Particles, particle dispersion, particle-dispersed resin composition, producing method therefor, resin molded article, producing method therefor, catalyst particles, catalyst solution, catalyst composition, catalyst molded article, titanium complex, titanium oxide particles and producing method therefor

Abstract

Organic-inorganic composite particles that can be dispersed in a solvent and/or a resin as primary particles having an organic group on the surface of inorganic particles, the organic-inorganic composite particles having negative birefringence.

1 . Catalyst particles comprising inorganic particles with a catalytic action and an organic group that binds to the surface of the inorganic particles, and having a configuration that does not allow the inorganic particles to contact with each other by steric hindrance of the organic group. 
     
     
         2 . The catalyst particles according to  claim 1 , having a catalytic action for a gas and/or a liquid. 
     
     
         3 . The catalyst particles according to  claim 1 , having a photocatalytic action for a gas and/or a liquid. 
     
     
         4 . The catalyst particles according to  claim 1 , dispersed as primary particles in a solvent and/or a resin. 
     
     
         5 . The catalyst particles according to  claim 1 , containing a plurality of mutually different types of organic groups. 
     
     
         6 . The catalyst particles according to  claim 1 , wherein the organic group is bound to the surface of the inorganic particles via a binding group, and the binding group contains a phosphoric acid group and/or a phosphoric acid ester group. 
     
     
         7 . The catalyst particles according to  claim 1 , wherein the inorganic particles contain an oxide. 
     
     
         8 . The catalyst particles according to  claim 1 , wherein the inorganic particles contain at least one oxide selected from the group consisting of TiO 2 , WO 3  and SrTiO 3 . 
     
     
         9 . The catalyst particles according to  claim 8 , wherein the inorganic particles further contain at least one inorganic substance selected from the group consisting of Pt, Pd, Cu, CuO, RuO 2  and NiO. 
     
     
         10 . The catalyst particles according to  claim 1 , wherein the catalyst particles have an average maximum length of 450 nm or less.