SURFACE TREATMENT AGENT FOR METAL MATERIAL, AND METAL MATERIAL HAVING SURFACE TREATMENT COAT
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United States of America Patent
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Mar 18, 2016
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Mar 31, 2015
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Abstract
The present invention provides a surface treatment agent for metal materials, with which it is possible to form on a metal material a coat that is satisfactory overall in terms of properties such as corrosion resistance, adhesion, water resistance, alkali resistance, and solvent resistance, and that has excellent corrosion resistance and adhesion even when exposed to high-temperature environments; and a metal material having a surface treatment coat. This surface treatment agent for metal materials includes (A) an organopolysiloxane compound having a weight-average molecular weight of 400-10,000 and including a unit (X) the molecule of which has a phenyl group, and a unit Y which includes a group having a C1-3 alkyl group, the ratio (β/α) of the molar amount (α) of the units (X) and the molar amount (β) of all constituent units being 1.5 or greater, (B) coated aluminum particles surface-treated by an organosiloxane compound each single molecule of which has a hydrolysable group linked to a silicon atom; and (C) at least one component selected from the group consisting of metal oxide particles and clay minerals.
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