Abstract: Disclosed is a pigment composition comprising a metal complex of azo compound of formula 1 containing at least one pyrimidine or a pyrimidine derivative. The pigment composition exhibits improved color characteristics, improved stability and easy dispersion.

Abstract: The present invention provides ?-hydroxy benzeneacetic acid derivatives of the formula as defined in the specification which is a precursor indispensable for synthesis of compounds having two 5-membered lactone rings fused to central cyclohexa-1,4-diene nucleus, and a process of easily preparing the same. According to the preparation process of the present invention, the ?-hydroxy benzeneacetic acid derivative can be readily prepared at high purity and yield without using toxic materials or producing toxic by-products. Some novel compounds, synthesized by using such a ?-hydroxy benzeneacetic acid derivative, have excellent fastness properties, dye fixing rate and leveling property to general synthetic fiber materials such as polyester fibers and their blends with other fibers, especially to micro fibers, and also can be used as a coloring agent for plastic resins, color tonors, color filters, etc.

Abstract: The present writing relates to a novel fiber-reactive dye of the formula wherein R11, D, R0, X and Z are as defined in the specification. The novel dye according to the present writing can be used in dyeing and printing fibre materials, especially, cellulosic fibre materials by a general fixing method, and a good adsorbing/fixing rate and an excellent fastness to light and wet treatment.

Abstract: The invention relates to dicyclic metal complex formazan dye derivatives and processes for producing compositions and for using them in dyeing processes.