Antirust coating composition and use thereof
A technology of anti-rust paint and composition, applied in the direction of anti-corrosion paint, coating, metal material coating process, etc., can solve the problem of no zinc oxidation and so on
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preparation example 1
[0119] [Preparation Example 1] Preparation of Condensate of Alkyl Silicate
[0120] 38 g of ethyl silicate 40 (manufactured by COLCOAT Co., Ltd.), 18 g of industrial ethanol, 4 g of deionized water, and 0.38 g of 35% hydrochloric acid were added to the container, and after stirring at 50° C. for 3 hours, 40 g of isopropanol was added to prepare A solution of a condensate of an alkyl silicate.
preparation example 2
[0121] [Preparation Example 2] Preparation of Pigment Paste Components
[0122] The raw materials shown as the pigment paste components in Examples and Comparative Examples described in Tables 1 to 3 except for zinc powder (spherical zinc powder, flaky zinc powder, and flaky zinc alloy powder) were added to the polymer, respectively. Add glass beads to a vinyl container, vibrate for 3 hours with a paint shaker, then add zinc powder and vibrate for 5 minutes to disperse the pigment. Glass beads were removed using an 80-mesh filter to prepare pigment paste components, which were used in Examples 1 to 16 and Comparative Examples 1 to 3 described later.
Embodiment 1~16、 comparative example 1~3
[0124] The ratio of the condensate of the alkyl silicate in Preparation Example 1 as the main component and the pigment paste component in Preparation Example 2 as the pigment paste component is the ratio described in Tables 1 to 3 (mass basis) The conditions were put into a container made of polyethylene and dispersed for 10 minutes with a high-speed disperser to prepare a rust-proof coating composition.
[0125] The outlines of the components shown in Tables 1 to 3 are as follows.
[0126] Alkyl silicate condensate solution: Alkyl silicate condensate solution prepared in Production Example 1 (solid content concentration: 15.2% by mass)
[0127] Spherical zinc powder: F-2000 (manufactured by Honjo Chemical Co., Ltd.)
[0128] Flake zinc powder: STANDART Zinc flake GTT (manufactured by Aika Corporation)
[0129] Scale-shaped zinc alloy powder: STAPA 4ZNAL7 (alloy of zinc and aluminum, manufactured by Eckard)
[0130] Anti-settling agent: AEROSIL 200 (manufactured by Japan A...
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