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    Polyisocyanate mixtures, a process for their production and their use for the production of polyurethanes
    13.
    发明授权
    Polyisocyanate mixtures, a process for their production and their use for the production of polyurethanes 失效
    多异氰酸酯混合物，其生产方法及其用于生产聚氨酯的方法

    公开(公告)号：US5464921A

    公开(公告)日：1995-11-07

    申请号：US156202

    申请日：1993-11-22

    Applicant: Hans-Josef Laas ,  Reinhard Halpaap ,  Christian Wamprecht ,  Hans-Ulrich Meier-Westhues ,  Wolfgang Schultz ,  Lothar Kahl

    Inventor： Hans-Josef Laas ,  Reinhard Halpaap ,  Christian Wamprecht ,  Hans-Ulrich Meier-Westhues ,  Wolfgang Schultz ,  Lothar Kahl

    IPC: C07C265/14 ,  C07C265/04 ,  C07C265/10 ,  C07C271/10 ,  C07C271/24 ,  C07D251/34 ,  C08G18/10 ,  C08G18/73 ,  C08G18/75 ,  C08G18/76 ,  C09D5/03 ,  C09D5/46 ,  C09D175/00 ,  C09D175/04 ,  C08G18/32

    CPC classification number: C07C265/10 ,  C07C265/04 ,  C07C271/10 ,  C07C271/24 ,  C07D251/34

    Abstract: The present invention relates to polyisocyanate mixtures which are solid below 40.degree. C. and liquid above 125.degree. C. and which havea) an average isocyanate functionality of at least 2.1,b) a content of free isocyanate groups bonded to tertiary (cyclo)aliphatic carbon atoms (calculated as NCO; molecular weight=42) of 5 to 22 wt. %,c) a urethane group content calculated as --NH--CO--O--; molecular weight=59) of 2 to 30 wt. %,d) an isocyanurate group content (calculated as C.sub.3 N.sub.3 O.sub.3 ; molecular weight=126) of 0 to 30 wt. % ande) a carboxylic acid ester group content (calculated as --CO--O--; molecular weight=44) of 0 to 25 wt. % and/orf) a carbonate group content (calculated as --O--CO--O--; molecular weight=60) of from 0 to 34 wt. %with the proviso that the total amount of ester groups e) and carbonate groups f) is at least 2 wt. %.The present invention also relates to a process for the production of these polyisocyanate mixtures and to their use for the production of polyurethanes, in particular as the crosslinking component in heat-curable two-component polyurethane powder coatings for coating heat-resistant substrates.

    Abstract translation: 本发明涉及固体低于40℃和高于125℃的液体的多异氰酸酯混合物，其具有a）平均异氰酸酯官能度至少为2.1，b）结合到叔（环）的游离异氰酸酯基团的含量， 脂肪族碳原子（以NCO计算;分子量= 42）为5〜22重量份。 ％，c）以-NH-CO-O-计算的氨基甲酸酯基含量; 分子量= 59）为2〜30wt。 ％，d）异氰脲酸酯基含量（以C3N3O3计算;分子量= 126）为0〜30wt。 ％和e）羧酸酯基含量（以-CO-O-计算;分子量= 44）为0〜25重量％。 ％和/或f）0至34重量％的碳酸酯基含量（以-O-CO-O-计算;分子量= 60） ％，条件是酯基e）和碳酸酯基团f）的总量为至少2重量％。 ％。 本发明还涉及生产这些多异氰酸酯混合物的方法及其用于生产聚氨酯的方法，特别是作为用于涂覆耐热基材的可热固化双组分聚氨酯粉末涂料中的交联组分。

    Process for recovering and recycling organic binder components from a coatings slurry
    14.
    发明授权
    Process for recovering and recycling organic binder components from a coatings slurry 失效
    从涂料浆料中回收和回收有机粘合剂成分的方法

