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1. 发明授权

US4187074A Water-soluble cationic oligourethane resins and the use thereof for the treatment of pelts or leather 失效
标题翻译：水溶性阳离子低聚氨酯树脂及其用于治疗皮毛或皮革的用途
公开(公告)号：US4187074A
公开(公告)日：1980-02-05
申请号：US934775
申请日：1978-08-18
申请人： Harro Traubel , Dieter Dieterich , Helga Heinze
发明人： Harro Traubel , Dieter Dieterich , Helga Heinze
IPC分类号： C08G18/00 , C08G18/08 , C08G18/66 , C08G18/84 , C14C3/18 , C14C3/28 , D06P5/00
CPC分类号： C08G18/84 , C08G18/0814 , C14C3/18
摘要： This invention relates to water-soluble, cationic hydrophilic oligourethanes free from isocyanate groups and containing methylol groups and to the use thereof for the tanning, pre-tanning or re-tanning of pelts or pre-tanned leather and as dyeing auxiliaries.
摘要翻译：本发明涉及不含异氰酸酯基团并含有羟甲基的水溶性阳离子亲水性低聚氨酯，以及其用于鞣制，预鞣制或再鞣制皮革或预鞣制皮革和染色助剂的用途。

2. 发明授权

US4126413A Tanning with carboxylic acid carrying ester, urethane and/or amide group 失效
标题翻译：用羧酸进行鞣制，酯，氨基甲酸酯和/或酰胺基
公开(公告)号：US4126413A
公开(公告)日：1978-11-21
申请号：US802101
申请日：1977-05-31
申请人： Harro Traubel , Helga Heinze
发明人： Harro Traubel , Helga Heinze
IPC分类号： C14C3/06 , C14C3/08
CPC分类号： C14C3/06 , C14C3/08
摘要： In the tanning or re-tanning of a hide with a tanning composition comprising a tanning-active substance and at least one of a Cr(III) salt, a dicarboxylic acid, a dicarboxylic acid salt, an emulsifier and an acid-binding agent, the improvement which comprises employing as said tanning-active substance a carboxylic acid carrying at least one of an ester, urethane or amide group. Advantageously the agent has at least two carboxyl groups per molecule and a molecular weight of about 170 to 30,000, preferably 310 to 10,000. The products are softer and better through-tanned and there is maximum utilization of chromium, thereby minimizing the waste disposal problem.
摘要翻译：在用鞣制活性物质和Cr（III）盐，二羧酸，二羧酸盐，乳化剂和酸结合剂中的至少一种的鞣制组合物的皮革的鞣制或再鞣制中，包括使用携带至少一种酯，氨基甲酸酯或酰胺基团的羧酸作为所述鞣制活性物质的改进。有利的是，该试剂每分子具有至少两个羧基，分子量为约170至30,000，优选310至10,000。产品更柔软，更好地通过鞣制，最大限度地利用铬，从而最大限度地减少废物处理的问题。

3. 发明授权

US4042321A Tanning of hides 失效
标题翻译：鞣制鞣制
公开(公告)号：US4042321A
公开(公告)日：1977-08-16
申请号：US573282
申请日：1975-04-29
申请人： Klaus Backer , Helga Heinze , Wolfhard Luck , Heinrich Spahrkas
发明人： Klaus Backer , Helga Heinze , Wolfhard Luck , Heinrich Spahrkas
IPC分类号： C14C20060101 , C14C3/06 , D01H1/241 , D01H1/30
CPC分类号： C14C3/06
摘要： In the chrome-tanning of hides to produce leather wherein a hide is pickled, pretanned with a chromium (III) salt, and full tanned with a tanning mixture containing a chromium (III) salt, an acid-binding agent and a polycarboxylic acid or salt thereof, the improvement which comprises employing as said polycarboxylic acid or salt thereof at least 1.6 moles per mole of Cr.sub.2 O.sub.3 in the chromium (III) salt employed for full tanning of an aliphatic dicarboxylic acid of 4 to 6 carbon atoms or an aromatic dicarboxylic or tricarboxylic acid containing 8 to 13 carbon atoms or a salt thereof, the total quantity of Cr.sub.2 O.sub.3 employed in pretanning and full tanning ranging from 1.2 to 2% by weight of the hide, full tanning being carried out with up to 100% of the tanning liquor based on the weight of the hide to a final pH of the liquor of at least 3.6. Advantageously, a powder composition comprising additional chromium (III) salt, polycarboxylic acid or salt and acid-binding agent, preferably dolomite, is added after pretanning.
摘要翻译：在生产皮革的皮革的鞣制中，其中皮革被酸洗，用铬（III）盐预处理，并用含有铬（III）盐，酸结合剂和多元羧酸的鞣制混合物全部鞣制，或其改进之处在于，在用于完全鞣制4至6个碳原子的脂族二羧酸或芳族二羧酸的铬（III）盐中使用至少1.6摩尔/摩尔Cr 2 O 3作为所述多元羧酸或其盐，或含有8〜13个碳原子的三羧酸或其盐，用于预鞣制和全鞣制的Cr 2 O 3的总量为皮革的1.2-2重量％，全鞣制最多100％的鞣制液基于皮革的重量至酒的最终pH至少为3.6。有利的是，在预烘烤后加入包含另外的铬（III）盐，多元羧酸或盐和酸结合剂，优选白云石的粉末组合物。

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