申请人:Sumitomo Durez Company, Ltd.
公开号:US05034370A1
公开(公告)日:1991-07-23
A color developer for pressure-sensitive recording paper is produced by admising components comprising: (A) 100 parts by weight of a polyvalent metal salt of a co-condensation product of a substituted salicylic acid, an aromatic hydrocarbon and an aldehyde. Such a co-condensation product is obtained by reacting: (a) a substituted salicylic acid, (b) one or more aromatic hydrocarbons having 4 to 9 carbon atoms, and (c) an aldehyde of 1 to 8 carbon atoms, in the presence of an acidic catalyst; and (B) 5 to 200 parts by weight of one or more members selected from the group consisting of petroleum resins, terpene resins, modified terpene resins, coumaarone resins and modified coumarone resins. The color developer is excellent in color density, resistance to yellow staining, fastness to light of color images and resistance to fading in water of color images, and in addition is capable of forming color images at a markedly increased speed.
一种用于压敏记录纸的色素显影剂,由以下组分制备而成:(A)100份重量的多价金属盐,其为取代水杨酸、芳香族碳氢化合物和醛的共缩聚产物。这样的共缩聚产物是通过在酸性催化剂存在下反应以下物质得到的:(a)取代水杨酸,(b)一个或多个具有4至9个碳原子的芳香族碳氢化合物,和(c)1至8个碳原子的醛;以及(B)5至200份重量的石油树脂、萜烯树脂、改性萜烯树脂、香豆素树脂和改性香豆素树脂中的一种或多种。该色素显影剂具有优异的色密度、抗黄染性、彩色图像的耐光性和彩色图像在水中的耐褪色性,并且能够以明显增加的速度形成彩色图像。