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 - 10 . (canceled) 
     
     
         11 . 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. 
     
     
         12 . The particles according to  claim 11 , wherein the inorganic particles comprise a carbonate containing an alkaline earth metal and/or a composite oxide containing an alkaline earth metal. 
     
     
         13 . The particles according to  claim 11 , wherein the primary particles are obtained by surface-treating the inorganic particles with an organic compound, and
 the organic compound contains a binding group capable of binding to the surface of the inorganic particles and a hydrophobic group and/or a hydrophilic group serving as the organic group.   
     
     
         14 . The particles according to  claim 11 , having an aspect ratio of 1000 or less. 
     
     
         15 . The particles according to  claim 11 , having a maximum length of 200 μm or less. 
     
     
         16 . The particles according to  claim 11 , obtained by hydrothermal synthesis. 
     
     
         17 . The particles according to  claim 16 , wherein an inorganic compound for forming inorganic particles and the organic compound are subjected to a hydrothermal synthesis. 
     
     
         18 . The particles according to  claim 16 , wherein a metal hydroxide containing an alkaline earth metal, a carbonic acid source and the organic compound are subjected to a hydrothermal synthesis. 
     
     
         19 . The particles according to  claim 18 , wherein the carbonic acid source is formic acid and/or urea. 
     
     
         20 . The particles according to  claim 16 , wherein a metal hydroxide containing an alkaline earth metal, a metal complex and the organic compound are subjected to a hydrothermal synthesis. 
     
     
         21 . The particles according to  claim 16 , wherein the hydrothermal synthesis is performed in the presence of a pH adjusting agent. 
     
     
         22 . The particles according to  claim 11 , obtained by subjecting an inorganic compound for forming inorganic particles to a high temperature treatment in an organic compound containing the organic group. 
     
     
         23 . The particles according to  claim 11 , subjected to wet classification using the solvent. 
     
     
         24 . A particle dispersion comprising a solvent and particles that are dispersed as primary particles in the solvent,
 wherein the particles are organic-inorganic composite particles having an organic group on the surface of inorganic particles and have negative birefringence.   
     
     
         25 . A particle-dispersed resin composition comprising a resin and particles that are dispersed as primary particles in the resin,
 wherein the particles are organic-inorganic composite particles having an organic group on the surface of inorganic particles and have negative birefringence.   
     
     
         26 . A resin molded article formed of a particle-dispersed resin composition comprising a resin and particles that are dispersed as primary particles in the resin,
 wherein the particles are organic-inorganic composite particles having an organic group on the surface of inorganic particles and have negative birefringence.   
     
     
         27 . The resin molded article according to  claim 26 , being an optical film. 
     
     
         28 . A particle-dispersed resin composition comprising a resin and organic-inorganic composite particles having an organic group on the surface of inorganic particles,
 wherein the organic-inorganic composite particles have at least a configuration that does not allow the inorganic particles to contact with each other by steric hindrance of the organic group and are dispersed as primary particles in the resin.   
     
     
         29 . The particle-dispersed resin composition according to  claim 28 , wherein the resin has a functional group, and the organic group and the functional group both have a hydrophilic group or a hydrophobic group. 
     
     
         30 . The particle-dispersed resin composition according to  claim 28 , wherein the resin contains a highly oriented resin. 
     
     
         31 . The particle-dispersed resin composition according to  claim 28 , wherein the organic group contains a plurality of homologous organic groups. 
     
     
         32 . The particle-dispersed resin composition according to  claim 28 , wherein the organic group contains a plurality of heterologous organic groups. 
     
     
         33 . A particle-dispersed resin molded article molded from a particle-dispersed resin composition comprising a resin and organic-inorganic composite particles having an organic group on the surface of inorganic particles,
 wherein the organic-inorganic composite particles have at least a configuration that does not allow the inorganic particles to contact with each other by steric hindrance of the organic group and are dispersed as primary particles in the resin.   
     
     
         34 . A method for producing a particle-dispersed resin composition, the method comprising:
 blending a resin and organic-inorganic composite particles having an organic group on the surface of inorganic particles such that the organic-inorganic composite particles are dispersed as primary particles in the resin by steric hindrance of the organic group.   
     
     
         35 . The method for producing a particle-dispersed resin composition according to  claim 34 , wherein the organic-inorganic composite particles are produced in a hot solvent. 
     
     
         36 . The method for producing a particle-dispersed resin composition according to  claim 34 , wherein the organic-inorganic composite particles are produced in hot high pressure water. 
     
     
         37 . A method for producing a particle-dispersed resin molded article, the method comprising:
 producing a particle-dispersed resin molded article by molding a particle-dispersed resin composition obtained by blending a resin and organic-inorganic composite particles having an organic group on the surface of inorganic particles such that the organic-inorganic composite particles are dispersed as primary particles in the resin by steric hindrance of the organic group.   
     
     
         38 . 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. 
     
     
         39 . The catalyst particles according to  claim 38 , having a catalytic action for a gas and/or a liquid. 
     
     
         40 . The catalyst particles according to  claim 38 , having a photocatalytic action for a gas and/or a liquid. 
     
     
         41 . The catalyst particles according to  claim 38 , dispersed as primary particles in a solvent and/or a resin. 
     
     
         42 . The catalyst particles according to  claim 38 , containing a plurality of mutually different types of organic groups. 
     
     
         43 . The catalyst particles according to  claim 38 ,
 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.   
     
     
         44 . The catalyst particles according to  claim 38 , wherein the inorganic particles contain an oxide. 
     
