BENZOTHIAZOL-2-YLAZO-PHENYL COMPOUND AS DYE, COMPOSITIONS INCLUDING DYE, AND METHOD OF DETERMINING DEGREE OF CURE OF SUCH COMPOSITIONS Russian patent published in 2018 - IPC C07D277/82 C09B29/33 

FIELD: chemistry.

SUBSTANCE: invention relates to a compound represented by formula (I), wherein R is hydrogen; X is alkylene containing up to 5 carbon atoms; Y is a bond, -O-C(O)-, -O-C(O)-NH-, or alkylene containing up to 5 carbon atoms and ending with –O-C(O)-; and Z is acrylate, methacrylate, acrylamide, methacrylamide, styryl or alkenyl with a terminal double bond having three carbon atoms. Compounds are intended for the preparation of a hardener composition, which also contains a free-radical polymerisation initiator and a diluent. Compounds of the invention are also used for the manufacture of a curable composition comprising a curable polymeric resin, and additionally a free-radical polymerisation initiator and a diluent. Invention relates to methods for indicating curing of a polymeric resin. (I).

EFFECT: inclusion of the compound of formula (I) eliminates the possibility of fading or washing of dye components from the cured system.

22 cl, 13 ex