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PROCESS FOR PRODUCTION OF SURFACE-COATED INORGANIC PARTICLES

外国特許コード F110002738
整理番号 S2007-0975-C0
掲載日 2011年4月12日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2008JP063361
国際公開番号 WO 2009/014201
国際出願日 平成20年7月25日(2008.7.25)
国際公開日 平成21年1月29日(2009.1.29)
優先権データ
  • 特願2007-194233 (2007.7.26) JP
発明の名称 (英語) PROCESS FOR PRODUCTION OF SURFACE-COATED INORGANIC PARTICLES
発明の概要(英語) Nano-sized inorganic particles having uniform particle sizes and precisely controlled particle diameters have already been produced by synthesis in an organic solvent, but these nano-sized inorganic particles are hindered from dispersing in a polar solvent because of the adsorption of a long-chain fatty acid on the surfaces of the particles. Further, it was difficult to form nano-sized inorganic particles dispersible in a polar solvent by replacing the long-chain fatty acid coats. According to the invention, various surface-coated inorganic particles dispersible in polar solvents can be produced from fatty acid-coated inorganic particles by adding a temporary coating substance such as thiomalic acid to a nonpolar solvent containing fatty acid-coated inorganic particles dispersed therein to replace the fatty acid coats by the temporary coating substance, dispersing the inorganic particles coated with the temporary coating substance in a polar solvent, and then adding a coating substance dispersible in a polar solvent, e.g., citric acid to the obtained dispersion to replace the temporary coating substance coats covering the inorganic particles by the coating substance dispersible in a polar solvent.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • TOKYO INSTITUTE OF TECHNOLOGY
  • 発明者(英語)
  • HANDA, Hiroshi
  • HATAKEYAMA, Mamoru
  • ABE, Masanori
  • SAKAMOTO, Satoshi
  • MASAIKE, Yuka
  • NISHIO, Kosuke
  • KITA, Yoshinori
  • KISHI, Hiroshi
国際特許分類(IPC)
指定国 AE(UTILITY MODEL),AG,AL(UTILITY MODEL),AM(PROVISIONAL PATENT)(UTILITY MODEL),AO(UTILITY MODEL),AT(UTILITY MODEL),AU,AZ(UTILITY MODEL),BA,BB,BG(UTILITY MODEL),BH(UTILITY MODEL),BR(UTILITY MODEL),BW(UTILITY MODEL),BY(UTILITY MODEL),BZ(UTILITY MODEL),CA,CH,CN(UTILITY MODEL),CO(UTILITY MODEL),CR(UTILITY MODEL),CU(INVENTOR'S CERTIFICATE),CZ(UTILITY MODEL),DE(UTILITY MODEL),DK(UTILITY MODEL),DM(UTILITY MODEL),DO(UTILITY MODEL),DZ,EC(UTILITY MODEL),EE(UTILITY MODEL),EG(UTILITY MODEL),ES(UTILITY MODEL),FI(UTILITY MODEL),GB,GD,GE(UTILITY MODEL),GH(UTILITY CERTIFICATE),GM,GT,HN,HR(CONSENSUAL PATENT),HU(UTILITY MODEL),ID,IL,IN,IS,JP(UTILITY MODEL),KE(UTILITY MODEL),KG(UTILITY MODEL),KM,KN,KP(INVENTOR'S CERTIFICATE)(UTILITY MODEL),KR(UTILITY MODEL),KZ(PROVISIONAL PATENT)(UTILITY MODEL),LA,LC,LK,LR,LS(UTILITY MODEL),LT,LU,LY,MA,MD(UTILITY MODEL),ME(PETTY PATENT),MG,MK,MN,MW,MX(UTILITY MODEL),MY(UTILITY-INNOVATION),MZ(UTILITY MODEL),NA,NG,NI(UTILITY MODEL),NO,NZ,OM(UTILITY MODEL),PG,PH(UTILITY MODEL),PL(UTILITY MODEL),PT(UTILITY MODEL),RO,RS(PETTY PATENT),RU(UTILITY MODEL),SC,SD,SE,SG,SK(UTILITY MODEL),SL(UTILITY MODEL),SM,ST,SV(UTILITY MODEL),SY,TJ(UTILITY MODEL),TM(PROVISIONAL PATENT),TN,TR(UTILITY MODEL),TT(UTILITY CERTIFICATE),TZ,UA(UTILITY MODEL),UG(UTILITY CERTIFICATE),US,UZ(UTILITY MODEL),VC(UTILITY CERTIFICATE),VN(PATENT FOR UTILITY SOLUTION),ZA,ZM,ZW,EP(AT,BE,BG,CH,CY,CZ,DE,DK,EE,ES,FI,FR,GB,GR,HR,HU,IE,IS,IT,LT,LU,LV,MC,MT,NL,NO,PL,PT,RO,SE,SI,SK,TR),OA(BF(UTILITY MODEL),BJ(UTILITY MODEL),CF(UTILITY MODEL),CG(UTILITY MODEL),CI(UTILITY MODEL),CM(UTILITY MODEL),GA(UTILITY MODEL),GN(UTILITY MODEL),GQ(UTILITY MODEL),GW(UTILITY MODEL),ML(UTILITY MODEL),MR(UTILITY MODEL),NE(UTILITY MODEL),SN(UTILITY MODEL),TD(UTILITY MODEL),TG(UTILITY MODEL)),AP(BW(UTILITY MODEL),GH(UTILITY MODEL),GM(UTILITY MODEL),KE(UTILITY MODEL),LS(UTILITY MODEL),MW(UTILITY MODEL),MZ(UTILITY MODEL),NA(UTILITY MODEL),SD(UTILITY MODEL),SL(UTILITY MODEL),SZ(UTILITY MODEL),TZ(UTILITY MODEL),UG(UTILITY MODEL),ZM(UTILITY MODEL),ZW(UTILITY MODEL)),EA(AM,AZ,BY,KG,KZ,MD,RU,TJ,TM)
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