Process for preparing trithianes and phosphorus acid and/or thiophosphorus acid derivatives

• Main Author: SOWERBY; ROGER L
• Format: Patent
• Language: English
• Published: 20.10.1998
• Edition: 6
• Subjects: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; CHEMISTRY; FUELS; HETEROCYCLIC COMPOUNDS; INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS; LUBRICANTS; LUBRICATING COMPOSITIONS; METALLURGY; ORGANIC CHEMISTRY; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION

Trithiane and phosphorus and/or thiophosphorus acid derivatives are described which are useful as extreme pressure compositions. The process comprises a reaction product obtained by reacting (A) an aldehyde of the structure wherein R is a hydrocarbyl group containing from 1 to about 18 carbon atoms with (B) a phosphorus acid of the structure (I) wherein R2 and R3 are each independently a hydrocarbyl group containing from 1 to about 30 carbon atoms, X1 and X2 are each independently oxygen or sulfur and n is independently zero or one in the presence of a lubricating base oil. A neutralizing agent, component (C), may be reacted with the phosphorus acid and/or thiophosphorus acid intermediate formed by the reaction of components (A) and (B).