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13 条记录 (耗时 0.012 秒)

    Melt coating composition and coating process
    1.
    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

    Polyhydantoins from unsaturated carboxylic acids and polyiso(thio)cyanates
    3.
    发明授权
    Polyhydantoins from unsaturated carboxylic acids and polyiso(thio)cyanates 失效
    来自不饱和羧酸的聚乙内酰脲和聚（硫代）氰酸酯

    公开(公告)号：US4289868A

    公开(公告)日：1981-09-15

    申请号：US100712

    申请日：1979-12-06

    申请人： Jurgen Lewalter ,  Rudolf Merten ,  Wilfried Zecher ,  Willi Dunwald

    发明人： Jurgen Lewalter ,  Rudolf Merten ,  Wilfried Zecher ,  Willi Dunwald

    IPC分类号： C07D233/72 ,  C08G18/67 ,  C08G18/34 ,  C07D233/80 ,  C08G18/38

    CPC分类号： C07D233/72 ,  C08G18/671 ,  C08G18/6755

    摘要： Poly(thio)hydantoins are prepared by reacting an iso(thio)cyanate having at least two iso(thio)cyanate moieties with a compound of the formula ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and each represents hydrogen, halogen, a C.sub.1 -C.sub.20 aliphatic group, a C.sub.7 -C.sub.20 aliphatic-aromatic group, a C.sub.6 -C.sub.20 aromatic group or a heterocyclic group having from 4 to 16 ring members and at least one N, O or S atom;A represents CN, COR, substituted or unsubstituted C.sub.1 -C.sub.20 aliphatic group, C.sub.7 -C.sub.20 aliphatic-aromatic group, C.sub.6 -C.sub.20 aromatic group or a heterocyclic group having from 4 to 16 ring members and at least one N, O or S atom wherein the substituents are NO.sub.2, COOR.sub.4, CN, CO or OH; R and R.sup.4 are selected from the definition of R.sup.1 and R.sup.2 with the exclusion of halogen;M represents OH or ##STR2## and R.sup.6 represents hydrogen, unsubstituted or substituted C.sub.2 -C.sub.20 aliphatic, C.sub.5 -C.sub.12 cycloaliphatic, C.sub.6 -C.sub.20 aliphatic aromatic, or a C.sub.5 -C.sub.12 aromatic or C.sub.5 -C.sub.12 cycloaliphatic containing a heteroatom N, O or S in the ring, wherein the substituents are at least one halogen, C.sub.1 -C.sub.10 alkyl, or C.sub.6 -C.sub.12 aryl.

    摘要翻译： 聚（硫）乙内酰脲通过使具有至少两个异（硫代）氰酸酯部分的异（硫代）氰酸酯与下式化合物反应制备：其中R 1和R 2相同或不同，各自表示氢，卤素， 具有4至16个环成员和至少一个N，O或S原子的C 1 -C 20脂族基团，C 7 -C 20脂族 - 芳族基团，C 6 -C 20芳族基团或杂环基团; A表示CN，COR，取代或未取代的C 1 -C 20脂族基团，C 7 -C 20脂族 - 芳族基团，C 6 -C 20芳族基团或具有4至16个环成员和至少一个N，O或S原子的杂环基，其中 取代基是NO 2，COOR 4，CN，CO或OH; R和R4选自R1和R2的定义，不包括卤素; M代表OH或者R 6代表氢，未取代或取代的C 2 -C 20脂族C 5 -C 12脂环族C 6 -C 20脂族芳族或C 5 -C 12芳族或C 5 -C 12脂环族基，其含有杂原子N，O或S 在环中，其中取代基是至少一个卤素，C 1 -C 10烷基或C 6 -C 12芳基。