Color-developing compositions and their use
    20.
    发明授权
    Color-developing compositions and their use 失效
    显色组合物及其用途

    公开(公告)号:US5447901A

    公开(公告)日:1995-09-05

    申请号:US297525

    申请日:1994-08-26

    摘要: A color-developing composition comprises a multi-valent-metal-modified salicylic acid resin (Resin A) and a polycondensation resin (resin B) at a weight ratio of 90-30 to 10-70. Resin A is composed of 5-35 mole % of a structural unit (I) and 65-95 mole % of at least one structural unit (II) or 65-95 mole % of a coupled structural unit of at least one unit (II) and at least one unit (III) and has a weight-average molecular weight of 350-5,000. Resin B is composed of the unit (II) and/or the unit (III) and has a weight-average molecular weight of 350-5,000. ##STR1## wherein Z represents M/m, M being a metal ion of m valence and m being an integer; R.sub.1 and R.sub.2 represent H or a C.sub.1-12 alkyl, aralkyl, aryl or cycloalkyl group; R.sub.3 and R.sub.6 represent H or a C.sub.1-4 alkyl group; and R.sub.4 and R.sub.5 represent H or CH.sub.3.

    摘要翻译: 显色组合物包含重量比为90-30至10-70的多价金属改性水杨酸树脂(树脂A)和缩聚树脂(树脂B)。 树脂A由5-35摩尔%的结构单元(I)和65-95摩尔%的至少一种结构单元(II)或65-95摩尔%的至少一个单元(II)的偶联结构单元组成 )和至少一种单元(I​​II),并且其重均分子量为350-5,000。 树脂B由单元(II)和/或单元(III)组成,重均分子量为350-5,000。 (III)其中Z表示M / m,M是m价金属离子,m为整数; R1和R2表示H或C1-12烷基,芳烷基,芳基或环烷基; R3和R6表示H或C1-4烷基; R4和R5代表H或CH3。