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    Polyurethanes containing perfluoroalkyl groups and a process for their production
    4.
    发明授权
    Polyurethanes containing perfluoroalkyl groups and a process for their production 失效
    含有全氟烷基的聚氨酯及其制备方法

    公开(公告)号：US4540765A

    公开(公告)日：1985-09-10

    申请号：US612095

    申请日：1984-05-18

    申请人： Ulrich Koemm ,  Klaus Geisler

    发明人： Ulrich Koemm ,  Klaus Geisler

    IPC分类号： D06M15/564 ,  B05D5/00 ,  C07C271/62 ,  C07C311/09 ,  C08G18/00 ,  C08G18/10 ,  C08G18/32 ,  C08G18/38 ,  C08G18/65 ,  C08G18/80 ,  C09D175/00 ,  C09D175/04 ,  D06M15/576

    CPC分类号： D06M15/576 ,  C08G18/10 ,  C08G18/3812 ,  C08G18/3825 ,  C08G18/3861 ,  C08G18/8077

    摘要： To render surfaces, such as of textile fabrics and fibers, repellent to oil and/or water, they are treated with novel polyurethanes containing perfluoroalkyl ligands and having as recurring structural units ##STR1## with chain ends of the formula--YA.sub.m'in whichX, Y and Z each independently is the skeletal radical of an aliphatic or aromatic di- or polyisocyanate,R.sub.F is a difunctional radical containing at least one perfluoroalkyl ligand, the perfluoroalkyl chain comprising 3 to 30 carbon atoms and, in addition to fluorine atoms, containing at most one hydrogen or chlorine atom to two carbon atoms; and the perfluoroalkyl chain optionally being interrupted by oxygen,n is the number of isocyanate groups on the skeletal radical X and is an integer from 2 to 25,A is an isocyanate group protected by a blocking agent,m is the number of blocked isocyanate groups A on the skeletal radical Y and is an integer from 1 to 5,E is O, S or --NR'--,R' is H, alkyl or aryl,R is the radical of a compound containing at least two alcohol, amine and/or thiol groups,a and b are the number of --OH, --NR'H or --SH functions in the alcohols, amines or thiols R(EH).sub.(a+b) used and each is an integer from 0 to 10, andp is the number of isocyanate groups on the skeletal radical Z and is an integer from 0 to 25.Subsequent heating removes the end blocks and effects chemical fixation on the surface.

    摘要翻译： 为了使诸如织物和纤维之类的表面，对油和/或水的排斥性，它们用新的含有全氟烷基配体的聚氨酯处理，并具有作为重复的结构单元和/或具有式 -YAm'，其中X，Y和Z各自独立地是脂族或芳族二异氰酸酯或多异氰酸酯的骨架基团，RF是含有至少一个全氟烷基配体的双官能基团，全氟烷基链包含3至30个碳原子，并且在 含有至多一个氢原子或氯原子至两个碳原子的氟原子; 任选被氧中断的全氟烷基链，n是骨架基X上的异氰酸酯基数，为2〜25的整数，A为被封端剂保护的异氰酸酯基，m为封端异氰酸酯基的数 A为骨架基团Y，为1至5的整数，E为O，S或-NR'-，R'为H，烷基或芳基，R为含有至少两个醇的化合物的基团，胺和 /或硫醇基团，a和b是使用的醇，胺或硫醇R（EH）（a + b）中的-OH，-NR'H或-SH官能团数，并且各自为0至10的整数， 并且p是骨架基团Z上的异氰酸酯基团的数目，并且是0至25的整数。随后的加热除去末端嵌段并且对表面进行化学固定。

    Aqueous Polyurethane Urea Dispersion
    6.
    发明公开
    Aqueous Polyurethane Urea Dispersion 审中-公开

    公开(公告)号：US20240034828A1

    公开(公告)日：2024-02-01

    申请号：US18265794

    申请日：2021-12-03

    申请人： Covestro Deutschland AG

    发明人： Limin Cheng ,  Qinglan Liu ,  Jinqi Li ,  Yingdan Zhu ,  Long Zhang

    IPC分类号： C08G18/08 ,  C08G18/48 ,  C08G18/38 ,  C08G18/34

    CPC分类号： C08G18/0866 ,  C08G18/0823 ,  C08G18/0828 ,  C08G18/485 ,  C08G18/3861 ,  C08G18/348 ,  C08G18/3821 ,  C08G2150/00 ,  C08G2170/00 ,  C08G2190/00

    摘要： The present invention relates to an aqueous polyurethane urea dispersion containing a polyurethane urea and a preparation process and use thereof, especially to the use in the field of coatings, adhesives or sealants, and the products obtained by coating, bonding or sealing with the polyurethane urea dispersion. The polyurethane urea of the aqueous polyurethane urea dispersion containing the polyurethane urea is obtained by the reaction of a system including the following components: a mixture of isocyanates, a polymer polyol, a monofunctional nonionic hydrophilic compound and a potentially anionic or anionic hydrophilic compound; said aqueous polyurethane urea dispersion has a viscosity of 5 s-18 s; relative to the total weight of said aqueous polyurethane urea dispersion, the amount of said polyurethane urea is 30 wt %-50 wt %. The aqueous polyurethane urea dispersion of the present invention has good compatibility with various organic solvents.