申请人:HERCULES INCORPORATED
公开号:EP0406812A2
公开(公告)日:1991-01-09
A process for making 2,3-dihydro-1,3-dialkyl-2,2-dialkyl perimidines, their use for preparing polyazo arylazo and poly(arylazo) dichroic dyes having a 2,3-dihydro perimidine substituent, and the use of such dyes in guest-host liquid crystal mixtures are disclosed.
本发明公开了一种 2,3-二氢-1,3-二烷基-2,2-二烷基过嘧啶的制备方法、其在制备具有 2,3-二氢过嘧啶取代基的多偶氮芳基偶氮和多(芳基偶氮)二色染料中的用途,以及这种染料在客主液晶混合物中的用途。