The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 11, 2002
Filed:
Nov. 10, 1999
Ikuo Narisawa, Yamagata-shi, Yamagata 990-0041, JP;
Makoto Takeishi, Yonezawa-shi, Yamagata 992-0054, JP;
Heihachi Murase, Oiso-machi, Naka-gun, Kanagawa 255-0004, JP;
Toshihiro Takekawa, Kanagawa, JP;
Yasuaki Kai, Yokohama, JP;
Tetsuro Tayu, Kanagawa, JP;
Other;
Abstract
The invention relates to an article superior in slipping a waterdrop down a surface of the article. The article has a substrate; and a functional layer formed on a surface of the substrate. The functional layer is chemically bonded to the surface of the substrate through siloxane-bonding. The article is prepared by a method including: (a) dissolving in a solvent (1) a silicone that is one of a first silicone having at an end a hydrolyzable functional group and a second silicone having at an end a hydrolyzable functional group and at the other end a fluoroalkyl group, (2) an acid, and (3) water, thereby to prepare a mixed liquid; (b) applying the mixed liquid to the surface of the substrate, thereby to form thereon a precursory layer; and (c) drying the precursory layer into the functional layer. In the preparation of the article, a silica precursor sol is optionally added to the mixed liquid. Alternatively, a combination of a silica precursor sol and a fluoroalkylsilane having at its end a hydrolyzable functional group is optionally added to the mixed liquid. Furthermore, an underlayer made from a hydrolyzable silicon compound may be provided between the substrate and the functional layer.