会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 22. 发明申请
    • DYED LEATHER AND METHOD FOR DYEING TANNED LEATHER
    • DYED皮革和用于染色皮革的方法
    • WO02020897A1
    • 2002-03-14
    • PCT/EP2001/009840
    • 2001-08-27
    • C14C9/02D06P1/00D06P1/645D06P1/651D06P1/673D06P3/32
    • C14C9/02D06P1/0032D06P1/008D06P1/645D06P1/65112D06P1/65131D06P1/673D06P3/32
    • Tanned leather is (a) pretreated in an aqueous and alkaline medium either with ammonia, primary amines or a mixture of ammonia and primary amines and then with a polyfunctional organic compound containing at least one aldehyde group as a functional group, or (b) in an aqueous and acidic medium with a polyfunctional organic compound and then ammonia, primary amines or a mixture of ammonia and primary amines, and (c) then dyed in an aqueous and alkaline medium with a water-soluble dye containing at least one functional group which is capable of reacting with one of the functional groups of the organic compound, forming a covalent bond. A tanned and dyed leather is obtainable with a high colour intensity, outstanding wet fastness and excellent grain tightness, wherein the dye is permanently and covalently bonded to the leather via a bridging group, preferably in the region of the surface, and the bridging group is essentially bonded to the leather via -N=CH- groups.
    • 鞣革是(a)在水性和碱性介质中用氨,伯胺或氨和伯胺的混合物预处理,然后与含有至少一个醛基作为官能团的多官能有机化合物预处理,或(b)在 具有多官能有机化合物,然后是氨,伯胺或氨和伯胺的混合物的水性和酸性介质,和(c)然后在水性和碱性介质中用含有至少一个官能团的水溶性染料染色, 能够与有机化合物的官能团之一反应,形成共价键。 可以获得具有高颜色强度,优异的耐湿牢度和优异的颗粒紧密性的鞣制和染色的皮革,其中染料通过桥连基团优选在表面区域永久地共价结合到皮革上,并且桥接基团是 通过-N = CH-基团基本上与皮革结合。