Patent US5504133A successfully refreshed from Google Patents.
US5504133A
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US
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Composition for forming conductive films
Assignee: Dai Nippon Toryo Co Ltd
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Filing: 1994-10-04
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Granted: 1996-04-02
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Expires: 2014-10-04
Abstract
Abstract A composition for forming transparent conductive films comprises a tin-containing indium oxide (ITO) powder dispersed in a binder solution. The binder solution comprises a mixed organic solvent consisting of at least one polar solvent and at least one non-polar solvent, in which a polymer having a weight-average molecular weight of from 8,000 to 150,000 is dissolved. The polymer contains (a) an acidic functional group in such a proportion that the polymer has an acid number of from 0.5 to 15 mg-KOH/g, or (b) a polyalkylene glycol chain in a proportion of from 0.5% to 40% by weight, or both of (a) and (b) in the molecule. Alternatively, the binder solution comprises an actinic radiation-curable binder, which comprises an acrylate or methacrylate compound containing an acid phosphate group in the molecule. The composition can form, by coating, a transparent conductive film having improved electrical and optical properties.
Inventors
- 👤 Masato Murouchi
- 👤 Toshiharu Hayashi
- 👤 Akira Nishihara
- 👤 Masaoki Ishihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:01
CPC Classifications
C; C08; C08L; C08L79/00; C08L79/04; C08L79/08; H; H10; H10F; H10F71/00; H10F71/138; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08L83/00; C08L83/04; C09; C09D; C09D5/00; C09D5/24; G; G03; G03G; G03G5/00; G03G5/10; G03G5/104; H01; H01B; H01B1/00; H01B1/20; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/256; Y10T428/31504; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31899; Y10T428/31902
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
149 words
A composition for forming a conductive film, which comprises a tin-containing indium oxide powder dispersed in a binder solution, wherein the binder solution comprises a binder polymer having a weight-average molecular weight of from 8,000 to 150,000 dissolved in a mixed organic solvent of at least one polar solvent and at least one non-polar solvent, the binder polymer being selected from the group consisting of (a) a polymer containing an acidic functional group in such a proportion that the polymer has an acid number of from 0.5 to 15 mg-KOH/g, (b) a polymer containing a polyalkylene glycol chain in a proportion of from 0.5% to 40% by weight, and (c) a polymer containing an acidic functional group in such a proportion that the polymer has an acid number of from 0.5 to 15 mg-KOH/g and a polyalkylene glycol chain in a proportion of from 0.5% to 40% by weight.
Claim 2
Dependent Claim
149 words
A composition for forming a conductive film, which comprises a tin-containing indium oxide powder dispersed in a binder solution, wherein the binder solution comprises a binder polymer having a weight-average molecular weight of from 8,000 to 150,000 dissolved in a mixed organic solvent of at least one polar solvent and at least one non-polar solvent, the binder polymer being selected from the group consisting of (a) a polymer containing an acidic functional group in such a proportion that the polymer has an acid number of from 0.5 to 15 mg-KOH/g, (b) a polymer containing a polyalkylene glycol chain in a proportion of from 0.5% to 40% by weight, and (c) a polymer containing an acidic functional group in such a proportion that the polymer has an acid number of from 0.5 to 15 mg-KOH/g and a polyalkylene glycol chain in a proportion of from 0.5% to 40% by weight.
Claim 3
Dependent Claim
18 words
The composition of claim 1, wherein the polymer has an acid number of from 1.0 to 10 mg-KOH/g.
Claim 4
Dependent Claim
21 words
The composition of claim 1, wherein the polymer contains from 2.0 % to 30% by weight of a polyalkylene glycol chain.
Claim 5
Dependent Claim
31 words
The composition of claim 1, wherein the polymer has an acid number of from 1.0 to 10 mg-KOH/g and contains from 2.0% to 30% by weight of a polyalkylene glycol chain.
Claim 6
Dependent Claim
37 words
The composition of of claim 1, wherein the tin-containing indium oxide powder contains 1-15 at % of Sn based on the sum of (In+Sn) and has an average primary particle diameter of not greater than 0.2 μm.
Claim 7
Dependent Claim
26 words
The composition of claim 1, wherein the weight ratio of tin-containing indium oxide powder to binder polymer is in the range of from 60:40 to 90:10.
