Conductor composition v

Abstract

A conductive composition consisting essentially of (a) 50-95 wt % finely divided particles of an electrically-conductive material dispersed in (b) a liquid vehicle, for use in the manufacture of an electrically-conductive pattern on a substrate for the use of reducing cross-sectional area and width while retaining conductivity and resistivity.

1 . A conductive composition consisting essentially of (a) 50-95 wt % finely divided particles of an electrically-conductive material dispersed in (b) a liquid vehicle, for use in the manufacture of an electrically-conductive pattern on a substrate for the use of reducing cross-sectional area and width while retaining conductivity and resistivity. 
     
     
         2 . A conductive composition comprising: (a) finely divided particles of an electrically-conductive material; (b) an inorganic binder selected from lead borates, lead silicates, lead borosilicates, cadmium borate, lead cadmium borosilicates, zinc borosilicates, sodium cadmium borosilicates, bismuth silicates, bismuth borosilicates, bismuth lead silicates, bismuth lead borosilicates, oxides or oxide precursors of metals, and mixtures thereof; dispersed in (c) a liquid vehicle wherein the total composition contains 50-95% by weight solids and wherein said inorganic binder is present at less than 1.0% of the total solids in the composition. 
     
     
         3 . The composition of any one of  claims 1  or  2  wherein said electrically-conductive material is selected from silver, gold, platinum, or palladium and mixtures thereof. 
     
     
         4 . A process for the manufacture of an electrically-conductive pattern, said process comprising:
 (i) providing a substrate;   (ii) providing on at least a part of said substrate a layer of enamel;   (iii) applying onto said enamel the conductive composition of any one of  claims 1  to  3 ;   (iv) firing the coated substrate.   
     
     
         5 . An article comprising a substrate having on at least a part thereof a layer of enamel, and on at least a part of said enamel an electrically-conductive pattern, said electrically-conductive pattern is formed from a conductive composition comprising: (a) finely divided particles of an electrically-conductive material; (b) an inorganic binder selected from lead borates, lead silicates, lead borosilicates, cadmium borate, lead cadmium borosilicates, zinc borosilicates, sodium cadmium borosilicates, bismuth silicates, bismuth borosilicates, bismuth lead silicates, bismuth lead borosilicates, oxides or oxide precursors of metals, and mixtures thereof; dispersed in (c) a liquid vehicle.
 wherein said inorganic binder is present from 0 to 1.0% of the total solids in the composition.   
     
     
         6 . A conductive composition for use as a coating on a substrate wherein said substrate is an automotive defogging or defrosting element, or is a printed window aerial or antenna consisting of
 (a) 50-95 wt % finely divided particles of an electrically-conductive material dispersed in:   (b) a liquid vehicle, for use in the manufacture of an electrically-conductive pattern on a substrate for the use of reducing cross-sectional area and width while retaining conductivity and resistivity   wherein said substrate is an automotive defogging or defrosting element, or is a printed window aerial or antenna.   
     
     
         7 . The composition of  claim 6  wherein said electrically-conductive material is selected from the group consisting of silver, gold, platinum, and palladium and mixtures thereof. 
     
     
         8 . A conductive composition consisting of:
 50-95 wt % finely divided particles of an electrically-conductive material selected from the group consisting of silver, gold, platinum, palladium and mixtures thereof dispersed in a liquid vehicle, selected from an organic vehicle and an aqueous vehicle for use in the manufacture of an electrically-conductive pattern on a substrate for the use of reducing cross-sectional area and width while retaining conductivity and resistivity.   
     
     
         9 . The composition of  claim 6  or  claim 7  wherein the electrically-conductive material is silver. 
     
     
         10 . A conductive composition consisting essentially of:
 (a) 50-95 wt % finely divided particles of an electrically-conductive material dispersed in (b) a liquid vehicle, for use in the manufacture of an electrically-conductive pattern on a substrate for the use of reducing cross-sectional area and width while retaining conductivity and resistivity, and wherein the composition does not contain an inorganic binder.   
     
     
         11 . A conductive composition comprising:
 (a) finely-divided particles of an electrically-conductive material;   (b) an inorganic binder selected from lead borates, lead silicates, lead borosilicates, cadmium borate, lead cadmium borosilicates, zinc borosilicates, sodium cadmium borosilicates, bismuth silicates, bismuth borosilicates, bismuth lead silicates, bismuth lead borosilicates, oxides or oxide precursors of metals, and mixtures thereof; dispersed in (c) a liquid vehicle wherein the total composition contains 50-95% by weight solids and wherein said inorganic binder is present at less than 0.5% of the total solids in the composition.   
     
