Process for producing 3,5-di(alpha-methylbenzyl)salicylic acid derivative, and use of polyvalent-metal-modified product thereof as color developer
申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0470516A2
公开(公告)日:1992-02-12
A color-developing sheet using, as a color developer, polyvalent-metal-modified products of salicylic acid compounds composed mainly of a 3,5-di(a-methylbenzyl)salicylic acid derivative obtained by reacting a salicylic acid ester with an a-methylbenzyl halide in the presence of an acid catalyst and hydrolyzing the reaction product.
Said color-developing sheet has excellent color developability at low temperatures and gives a color of excellent water resistance.
一种使用水杨酸化合物的多价金属改性产物作为显色剂的显色薄片,该水杨酸化合物主要由 3,5-二(a-甲基苄基)水杨酸衍生物组成,水杨酸酯与 a-甲基苄基卤化物在酸催化剂存在下反应并水解反应产物而得。
所述显色片材在低温下具有极佳的显色性,并能提供耐水性极佳的颜色。