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    Melt coating composition and coating process
    7.
    发明授权
    Melt coating composition and coating process 失效
    熔体涂料组合物和涂层工艺

    公开(公告)号：US4096291A

    公开(公告)日：1978-06-20

    申请号：US544620

    申请日：1975-01-28

    申请人： Willi Dunwald ,  Jurgen Lewalter ,  Wilfried Zecher ,  Wolf-Dieter Last

    发明人： Willi Dunwald ,  Jurgen Lewalter ,  Wilfried Zecher ,  Wolf-Dieter Last

    IPC分类号： B05D7/24 ,  B05D7/14 ,  B05D7/20 ,  C08G18/80 ,  C09D175/00 ,  C09D175/04 ,  H01B3/30 ,  B05D5/12 ,  B32B27/06

    CPC分类号： C09D175/04 ,  C08G18/8096 ,  C08G2150/20 ,  Y10T428/12

    摘要： A process for the low solvent or solvent free coating of heat resistant substrates by using a coating substance which has a melting point or range below about 200.degree. C and which is heat crosslinkable. The substrate is coated at temperatures between about 20.degree. and 250.degree. C and the coating is subsequently heated to more elevated temperatures to effect crosslinking. The coating substance contains active hydrogen, preferably hydroxyl bearing compounds and blocked polyisocyanates which become reactive when the coating substance is heated to effect cross-linking. In a preferred embodiment, the blocked polyisocyanates consist of at least 40 equivalent percent alkanol or cycloalkanol blocked polyisocyanates. Also a coating substance containing at least 50 wt.% of a combination of active hydrogen, preferably hydroxyl bearing compounds and blocked isocyanates. The combination has a melting point of less than 200.degree. C and a blocked isocyanate group to active hydrogen ratio of about 1:2 to 1:9. At least 40 equivalent percent of the blocked polyisocyanates are alkanol or cycloalkanol blocked and the remainder are blocked such that they are reactive at temperatures at least 30.degree. C lower than the alkanol or cycloalkanol blocked polyisocyanates. The coating substance has a viscosity of less than about 40,000 cP at or below about 250.degree. C.

    摘要翻译： 通过使用熔点或范围低于约200℃并且是可热交联的涂层物质，对耐热基材进行低溶剂或无溶剂涂层的方法。 基材在约20℃和250℃之间的温度下被涂覆，随后将涂层加热到更高的温度以进行交联。 涂层物质含有活性氢，优选含羟基的化合物和封端的多异氰酸酯，当涂层物质被加热以实现交联时，它们变成反应性的。 在优选的实施方案中，封端的多异氰酸酯由至少40当量的链烷醇或环烷醇封端的多异氰酸酯组成。 还包括含有至少50重量％的活性氢，优选含羟基化合物和封端异氰酸酯的组合的涂料。 该组合物的熔点低于200℃，封闭的异氰酸酯基团与活性氢比为约1:2至1:9。 至少40当量的封端多异氰酸酯是链烷醇或环烷醇封闭的，其余的被封闭，使得它们在比链烷醇或环烷醇封端的多异氰酸酯低至少30℃的温度下具有反应性。 涂层物质在约250℃或低于约250℃时的粘度小于约40,000cP

    Process for the production of hydantoins
    8.
    发明授权
    Process for the production of hydantoins 失效
    乙内酰脲生产工艺

    公开(公告)号：US4465839A

    公开(公告)日：1984-08-14

    申请号：US437968

    申请日：1982-11-01

    申请人： Bernhard Schulte ,  Wolfgang Jakob ,  Willi Dunwald ,  Karl-Heinrich Meyer

    发明人： Bernhard Schulte ,  Wolfgang Jakob ,  Willi Dunwald ,  Karl-Heinrich Meyer

    IPC分类号： C07D233/76 ,  C08G73/06 ,  C07D233/78

    CPC分类号： C08G73/0616 ,  C07D233/76

    摘要： The invention relates to a process for the production of compounds containing at least one hydantoin ring by reacting a carbodiimide with derivatives of succinic acid anhydride corresponding to the following general formula: ##STR1## wherein R.sup.4 represents a halogen atom, an alkyl-carboxy or aryl-carboxy group; or with maleic acid anhydride in the presence of aromatic OH-functional compounds at temperatures of from about 20.degree. to about 250.degree. C., optionally in a solvent and optionally in the presence of a catalyst, and also to the use of the polyhydantoins obtained, where they have high molecular weights, as high temperature-resistant coating compositions, films, powders, adhesives, lacquers or mouldings.

    摘要翻译： 本发明涉及通过使碳二亚胺与对应于下列通式的琥珀酸酐衍生物反应制备含有至少一个乙内酰脲环的化合物的方法：其中R 4表示卤素原子，烷基 - 羧基或芳基 羧基; 或在马来酸酐存在下，在芳族OH官能化合物的存在下，在约20℃至约250℃的温度下，任选地在溶剂中，任选地在催化剂存在下，还可以使用所得的多乙内酰脲 它们具有高分子量，作为耐高温涂料组合物，薄膜，粉末，粘合剂，漆或模制品。