Complex tolylene polurea grease composition and process

Details Complex tolylene polurea grease composition and process Complex tolylene polurea grease composition and process

1990-02-09

1991-04-30

Medley, Margaret B.

Compositions

Electrolytes for electrical devices

252 25, 252 515A, 252 515R, C10M 110

Patent

active

050116177

ABSTRACT:
Disclosed is complex tolylene polyurea-thickened grease containing less than 7 parts per million 2,4-diaminotoluene and a process for making said grease comprising reacting an isocyanate, a polyamine and monoamine with a major portion of a lubricating oil and thereafter adding an alkaline earth metal oxide or hydroxide and a carboxylic acid anhydride containing 2 to 20 carbon atoms to said mixture and thereafter milling said mixture to the consistency of grease.

REFERENCES:
patent: 3242210 (1966-03-01), Dreher
patent: 3243372 (1966-03-01), Dreher et al.
patent: 3846314 (1974-11-01), Dreher et al.
patent: 3846315 (1974-11-01), Stanton et al.
patent: 3920571 (1975-11-01), Crocker
patent: 4759859 (1988-07-01), Waynick
patent: 4787992 (1988-11-01), Waynick

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