Partially-defunctionalized aminoplast curing for polymer compositions
    233.
    发明授权
    Partially-defunctionalized aminoplast curing for polymer compositions 失效
    用于聚合物组合物的部分去官能化的氨基塑料固化

    公开(公告)号:US5300328A

    公开(公告)日:1994-04-05

    申请号:US965510

    申请日:1992-10-23

    Inventor: John W. Rehfuss

    CPC classification number: C09D133/062 C09D201/02 C08L61/20

    Abstract: A method of producing a cured coating is described comprising the steps of:(A) applying a coating composition on a substrate, wherein the coating composition is a curable coating composition comprising:(1) a polymer comprising functional groups that are reactive with methylol and/or methylalkoxy substituents on the amino nitrogens of an aminoplast curing agent, and(2) an aminoplast curing agent that includes, as substituents on the amino nitrogens:(a) a plurality of methylol and/or methylalkoxy substituents, and(b) one or more substituents that are either nonreactive with the functional groups on the polymer or are reactive with the functional groups at a higher temperature than the temperature at which the methylol and/or methylalkoxy substituents are reactive with the functional groups, and(B) curing the coating at a cure temperature sufficient to react the functional groups on the polymer with the methylol and/or methylalkoxy substituents, but below the temperature for reaction, if any, between the functional groups and the (b) substituents.

    Abstract translation: 描述了一种制备固化涂层的方法,包括以下步骤:(A)将涂料组合物涂布在基材上,其中涂料组合物是可固化涂料组合物,其包含:(1)包含与羟甲基反应的官能团的聚合物和 (2)氨基塑料固化剂,其包含作为氨基氮上的取代基:(a)多个羟甲基和/或甲基烷氧基取代基,和(b)一个氨基塑料固化剂 或多个与聚合物上的官能团不反应的取代基,或者在比羟甲基和/或甲基烷氧基取代基与官能团反应的温度更高的温度下与官能团反应的取代基,和(B)固化 在足以使聚合物上的官能团与羟甲基和/或甲基烷氧基取代基反应但低于反应温度的固化温度下进行涂布 官能团与(b)取代基之间的n(如果有的话)。

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