SURFACE MODIFIERS FOR PREPARING AGE-RESISTANT INORGANIC SALTS
Humidity and temperature may impact the physical properties of Basic Copper Nitrate (BCN), (Cu 2 (OH) 3 (NO 3 ), BCN) inorganic particles. The use of hydrophobic surface coatings on these inorganic particles have been found to protect and/or minimize the amount of surface degradation over a period of time.
1 ) Basic Copper Nitrate (BCN) particles, of the chemical formula Cu 2 (OH) 3 (NO 3 ), for use in ballistic and gas generant applications, wherein said particles are coated with a hydrophobic surface coating.
2 ) The particles of claim 1 , wherein the hydrophobic surface coating is selected from organic surfactants, polyols, alkanolamines and combinations thereof.
3 ) The particles of claim 2 , wherein the hydrophobic surface coating is selected from the group consisting of glycerin, dextrose, sorbitol and triethanolamine.
4 ) The particles of claim 1 , wherein the hydrophobic surface coating is glycerin.
5 ) The particles of claim 2 , wherein the hydrophobic surface coating is about 0.1 to about 5% by weight of the total mass of particles.
6 ) The particles of claim 2 , wherein the hydrophobic surface coating is about 0.5 to about 4% by weight of the total mass of particles.
7 ) The particles of claim 4 , wherein the hydrophobic surface coating is about 0.1 to about 5% by weight of the total mass of particles.
8 ) The particles of claim 4 , wherein the hydrophobic surface coating is about 0.5 to about 4% by weight of the total mass of particles.
9 ) The particles of claim 4 , wherein the hydrophobic surface coating is about 1% to about 3% by weight of the total mass of particles.
10 ) A ballistic basic copper nitrate composition treated with a hydrophobic surface modifying substance.
11 ) The ballistic basic copper nitrate composition of claim 10 wherein the surface modifying substance is selected form the group consisting of organic surfactants, polyols and combinations thereof.
12 ) The ballistic basic copper nitrate composition of claim 11 wherein the surface modifying substance is about 0.1 to about 5% by weight of the total mass of particles.
13 ) The ballistic basic copper nitrate composition of claim 11 wherein the surface modifying substance is about 0.5 to about 4% by weight of the total mass of particles.
14 ) The ballistic basic copper nitrate composition of claim 10 , wherein the hydrophobic surface coating is glycerin.
15 ) The ballistic basic copper nitrate composition of claim 10 , wherein the hydrophobic surface coating is about 0.1 to about 5% by weight of the total mass of particles.
16 ) The ballistic basic copper nitrate composition of claim 10 , wherein the hydrophobic surface coating is about 0.5 to about 4% by weight of the total mass of particles.
17 ) The ballistic basic copper nitrate composition of claim 10 , wherein the hydrophobic surface coating is about 1% to about 3% by weight of the total mass of particles.