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Metal surface treatment agent, surface treated steel and surface treatment method thereof, and coated steel and making method thereof

A metal surface treatment and steel technology, applied in the direction of metal material coating process, etc., can solve the problems of corrosion resistance and other problems, achieve good antirust ability, excellent processing adhesion, and change the bonding strength

Active Publication Date: 2014-02-12
SHIN ETSU CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] JP-A-2007-297648 (Patent Document 6) discloses a compound containing an aqueous emulsion, a trivalent transition metal ion, two molecules of β-diketone and two molecules of water coordinated, and a silane coupling agent. The anti-rust surface treatment agent (chemical conversion treatment solution) is unique in that the trivalent transition metal complex becomes an insoluble compound through drying to show anti-rust ability and coating adhesion ability, but the required The corrosion resistance cannot withstand the harsh environment as the present invention, and there is enough room for improvement

Method used

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  • Metal surface treatment agent, surface treated steel and surface treatment method thereof, and coated steel and making method thereof
  • Metal surface treatment agent, surface treated steel and surface treatment method thereof, and coated steel and making method thereof
  • Metal surface treatment agent, surface treated steel and surface treatment method thereof, and coated steel and making method thereof

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Embodiment

[0135] Hereinafter, the present invention will be described in more detail with reference to synthesis examples, examples, and comparative examples, but the present invention is not limited to these examples. In addition, in the following examples, part means parts by mass, Me means methyl group, Et means ethyl group, Ph means phenyl group, and IR means an abbreviation of infrared spectroscopy.

Synthetic example 1

[0136] [Synthesis Example 1: Production method of organosilicon compound (8) (following formula (8))]

[0137] 358.6 g (2 mol) of 3-aminopropyltrimethoxysilane (manufactured by Shin-Etsu Chemical Co., Ltd., KBM-903) was added to a 1 L separate flask equipped with a stirrer, a reflux condenser, a dropping funnel, and a thermometer, and the Add 146.2 g (2 mol) of methyl isothiocyanate, and stir at room temperature for 1 hour. Then, it was confirmed by IR measurement that the absorption peak derived from the isothiocyanate group of the raw material had completely disappeared, and the reaction was considered to be complete. The obtained product was a brown liquid, and when analyzed by gel permeation chromatography (GPC), the reaction product was a single product.

[0138] [chemical 15]

[0139]

Synthetic example 2

[0140] [Synthesis Example 2: Production method of organosilicon compound (9) (following formula (9))]

[0141] 358.6 g (2 mol) of 3-aminopropyltrimethoxysilane (manufactured by Shin-Etsu Chemical Co., Ltd., KBM-903) was added to a 1 L separate flask equipped with a stirrer, a reflux condenser, a dropping funnel, and a thermometer, and the Add 174.3 g (2 mol) of ethyl isothiocyanate, and stir at room temperature for 1 hour. Then, it was confirmed by IR measurement that the absorption peak derived from the isothiocyanate group of the raw material had completely disappeared, and the reaction was considered to be complete. The obtained product was a brown liquid, and when analyzed by gel permeation chromatography (GPC), the reaction product was a single product.

[0142] [chemical 16]

[0143]

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Abstract

The present invention relates to a metal surface treatment agent, a surface treated steel and a surface treatment method thereof, and a coated steel and a making method thereof. The chromate-free metal surface treatment agent is most suitable for being used as a metal coated steel, as the pre-processing of the coatings, such as the paint, etc., and can provide the excellent processability, adaptation and corrosion resistance. The metal surface treatment agent takes the organosilicon compounds represented by the general formula (1) as the necessary components, wherein R is hydrolytic perssad, R' is alkyl group having 1-4 carbon atoms, A is a linear chain or branched chain alkylene having 1-8 carbon atoms, X is one of the oxygen atom, the sulphur atom and the nitrogen-atom, R1 and R2 independently and separately represent the hydrogen atom, the alkyl group having 1-20 carbon atoms, the fluoroalkyl having 1-20 carbon atoms, aryl having 6-10 carbon atoms and alkenyl having 2-10 carbon atoms, or the substituent group represented by the general formula (2), m is an integer of 1-3. In the general formula (2), R' is the alkyl group having 1-4 carbon atoms, B is a linear chain or branched chain alkylene having 1-8 carbon atoms, and m is an integer of 1-3.

Description

technical field [0001] The present invention relates to a metal surface treatment agent, a surface treated steel material and a surface treatment method thereof, and a coated steel material having an upper coating film thereon and a manufacturing method thereof. The metal surface treatment agent is applicable to For cold-rolled steel, hot-rolled steel, stainless steel, electro-galvanized steel, hot-dip galvanized steel, galvanized-aluminum alloy steel, galvanized-iron alloy steel, galvanized-magnesium alloy steel, galvanized-aluminum- Magnesium alloy steel, aluminum-plated steel, aluminum-silicon alloy-plated steel, tin-plated steel, lead-tin-plated steel, chrome-plated steel, nickel-plated steel, etc. Background technique [0002] Conventionally, chromium-based surface treatment agents such as chromate and phosphoric acid chromate have been used as surface treatment agents for metals, and they are still widely used. However, according to the recent trend of environmental r...

Claims

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Application Information

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IPC IPC(8): C23F11/08C23C22/00
CPCC23C22/07C23C22/50C23C2222/20
Inventor 广神宗直
Owner SHIN ETSU CHEM IND CO LTD
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