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1. (US5376308) Coating solution for forming transparent conductive coating and process for preparing same
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What is claimed is:
1. A coating solution for forming a transparent conductive coating comprising conductive particles having
(a) an average particle diameter of not more than 500 Å, and
(b) an amount of particles having a particle diameter of not more than 600 Å being not less than 60% by weight,
(c) an amount of particles having a particle diameter of not more than 100 Å being not less than 5% by weight, and
(d) an amount of particles having a particle diameter of not less than 1,000 Å being not more than 15% by weight, and
a matrix consisting of a silica polymer having
(A) an average degree of polymerization of 1,500-10,000, and
(B) an amount of the polymer having a degree of polymerization of not more than 3,000 being not more than 50% by weight, and
(C) an amount of the polymer having a degree of polymerization of not less than 10,000 being not more than 20% by weight.
2. A process for preparing a coating solution for forming a transparent conductive coating which comprises dispersing or dissolving in water and/or organic solvent powdered conductive particles or conductive particles dispersed in a sol having
(a) an average particle diameter of not more than 500 Å, and
(b) an amount of particles having a particle diameter of not more than 600 Å being not less than 60% by weight,
(c) an amount of particles having a particle diameter of not more than 100 Å being not less than 5% by weight, and
(d) an amount of particles having a particle diameter of not less than 1,000 Å being not more than 15% by weight, and
a matrix consisting of silica polymer having
(A) an average degree of polymerization of 1,500-10,000, and
(B) an amount of the polymer having a degree of polymerization of not more than 3,000 being not more than 50% by weight, and
(C) an amount of the polymer having a degree of polymerization of not less than 10,000 being not more than 20% by weight.
3. A coating solution for forming a transparent conductive coating comprising conductive particles having
(a) an average particle diameter of not more than 500 Å, and
(b) an amount of particles having a particle diameter of not more than 600 Å being not less than 60% by weight,
(c) an amount of particles having a particle diameter of not more than 100 Å being not less than 5% by weight, and
(d) an amount of particles having a particle diameter of not less than 1,000 Å being not more than 15% by weight, wherein the conductive particles are made from materials selected from the group consisting of tin oxide; tin oxide doped with antimony, phosphorus or fluorine; indium oxide; indium oxide doped with tin or fluorine; and antimony oxide, and
a matrix consisting of a silica polymer having
(A) an average degree of polymerization of 1,500-10,000, and
(B) an amount of the polymer having a degree of polymerization of not more than 3,000 being not more than 50% by weight, and
(C) an amount of the polymer having a degree of polymerization of not less than 10,000 being not more than 20% by weight.
4. A process for preparing a coating solution for forming a transparent conductive coating which comprises dispersing or dissolving in water and/or organic solvent powdered conductive particles or conductive particles dispersed in a sol having
(a) an average particle diameter of not more than 500 Å, and
(b) an amount of particles having a particle diameter of not more than 600 Å being not less than 60% by weight,
(c) an amount of particles having a particle diameter of not more than 100 Å being not less than 5% by weight, and
(d) an amount of particles having a particle diameter of not less than 1,000 Å being not more than 15% by weight, wherein the conductive particles are made from materials selected from the group consisting of tin oxide; tin oxide doped with antimony, phosphorus or fluorine; indium oxide; indium oxide doped with tin or fluorine; and antimony oxide, and
a matrix consisting of a silica polymer having
(A) an average degree of polymerization of 1,500-10,000, and
(B) an amount of polymer having a degree of polymerization of not more than 3,000 being not more than 50% by weight, and
(C) an amount of the polymer having a degree of polymerization of not less than 10,000 being not more than 20% by weight.
5. The coating solution of claim 3 wherein said transparent conductive coating has a resolution power of not less than 65 bar/cm as observed through said transparent conductive coating and a surface resistivity no greater than 10 10 Ω/▭.
6. The process of claim 4 wherein said transparent conductive coating has a resolution power of not less than 65 bar/cm as observed through said transparent conductive coating and a surface resistivity no greater than 10 10 Ω/▭.