Isoxindigos useful as colorants and preparation thereof
申请人:CIBA Specialty Chemicals Corp.
公开号:US06323267B1
公开(公告)日:2001-11-27
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 the formula:
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 the formula (I) and also to novel isoxindigo compounds which can be symmetrical or asymmetrical or else have a bisisoxindigo structure.
Dibenzonaphthyrone of formula (I)
wherein A1 and A2 independently of each other are unsubstituted or mono- to tetra-substituted o-C6-C18arylene, with the proviso that formula (I) does not represent a dibenzonaphthyrone of the formula
The invention further relates to processes for the preparation thereof, to the use thereof for colouring/pigmenting high-molecular-weight organic material and to substance compositions comprising dibenzonaphthyrones.