The invention relates to an improved process for the manufacture of bis-resorcinyl triazines of formula (I) wherein R1 is a C1C18alkyl group or C2-C18alkenyl group as well as the respective alkyl substituted bis-resorcinyl derivatives of formula (II) wherein R1 is a C1-C18alkyl group or C2-C18alkenyl group and R2 and R3 are independently of each other a C1-C18alkyl group or a C2-C18alkenyl group.
本发明涉及一种改进的制备式(I)的双
间苯二酚三嗪的方法,其中R1是C1-C18烷基或C2-C18烯基,以及式(II)的相应烷基取代的双
间苯二酚衍
生物,其中R1是C1-C18烷基或C2-C18烯基,R2和R3分别是C1-C18烷基或C2-C18烯基。