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US 12,077,443 B2Granted
Silica particles and method for producing the same
AssigneeFUJIFILM Business Innovation Corp.
InventorsYuka Zenitani, Sakae Takeuchi, Koji Sasaki, Yoshifumi Eri, Mai Mochida
Life of this patent
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Abstract
Silica particles include a nitrogen-containing compound. When the volumes of pores having a diameter of 1 nm or more and 50 nm or less, the volumes being determined from a pore size distribution curve of the silica particles before and after the silica particles are baked at 350° C., the pore size distribution curve being obtained by nitrogen gas adsorption, are defined as A and B, respectively, B/A is 1.2 or more and 5 or less and B is 0.2 cm3/g or more and 3 cm3/g or less.
Claims17
Silica particles comprising:
- a nitrogen-containing compound,
- wherein, when A is a volume of pores having a diameter of 1 nm or more and 50 nm or less before the silica particles are baked at 350° C. and B is a volume of pores having a diameter of 1 nm or more and 50 nm or less after the silica particles are baked at 350° C., the volumes being determined from a pore size distribution curve obtained by nitrogen gas adsorption, B/A is 1.2 or more and 5 or less and B is 0.2 cm3/g or more and 3 cm3/g or less, and
- wherein the pores are composed of a product of a reaction of a trifunctional silane coupling agent, and
- wherein the nitrogen-containing compound is at least one selected from the group consisting of a quaternary ammonium salt including molybdenum and a mixture of a quaternary ammonium salt with a metal oxide including molybdenum.
1 more element
Dependencies are inferred from the claim text.