US 2023/0399526 A1 · STABILIZED SPARSE METAL CONDUCTIVE FILMS AND SOLUTIONS FOR DELIVERY OF STABILIZING COMPOUNDS

Abstract

Metal salt based stabilizers are described that are effective to improve stability of sparse metal conductive films formed with metal nanowires, especially silver nanowires. Specifically, vanadium (+5) compositions can be effectively placed in coatings to provide desirable stabilization under accelerated wear testing conditions. Sparse metal conductive films can comprise fused metal nanostructured networks. Cobalt (+2) compounds can be incorporated as stabilization agents within nanowire inks to provide a high degree of stabilization without significantly interfering with the fusing process.

Claims27

Dependent claims

A system for forming a stabilized transparent conductive film, the system comprising:

A) a silver nanowire ink comprising solvent and from about 0.05 wt % to about 1 wt % silver nanowires;
and
B) a stabilization overcoat precursor solution comprising curable polymer precursors, solvent and from about 0.1 wt % to about 9 wt % stabilization composition relative to the solid weight, the stabilization composition comprising vanadium (+5) ions.

A method for forming a stabilized transparent conductive film, the method comprising:

applying a coating with a silver nanowire ink onto a surface of a transparent substrate;
drying the coating to form a transparent conductive film having a sheet resistance of no more than about 150 Ohms/sq and with a transmittance through the coated substrate of at least about 90%;
applying an overcoat precursor solution over the transparent conductive film, wherein the overcoat precursor solution comprises a curable polymer precursor and a vanadium (+5) stabilization composition;
and
curing the overcoat precursor solution to form a stabilization overcoat.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/238,178Filed 25 Aug 2023

Priority

14 Oct 2016

Published

14 Dec 2023

Term ends

Not estimatedThe source records don’t support an estimate.

Classification14 codes

C09D 5/24
Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced ; Filling pastes:…
C09D 5/002
Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced ; Filling pastes: priming…
C09D 7/61
Non-macromolecular: inorganic
C09D 7/70
Additives: characterised by shape, e.g. fibres, flakes or microspheres

Family

Application62/408,371Us provisional application · filed 14 Oct 2016

Application62/427,348Us provisional application · filed 29 Nov 2016

Application15/730,053Continuation · filed 11 Oct 2017

Application18/238,178Continuation

US 11,773,275 B2Related patent

US 2018/0105704 A1Published application

US 2023/0399526 A1This patent

From the US filing history. Foreign family members aren’t listed.

Stabilized sparse metal conductive films and solutions for delivery of stabilizing compounds

Life of this patent

Stabilized sparse metal conductive films and solutions for delivery of stabilizing compounds

Life of this patent

Abstract

Claims27