A non-aqueous silver precursor composition contains at least 1 weight % of one or more (a) polymers that are certain cellulosic polymers; (b) reducible silver ions; and (c) an organic solvent medium consisting of: (i) a hydroxylic organic solvent having an -hydrogen atom and a boiling point at atmospheric pressure of 100-500 C., and, optionally, (ii) a nitrile-containing aprotic solvent or a carbonate-containing aprotic solvent different from the (i) organic solvent, each having a boiling point at atmospheric pressure of 100-500 C. The (b) reducible silver ions are present in an amount of 0.1-400 weight %, based on the total weight of the one or more (a) polymers. This composition can be used to form silver nanoparticles under silver ion reducing conditions and then applied to various substrates to provide silver nanoparticle patterns.

A non-aqueous silver precursor composition contains at least 1 weight % of one or more (a) polymers that are certain cellulosic polymers; (b) reducible silver ions; and (c) an organic solvent medium consisting of: (i) a hydroxylic organic solvent having an -hydrogen atom and a boiling point at atmospheric pressure of 100-500 C., and, optionally, (ii) a nitrile-containing aprotic solvent or a carbonate-containing aprotic solvent different from the (i) organic solvent, each having a boiling point at atmospheric pressure of 100-500 C. The (b) reducible silver ions are present in an amount of 0.1-400 weight %, based on the total weight of the one or more (a) polymers. This composition can be used to form silver nanoparticles under silver ion reducing conditions and then applied to various substrates to provide silver nanoparticle patterns.

A powder for a conductive material according to an embodiment of the present invention includes a large number of particles that contain copper as a main component and having an average primary particle diameter of 1 nm or more and 200 nm or less. The particles contain titanium on surfaces or inside thereof, and a content of the titanium is 0.003 atomic percent or more and 0.5 atomic percent or less.

A coating composition for application to a subsea component or structure includes a cellulose acetate, a plasticizer, a vegetable oil, and an ethylene-based polymer stabilizer that are mixed together. The plasticizer is epoxidized linseed oil. The vegetable oil is selected from the group including vegetable oil and soybean oil. The ethylene-based polymer stabilizer has a pigment carried therein. The ethylene-based polymer stabilizer is low-density polyethylene. The pigment is titanium dioxide and carbon black.

A coating composition for application to a subsea component or structure includes a cellulose acetate, a plasticizer, a vegetable oil, and an ethylene-based polymer stabilizer that are mixed together. The plasticizer is epoxidized linseed oil. The vegetable oil is selected from the group including vegetable oil and soybean oil. The ethylene-based polymer stabilizer has a pigment carried therein. The ethylene-based polymer stabilizer is low-density polyethylene. The pigment is titanium dioxide and carbon black.

A coating composition for application to a subsea component or structure includes a cellulose acetate, a plasticizer, a vegetable oil, and an ethylene-based polymer stabilizer that are mixed together. The plasticizer is epoxidized linseed oil. The vegetable oil is selected from the group including vegetable oil and soybean oil. The ethylene-based polymer stabilizer has a pigment carried therein. The ethylene-based polymer stabilizer is low-density polyethylene. The pigment is titanium dioxide and carbon black.

A process and composition for coating a pipe and a pipe support includes mixing a cellulose acetate, a plasticizer, and an oil together so as to form a solid mixture, heating the solid mixture so as to form a liquid state, covering an area of the joinder of the pipe and the pipe support with the liquid state, and drying the liquid state on the area of the joinder. An ethylene-based polymer stabilizer is added to the mixture of the cellulose acetate, the plasticizer and the oil. The oil migrates by gravity from the liquid state from the covered pipe into an area of contact between the pipe and the pipe support. The liquid state is applied around the outer diameter of the pipe and over the outer surface of the pipe support underlying the outer diameter of the pipe.

A process and composition for coating a pipe and a pipe support includes mixing a cellulose acetate, a plasticizer, and an oil together so as to form a solid mixture, heating the solid mixture so as to form a liquid state, covering an area of the joinder of the pipe and the pipe support with the liquid state, and drying the liquid state on the area of the joinder. An ethylene-based polymer stabilizer is added to the mixture of the cellulose acetate, the plasticizer and the oil. The oil migrates by gravity from the liquid state from the covered pipe into an area of contact between the pipe and the pipe support. The liquid state is applied around the outer diameter of the pipe and over the outer surface of the pipe support underlying the outer diameter of the pipe.

A process and composition for coating a pipe and a pipe support includes mixing a cellulose acetate, a plasticizer, and an oil together so as to form a solid mixture, heating the solid mixture so as to form a liquid state, covering an area of the joinder of the pipe and the pipe support with the liquid state, and drying the liquid state on the area of the joinder. An ethylene-based polymer stabilizer is added to the mixture of the cellulose acetate, the plasticizer and the oil. The oil migrates by gravity from the liquid state from the covered pipe into an area of contact between the pipe and the pipe support. The liquid state is applied around the outer diameter of the pipe and over the outer surface of the pipe support underlying the outer diameter of the pipe.

Articles can be prepared having silver layers or patterns using a non-aqueous silver precursor composition consisting essentially of: at least 1 weight % of one or more (a) cellulosic polymers, (b) at least 0.1 weight % of reducible silver ions, and (c) an organic solvent medium consisting of: (i) one or more hydroxylic organic solvents, and, optionally, (ii) a nitrile-containing or carbonate-containing aprotic solvent. This composition is subjected to a temperature of at least 20 C. for a time sufficient to convert at least 90 mol % of the (b) reducible silver ions to (d) silver nanoparticles having a mean particle size of at least 25 nm and up to and including 750 nm. Additional (ii) nitrile-containing or carbonate-containing aprotic solvent can be added, and (e) carbon black can be added sufficient to provide at least 5 weight % carbon black. The resulting silver nanoparticle-containing composition can be disposed onto a supporting surface of a substrate to form a silver nanoparticle-containing pattern, and any organic solvents can be removed. This pattern can also be electrolessly plated to form an electrically-conductive pattern.