Primary antirust coating composition and coated steel structure obtained by coating the composition
A composition and coating technology, applied in anti-corrosion coatings, devices for coating liquid on surfaces, coatings, etc., can solve problems such as poor fusing performance, and achieve excellent anti-corrosion performance, good weldability and corrosion resistance, and fusing excellent effect
Active Publication Date: 2016-11-02
KANSAI PAINT CO LTD +1
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Problems solved by technology
By using this paint, the above-mentioned weldability can be greatly improved. For example, when only silica powder is used as the powder (D), there is a problem that the fusing property is deteriorated
Method used
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Embodiment
[0047] Examples and comparative examples are given below to illustrate the present invention more specifically, but the present invention is not limited by the examples. In addition, "part" and "%" in the following examples mean "parts by mass" and "% by mass", respectively.
[0048] [Manufacturing of Inorganic Zinc Precoat Primer]
[0049] In the raw materials shown in Table 1-1 and Table 1-2, except for 2N hydrochloric acid and colloidal silica ("Snowtex O" or "Snowtex 20"), put the rest of the raw materials into the reaction vessel and put the The reaction vessel was kept at 50°C, and hydrochloric acid and colloidal silica were added dropwise for about 1 hour while stirring. After the dropping was terminated, stirring was continued for 1 hour to obtain a solution or dispersion of the inorganic binder component (A). The above-mentioned solutions or dispersions, zinc powder (B), extender pigments (C) of the mixing quality shown in Table 2-1-1, Table 2-1-2, Table 2-2-1 and Table ...
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Abstract
The present invention addresses the problem of providing: an inorganic zinc shop primer composition which has excellent weldability and an excellent anti-corrosion property and has no problem in the thermal cutting of a coated steel structure having, formed thereon, a coating film made from the inorganic zinc shop primer composition; and a coated steel structure manufactured by coating the primer composition onto a steel structure. The present invention is an inorganic zinc shop primer composition comprising: (A) an inorganic binder component comprising (a1) an organosilicate and / or a condensation product component thereof and (a2) colloidal silica; (B) a zinc powder having an average particle diameter of 0.5 to 10 μm; and (C) an extender pigment comprising (c1) a silica powder having an average particle diameter of 1 to 10 μm and (c2) an extender pigment comprising at least one component selected from the group consisting of feldspar and kaolin and having an average particle diameter of 10 μm or less.
Description
Technical field [0001] The present invention relates to an inorganic zinc precoating primer composition and a coated steel structure formed by coating the composition. More specifically, the present invention relates to an inorganic zinc precoating primer composition formed on a steel structure An inorganic zinc pre-coated primer coating film with excellent weldability and corrosion resistance and excellent fusing properties; and a coated steel structure formed by coating the composition on a steel structure. Background technique [0002] Previously, steel structures used in the construction of ships, bridges, tanks, equipment, etc., were pre-painted with quick-drying properties, anti-corrosion, heat resistance, flexibility, etc. to prevent rust during processing and assembly. One-time anti-corrosion primer with excellent welding characteristics and many other characteristics, the so-called inorganic zinc pre-coating primer, is subjected to two surface treatments at the end of pr...
Claims
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IPC IPC(8): C09D183/02B05D7/14B05D7/24C09D5/00C09D5/10C09D183/04
CPCC08G77/02C09D5/106C09D183/02C08K3/36C08K2003/0893C08K3/346
Inventor 北岛昌和松田英树
Owner KANSAI PAINT CO LTD