Title: Stain-proofing agent and building board using same
Application Number: 200610107670 Application Date: 2006.07.28
Publication Number: 1903970 Publication Date: 2007.01.31
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C09K3/22;B05D5/08
Applicant(s) Name: Nichiha Co., Ltd. Address:
Inventor(s) Name: Imanishi Yasuhisa;Yamauchi Hiroyuki;Ukai Masanori
Attorney & Agent: liu jian
Abstract:
    An object of the present invention is to give durable excellent stain-proofing property to the surface of a coat formed on the surface of a substrate of a building board without deteriorating the surface of the coat. The present invention provides a stain-proofing agent which comprises silica fine particles, an aqueous solvent and, as a stain-proofing improver, an alkali metal compound and/or an alkaline earth metal compound and/or a phosphorus compound and/or a clay mineral. Furthermore, the present invention provides a building board having an excellent stain-proofing property prepared by applying a coating composition onto the surface of a substrate to form a coat, and then applying a stain-proofing agent onto the coat while the coat is in an unhardened state or applying a stain-proofing agent onto the coat after subjecting the coat to a roughening treatment to enhance the adhesion of the stain-proofing layer to the coat.
Time: 17