Thermosetting durable powder coating composition

Thermosetting durable powder coating composition

  • CN 103,687,892 A
  • Filed: 08/01/2012
  • Published: 03/26/2014
  • Est. Priority Date: 08/04/2011
  • Status: Active Application
First Claim
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1. a powdered thermosetting compositions for coatings, it comprises the first resin and the second resin, described the first resin is that acid number is lower than the acid functional polyester resins of 50mg KOH/g, described the second resin can be by obtaining hydroxyl-functional component and the reaction of sour functional components, described hydroxyl-functional component comprises per molecule and has the component of 2 hydroxy functional groups and/or the component that per molecule has at least 3 hydroxy functional groups, described sour functional components comprises per molecule and has the component of 2 acid functional groups and/or the component that per molecule has at least 3 acid functional groups, wherein:

  • Whole the surpassing 90 % by mole and are derived from neopentyl glycol (NPG) of hydroxyl-functional components in-described the second resin, andIn-described the second resin, 6-11 % by mole of whole hydroxyl-functional components and sour functional components is derived from hydroxyl-functional component and/or the sour functional components that per molecule has at least 3 functional groups.

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