A process for preparing 4-aminodiphenylamine (4-ADPA) including the steps of coupling aniline with nitrobenzene in the presence of a suitable base, hydrogenation of the coupled product, separation of the organic and aqueous phases, further hydrogenation of the separated organic phase under suitable condition to redu...

A process for preparing 4 aminodiphenylamine (4 ADPA) comprising steps of coupling of aniline with nitrobenzene in presence of a suitable base e.g. tetramethylammonium hydroxide (TMAH) hydrogenation of the coupling mass phase separation hydrogenation of azobenzene in the separated organic mass and fractional distill...

An efficient continuous manufacturing process for 4 aminodiphenylamine by coupling aniline with nitrobenzene in the presence of tetramethylammonium hydroxide (TMAH) as a base using flow reactors wherein base decomposition is considerably reduced by optimizing base quantity process conditions and process equipment. A...

The present invention relates to Rubber Composition with improved dispersion properties achieved through fillers in combination with coupling agent, wherein the Coupling agents with bifunctional motifs efficiently improve the dispersion of carbon black filler in the rubber compositions. The present invention also re...

The present invention relates to novel sulfur-olefin adduct as useful rubber cross-linking agent with better mixing performance in rubber & provide a vulcanized rubber composite with improved dynamic physical properties. The present invention further relates to a process for preparation of novel sulfur-olefin adduct...