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Low-Melt Polyamic Acid Based Powder CoatingsThe present invention is directed to a method for powder coating a metal substrate using a low-melt polyamic acid (PAA) polymer that readily imidizes to polyimides. These low-melt PAAs have been shown to be useful in resins applied as powder coatings to metal surfaces. The resin includes an end-capping material capable of providing crosslinking functionality to at least one end of the low-melt PAA polymer. The end-capping material functions dually as a polymerization chain terminator and crosslinking agent, thus producing resins that have molecular weights low enough to flow well and form good cured films applicable for use in powder coating.
Document ID
20170006156
Acquisition Source
Headquarters
Document Type
Other - Patent
Authors
Jolley, Scott T.
Date Acquired
July 6, 2017
Publication Date
June 27, 2017
Subject Category
Composite Materials
Metals And Metallic Materials
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-Patent-9,688,881
Patent Application
US-Patent-Appl-SN-14/199,975
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