    公开(公告)号：US5281629A

    公开(公告)日：1994-01-25

    申请号：US15728

    申请日：1993-02-10

    Applicant: Wieland Hovestadt ,  Lothar Kahl ,  Juergen Meixner ,  Christian Wamprecht ,  Volker Schneider ,  Manfred Schoenfelder

    Inventor： Wieland Hovestadt ,  Lothar Kahl ,  Juergen Meixner ,  Christian Wamprecht ,  Volker Schneider ,  Manfred Schoenfelder

    IPC: B05B15/04 ,  C08G18/00 ,  C08G18/08 ,  C08G18/82 ,  C08J11/00 ,  C08J11/04 ,  C09D5/03 ,  C09D5/46 ,  C09D7/00 ,  C09D7/14 ,  C09D175/00 ,  C09D175/04 ,  C08G18/14

    CPC classification number: C09D7/008 ,  C08J11/00

    Abstract: The present invention relates to a process for recovering and recycling the organic binder components accumulating during the spraying of a solvent-containing, two-component polyurethane coating or a solvent-containing, moisture-curing one-component polyurethane coating byi) forming a coatings slurry containing the organic binder components, water and a coagulating agent,ii) mixing the coatings slurry, optionally after removing a portion of the water, with an organic solvent which is inert towards isocyanate groups,iii) reacting the free isocyanate groups present in the mixture obtained in step (ii) with a compound containing one isocyanate-reactive group which is more reactive with isocyanate groups than both water and the isocyanate-reactive component of the two-component polyurethane coating, if present, andiv) removing any remaining water and insoluble components from the organic phase accumulating in step (iii) and recovering the organic phase containing the organic binder components.

    Abstract translation: 本发明涉及一种在含有溶剂的双组分聚氨酯涂层或含溶剂的湿固化单组分聚氨酯涂层中积累的有机粘合剂组分的回收和再循环方法，该方法为：i）形成涂层 含有有机粘合剂组分的浆料，水和凝结剂，ii）任选地在除去一部分水之后将涂料浆料与对异氰酸酯基团呈惰性的有机溶剂混合，iii）使存在于 （ii）中得到的混合物与含有一个与异氰酸酯基反应的异氰酸酯反应性基团的化合物比双组分聚氨酯涂层的水和异氰酸酯反应性组分（如果存在）和iv）除去任何剩余的水 和来自步骤（iii）中积累的有机相的不溶性组分，并回收含有有机粘合剂的有机相 贱人

    Process for the preparation of polyisocyanates containing urethane groups and the products obtained
    15.
    发明授权
    Process for the preparation of polyisocyanates containing urethane groups and the products obtained 失效
    制备含有氨基甲酸酯基团的多异氰酸酯的方法和所得产品

    公开(公告)号：US4910332A

    公开(公告)日：1990-03-20

    申请号：US269230

    申请日：1988-11-09

    Applicant: Lothar Kahl ,  Josef Pedain ,  Wolfgang Wellner

    Inventor： Lothar Kahl ,  Josef Pedain ,  Wolfgang Wellner

    IPC: C08G18/10 ,  C07C271/28 ,  C08G18/72 ,  C08G18/79 ,  C08G18/80 ,  C08G18/82

    CPC classification number: C08G18/721 ,  C07C271/28 ,  C08G18/792 ,  C08G18/8009 ,  C08G18/8064

    Abstract: The present invention is directed to a process for the preparation of polyisocyanates containing urethane groups in which the content in monomeric starting diisocyanate is at most 0.4% by weight by reacting in a urethane-forming reaction(a) an excess quantity, based on component (b), of a diisocyanate component containing at least one aromatic diisocyanate which is free from urethane groups with(b) a polyol component containing at least one polyhydric alcohol in the molecular weight range of 62 to about 250followed by distillative removal of the unreacted excess starting diisocyanate (a), characterized in that before the distillative removal of the excess starting diisocyanate (a) is carried out,(c) an aliphatic polyisocyanate containing isocyanurate groups is incorporated in the urethane-containing reaction product of components (a) and (b) in a quantity of about 0.3 to 10% by weight, based on the undistilled reaction product of components (a) and (b), and the distillation residue is then optionally dissolved in an inert solvent and up to about 0.5 equivalents of an alcohol, per kg of solvent-free distillation residue on a solvent free basis is added to the resulting solution so that the amount of free starting diisocyanate (a) is further reduced and urethane groups are formed.The present invention is also directed to the polyisocyanates containing urethane groups obtained by this process.

