Preparation and use of sulphur-containing polyether-urethanes
    4.
    发明授权
    Preparation and use of sulphur-containing polyether-urethanes 失效
    含硫聚醚 - 聚氨酯的制备和使用

    公开(公告)号:US4666618A

    公开(公告)日:1987-05-19

    申请号:US724373

    申请日:1985-04-18

    摘要: The new sulphur-containing polyether-urethanes are prepared by a polyaddition reaction of aromatic, cycloaliphatic and/or aliphatic polyisocyanates with(a) at least one aliphatic dialcohol containing a sulphur bridge, of the formula ##STR1## in which R.sup.1 to R.sup.8 are identical or different and denote hydrogen or an alkyl radical with 1 to 10 carbon atoms andx denotes the average number of sulphur atoms in the range from 1.5 to 4, if appropriate in the presence of(b) a polyethylene glycol and/or(c) a dialcohol which carries at least one anionic group and/or at least one diamine which carries an anionic group, and, if appropriate,(d) other cycloaliphatic, araliphatic or heterocyclic dialcohols and/or aromatic, cycloaliphatic or aliphatic diamines.The compounds can be used as anti-wear agents in aqueous hydraulic fluids and cooling lubricant concentrates.

    摘要翻译: 新的含硫聚醚 - 聚氨酯通过芳族,脂环族和/或脂族多异氰酸酯与(a)含有硫桥的至少一种脂族二元醇(其中R1至R8相同)的加成反应制备 或不同的并且表示氢或具有1至10个碳原子的烷基,x表示在(b)聚乙二醇和/或(c)的存在下适当时的1.5至4的硫原子的平均数) 携带至少一个阴离子基团的二醇和/或携带阴离子基团的至少一种二胺,以及(如果合适的话)(d)其它脂环族,芳脂族或杂环二元醇和/或芳族,脂环族或脂族二胺的二胺。 该化合物可用作水性液压油和冷却润滑剂浓缩物中的抗磨剂。