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    Self-crosslinking polyurethane dispersions and a process for their preparation
    1.
    发明申请
    Self-crosslinking polyurethane dispersions and a process for their preparation 审中-公开
    自交联聚氨酯分散体及其制备方法

    公开(公告)号：US20070004856A1

    公开(公告)日：2007-01-04

    申请号：US11475691

    申请日：2006-06-27

    申请人： Jan Mazanek ,  Dorota Greszta-Franz ,  Sebastian Dorr ,  Jurgen Meixner ,  Reinhard Halpaap ,  Helmut Muller ,  Olaf Fleck ,  Heino Muller

    发明人： Jan Mazanek ,  Dorota Greszta-Franz ,  Sebastian Dorr ,  Jurgen Meixner ,  Reinhard Halpaap ,  Helmut Muller ,  Olaf Fleck ,  Heino Muller

    IPC分类号： C08G18/08

    CPC分类号： C08G18/8064 ,  C08G18/0823 ,  C08G18/4219 ,  C08G18/8048 ,  C08G18/807 ,  C08G18/8077 ,  C09D175/06

    摘要： The present invention relates to a process for preparing self-crosslinking polyurethane dispersions by I) reacting a1) polyisocyanates with a2) at least one hydroxyl component having an average OH functionality of ≧2 and a number average molecular weight of 62 to 2500 g/mol, wherein the hydroxyl component contains at least one acid-functional compound containing at least one isocyanate-reactive group, to form an NCO-functional and optionally OH-functional prepolymer, II) then reacting the NCO-functional and optionally OH-functional prepolymer with a3) a hydroxyl component having an average OH functionality of >1 and a4) optionally another polyisocyanate component, which may be the same as or different from a1), to form an OH-functional and NCO-free polyurethane, III) adding a blocked polyisocyanate either before, during or after the reaction of steps I) and II), or forming a blocked polyisocyanate in situ from a polyisocyanate and a blocking agent after the reaction of step II) has taken place, IV) neutralizing the acid groups of the resulting composition by adding a5) a neutralizing agent, and V) dispersing the resulting composition in water. The present invention also relates to the dispersions prepared by the present invention and to their use in coating, adhesive and sealant compositions.

    摘要翻译： 本发明涉及一种制备自交联聚氨酯分散体的方法，其方法是使a1）多异氰酸酯与a2）至少一种平均OH官能度> = 2，数均分子量为62〜2500g / mol，其中所述羟基组分含有至少一种含有至少一个异氰酸酯反应性基团的酸官能化合物，以形成NCO-官能和任选的OH-官能预聚物，II）然后使所述NCO-官能和任选的OH-官能预聚物 其中a3）具有平均OH官能度> 1的羟基组分和a4）任选地可以与a1）相同或不同的另一种多异氰酸酯组分，以形成OH-官能和无NCO的聚氨酯，III）加入 在步骤I）和II）的反应之前，期间或之后封闭的多异氰酸酯，或在步骤II）的反应之后由多异氰酸酯和封闭剂原位形成封端多异氰酸酯具有ta 呃地方，IV）通过添加a）中和剂中和所得组合物的酸基，和V）将得到的组合物分散在水中。 本发明还涉及由本发明制备的分散体及其在涂料，粘合剂和密封剂组合物中的用途。

    Polyurethane powder coating compositions that do not split off blocking agents and have a low stoving temperature
    6.
    发明申请
    Polyurethane powder coating compositions that do not split off blocking agents and have a low stoving temperature 有权
    聚氨酯粉末涂料组合物不会分解阻断剂并且具有低烘烤温度

    公开(公告)号：US20050222364A1

    公开(公告)日：2005-10-06

    申请号：US11094589

    申请日：2005-03-30

    申请人： James Rawlins ,  Michael Grahl ,  Dorota Greszta-Franz ,  Hans-Josef Laas ,  Reinhard Halpaap

    发明人： James Rawlins ,  Michael Grahl ,  Dorota Greszta-Franz ,  Hans-Josef Laas ,  Reinhard Halpaap

    IPC分类号： C08G18/22 ,  C08G18/42 ,  C08G18/79 ,  C09D175/06 ,  C08G18/81

    CPC分类号： C08G18/798 ,  C08G18/42 ,  C08G2150/20 ,  C09D175/06

    摘要： The present invention relates to polyurethane powder coating compositions containing A) a hydroxyl-functional binder component, which is solid below 40° C. and liquid above 130° C., has a content of carboxyl groups (calculated as COOH; molecular weight 45) of 0.5 to 2.0 wt. %, and contains at least one polymeric polyol having an OH number of 15 to 200 mg KOH/g and a number average molecular weight of 400 to 10,000 and B) a polyaddition compound which contains uretdione groups and optionally free isocyanate groups, is solid below 40° C. and liquid above 125° C., and is prepared from aliphatic and/or cycloaliphatic diisocyanates, C) at least one zinc compound as hardening catalyst, and D) a compound which has a number average molecular weight of 200 to 5000 and contains groups reactive to carboxyl groups, wherein i) components A) and B) are present in amounts such that 0.8 to 2.2 isocyanate groups of component B) are present for each hydroxyl group of component A), ii) the term isocyanate groups of component B) means the sum of isocyanate groups present in dimeric form as uretdione groups and free isocyanate groups, iii) components A) and D) are present in amounts such that 0.8 to 2.0 groups of component D) which are reactive to carboxyl groups are present for each carboxyl group of component A), iv) when aliphatic and/or cycloaliphatic dicarboxylic acids having 4 to 20 carbon atoms and/or aliphatic hydroxyl carboxylic acids having 4 to 18 carbon atoms are present as component A2), the amount of components A2) and D) in the total amount of components A), B) and D) is less than 10 wt. % and v) the amount of component C) in the total amount of components A) to E) is 0.05 to 5 wt. %.

    摘要翻译： 本发明涉及聚氨酯粉末涂料组合物，其包含A）羟基官能粘合剂组分，其固体低于40℃，液体高于130℃具有羧基含量（按COOH计算;分子量45） 为0.5〜2.0重量％ ％，并且包含至少一种羟值为15-200mg KOH / g和数均分子量为400至10,000的聚合多元醇，以及B）含有脲二酮基团和任选的游离异氰酸酯基团的加聚化合物，其固体在下面 40℃，液体高于125℃，由脂族和/或脂环族二异氰酸酯制备，C）至少一种锌化合物作为硬化催化剂，和D）数均分子量为200-5000的化合物 并且含有与羧基反应的基团，其中i）组分A）和B）存在的量使得组分B）的每个羟基存在组分B）的0.8至2.2个异氰酸酯基团，ii）术语异氰酸酯基团 组分B）表示以二聚体形式存在的异氰酸酯基团作为脲二酮基团和游离异氰酸酯基团的总和，iii）组分A）和D）的存在量使得与羧基反应的0.8至2.0组的组分D） 推测 t）组分A）中的每个羧基，iv）当具有4至20个碳原子的脂族和/或脂环族二羧酸和/或具有4至18个碳原子的脂肪族羟基羧酸作为组分A2）存在时，组分的量 A2）和D）组分A），B）和D）的总量小于10wt。 ％和v）组分A）至E）的总量中组分C）的量为0.05至5重量％ ％。