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    Powder coating compositions, a process for their preparation, and their use for the coating of heat resistant substrates
    4.
    发明授权
    Powder coating compositions, a process for their preparation, and their use for the coating of heat resistant substrates 失效
    粉末涂料组合物，其制备方法及其用于涂覆耐热基材的用途

    公开(公告)号：US5508337A

    公开(公告)日：1996-04-16

    申请号：US238563

    申请日：1994-05-05

    申请人： Christian Wamprecht ,  Reinhard Halpaap ,  Hans-Ulrich Meier-Westhues ,  Wolfgang Schultz

    发明人： Christian Wamprecht ,  Reinhard Halpaap ,  Hans-Ulrich Meier-Westhues ,  Wolfgang Schultz

    IPC分类号： C08G18/40 ,  C08G18/78 ,  C08G18/79 ,  C08G18/80 ,  C09D5/46 ,  C08J3/00 ,  C08F8/30 ,  C08K3/20 ,  C08L75/00

    CPC分类号： C08G18/7831 ,  C08G18/4063 ,  C08G18/792 ,  C08G18/8077 ,  C08G2150/20 ,  Y10T428/31551

    摘要： The present invention relates to a powder coating composition having a glass transition temperature of 20.degree. to 80.degree. C. and containing(A) 56 to 86.9% by weight of a polyacrylate polyol component having a hydroxyl number of 30 to 155 and a glass transition temperature of 30.degree. to 120.degree. C.,(B) 0.1 to 9% by weight of a polyester polyol component having a hydroxyl number of 40 to 180 and a glass transition temperature of -40.degree. to 80.degree. C.,(C) 13 to 35% by weight of a polyisocyanate component having a glass transition temperature of -40.degree. to 60.degree. C. and containing at least one ketoxime-blocked polyisocyanate selected from (i) polyisocyanate derivatives prepared from 1,6-diisocyanatohexane and containing biuret, isocyanurate, uretdione, and/or urethane groups, (ii) polyisocyanate derivatives prepared from mixtures of 1,6-diisocyanatohexane and 1-isocyanato-3,3,5-trimethyl-5-isocyanatomethylcyclohexane and containing isocyanurate groups and optionally uretdione groups and (iii) polyisocyanate derivatives prepared from 4,4'-diisocyanato-dicyclohexylmethane and containing urethane groups, and(D) at least one catalyst for the reaction between blocked isocyanate groups and hydroxyl groups,wherein i) the percentages of components (A), (B), and (C) are based on the total weight of these components and ii) components (A), (B), and (C) are present in amounts sufficient to provide an equivalent ratio of blocked isocyanate groups to hydroxyl groups of 0.5:1 to 1.5:1.The present invention is also relates to a process for the preparation of this powder coating composition and to heat-resistant substrates, particularly automotive body parts, coated with this powder coating composition.

    摘要翻译： 本发明涉及玻璃化转变温度为20〜80℃，含有（A）56〜86.9重量％的羟基数为30〜155的聚丙烯酸酯多元醇成分和玻璃化转变温度的粉末涂料组合物 温度为30〜120℃，（B）0.1〜9重量％的羟值为40〜180，玻璃化转变温度为-40〜80℃的聚酯多元醇成分，（C） 13至35重量％的玻璃化转变温度为-40至60℃的多异氰酸酯组分，并含有至少一种酮肟封闭的多异氰酸酯，其选自（i）由1,6-二异氰酸根合己烷制备并含有缩二脲 ，异氰脲酸酯，脲二酮和/或氨基甲酸酯基团，（ii）由1,6-二异氰酸根合己烷和1-异氰酸根合-3,3,5-三甲基-5-异氰酸甲酯基环己烷的混合物制备并含有异氰脲酸酯基团和任选的脲二酮基团的多异氰酸酯衍生物， （iii ）由4,4'-二异氰酸根合二环己基甲烷制备并含有氨基甲酸酯基团的多异氰酸酯衍生物，和（D）至少一种用于封端异氰酸酯基和羟基之间反应的催化剂，其中i）组分（A），（B ）和（C）基于这些组分的总重量，和ii）组分（A），（B）和（C）以足以提供封端异氰酸酯基与羟基的当量比为0.5的量存在 ：1〜1.5：1。 本发明还涉及这种粉末涂料组合物的制备方法以及涂覆有该粉末涂料组合物的耐热基材，特别是汽车车身部件。

    Uretdione powder coating cross-linking agents having a low melt viscosity
    6.
    发明授权
    Uretdione powder coating cross-linking agents having a low melt viscosity 失效
    具有低熔体粘度的Uretdione粉末涂料交联剂

    公开(公告)号：US5621064A

    公开(公告)日：1997-04-15

    申请号：US556549

    申请日：1995-11-29

    申请人： Hans-Josef Laas ,  Reinhard Halpaap ,  Hans-Ulrich Meier-Westhues ,  Wolfgang Schultz

    发明人： Hans-Josef Laas ,  Reinhard Halpaap ,  Hans-Ulrich Meier-Westhues ,  Wolfgang Schultz

    IPC分类号： C08G18/32 ,  C08G18/42 ,  C08G18/44 ,  C08G18/65 ,  C08G18/66 ,  C08G18/78 ,  C08G18/79 ,  C08G18/80 ,  C09D5/03 ,  C09D5/46 ,  C08G18/10

    CPC分类号： C08G18/798 ,  C08G18/8012 ,  C08G18/8064 ,  C08G18/808 ,  C08G2150/20

    摘要： The present invention relates to polyaddition compounds that are solid below 40.degree. C. and liquid above 125.degree. C. and contain, based on the weight of the polyaddition compounds,a) 0 to 2% by weight of free isocyanate groups (calculated as NCO; molecular weight=42),b) 3 to 16% by weight of uretdione groups (calculated as C.sub.2 N.sub.2 O.sub.2 ; molecular weight=84),c) 10 to 22% by weight of urethane groups (calculated as --NH--CO--O--; molecular weight=59).d) 0 to 20% by weight of carboxylic add ester groups (calculated as CO--O--; molecular weight=44) ande) of 0 to 25% by weight of carbonate groups (calculated as --O--CO--O--; molecular weight=60),provided that the total content of carboxylic add ester groups and carbonate groups is at least 1% by weight.The present invention also relates to a process for the preparation of these polyaddition compounds and to their use as a starting component for the manufacture of polyurethane plastics, especially as the cross-linking component in thermally cross-linkable two-component polyurethane powder coatings for heat-resistant substrates.

    摘要翻译： 本发明涉及固体低于40℃，液体高于125℃并含有基于加聚化合物的重量的加成化合物，a）0至2重量％的游离异氰酸酯基团（以NCO计算 ;分子量= 42），b）3至16重量％的脲二酮基团（以C 2 N 2 O 2计算;分子量= 84），c）10至22重量％的氨基甲酸酯基团（以-NH-CO-O- ;分子量= 59）。 d）0至20重量％的羧酸酯基（以CO-O-计算;分子量= 44）和e）0至25重量％的碳酸酯基团（以-O-CO-O-计算） 分子量= 60），条件是羧酸酯基和碳酸酯基的总含量为至少1重量％。 本发明还涉及一种制备这些加聚化合物的方法及其用作制备聚氨酯塑料的起始组分的用途，特别是作为用于热交联的双组分聚氨酯粉末涂料中的交联组分 耐性基材。