| abstract |
The present invention relates to a process for coloration of a high molecular weight material by admixing said high molecular weight organic or inorganic material, preferably high molecular weight organic material, prior to processing with at least one compound of formula (I), where A1 and A2 are independently unsubstituted, monosubstituted, disubstituted, trisubstituted or tetrasubstituted o-C6-C18arylene. The invention further relates to compositions of matter comprising isoxindigo compounds and high molecular weight organic material. The invention also relates to processes for preparing the compound of said formula and also to novel isoxindigo compounds which can be symmetrical or asymmetrical or else have a bisisoxindigo structure. |