Direct alkylation of N-alkyl-N'-phenyl-p-phenylenediamine
申请人:Wang Jin-Yun
公开号:US20070173668A1
公开(公告)日:2007-07-26
A single-step process is disclosed for the ring alkylation of at least one N-alkyl-N′-phenyl-phenylenediamine with at least one olefin wherein the process comprises heating a mixture of the N-alkyl-N′-phenyl-phenylenediamine(s) and olefin(s) in the presence of a catalytic amount of at least one alkyl aluminum halide at a temperature of from about 50 to about 350° C. in a sealed vessel for from about one to about 30 hours.
Lubricating oil compositions for EGR equipped diesel engines and methods of lubrication
申请人:Infineum International Limited
公开号:EP1741772A2
公开(公告)日:2007-01-10
Soot induced kinematic viscosity increase of lubricating oil compositions for diesel engines, particularly heavy duty diesel engines, equipped with EGR systems, particularly EGR systems operating in a condensing mode, can be ameliorated by addition of a phenylenediamine compound.