     
         45 . The catalyst particles according to  claim 38 , wherein the inorganic particles contain at least one oxide selected from the group consisting of TiO 2 , WO 3  and SrTiO 3 . 
     
     
         46 . The catalyst particles according to  claim 45 , 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. 
     
     
         47 . The catalyst particles according to  claim 38 , wherein the catalyst particles have an average maximum length of 450 nm or less. 
     
     
         48 . The catalyst particles according to  claim 38 , obtained by surface-treating an inorganic substance and/or a complex thereof with an organic compound containing the organic group. 
     
     
         49 . The catalyst particles according to  claim 48 , wherein the inorganic substance and/or the complex are surface-treated with the organic compound in hot high pressure water. 
     
     
         50 . The catalyst particles according to  claim 48 , wherein the inorganic substance and/or the complex are surface-treated in the organic compound heated to a high temperature. 
     
     
         51 . A catalyst solution comprising a solvent and catalyst particles dispersed in the solvent,
 wherein the catalyst particles contain inorganic particles with a catalytic action and an organic group that binds to the surface of the inorganic particles, and the catalyst particles have a configuration that does not allow the inorganic particles to contact with each other by steric hindrance of the organic group.   
     
     
         52 . A catalyst composition comprising a resin and catalyst particles dispersed in the resin,
 wherein the catalyst particles contain inorganic particles with a catalytic action and an organic group that binds to the surface of the inorganic particles, and the catalyst particles have a configuration that does not allow the inorganic particles to contact with each other by steric hindrance of the organic group.   
     
     
         53 . A catalyst molded article formed of a catalyst composition comprising a resin and catalyst particles dispersed in the resin,
 wherein the catalyst particles contain inorganic particles with a catalytic action and an organic group that binds to the surface of the inorganic particles, and the catalyst particles have a configuration that does not allow the inorganic particles to contact with each other by steric hindrance of the organic group.   
     
     
         54 . The catalyst molded article according to  claim 53 , being an optical film. 
     
     
         55 . A resin molded article having micropores formed by removing organic-inorganic composite particles from a particle-containing resin molded article comprising a resin and the organic-inorganic composite particles that comprises inorganic particles 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. 
     
     
         56 . The resin molded article according to  claim 55 , wherein the organic-inorganic composite particles have an average maximum length of 400 nm or less. 
     
     
         57 . The resin molded article according to  claim 55 , wherein in the particle-containing resin molded article, the organic-inorganic composite particles are dispersed as primary particles in the resin. 
     
     
         58 . The resin molded article according to  claim 55 , wherein the particle-containing resin molded article has a phase separated structure formed of a resin phase composed of the resin and a particle phase that is composed of the organic-inorganic composite particles and phase-separated from the resin phase. 
     
     
         59 . The resin molded article according to  claim 58 , wherein the phase separated structure is a bicontinuous phase separated structure in which the particle phase is three-dimensionally continuous. 
     
     
         60 . The resin molded article according to  claim 55 , wherein the organic-inorganic composite particles partially remain. 
     
     
         61 . The resin molded article according to  claim 60 , wherein the proportion of remaining organic-inorganic composite particles increases toward one side of the resin molded article. 
     
     
         62 . The resin molded article according to  claim 55 , wherein the organic group contains a plurality of mutually different organic groups. 
     
     
         63 . A method for producing a resin molded article, the method comprising the steps of:
 preparing organic-inorganic composite particles that comprise inorganic particles 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;   blending the organic-inorganic composite particles with a resin so as to prepare a particle-containing resin composition and forming a particle-containing resin molded article from the particle-containing resin composition; and forming micropores formed by removing the organic-inorganic composite particles from the particle-containing resin molded article.   
     
     
         64 . The method for producing a resin molded article according to  claim 63 , wherein the step of preparing organic-inorganic composite particles involves surface-treating an inorganic material with an organic compound in hot high pressure water. 
     
     
         65 . The method for producing a resin molded article according to  claim 63 , wherein the step of preparing organic-inorganic composite particles involves surface-treating an inorganic material in a hot organic compound. 
     
     
         66 . A titanium complex comprising a titanium atom as a central atom and a hydroxycarboxylic acid having a total of 7 or more carbon atoms as a ligand. 
     
     
         67 . The titanium complex according to  claim 66 , wherein the hydroxycarboxylic acid is a hydroxyalkanoic acid having a total of 7 or more carbon atoms. 
     
     
         68 . The titanium complex according to  claim 67 , wherein the hydroxyalkanoic acid is linear. 
     
     
         69 . The titanium complex according to  claim 66 , wherein the hydroxycarboxylic acid is a hydroxymonocarboxylic acid. 
     
     
         70 . The titanium complex according to  claim 66 , wherein the hydroxycarboxylic acid is a monohydroxycarboxylic acid. 
     
     
         71 . The titanium complex according to  claim 66 , wherein the hydroxycarboxylic acid has a total of 13 or fewer carbon atoms. 
     
     
         72 . The titanium complex according to  claim 66 , wherein the hydroxycarboxylic acid is 2-hydroxycarboxylic acid and/or 3-hydroxycarboxylic acid. 
     
     
         73 . Titanium oxide particles obtained by treating a titanium complex comprising a titanium atom as a central atom and a hydroxycarboxylic acid having a total of 7 or more carbon atoms as a ligand in hot high pressure water. 
     
     
         74 . A method for producing titanium oxide particles including treating a titanium complex comprising a titanium atom as a central atom and a hydroxycarboxylic acid having a total of 7 or more carbon atoms as a ligand in hot high pressure water.