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91 条记录 (耗时 0.024 秒)

    Process for preparing polyurethanes from an organic diisocyanate ester
    3.
    发明授权
    Process for preparing polyurethanes from an organic diisocyanate ester 失效
    从有机二异氰酸酯制备聚氨酯的方法

    公开(公告)号：US4868268A

    公开(公告)日：1989-09-19

    申请号：US266557

    申请日：1988-11-03

    申请人： Hanns P. Muller ,  Roland Gipp

    发明人： Hanns P. Muller ,  Roland Gipp

    IPC分类号： C08G18/76 ,  C08G18/10 ,  C08G18/77 ,  C08G18/78 ,  C08G18/81 ,  C08L75/00 ,  C09K19/38 ,  G02F1/13

    CPC分类号： C09K19/3804 ,  C08G18/771 ,  C08G18/7856 ,  C08G18/7862 ,  C08G18/8125

    摘要： Novel polyurethanes are prepared by reacting(a) an organic diisocyanate of formula ##STR1## wherein M represents --CH.dbd.CH--; --N.dbd.N--; --CH.dbd.N--; ##STR2## or and where R.sub.1 through R.sub.4 may be the same or different and represent hydrogen, halogen, CN, CF.sub.3 or saturated aliphatic C.sub.1 -C.sub.12 alkyl residues which may be interrupted by ether hydrogen atoms with(b) compounds of molecular weights of from between 400 and 10,000 and which contain at least two active hydrogen atoms reactive toward isocyanate groups.

    摘要翻译： 通过使（a）式（IMAGE）的有机二异氰酸酯（其中M表示-CH = CH-）反应制备新的聚氨酯; -N = N- -CH = N- 或者其中R 1至R 4可以相同或不同，并且表示氢，卤素，CN，CF 3或可被醚氢原子间隔的饱和脂族C 1 -C 12烷基残基，（b）分子量为 在400和10,000之间，并且其含有至少两个对异氰酸酯基团反应的活性氢原子。

    Process for the preparation of 4-hydroxyphenyl 4-hydroxybenzoate and the use thereof
    4.
    发明授权
    Process for the preparation of 4-hydroxyphenyl 4-hydroxybenzoate and the use thereof 失效
    4-羟基苯甲酸4-羟基苯酯的制备方法及其用途

    公开(公告)号：US4855484A

    公开(公告)日：1989-08-08

    申请号：US64679

    申请日：1987-06-22

    申请人： Hanns P. Muller ,  Roland Gipp

    发明人： Hanns P. Muller ,  Roland Gipp

    IPC分类号： B01J27/02 ,  B01J21/02 ,  B01J27/00 ,  B01J31/00 ,  B01J31/02 ,  C07B61/00 ,  C07C67/08 ,  C07C69/84 ,  C07C69/88 ,  C08G64/00

    CPC分类号： C07C67/08 ,  C07C69/88

    摘要： A process for the preparation of 4-hydroxyphenyl 4-hydroxy-benzoate by esterification of hydroquinone and p-hydroxybenzoic acid is described, wherein an esterification catalyst is used and wherein the reaction is carried out in a reaction medium in which the reactants are substantially dispersed. The use of the compound, accessible by the above process in high yield and good industrial purity, for the preparation of linear polycarbonates or copolycarbonates is furthermore claimed.

    摘要翻译： 描述了通过对苯二酚和对羟基苯甲酸的酯化制备4-羟基苯甲酸4-羟基苯酯的方法，其中使用酯化催化剂，其中反应在其中反应物基本上分散的反应介质中进行 。 还要求使用通过上述方法可获得的高产率和良好工业纯度的化合物用于线性聚碳酸酯或共聚碳酸酯的制备。

    Aqueous solutions or dispersions of polyurethanes, a process for their preparation and their use in coating compositions
    7.
    发明授权
    Aqueous solutions or dispersions of polyurethanes, a process for their preparation and their use in coating compositions 失效
    聚氨酯的水溶液或分散体，其制备方法及其在涂料组合物中的用途

    公开(公告)号：US5041494A

    公开(公告)日：1991-08-20

    申请号：US264300

    申请日：1988-10-28

    申请人： Joachim Franke ,  Hanns P. Muller

    发明人： Joachim Franke ,  Hanns P. Muller

    IPC分类号： C08G18/00 ,  C08G18/08 ,  C08G18/10 ,  C08G18/28 ,  C08G18/38 ,  C08G18/83 ,  C08L75/00 ,  C08L75/04 ,  C09D175/00

    CPC分类号： C08G18/832 ,  C08G18/0814 ,  C08G18/10 ,  C08G18/283 ,  C08G18/289 ,  C08G18/3893

    摘要： The present invention is directed to aqueous solutions or dispersions of cationically modified polyurethanes, characterized in that the dissolved or dispersed polyurethanes(i) contain about 2 to 200 milliequivalents of incorporated ammonium groups per 100 g of solids content,(ii) contain 0 to about 25% by weight of ethylene oxide units within terminal or lateral polyether chains and(iii) contain at least 1.3% by weight, calculated as SiO.sub.3 (molecular weight=76), of built-in structural units corresponding to the formula ##STR1## wherein R', R" and R"' may be the same or different and represent hydrogen or alkyl groups containing 1 to 4 carbon atoms,the total quantity of hydrophilic structural units (i) and (ii) being sufficient to ensure the solubility or dispersibility of the polyurethanes in water and the solutions or dispersions having a pH value of 3 to 6. The present invention is also directed to a process for the preparation of these storage stable aqueous solutions or dispersions and to their use as coating compounds or for the preparation of coating compositions for any substrates.

    摘要翻译： 本发明涉及阳离子改性聚氨酯的水溶液或分散体，其特征在于溶解或分散的聚氨酯（i）每100g固体含量含有约2至200毫当量的并入铵基团，（ii）含有0至约 末端或侧面聚醚链中的25重量％的环氧乙烷单元和（iii）含有至少1.3重量％（以SiO 3计（分子量= 76）计算）的内置结构单元对应于式，其中 R'，R“和R”可以相同或不同，表示氢或含有1至4个碳原子的烷基，亲水结构单元（i）和（ii）的总量足以确保溶解度 或聚氨酯在水中的分散性以及pH值为3至6的溶液或分散体。本发明还涉及制备这些储存稳定的水溶液或分散体的方法 离子和它们作为涂料化合物的用途或用于制备用于任何底物的涂料组合物。