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

Active Publication Date: 2020-03-03
CHUGOKU MARINE PAINTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(A) Alkyl silicate, (B) Extender pigment, (C) Zinc powder, (D) Zinc oxide and / or titanium oxide powder are described as the constituents of the paint, but there is no description regarding the prevention of zinc oxidation

Method used

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  • Antirust coating composition and use thereof
  • Antirust coating composition and use thereof
  • Antirust coating composition and use thereof

Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The present invention provides an antirust coating composition comprising a binder (a), zinc powder and / or zinc alloy powder (b), and glass powder (c) having a softening point of 400 to 700°C. The antirust coating composition provided by the present invention can form an antirust coating film with excellent weldability, and the antirust coating film can also prevent the oxidation of zinc after being heated at a high temperature of, for example, 400 to 900° C., thereby forming an antirust coating. Antirust coating film with excellent antirust properties, and further by adjusting the mass ratio of the glass powder (c) relative to the zinc alloy powder (b), an antirust coating film with excellent heat discoloration resistance can be formed. In addition, it is possible to provide Use of rust coating compositions.

Description

technical field [0001] The present invention relates to an antirust coating composition excellent in antirust property and the like for use in steel plate processing steps and the like, and uses thereof. Background technique [0002] In the past, for the purpose of preventing rusting of large steel structures such as ships, marine structures, factory buildings, bridges, and land tanks (Japanese: land tanks), antirust paint was applied to the surface of steel plates. As such antirust paints, there are known organic antirust paints such as cleaning primers, zinc-free epoxy primers, and epoxy zinc-rich primers, and inorganic zinc antirust paints containing siloxane binders and zinc powder. rust paint. Among these antirust paints, inorganic zinc antirust paints excellent in heat resistance are most widely used. [0003] Steel plates coated with inorganic zinc antirust paint are assembled through high-calorie heating processes such as thermal cutting, welding, and straightening...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D201/00C09D5/10C09D7/61C09D183/02C09D183/04C23C26/00C23F11/00
CPCC09D183/02C09D183/04C23C26/00C08K2003/0893C08G77/02C08G77/18C08G77/04C09D5/106C09D7/61C08K3/08C08K3/40C09D7/40C23F11/00
Inventor 冈田昌满
Owner CHUGOKU MARINE PAINTS
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