.

ACID PHOSPHATES/PHOSPHITES

British Patent 1,105,965, British Petroleum Co Ltd. (acid hydrocarbyl phosphite and phosphates or thiophos-
phates or phosphoramidates)