     
         12 . A conductive composition consisting essentially of:
 (a) finely divided particles of an electrically-conductive material;   (b) one or more inorganic binder, wherein the inorganic binder is selected from the group consisting of: lead borates, lead silicates, lead borosilicates, cadmium borate, lead cadmium borosilicates, zinc borosilicates, sodium cadmium borosilicates, bismuth silicates, bismuth borosilicates, bismuth lead silicates, bismuth lead borosilicates, oxides or oxide precursors of metals, and mixtures thereof; dispersed in   (c) a liquid vehicle wherein the total composition contains 50-95% by weight solids and wherein said inorganic binder is present at less than 0.8% of the total solids in the composition.   
     
     
         13 . The composition of  claim 12  wherein said electrically-conductive material is selected from the group consisting of silver, gold, platinum, and palladium and mixtures thereof. 
     
     
         14 . An article comprising a substrate and an electrically-conductive pattern, said electrically-conductive pattern is formed from a conductive composition consisting essentially of: (a) finely divided particles of an electrically-conductive material; (b) one or more inorganic binder, wherein the inorganic binder is selected from the group consisting of: lead borates, lead silicates, lead borosilicates, cadmium borate, lead cadmium borosilicates, zinc borosilicates, sodium cadmium borosilicates, bismuth silicates, bismuth borosilicates, bismuth lead silicates, bismuth lead borosilicates, oxides or oxide precursors of metals, and mixtures thereof; dispersed in (c) a liquid vehicle wherein said inorganic binder is present from 0 to 1.0% of the total solids in the composition. 
     
     
         15 . A conductive composition comprising:
 (a) 50-95 wt % finely divided particles of an electrically-conductive material, wherein the electrically-conductive material comprises flakes dispersed in:   (b) a liquid vehicle.   
     
     
         16 . The composition of  claim 15 , further comprising an inorganic binder. 
     
     
         17 . The composition of  claim 15 , wherein the electrically-conductive material comprises one or more components selected from the group consisting of: tin, aluminum, copper, cobalt, nickel, iron, and bismuth. 
     
     
         18 . The composition of  claim 15 , wherein the inorganic binder is lead-free. 
     
     
         19 . The composition of  claim 15 , wherein the electrically conductive material further comprises powders. 
     
     
         20 . The composition of  claim 15 , wherein the electrically-conductive material further comprises silver. 
     
     
         21 . A conductive composition comprising:
 (a) finely divided particles of an electrically-conductive material, wherein the electrically conductive material comprises one or more components selected from the group consisting of: tin, aluminum, zinc copper, cobalt, nickel, iron, and bismuth;   (b) an inorganic binder; dispersed in   (c) a liquid vehicle wherein the total composition contains 50-95% by weight solids.   
     
     
         22 . The composition of  claim 21 , wherein the inorganic binder is lead-free. 
     
     
         23 . The composition of  claim 21 , wherein the electrically-conductive material further comprises silver. 
     
     
         24 . The composition of  claim 21 , wherein two or more metals are combined to form a metals composition or alloy. 
     
     
         25 . The composition of  claim 21 , wherein the electrically-conductive material is a metal in the form of one or more components selected from the group consisting of: metallic particles, alloys comprising the metal, and derivatives substantially converted to the metal under the action of heat. 
     
     
         26 . The composition of  claim 21 , wherein the electrically-conductive material comprises nickel. 
     
     
         27 . The composition of  claim 21 , wherein the electrically-conductive material comprises aluminum. 
     
     
         28 . The composition of  claim 21 , wherein the electrically-conductive material is in the form of metal powders, metal flakes, or blends thereof. 
     
     
         29 . The composition of  claim 21 , wherein the viscosity is 10-500 Pa·s at a shear rate of 4 sec −1 . 
     
     
         30 . The composition of  claim 21 , wherein the inorganic binder is present at less than 1.0% of the total solids in the composition. 
     
     
         31 . The composition of  claim 21 , wherein the liquid vehicle comprises diethylene glycol, a monobutyl ether of diethylene glycol, or a mixture thereof.