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1. 发明专利

JPH05193928A PRODUCTION OF SILICA GLASS POWDER 失效
公开(公告)号：JPH05193928A
公开(公告)日：1993-08-03
申请号：JP790492
申请日：1992-01-20
申请人： TOYOTA MOTOR CORP , SHINETSU CHEMICAL CO
发明人： KAMIYA SUMIO , TANAKA HIDEJI , ABE SAN
IPC分类号： C01B33/18
摘要： PURPOSE:To produce silica glass powder having , and .

2. 发明专利

JPH05193909A PRODUCTION OF METAL OXIDE POWDER 失效
公开(公告)号：JPH05193909A
公开(公告)日：1993-08-03
申请号：JP826192
申请日：1992-01-21
申请人： TOYOTA MOTOR CORP , SHINETSU CHEMICAL CO
发明人： KAMIYA SUMIO , TANAKA HIDEJI , ABE SAN
IPC分类号： B01J19/00 , C01B13/14 , C01B13/32 , C01B33/18 , C01F5/04 , C01F7/42
摘要： PURPOSE:To improve the purity of a synthesized metal oxide powder by heat- treating the metal oxide powder produced in a reactor to volatilize off the impurities. CONSTITUTION:A metal powder and a carrier gas are supplied to a reactor filled with an oxidizing atmosphere. The powder is ignited in the reactor to form a flame, hence the powder is burned, and a metal oxide powder is synthesized. The synthesized metal oxide powder is heat-treated. In this case, the metal oxide powder is separated from the waste combustion gas and recovered at a controlled temp., and the recovered metal oxide powder is heated in a heat-treating furnace. Consequently, the volatile impurities such as fluorine, chlorine or NOx deposited or adsorbed on the metal oxide surface are volatilized off, and a high-purity metal oxide powder is obtained.

3. 发明专利

JPH05193908A PRODUCTION OF METAL OXIDE POWDER 失效
公开(公告)号：JPH05193908A
公开(公告)日：1993-08-03
申请号：JP790392
申请日：1992-01-20
申请人： TOYOTA MOTOR CORP , SHINETSU CHEMICAL CO
发明人： KAMIYA SUMIO , TANAKA HIDEJI , ABE SAN
IPC分类号： C01B13/32 , C01B33/18 , C01F5/04 , C01F7/42
摘要： PURPOSE:To independently control the particle diameter of a metal oxide powder to be produced over a wide range by controlling the supply of a combustion supporting gas in multiple stages to expand or contract the combustion flame. CONSTITUTION:A combustible gas and an initial combustion supporting gas (oxygen) are supplied to a metal powder burner 5 to form an ignition flame, and a metal powder dispersed in a carrier gas is introduced into the ignition flame to form an initial flame I/F close to the burner 5. A combustion supporting gas is then introduced from feed pipes 61a,...65a to form a successive and multistage combustion flame C/F in the extending direction of the initial flame I/F. In this case, the supply and flow rate of the combustion supporting gas from the feed pipes 61a,...65a are controlled to expand or contract the combustion flame, and the particle diameter of the metal oxide powder to be produced is controlled. The particle diameter of the powder is increased as the formed combustion flame is increased in length, and the particle diameter of the powder is increased as the temp. of the combustion flame is raised.

4. 发明专利

JPH06298521A PRODUCTION OF SILICON DIOXIDE POWDER 失效
公开(公告)号：JPH06298521A
公开(公告)日：1994-10-25
申请号：JP154393
申请日：1993-01-08
申请人： TOYOTA MOTOR CORP , SHINETSU CHEMICAL CO , ADO MATETSUKUSU KK
发明人： KAMIYA SUMIO , ABE SAN , TANAKA HIDEJI , HIRANO SHINICHI
IPC分类号： C01B33/18
摘要： PURPOSE:To prevent the residence of phosphorus in silicon dioxide powder as an ionic impurity without using a process such as washing with water even by using inexpensive metallic silicon powder. CONSTITUTION:SiO2 powder is produced by burning powdery mixture of metallic Si powder and >=1wt.% of metallic Al powder. Phosphorus is immobilized in the SiO2 powder in the form of insoluble stable AlPO4 to prevent the formation of phosphoric acid.

5. 发明专利

JPH05196614A QUANTITATIVE ANALYSIS METHOD FOR UNBURNT SUBSTANCE IN METAL OXIDE POWDER 失效
公开(公告)号：JPH05196614A
公开(公告)日：1993-08-06
申请号：JP790292
申请日：1992-01-20
申请人： TOYOTA MOTOR CORP , SHINETSU CHEMICAL CO
发明人： KAMIYA SUMIO , TANAKA HIDEJI , MIYAO SHUICHI , ABE SAN
IPC分类号： G01N31/00 , G01N31/02
摘要： PURPOSE:To provide a quantitative analysis method for analyzing the amount of the unburnt substance remaining in metal oxide powder, capable of determining the amount of the unburnt substance remaining in the produced metal oxide powder, with ease, rapidity, low cost, and high accuracy, without using a time-consuming and expensive chemical analysis or instrumental analysis, etc. CONSTITUTION:In a quantitative analysis of the unburnt substance in the metal oxide powder produced by the manufacture of a metal oxide powder such that a metal powder is ignited so as to form a combustion flame followed by continuously oxidizing and burning the metal powder, the metal oxide powder is mixed with a solvent affinitive to it so as to prepare a suspension. The suspension is subjected to a dispersion processing by means of an ultrasonic cleaner, then being subjected to a classification processing by means of a centrifugal separator, followed by separating the suspension into the layer 11 consisting of a suspension containing the metal oxide powder and the solvent, the layer 12 consisting of the metal oxide powder, and the layer 13 consisting of an unburnt substance. The layer 13 consisting of the unburnt substance is visually compared with a standard specimen prepared in advance, so that the amount of the unburnt substance in the metal oxide powder is determined.

