Title:
COMPOSITE COATING FOR ELIMINATING POLLUTION BY HEAVY METAL CHROMIUM AND VOCS FROM SOURCE AND PREPARATION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/147135
Kind Code:
A1
Abstract:
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. The described composite coating has excellent impact resistance, weather resistance, and chemical reagent resistance, eliminates the problem of pollution by both heavy metal chromium and VOCs from a source, and is green and environmentally friendly. Also disclosed is a preparation method for the described composite coating.
Inventors:
ZHANG KAI (CN)
YANG SHICHAO (CN)
MA YANG (CN)
YANG SHICHAO (CN)
MA YANG (CN)
Application Number:
PCT/CN2020/076436
Publication Date:
July 29, 2021
Filing Date:
February 24, 2020
Export Citation:
Assignee:
GUANGDONG PROVINCIAL ACADEMY BUILDING RES GROUP CO LTD (CN)
International Classes:
C09D127/12; C09D1/00; C09D5/03; C09D5/08; C09D7/63; C23C26/00
Foreign References:
| CN105132900A | 2015-12-09 | |||
| CN102242358A | 2011-11-16 | |||
| CN106086846A | 2016-11-09 | |||
| US20030221751A1 | 2003-12-04 | |||
| CN103184446A | 2013-07-03 | |||
| CN102409332A | 2012-04-11 |
Attorney, Agent or Firm:
GUANGZHOU ZHIYOU PATENT & TRADEMARK AGENCY CO., LTD. (CN)
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