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:
Sep. 24, 2002
Filed:
Apr. 28, 2000
Akira Nakashima, Kitakyushu, JP;
Kazuaki Inoue, Kitakyushu, JP;
Ryo Muraguchi, Kitakyushu, JP;
Michio Komatsu, Kitakyushu, JP;
Abstract
A coating liquid for forming porous silica coating, comprising a product of reaction between a short fiber silica and a hydrolyzate of an alkoxysilane of the formula X Si(OR) or a halogenated silane of the formula X SiX′ (in the formula, X represents a hydrogen atom, a fluorine atom, an alkyl group having 1 to 8 carbon atoms, an aryl group or a vinyl group; R represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, an aryl group or a vinyl group; X′ represents a chlorine atom or a bromine atom; and n is an integer of 0 to 3). A coated substrate comprising a porous silica coating film formed from the above coating liquid for forming porous silica coating. A short fiber silica having an average diameter (D) of 10 to 30 nm, a length (L) of 30 to 100 nm and an aspect ratio (L/D) of 3 to 10. The above coating liquid for forming porous silica coating enables forming an insulating film which is excellent in adherence to a substrate surface, mechanical strength, chemical resistance and crack resistance and enables flattening irregularities of a substrate surface to a high degree. The coating film of the coated substrate has the above excellent properties.