Process for the solubilization of mercaptobenzothiazole in a lubricating oil composition

Patent · Tue May 20 00:00:00 EDT 1986

OSTI ID:5670678

Ryer, J; Shih, C K; Williams, J E

A process is described for preparing an amine salt solution of a substituted or unsubstituted mercaptobenzothiazole solubilized at room temperature and adapted for compatible admixture into a lubricating oil composition. The process consists of: (1) reacting to form the salt, in the absence of an oxidizing agent, at least one mercaptobenzothiazole represented by the structural formula; wherein each R independently represents hydrogen, alkyl, aryl, cycloalkyl, aralkyl or alkaryl; with at least one amine represented by the structural formula; NR/sub 1/R/sub 2/R/sub 3/ wherein R/sub 1/ and R/sub 2/ independently represent hydrogen of about C/sub 2/ to C/sub 20/ alkyl, and R/sub 3/ represents alkyl or alkenyl having from about 6 to about 25 carbon atoms; and wherein the molar ratio at which the amine and mercaptobenzothiazole are reacted is from about 1.1:1 to about 0.7:1; (2) admixing the amine salt prepared in accordance with step (1) with at least one solvent in a manner and under conditions sufficient to render the salt soluble in the solvent at room temperature, the solvent being represented by the structural formula; wherein n represents a number of from 1 to 3, and each R/sub 8/ independently is selected from the group consisting of alkyl, cycloalkyl, aryl, aralkyl and alkaryl.

• Assignee: Exxon Research and Engineering Co., Florham Park, NJ
• Patent Number(s): US 4589991
• OSTI ID: 5670678
• Resource Relation: Patent File Date: Filed date 1 Jul 1985
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
BENZOTHIAZOLES
DISSOLUTION
LUBRICATING OILS
CHEMICAL PREPARATION
AMBIENT TEMPERATURE
AMINES
CARBON
CHEMICAL COMPOSITION
HYDROGEN
MIXTURES
QUANTITY RATIO
SOLUBILITY
SOLVENTS
AZOLES
DISPERSIONS
ELEMENTS
HETEROCYCLIC COMPOUNDS
LUBRICANTS
NONMETALS
OILS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
SYNTHESIS
THIAZOLES
020400* - Petroleum- Processing