Patent ID: 9006156
Filing Date: 2015-04-14
Classification: C10M,C10N

Abstract:
1. A method for lubricating an automatic transmission, comprising supplying thereto: (a) an oil of lubricating viscosity and (b) a composition comprising a condensation product of a hydroxy-polycarboxylic acid or mixtures thereof or a reactive equivalent thereof, with an N,N-di(hydrocarbyl) alkylenediamine; wherein the condensation product comprises a material represented by or mixtures thereof; wherein each of R 1 , R 2 , R 3 , and R 4 is independently an alkyl group of 1 to about 22 carbon atoms, provided that the total number of carbon atoms in R 1 and R 2 is at least about 13 and the total number of carbon atoms in R 3 and R 4 is at least about 13.