    Abstract translation: 本发明涉及一种制备含有氨基甲酸酯基团的多异氰酸酯的方法，其中单体起始二异氰酸酯的含量至多为0.4重量％，其中在氨基甲酸酯形成反应（a）过量时，基于组分（ b），含有至少一种不含氨基甲酸酯基团的芳族二异氰酸酯的二异氰酸酯组分，（b）含有至少一种分子量范围为62至约250的多元醇的多元醇组分，然后蒸馏除去未反应的过量 起始二异氰酸酯（a），其特征在于，在蒸馏除去过量的起始二异氰酸酯（a）之前，（c）将含有异氰脲酸酯基团的脂族多异氰酸酯引入组分（a）和（ b）基于组分（a）和（b）的未蒸馏反应产物，其量为约0.3至10重量％，蒸馏残余物 然后任选地溶解在惰性溶剂中，并且在无溶剂基础上将每kg无溶剂蒸馏残余物最多至多约0.5当量的醇加入到所得溶液中，使得游离起始二异氰酸酯（a）的量进一步 还原和氨基甲酸酯基团形成。 本发明还涉及通过该方法获得的含有氨基甲酸酯基团的多异氰酸酯。

    Process for the production of polyurethane coatings
    20.
    发明授权
    Process for the production of polyurethane coatings 失效
    聚氨酯涂料生产工艺

    公开(公告)号：US5236741A

    公开(公告)日：1993-08-17

    申请号：US877682

    申请日：1992-05-01

    Applicant: Christian Zwiener ,  Josef Pedain ,  Lothar Kahl ,  Klaus Nachtkamp

    Inventor： Christian Zwiener ,  Josef Pedain ,  Lothar Kahl ,  Klaus Nachtkamp

    IPC: C08G18/38 ,  C08G18/62 ,  C08G18/78 ,  C08G18/79

    CPC classification number: C08G18/3821 ,  C08G18/6229 ,  C08G18/7831 ,  C08G18/792

    Abstract: The present invention relates to a process for the preparation of a polyurethane coating by coating a substrate with a coating composition containinga) a polyisocyanate component andb) an isocyanate-reactive component containing at least one compound corresponding to the formula ##STR1## wherein X represents an organic group which has a valency of n and is inert towards isocyanate groups at a temperature of 100.degree. C. or less,R.sup.1 and R.sup.2 may be identical or different and represent organic groups which are inert towards isocyanate groups at a temperature of 100.degree. C. or less,R.sup.3 and R.sup.4 may be identical or different and represent hydrogen or organic groups which are inert towards isocyanate groups at a temperature of 100.degree. C. or less andn represents an integer with a value of at least 2, and curing the coating composition at a temperature of 100.degree. C. or less.

    Abstract translation: 本发明涉及通过用包含a）多异氰酸酯组分的涂料组合物涂布基材来制备聚氨酯涂料的方法，和b）含有至少一种对应于下式的化合物的异氰酸酯反应性组分（I ）其中X表示在100℃或更低的温度下具有n价并且对异氰酸酯基团呈惰性的有机基团，R 1和R 2可以相同或不同，表示在一个或多个基团上对于异氰酸酯基团是惰性的有机基团 温度为100℃以下时，R 3和R 4可以相同或不同，表示在100℃以下的温度下对异氰酸酯基具有惰性的氢或有机基团，n表示至少为 并且在100℃或更低的温度下固化涂料组合物。

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