Claim 8
Dependent Claim
29 words
The composition of claim 1, wherein the weight ratio of polar solvent to non-polar solvent in the mixed organic solvent is in the range of from 0.5:9.5 to 7:3.
Claim 9
Dependent Claim
37 words
The composition of claim 1, wherein the polar solvent is selected from the group consisting of alcohols and ketones, and the non-polar solvent is selected from the group consisting of aromatic hydrocarbons, alicyclic hydrocarbons, and aliphatic hydrocarbons.
Claim 10
Dependent Claim
51 words
A composition for forming a conductive film, which comprises a tin-containing indium oxide powder dispersed in a binder solution, wherein the binder is an actinic radiation-curable binder which comprises an acrylate or methacrylate compound containing an acid phosphate group in the molecule, the composition being curable by irradiation with actinic radiation.
Claim 11
Dependent Claim
51 words
A composition for forming a conductive film, which comprises a tin-containing indium oxide powder dispersed in a binder solution, wherein the binder is an actinic radiation-curable binder which comprises an acrylate or methacrylate compound containing an acid phosphate group in the molecule, the composition being curable by irradiation with actinic radiation.
Claim 12
Dependent Claim
34 words
The composition of claim 9, wherein the acrylate or methacrylate compound containing an acid phosphate group is present in a proportion of at least 2% by weight of the total weight of the binder.
Claim 13
Dependent Claim
38 words
The composition of claim 9, wherein the binder comprises, in addition to the acrylate or methacrylate compound containing an acid phosphate group, at least one radically polymerizable monomer or oligomer which is free of an acid phosphate group.
Claim 14
Dependent Claim
35 words
The composition of claim 11, wherein the acrylate or methacrylate compound containing an acid phosphate group is present in a proportion of from 2% to 50% by weight of the total weight of the binder.
Claim 15
Dependent Claim
18 words
The composition of claim 9, wherein the binder has an acid number of from 1 to 300 mg-KOH/g.
Claim 16
Dependent Claim
36 words
The composition of claim 9, wherein the tin-containing indium oxide powder contains 1-15 at % of Sn based on the sum of (In+Sn) and has an average primary particle diameter of not greater than 0.2 μm.
Claim 17
Dependent Claim
25 words
The composition of claim 9, wherein the weight ratio of tin-containing indium oxide powder to binder is in the range of from 60:40 to 90:10.
Claim 18
Dependent Claim
30 words
The composition of claim 9, wherein the binder solution further comprises a photoinitiator in a proportion of 0.1-20 parts by weight for each 100 parts by weight of the binder.
Claim 19
Dependent Claim
17 words
The composition of claim 1 wherein said polymer is derived from styrene, methyl acrylate and acrylic acid.
Claim 20
Dependent Claim
18 words
The composition of claim 1 wherein said polymer is derived from styrene, methyl acrylate, and methoxypolyethylene glycol methacrylate.
Claim 21
Dependent Claim
20 words
The composition of claim 1 wherein said polymer is derived from acrylic acid, styrene, methyl acrylate, and methoxypolyethylene glycol methacrylate.
Claim 22
Dependent Claim
25 words
The composition of claim 9 wherein said binder comprises a mixture of mono(2-methacryloylpolyoxyethyl) acid phosphate, diethylene glycol dimethacrylate, trimethylolpropane triacrylate and a polyester acrylate oligomer.
Claim 23
Dependent Claim
25 words
The composition of claim 9 wherein said binder comprises a mixture of di(2-methacryloyloxyethyl) acid phosphate, diethylene glycol dimethacrylate, trimethylolpropane triacrylate and a polyester acrylate oligomer.
Claim 24
Dependent Claim
12 words
The composition of claim 20 wherein said binder further includes acrylic acid.
Claim 25
Dependent Claim
22 words
The composition of claim 9 wherein said binder comprises a mixture of mono(2-methacryloylpolyoxyethyl) acid phosphate, trimethylolpropane triacrylate and a polyester acrylate oligomer.
Claim 26
Dependent Claim
19 words
The composition of claim 9 wherein said binder comprises a mixture of mono(2-methacryloylpolyoxyethyl) acid phosphate and polyurethane acrylate oligomer.
Claim 27
Dependent Claim
15 words
The composition of claim 1 wherein said solvent comprises a mixture of xylene and butanol.
References Cited (Backward Citations)
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