Powder coating composition comprising unsaturated polyesters and uses thereof
    1.
    发明授权
    Powder coating composition comprising unsaturated polyesters and uses thereof 失效
    包含不饱和聚酯的粉末涂料组合物及其用途

    公开(公告)号:US06194525B1

    公开(公告)日:2001-02-27

    申请号:US09075965

    申请日:1998-05-11

    IPC分类号: C08G6348

    摘要: The powder coating composition of the present invention includes a low-temperature mixture of a powder (A) and a powder (B), in which at least the powder (A) includes an unsaturated polyester resin and a free radical initiator for initiating polymerization of unsaturated polyester resins in the powder coating composition and the powder (B) includes a polymerization promoter and methods for making the composition. The powder (B) may further include an unsaturated polyester. The powders (A) and (B) are physically mixed at temperatures below which the polymerization promoter would cause the free radical initiator to initiate polymerization of the powder coating composition. Subsequently, the physically mixed powder coating composition is applied to a substrate and cured, during which the polymerization promoter causes the free radical initiator to initiate the curing reaction.

    摘要翻译: 本发明的粉末涂料组合物包括粉末(A)和粉末(B)的低温混合物,其中至少粉末(A)包含不饱和聚酯树脂和用于引发聚合的自由基引发剂 粉末涂料组合物中的不饱和聚酯树脂和粉末(B)包括聚合促进剂和制备组合物的方法。 粉末(B)还可以包括不饱和聚酯。 粉末(A)和(B)在低于该温度的温度下物理混合,聚合促进剂将引起自由基引发剂引发粉末涂料组合物的聚合。 随后,将物理混合的粉末涂料组合物施加到基材上并固化,在此期间聚合促进剂引起自由基引发剂引发固化反应。