NOVEL PHOTOINITIATORS Russian patent published in 2014 - IPC C07D335/16 C07D401/12 C07D409/12 C08K5/45 C09D11/10 

FIELD: chemistry.

SUBSTANCE: invention relates to a photoinitiator, a method for production and use thereof and a coating composition. The photoinitiator is a compound of formula: (PI-Sp)_n-BB (I), where PI is a thioxanthone group, optionally including additional substitutes in the Sp group; Sp is a spacer link selected from a group consisting of or , BB is a backbone chain link selected from a group consisting of

The method of producing the photoinitiator includes the following steps: (a) optionally substituted thioxanthone, containing at least one hydroxy group, reacts with epichlorohydrin or haloacetic acid ester; (b) the compound from step (a) reacts with the corresponding backbone chain link containing a functional group, or the compound from step (a) reacts with a compound containing a functional group, and the obtained intermediate then reacts with the corresponding backbone chain link; optionally (c) obtaining derivatives of the compounds from step (b). The photoinitiator is used to cure a coating composition, preferably printing ink containing a polymerisable component.

EFFECT: invention enables to obtain a photoinitiator with good curing activity, faint odour and good compatibility with other components of the composition.

10 cl, 1 tbl, 4 ex