Composite coating for eliminating pollution by heavy metal chromium and VOCs from source and preparation method

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United States of America

PATENT NO 12215426
APP PUB NO 20220403525A1
SERIAL NO

17775592

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Abstract

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Disclosed is a composite coating for eliminating pollution by chromium and VOCs from a source, the coating comprising a conversion film layer and a coating surface layer. The conversion film layer is made of a surface pretreatment liquid, and the surface pretreatment liquid comprises the following components: an organic compound A having an aromatic ring and at least two phenolic hydroxyl groups in the molecule thereof, or a hydrate thereof; an ionic compound B containing zirconium and/or titanium and fluorine; a mixed solution C containing manganese fluoride; and an inorganic salt D containing potassium ions or sodium ions. The coating surface layer is an FEVE-type fluorocarbon powder coating layer. Also disclosed is a preparation method for the described composite coating.

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Patent Owner(s)

  • GUANGDONG PROVINCIAL ACADEMY OF BUILDING RESEARCH GROUP CO., LTD

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ma, Yang Guangdong, CN 3 4
Yang, Shichao Guangdong, CN 2 0
Zhang, Kai Guangdong, CN 1825 21629

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