Composition for forming protective layer of dielectric material
AssigneeHokuriko Toryo Kabushiki Kaisha
InventorsHiromi Hasegawa, Kenichi Suzuki
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Abstract
There is disclosed a composition for forming a protective layer of a dielectric material which comprises: (A) alkaline earth metal oxide particles; and (B) one or more organic compounds containing a metal element and represented by the formula (I): M.sup.1 (OR.sup.1).sub.n (I) wherein M.sup.1 represents Al, Si, Ti or Zr; R.sup.1 represents C.sub.2-8 alkyl group or C.sub.2-8 alkoxyalkyl group, provided that when M.sup.1 is Al, Ti or Zr, OR.sup.1 may be alkylacetoacetato or acetylacetonato, or when M.sup.1 is Zr, R.sup.1 may be a monovalent acyl group which may be substituted by an hydroxyl group; and n represents the valency of M.sup.1, or a partially hydrolyzed or co-hydrolyzed condensate thereof.
Claims26
A composition for forming a protective layer on a dielectric material which comprises:
- (A) alkaline earth metal oxide particles;
- and
- (B) one or more organic compounds containing aluminum, silicon, titanium or zirconium and represented by the following formula (I):
- M.sup.1 (OR.sup.1).sub.n (I)
- wherein M.sup.1 represents aluminum, silicon, titanium or zirconium;
- R.sup.1 represents an alkyl group having 2 to 8 carbon atoms or an alkoxyalkyl group having 2 to 8 carbon atoms, a plural number of R.sup.1 's may be the same or different from each other, provided that when M.sup.1 is aluminum, titanium or zirconium, OR.sup.1 may be an alkyl-acetoacetato group or an acetylacetonato group, or when M.sup.1 is zirconium, R.sup.1 may be a monovalent acyl group which may be substituted by an hydroxyl group;
- and n represents the valency of M.sup.1,
- or a partially hydrolyzed or co-hydrolyzed condensate of the compounds.
A composition for forming a protective layer on a dielectric material which comprises:
- (A) alkaline earth metal oxide particles;
- and
- (B)
- (1) one or more organic compounds containing aluminum, silicon, titanium or zirconium and represented by the following formula (I):
- M.sup.1 (OR.sup.1).sub.n (I)
- wherein M.sup.1 represents aluminum, silicon, titanium or zirconium;
- R.sup.1 represents an alkyl group having 2 to 8 carbon atoms or an alkoxyalkyl group having 2 to 8 carbon atoms, a plural number of R.sup.1 's may be the same or different from each other, provided that when M.sup.1 is aluminum, titanium or zirconium, OR.sup.1 may be an alkyl-acetoacetato group or an acetylacetonato group, or when M.sup.1 is zirconium, R.sup.1 may be a monovalent acyl group which may be substituted by an hydroxyl group;
- and n represents the valency of M.sup.1,
- or a condensate obtained by partial hydrolysis or partial co-hydrolysis of the compound, and
- (2) one or more organic compounds containing alkaline earth metal represented by the formula:
- ##STR3## wherein M.sup.2 represents an alkaline earth metal atom;
- R.sup.2 may be the same or different from each other and represents a monovalent hydrocarbon group or a monovalent acyl group which may be substituted by a hydroxyl group;
- R.sup.3 represents a divalent acyl group which may be substituted by a hydroxyl group.
Dependencies are inferred from the claim text.