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发明授权
CN101638852B 一种匀染增深固色剂及其制备方法 失效 - 权利终止

一种匀染增深固色剂及其制备方法
摘要：
本发明公开了一种匀染增深固色剂及其制备方法，本发明提供的皮革匀染增深固色剂具有匀染、增深和固色作用的染色助剂，该助剂分子上含有-NR2、-NH2、-NHR、-COONa等基团，是一种具有两性结构的化合物。在碱性条件下分子带负电荷，对酸性染料的染色起到匀染作用；该助剂分子上的-NR2、-NH2、-NHR等助色基团和染料作用，能使颜色加深，起到增深作用；在酸性条件下-NR2、-NH2、-NHR等基团带正电荷，对酸性染料起到固定作用。本助剂是一种多功能产品，用于皮革染色可以起到匀染、增深和固色作用，可以简化制革工艺。
摘要（英）：

The invention discloses a leveling and deepening fixing agent and a preparation method thereof. The leather leveling and deepening fixing agent is a dyeing assistant with the functions of leveling, deepening and fixing colors, and an assistant molecule comprises the groups of -NR2, -NH2, -NHR, -COONa, and the like and is a compound with an amphoteric structure. Under an alkaline condition, the molecule carries negative charge and has a leveling function for dyeing acid dye, the auxochromic groups of -NR2, -NH2, -NHR, and the like on the assistant molecule act on the dye to deepen the color and play a deepening function. Under an acidic condition, the groups of -NR2, -NH2, -NHR, and the like have positive charge and play a fixing function for the acid dye. The assistant is a multifunctional product, can play the functions of leveling, deepening and fixing colors for dying leather and can simplify a leather preparing technology.

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