EP0128697A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Indium tin oxide sol compositions
Assignee: Sumitomo Chemical Co Ltd
•
Filing: 1984-05-29
•
Granted: —
•
Expires: 2004-05-29
Abstract
Abstract An indium tin oxide sol composition comprises 0.5 to 30% by weight of indium oxide, tin oxide in an amount of from 0.5 to 30% by weight, based on the amounts of tin, and indium, and a dispersing agent. The composition is obtained by contacting a solution of an indium salt of an inorganic acid containing a tin salt of an inorganic acid with an ion-exchange resin. The composition has high purity and forms excellent transparent conductive films.
Inventors
- 👤 Tadanori Hashimoto
- 👤 Hiroshi Yoshitake
- 👤 Hiroyuki Yokoyama
- 👤 Akiko Nakazono
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 00:02
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/25; C03C17/253; C09; C09K; C09K3/00; C01; C01G; C01G15/00; C01G15/003; C01G19/00; C01G19/003; C22; C22B; C22B3/00; C22B3/20; C22B3/42; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/23; C03C2217/231; C03C2218/00; C03C2218/10; C03C2218/11; C03C2218/116; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
103 words
An indium tin oxide sol composition for coating on a substrate to form a transparent conductive film and prepared from a solution of an inorganic salt of indium and of tin, characterised in that the composition comprises from 0.5 to 30% by weight of indium oxide, tin oxide in an amount of from 0.5 to 30% by weight, on the basis of the amounts of tin and indium, and a dispersing agent and in that the composition is obtained by contacting with an ion-exchange resin a solution of an indium salt of an inorganic acid containing a tin salt of an inorganic acid.
Claim 2
Dependent Claim
103 words
An indium tin oxide sol composition for coating on a substrate to form a transparent conductive film and prepared from a solution of an inorganic salt of indium and of tin, characterised in that the composition comprises from 0.5 to 30% by weight of indium oxide, tin oxide in an amount of from 0.5 to 30% by weight, on the basis of the amounts of tin and indium, and a dispersing agent and in that the composition is obtained by contacting with an ion-exchange resin a solution of an indium salt of an inorganic acid containing a tin salt of an inorganic acid.
Claim 3
Dependent Claim
21 words
A composition as claimed in Claim 1, wherein said indium salt of an inorganic acid is indium chloride or indium nitrate.
Claim 4
Dependent Claim
20 words
A composition as claimed in Claim 1 or 2, wherein said tin salt of an inorganic acid is stannic chloride.
Claim 5
Dependent Claim
38 words
A composition as claimed in any preceding claim, wherein said ion-exchange resin is an anion-exchange resin having a primary amino group, a secondary amino group, a tertiary amino group or a quaternary ammonium group as an exchange group.
Claim 6
Dependent Claim
30 words
A composition as claimed in any preceding claim, and further comprising from 0.001 to 10% by weight of a straight chain, saturated fatty acid having 1 to 18 carbon atoms.
Claim 7
Dependent Claim
14 words
A composition as claimed in Claim 5, wherein said fatty acid is acetic acid.
References Cited (Backward Citations)
FR2041262A5
Cited
US3617357A
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.