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91 条记录 (耗时 0.026 秒)

    Process for the preparation of mixed trimers from organic isocyanates, the mixed trimers obtained according to the process and the use thereof for the production of polyurethanes
    62.
    发明授权
    Process for the preparation of mixed trimers from organic isocyanates, the mixed trimers obtained according to the process and the use thereof for the production of polyurethanes 失效
    从有机异氰酸酯制备混合三聚物的方法，根据该方法获得的混合三聚物及其在生产聚氨酯中的用途

    公开(公告)号：US4518761A

    公开(公告)日：1985-05-21

    申请号：US439086

    申请日：1982-11-04

    申请人： Roland Richter ,  Hanns P. Muller ,  Kuno Wagner ,  Bernd Riberi ,  Jurg Frohlich

    发明人： Roland Richter ,  Hanns P. Muller ,  Kuno Wagner ,  Bernd Riberi ,  Jurg Frohlich

    IPC分类号： C07D251/34 ,  C08G18/00 ,  C08G18/79 ,  C08G18/70

    CPC分类号： C07D251/34 ,  C08G18/791 ,  Y10T428/22

    摘要： The present invention is directed to a new process for the preparation of mixed trimers by at least partly trimerizing the isocyanate groups of at least two organic isocyanates of a reactivity which differs in the sense of the trimerization reaction, in the presence of trimerization catalysts and optionally interrupting the trimerization reaction at the respectively desired degree of trimerization, in which process the less reactive isocyanate component is introduced, polymerization is then commenced in the presence of the catalyst with the trimerization of at least 0.1% of the isocyanate groups and the more reactive isocyanate component is finally metered into the reaction mixture thus obtained; the mixed trimers obtained according to this process; and the use of the mixed trimers having free isocyanate groups obtained by this process, optionally in a form blocked by blocking agents for organic polyisocyanates, as a starting material for the production of polyurethane plastics materials.

    摘要翻译： 本发明涉及一种新的制备混合三聚体的方法，该方法是在三聚催化剂存在下，至少部分地将三聚反应意义上的至少两种有机异氰酸酯的反应性的异氰酸酯基团三聚，其反应性不同， 在分别期望的三聚程度下中断三聚反应，其中引入反应活性较低的异氰酸酯组分较少，然后在催化剂存在下开始聚合，三聚化至少为0.1％的异氰酸酯基团，反应活性较高的异氰酸酯 将组分最终计量加入由此获得的反应混合物中; 根据该方法得到的混合三聚物; 以及使用通过该方法获得的具有游离异氰酸酯基团的混合三聚体，任选地以用于有机聚异氰酸酯的封闭剂封闭的形式作为用于制备聚氨酯塑料材料的起始材料。

    Polyurethane foams and elastomers prepared from low molecular weight polyhydroxyl compounds
    65.
    发明授权
    Polyurethane foams and elastomers prepared from low molecular weight polyhydroxyl compounds 失效
    由低分子量多羟基化合物制备的聚氨酯泡沫和弹性体

    公开(公告)号：US4205138A

    公开(公告)日：1980-05-27

    申请号：US38033

    申请日：1979-05-10

    申请人： Hanns P. Muller ,  Kuno Wagner

    发明人： Hanns P. Muller ,  Kuno Wagner

    IPC分类号： C07C29/14 ,  C07C29/141 ,  C07C29/143 ,  C07C29/145 ,  C07C45/00 ,  C07C45/71 ,  C07C45/72 ,  C07C45/75 ,  C07H3/02 ,  C07H3/04 ,  C08G18/32 ,  C08G18/42 ,  C08G18/48 ,  C08G18/14

    CPC分类号： C08G18/4829 ,  C07C29/14 ,  C07C29/141 ,  C07C29/143 ,  C07C29/145 ,  C07C45/00 ,  C07C45/71 ,  C07C45/72 ,  C07C45/75 ,  C07H3/02 ,  C07H3/04 ,  C08G18/3209 ,  C08G18/4297

    摘要： This invention relates to an improved process for the production of a mixture of low molecular weight polyhydric alcohols, hydroxy aldehydes and hydroxy ketones by condensing formaldehyde hydrate in the presence of calcium hydroxide as catalyst and in the presence of compounds capable of enediol formation as co-catalyst. A formaldehyde-containing enediol formation as co-catalyst. A formaldehyde containing solution of the co-catalyst in water and, optionally, low molecular weight monohydric or polyhydric alcohols and/or relatively high molecular weight polyhydroxyl compounds is adjusted to a pH value of from 9 to 12, preferably from 9 to 10, by the addition of calcium hydroxide at a temperature of from 80.degree. to 110.degree. C., preferably from 90.degree. to 105.degree. C., so that condensation of the formaldehyde hydrate is initiated. An aqueous formalin solution and/or paraformaldehyde dispersion containing from 20 to 65%, by weight, of formaldehyde and calcium hydroxide are then introduced in such a quantity that the reaction mixture is maintained at a pH value of from 7.5 to 9.5, preferably from 8 to 9, at a temperature of from 80.degree. to 110.degree. C., preferably from 90.degree. to 105.degree. C. The concentration of formaldehyde is maintained at from 0.5 to 10%, by weight, preferably from 1.2 to 6%, by weight, based on the reaction mixture as a whole, throughout the condensation reaction. Finally, the residual quantity of formaldehyde, amounting to from 0.5 to 10%, by weight, is optionally removed by further condensation at pH values below 7 or by reaction with other compounds that are reactive with formaldehyde hydrate.

