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US 4,303,554 AGranted
Composition and process for producing transparent conductive film
AssigneesHitachi, Ltd., Hitachi Chemical Company, Ltd.
InventorsRyoichi Sudo, Masaaki Okunaka, Hitoshi Yokono, Tokio Isogai, Mitsuo Yamazaki
Life of this patent
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Abstract
Transparent electroconductive film having no cracks and whitening is obtained by coating on a substrate a composition comprising an inorganic indium salt, a polybasic carboxylic acid or polybasic carboxylic acid anhydride and a solvent, and calcining the coated composition at a temperature of 300.degree. to 700.degree. C. under an atmosphere containing oxygen. When a tin compound is added to the composition, sheet resistance of the transparent electroconductive film can be adjusted favorably.
Claims27
A composition for forming a transparent electroconductive film comprising
- (A) an indium salt selected from the group consisting of a chloride, a nitrate and a perchlorate of indium and a hydrate thereof,
- (B) a polybasic carboxylic acid having 2 to 5 carboxyl groups in the molecule and having 12 or less carbon atoms, or
- (B') a polybasic carboxylic acid anhydride having 1 or more bonds of the formula:
- ##STR13## in the molecule and having 12 or less carbon atoms, and (D) a solvent for dissolving (A) and (B) or (B');
- the molar ratio of B/A or B'/A=0.1 to 5.0/l and A+B or B' is 2 to 50% by weight and D is 50 to 98% by weight.
2 more elements
A composition for forming transparent electroconductive film comprising
- (A) an indium salt selected from indium chloride, indium nitrate and indium perchlorate,
- (B) a polybasic carboxylic acid selected from succinic acid, glutaric acid, adipic acid, pimelic acid, azelaic acid, sebacic acid, maleic acid, citraconic acid, and a copolymer of acrylic acid and methyl acrylate in 1:6 molar ratio and having an average molecular weight of 2000, or
- (B') a polybasic carboxylic acid anhdride selected from succinic anhydride, maleic anhydride, glutaric anhydride, hexahydrophthalic anhydride and polyazelaic polyanhydride having a molecular weight of 2300, and
- (D) an organic solvent,
- wherein the molar ratio of B/A or B'/A=0.1 to 5.0/l and A+B or B' is 2 to 50% by weight and D is 50 to 98% by weight.
2 more elements
A composition for forming a transparent electroconductive film comprising
- (A) an indium salt selected from the group consisting of a chloride, a nitrate and perchlorate of indium and a hydrate thereof,
- (B) a polybasic carboxylic acid having 2 to 5 carboxyl groups in the molecule and having 12 or less carbon atoms, or
- (B') a polybasic carboxylic acid anhydride having 1 or more bonds of the formula:
- ##STR14## in the molecule and having 12 or less carbon atoms, (C) a tin compound selected from the group consisting of a tin compound of the formula:
- ##STR15## in which n is an integer of 17 or less and a tin halide, and (D) a solvent for dissolving (A), (B) or (B') and (C);
- the molar ratio of B/A over B'/A=0.1 to 5.0/l, the ratio of the tin compound/(the indium salt plus the tin compound)=5 to 15% by mole, and a total of A+B or B'+C is 2 to 50% by weight and D is 50 to 98% by weight.
3 more elements
A composition for forming transparent electroconductive film comprising
- (A) an indium salt selected from indium chloride, indium nitrate and indium perchlorate,
- (B) a polybasic carboxylic acid selected from succinic acid, glutaric acid, adipic acid, pimelic acid, azelaic acid, sebacic acid, maleic acid, citraconic acid, and a copolymer of acrylic acid and methyl acrylate in 1:6 molar ratio and having an average molecular weight of 2000, or
- (B') a polybasic carboxylic acid anhydride selected from succinic anhydride, maleic anhydride, glutaric anhydride, hexahydrophthalic anhydride and polyazelaic polyanhydride having a molecular weight of 2300,
- (C) a tin compound selected from a compound of the formula ##STR16## wherein n is an integer of 17 or less and a tin halide, and (D) an organic solvent for dissolving the ingredients (A), (B) or (B'), and (C),
- wherein the molar ratio of B/A or B'/A=0.1 to 5.0/l, the ratio of the tin compound/(the indium salt+the tin compound)=5 to 15% by mole, and a total of A+B or B'+C is 2 to 50% by weight and D is 50 to 98% by weight.
