Dispersion liquid, method for producing the same, and copper compound particles

Abstract

The present invention relates to an antiviral dispersion liquid, a method for producing the same, and an antiviral formed product. This dispersion liquid contains copper compound fine particles and a stabilizer in a non-aqueous solvent, and the copper compound fine particles are coated with fatty acid. The copper compound fine particles are dispersed in a dispersion medium homogeneously and stably, thereby to exhibit efficiently the antiviral properties of the copper compound fine particles.

1 . A dispersion liquid including copper compound fine particles and a stabilizer both of which are contained in a non-aqueous solvent, and the copper compound fine particles are coated with fatty acid,
 wherein the copper compound is a monovalent copper compound, and the stabilizer is at least one selected from the group consisting of saccharin, salicylic acid, aspartic acid, and citric acid.   
     
     
         2 . The dispersion liquid according to  claim 1 , wherein the copper compound particles are coated further with an ester compound of the fatty acid. 
     
     
         3 . The dispersion liquid according to  claim 1 , wherein the monovalent copper compound is cuprous oxide. 
     
     
         4 . The dispersion liquid according to  claim 1 , wherein the non-aqueous solvent is an ester-based solvent. 
     
     
         5 . The dispersion liquid according to  claim 1 , further containing a dispersant. 
     
     
         6 . The dispersion liquid according to  claim 1 , wherein the copper compound has antiviral properties. 
     
     
         7 . The dispersion liquid according to  claim 1 , wherein the copper compound particles are contained in an amount of 0.01% to 2% by weight. 
     
     
         8 . The dispersion liquid according to  claim 1 , wherein the stabilizer is contained in an amount of 0.01% to 0.1% by weight. 
     
     
         9 . The dispersion liquid according to  claim 1 , wherein the stabilizer is at least one of saccharin or salicylic acid. 
     
     
         10 . A method for producing a dispersion liquid including copper compound fine particles dispersed in the dispersion liquid, the method includes:
 introducing fatty acid copper and a stabilizer into glycol used as a high boiling point solvent, conducting heat-mixing to prepare a high boiling point solvent dispersion liquid containing the copper compound fine particles and the stabilizer, the copper compound fine particles being coated with fatty acid and dispersed in the high boiling point solvent dispersion liquid,   mixing the high boiling point solvent dispersion liquid with a low boiling point solvent blended in advance with a dispersant, and   separating the high boiling point solvent and the low boiling point solvent into two phases and extracting the copper compound fine particles coated with fatty acid from the high boiling point solvent into the low boiling point solvent.   
     
     
         11 . A method for producing a dispersion liquid including copper compound fine particles dispersed in the dispersion liquid, the method includes:
 introducing fatty acid, a copper compound and a stabilizer into glycol used as a high boiling point solvent, conducting heat-mixing to prepare a high boiling point solvent dispersion liquid containing the copper compound fine particles and the stabilizer, the copper compound fine particles being coated with fatty acid and dispersed in the high boiling point solvent dispersion liquid,   mixing the high boiling point solvent dispersion liquid with a low boiling point solvent blended in advance with a dispersant, and   separating the high boiling point solvent and the low boiling point solvent into two phases and extracting the copper compound fine particles coated with fatty acid from the high boiling point solvent into the low boiling point solvent.   
     
     
         12 . The method for producing a dispersion liquid according to  claim 9 , wherein the heat-mixing in preparation of the high boiling point solvent dispersion liquid is conducted in the presence of water. 
     
     
         13 . The method for producing a dispersion liquid according to  claim 10 , wherein the copper compound is any one of copper acetate, copper chloride and copper bromide. 
     
     
         14 . The method for producing a dispersion liquid according to  claim 9 , wherein the high boiling point solvent is diethylene glycol and the low boiling point solvent is butyl acetate. 
     
     
         15 . The method for producing a dispersion liquid according to  claim 9 , wherein the stabilizer is at least one selected from the group consisting of saccharin, salicylic acid, aspartic acid and citric acid. 
     
     
         16 . A method for producing a glycol dispersion liquid containing cupric oxide fine particles and saccharin, the cupric oxide fine particles being dispersed in the glycol dispersion liquid, the method includes:
 introducing fatty acid copper and saccharin into glycol and conducting heat-mixing to decompose the fatty acid copper.   
     
     
         17 . The method for producing a glycol dispersion liquid according to  claim 15 , wherein the heat-mixing is conducted in the presence of water. 
     
     
         18 . Monovalent copper compound fine particles coated with fatty acid and an ester compound of the fatty acid.