    摘要翻译： 本发明涉及通过在氢氧化钙作为催化剂的存在下将甲醛水合物冷凝并且在能够形成烯二醇的化合物的存在下，通过将甲醛水合物冷凝而生成低分子量多元醇，羟基醛和羟基酮的混合物的改进方法， 催化剂。 含甲醛的烯二醇形成作为助催化剂。 将辅助催化剂在水和任选的低分子量一元醇或多元醇和/或相对高分子量的多羟基化合物中的含甲醛溶液的pH值调节为9至12，优选9至10，通过 在80至110℃，优选90至105℃的温度下加入氢氧化钙，从而开始甲醛水合物的冷凝。 然后将含有20至65重量％甲醛和氢氧化钙的福尔马林溶液和/或多聚甲醛分散体的量以使得反应混合物的pH值保持在7.5至9.5，优选8 至9℃，温度为80℃至110℃，优选90℃至105℃。甲醛的浓度保持在0.5至10重量％，优选为1.2至6重量％ ，基于反应混合物作为整体，在整个缩合反应中。 最后，通过在pH值低于7的情况下进一步缩合或通过与其他与甲醛水合物反应的化合物的反应任选地除去约0.5-10％重量的甲醛的残留量。

    Process of molding products by rim
    69.
    发明授权
    Process of molding products by rim 失效
    通过轮辋成型产品的工艺

    公开(公告)号：US5470523A

    公开(公告)日：1995-11-28

    申请号：US304058

    申请日：1994-09-12

    申请人： Bernhard Jansen ,  Jurgen Gronen ,  Hanns P. Muller

    发明人： Bernhard Jansen ,  Jurgen Gronen ,  Hanns P. Muller

    IPC分类号： B29C45/00 ,  C08G18/00 ,  C08G18/30 ,  C08G18/70 ,  C08G18/76 ,  C08K5/1515 ,  C08L75/04

    CPC分类号： C08K5/1515 ,  C08G18/003 ,  C08G18/70 ,  C08L75/04 ,  C08G2120/00

    摘要： The present invention relates to the use of organic compounds which contain epoxide groups and which are subjected to a heat treatment at 30.degree. to 150.degree. C. in the presence of an alkylating agent, as auxiliary substances to increase the weather resistance of molded plastic parts. These molded parts are produced by the reaction injection molding technique and the process comprises reacting reaction mixtures based on polyioscyanate addition products.

    摘要翻译： 本发明涉及使用含有环氧基团的有机化合物，并且在烷基化剂存在下在30℃至150℃下进行热处理，作为辅助物质，以增加模制塑料部件的耐候性 。 这些模塑部件通过反应注射成型技术生产，并且该方法包括使基于聚氰化物加成产物的反应混合物反应。

    Thermoplastic cellulose ether ester graft copolymers and process for their production
    70.
    发明授权
    Thermoplastic cellulose ether ester graft copolymers and process for their production 失效
    热塑性纤维素醚酯接枝共聚物及其制备方法

    公开(公告)号：US5466794A

    公开(公告)日：1995-11-14

    申请号：US245350

    申请日：1994-05-17

    申请人： Jochen Kalbe ,  Hanns P. Muller ,  Rainhard Koch ,  Jurgen Engelhardt ,  Wolfgang Koch ,  Klaus Szablikowski ,  Gunter Weber

    发明人： Jochen Kalbe ,  Hanns P. Muller ,  Rainhard Koch ,  Jurgen Engelhardt ,  Wolfgang Koch ,  Klaus Szablikowski ,  Gunter Weber

    IPC分类号： C08F251/02 ,  C08B13/00 ,  C08B15/00 ,  C08F251/00 ,  C08G63/664 ,  C08H8/00 ,  C08H99/00 ,  C08L1/00 ,  C08L1/32 ,  C08L1/26 ,  D01F2/28

    CPC分类号： C08B15/00 ,  C08B13/00 ,  C08G63/664

    摘要： The present invention relates to novel thermoplastic, water-insoluble cellulose hydroxyalkyl hydroxycarboxylic acid esters of the general structureCell--O--Rwhere Cell--O is the substituted OH group of a polymeric cellulose unit and R is either a monomeric and/or polymeric hydroxyalkylether hydroxycarboxylic acid ester of the structure X:X=--A--B--in which A is a linear polyether chain:A=(--D--O--).sub.nin which D signifies a linear aliphatic branched or unbranched chain with 2 to 11 C atoms and n is a whole number equal to or greater than 1, and B is a linear polyester chain: ##STR1## in which E signifies a linear aliphatic branched or unbranched chain with 2 to 5 C atoms and m is a whole number equal to or greater than 1, or R is equal to A or B or X and a combination thereof in any ratio, or R is equal to H (hydrogen) according to the degree of substitution per anhydroglucose unit (max. 3) with A, B or X, and a process for their production and use of these cellulose derivatives as biodegradable mouldings.

    摘要翻译： 本发明涉及通用结构为Cell-OR的新型热塑性，水不溶性纤维素羟烷基羟基羧酸酯，其中Cell-O是聚合纤维素单元的取代的OH基团，R是单体和/或聚合羟基烷基醚羟基羧酸 酯结构X：X = -AB-，其中A为直链聚醚链：A =（ - DO-）n，其中D表示具有2至11个C原子的直链脂族支链或非支链，n为整数 数目等于或大于1，B是线性聚酯链：其中E表示具有2至5个C原子的直链脂族支链或非支链链，m是等于或大于1的整数，或 R等于A或B或X及其任何比例的组合，或者R等于H（氢），根据每个脱水葡萄糖单元的取代度（最多3）与A，B或X，以及工艺 用于生产和使用这些纤维素衍生物作为生物降解 可塑成型品。