6. 发明专利

JPH05193913A PRODUCTION OF METAL OXIDE POWDER 失效
公开(公告)号：JPH05193913A
公开(公告)日：1993-08-03
申请号：JP2564492
申请日：1992-01-16
申请人： SHINETSU CHEMICAL CO , TOYOTA MOTOR CORP
发明人： KONYA YOSHIHARU , TANAKA HIDEJI , KAMIYA SUMIO , ABE SAN
IPC分类号： C01B13/32 , C01B33/18
摘要： PURPOSE:To control the particle diameter of metal oxide powder when this metal oxide powder is obtd. by the oxidation combustion of metal powder. CONSTITUTION:Metal powder, metal oxide powder and gaseous oxygen are introduced into a flame from a burner formed with combustible gas, the metal powder is continuously burned in the flame and the resulting metal oxide is grown as particles with the metal oxide powder as nuclei to produce metal oxide powder. At this time, the metal oxide powder to be introduced into the flame is fed with the gaseous oxygen as combustion sustaining gas and introduced into the flame from the oxygen feed hole in the burner.

7. 发明专利

JPH05193910A PRODUCTION OF METAL OXIDE POWDER 失效
公开(公告)号：JPH05193910A
公开(公告)日：1993-08-03
申请号：JP828292
申请日：1992-01-21
申请人： TOYOTA MOTOR CORP , SHINETSU CHEMICAL CO
发明人： KAMIYA SUMIO , TANAKA HIDEJI , ABE SAN
IPC分类号： C01B13/32 , C01B13/14 , C01B33/18 , C01F5/04 , C01F7/42
摘要： PURPOSE:To improve the purity of a metal oxide powder to be synthesized at the time of synthesizing the powder in a reactor by washing the metallic material with high-purity water to remove the halogen elements contained in the material. CONSTITUTION:A metal powder and a carrier gas are supplied to a reaction vessel filled with an oxidizing atmosphere to burn the metal powder in the vessel, and a metal oxide powder is synthesized. In this case, a lumpy or powdery material for the metal powder is washed with high-purity water to control the fluoride ion concn. in the extraction water to

8. 发明专利

JPH01179730A PRODUCTION OF QUARTZ GLASS 失效
公开(公告)号：JPH01179730A
公开(公告)日：1989-07-17
申请号：JP346088
申请日：1988-01-11
申请人： SHINETSU CHEMICAL CO
发明人： SHIMIZU TAKAAKI , TANAKA HIDEJI
IPC分类号： C03B8/02 , C03B20/00 , C03C1/00
摘要： PURPOSE:To obtain transparent quartz glass free from bending, distortion, cracking, and foaming with excellent reproducibility in high yield by adding silica particles having a specified diameter to a mixture of the hydrolyzate sol of alkoxysilane by an acidic catalyst and the hydrolyzate sol by an alkaline catalyst, gelling, drying, and sintering the mixture. CONSTITUTION:1mol. of alkoxysilane such as tetramethoxysilane is dissolved in 2-20mol. of water and -10 mol. of the acidic catalyst consisting of an inorg. acid or an org. acid to obtain a sol (A). Meanwhile, 2-20mol. of water, 5-100mol. of solvent, 0.1-10mol. of NH3, and a requisite amt. of dopant are added to 1mol. of alkoxysilane, and the mixture is hydrolyzed at 0-50 deg.C to obtain a sol (B) contg. fine spherical silica particles. The sol (A) and the sol (B), wherein the content of silica is controlled to =100mu diameter are added to the mixed soln., and the mixture is gelled, dried while spending a long time, then sintered, and vitrified.

9. 发明专利

JPS6487523A PRODUCTION OF QUARTZ GLASS 失效
公开(公告)号：JPS6487523A
公开(公告)日：1989-03-31
申请号：JP24668687
申请日：1987-09-30
申请人： SHINETSU CHEMICAL CO
发明人： SHIMIZU TAKAAKI , TANAKA HIDEJI
IPC分类号： C03B8/02 , C03B20/00
摘要： PURPOSE:To prevent cracking, foaming and opacification which are generated in the processed of drying, sintering and vitrification by adding two kinds of spherical silica different in particle diameter into silica sol liquid and concentrating the mixture and settling the spherical silica particles and making them close-packed and allowing them to gel under rise in temp. CONSTITUTION:A soln. contg. spherical fine silica particles having uniform and constant particle diameter is obtained by hydrolyzing alkoxysilane under existence of a basic catalyst while changing reaction conditions. The residual catalyst is removed from this soln. and two kinds of spherical fine silica particles different in particle diameter which are obtained by regulating the soln. to

10. 发明专利

JP2006342101A METHOD FOR PRODUCING ORGANOMETALLIC COMPOUND 审中-公开
公开(公告)号：JP2006342101A
公开(公告)日：2006-12-21
申请号：JP2005169084
申请日：2005-06-09
申请人： SHINETSU CHEMICAL CO
发明人： TSUDERA TAKANOBU , NISHIWAKI HIROZANE , IWAI DAISUKE , TANAKA HIDEJI
IPC分类号： C07F5/00
摘要： PROBLEM TO BE SOLVED: To provide a method for industrially and inexpensively producing an organometallic compound. SOLUTION: In the method for producing the organometallic compound, it is repeated that a trialkylaluminum is reacted with a metal halide to provide the organometallic compound and the trialkylaluminum is regenerated from the reaction products containing a dialkylaluminum halide which is the above by-product and the regenerated trialkylaluminum is again reacted with the metal halide to provide the organometallic compound. COPYRIGHT: (C)2007,JPO&INPIT

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