Coating liquid for forming porous silica coating, coated substrate and short fiber silica
First Claim
1. A coating liquid for forming porous silica coating, comprising a product of reaction between:
- a short fiber silica, anda hydrolyzate of an alkoxysilane represented by the below indicated general formula [1] or a halogenated silane represented by the below indicated general formula [2];
space="preserve" listing-type="equation">X.sub.n Si(OR).sub.4-n [ 1],
space="preserve" listing-type="equation">X.sub.n SiX'"'"'.sub.4-n [ 2], wherein 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.
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Accused Products
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 Xn Si(OR)4-n or a halogenated silane of the formula Xn SiX'"'"'4-n (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.
19 Citations
4 Claims
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1. A coating liquid for forming porous silica coating, comprising a product of reaction between:
- a short fiber silica, and
a hydrolyzate of an alkoxysilane represented by the below indicated general formula [1] or a halogenated silane represented by the below indicated general formula [2];
space="preserve" listing-type="equation">X.sub.n Si(OR).sub.4-n [ 1],
space="preserve" listing-type="equation">X.sub.n SiX'"'"'.sub.4-n [ 2],wherein 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. - View Dependent Claims (2, 3, 4)
- a short fiber silica, and
Specification