Patent ID: 9068093
Filing Date: 2015-06-30
Classification: C09D

Abstract:
1. A process for modifying the surface of a carbon black comprising contacting said carbon black with a conjugated diimine compound, wherein the conjugated diimine compound is obtained by oxidizing a p-phenylenediamine to form a quinonediimine compound with an oxidant which comprises an alkali- or alkaline earth-hypochlorite, -persulfate, -ferricyanide, -percarbonate, -perborate, -peroxymonosulfate or -permanganate; hydrogen peroxide or a salt thereof; or an aliphatic or aromatic organic peracid or a salt thereof and wherein the p-phenylenediamine is represented by the following structure: wherein R n represents an integer from 1 to 4; R one of R