2 more elements
A process for forming a transparent electroconductive film which comprises coating on a substrate a liquid composition comprising
- (A) an indium salt selected from the group consisting of a chloride, a nitrate and a perchlorate of indium and a hydrate thereof,
- (B) a polybasic carboxylic acid having 2 to 5 carboxyl groups in the molecule and having 12 or less carbon atoms, or
- (B') a polybasic carboxylic acid anhydride having 1 or more bonds of the formula:
- ##STR17## in the molecule and having 12 or less carbon atoms, and (D) a solvent dissolving (A) and (B) or (B');
- a molar ratio of B/A or B'/A=0.1 to 5.0/l and A+B or B' is 2 to 50% by weight and D is 50 to 98% by weight, and calcining the coated composition at a temperature of 300.degree. to 700.degree. C. under an atmosphere containing oxygen.
2 more elements
A process for forming transparent electroconductive film which comprises coating on a substrate a liquid composition comprising
- (A) an indium salt selected from indium chloride, indium nitrate and indium perchlorate,
- (B) a polybasic carboxylic acid selected from succinic acid, glutaric acid, adipic acid, pimelic acid, azelaic acid, sebacic acid, maleic acid, citraconic acid, and a copolymer of acrylic acid and methyl acrylate in 1:6 molar ratio and having an average molecular weight of 2000, or
- (B') a polybasic carboxylic acid anhydride selected from succinic anhydride, maleic anhydride, glutaric anhydride, hexahydrophthalic anhydride and polyazelaic polyanhydride having a molecular weight of 2300, and
- (D) an organic solvent,
- wherein the molar ratio of B/A or B'/A=0.1 to 5.0/l and A+B or B' is 2 to 50% by weight and D is 50 to 98% by weight, and calcining the coated composition at a temperature of 300.degree. to 700.degree. C. under an atmosphere containing oxygen.
2 more elements
A process for forming a transparent electroconductive film which comprises coating on a substrate a liquid composition comprising
- (A) an indium salt selected from the group consisting of a chloride, a nitrate, and a perchlorate of indium and a hydrate thereof,
- (B) a polybasic carboxylic acid having 2 to 5 carboxyl groups in the molecule and having 12 or less carbon atoms, or
- (B') a polybasic carboxylic acid anhydride having 1 or more bonds of the formula:
- ##STR18## in the molecule and having 12 or less carbon atoms, (C) a tin compound selected from the group consisting of a tin compound of the formula:
- ##STR19## in which n is an integer of 17 or less and a tin halide, and (D) a solvent dissolving (A), (B) or (B'), and (C);
- the molar ratio of B/A or B'/A=0.1 to 5.0/l, the ratio of the tin compound/(the indium salt plus the tin compound/)=5 to 15% by mole, and a total of A+B or B'+C is 2 to 50% by weight and D is 50 to 98% by weight, and calcining the coated composition at a temperature of 300.degree. to 700.degree. under an atmosphere containing oxygen.
3 more elements
A process for forming transparent electroconductive film which comprises coating on a substrate a liquid composition comprising
- (A) an indium salt selected from indium chloride, indium nitrate and indium perchlorate,
- (B) a polybasic carboxylic acid selected from succinic acid, glutaric acid, adipic acid, pimelic acid, azelaic acid, sebacic acid, maleic acid, citraconic acid, and a copolymer of acrylic acid and methyl acrylate in 1:6 molar ratio and having an average molecular weight of 2000, or
- (B') a polybasic carboxylic acid anhydride selected from succinic anhydride, maleic anhydride, glutaric anhydride, hexahydrophthalic anhydride and polyazelaic polyanhydride having a molecular weight of 2300,
- (C) a tin compound selected from a compound of the formula ##STR20## wherein n is an integer of 17 or less and a tin halide, and (D) an organic solvent for dissolving the ingredients (A), (B) or (B'), and (C), wherein the molar ratio of B/A or B'/A=0.1 to 5.0/l, the ratio of the tin compound/(the indium salt+the tin compound)=5 to 15% by mole, and a total of A+B or B'+C is 2 to 50% by weight and D is 50 to 98% by weight, and calcining the coated composition at a temperature of 300.degree. to 700.degree. C. under an atmosphere containing oxygen.
1 more element
Dependencies are inferred from the claim text.