Patents Assigned to Toa Nenryo Kogyo Kabushiki Kaisha
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Patent number: 4199555Abstract: Nitrogen oxides are removed from gaseous mixtures comprising the same by contacting with a catalyst comprising a base metal component carried on a silica-alumina base in the presence of ammonia.Type: GrantFiled: August 23, 1978Date of Patent: April 22, 1980Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventors: Takuji Itoh, Satoshi Sakurada, Nobuaki Tagaya
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Patent number: 4192732Abstract: Dewaxing aid used in a solvent dewaxing process is recovered in wax bottoms from slack wax by vacuum distilling the slack wax to about 5-10 wt. % bottoms at a temperature no greater than about 320.degree. C. The dewaxing aid-containing wax bottoms is recycled back into the dewaxing process by adding same to the wax-containing oil feed in an amount ranging from about 0.5-5 wt. %. This has been found to be particularly advantageous when the dewaxing aid is an .alpha.-olefin copolymer, a chlorinated paraffin/naphthalene condensation product and mixture thereof because of their thermal stability.Type: GrantFiled: July 21, 1978Date of Patent: March 11, 1980Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventors: Takashi Onodera, Kikuji Komine, Fumio Ohashi
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Patent number: 4192733Abstract: An improved dewaxing aid for solvent dewaxing process comprising a mixture of (A) an .alpha.-olefin polymer having an average molecular weight of from about 10,000 to 1,000,000 and a wide molecular weight distribution exceeding the range of from about 10,000 to 1,000,000 but falling within the range of from about 2,000 to 3,000,000 and (B) an olefin-vinyl acetate copolymer having a vinyl acetate content of from about 15 to 40 wt.% and an average molecular weight of from about 50,000 to 1,000,000. The .alpha.-olefin polymer having a high molecular weight and wide molecular weight distribution, when combined with the olefin-vinyl acetate copolymer, synergistically improves the efficiency of wax separation.Type: GrantFiled: July 21, 1978Date of Patent: March 11, 1980Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventors: Takashi Onodera, Kikuji Komine, Fumio Ohashi, Tsutomu Naito
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Patent number: 4186078Abstract: A catalyst and process are described for hydrofining petroleum wax comprising contacting the wax with hydrogen in the presence of a catalyst comprising at least one metal hydrogenating component on a porous alumina/silica carrier containing from about 0.2 to 5 wt.% of an alkali metal component, the catalyst having a specific surface area of about 200 to 300 m.sup.2 /g and being further characterized in that (a) the volume of pores having a diameter in the range of 60 to 150 A is greater than 80% of the volume of pores having a diameter in the range of 0 to 150 A and (b) the volume of pores having a diameter in the range of 0 to 600 A is in the range of about 0.45 to 0.60 ml/g.Type: GrantFiled: April 20, 1978Date of Patent: January 29, 1980Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventors: Takuji Itoh, Satoshi Sakurada, Shohei Okano, Takashi Obayashi, Takeo Toyoizumi, Osami Iwata
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Patent number: 4183826Abstract: A titanium trichloride catalytic complex is produced by reducing titanium tetrachloride with an organo-metal compound and then treating the resulting reduced solids product with a chlorinated saturated aliphatic hydrocarbon having three to eight carbon atoms in the presence of a complexing agent. The resulting titanium trichloride complex composition, when employed as a co-catalyst with an organo-metal compound for Ziegler-type catalysts in polymerization of .alpha.-olefins, results in uniform polymer grains with unexpectedly high polymerization activity and high stereoregular polymer yielding ratios.Type: GrantFiled: February 9, 1979Date of Patent: January 15, 1980Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventors: Hiroshi Ueno, Eiji Sezaki, Naomi Inaba, Tokuo Makishima, Koh Watanabe, Shozo Wada
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Patent number: 4182691Abstract: A titanium trichloride catalytic complex is produced by reducing titanium tetrachloride with an organo-metal compound and then treating the resulting reduced solids product with a chlorinated saturated hydrocarbon having two carbon atoms in the presence of a complexing agent. The resulting titanium trichloride complex composition, when employed as a co-catalyst with an organo-metal compound for Ziegler-type catalysts in polymerization of .alpha.-olefins, results in uniform polymer grains with unexpectedly high polymerization activity and high stereoregular polymer yielding ratios.Type: GrantFiled: February 9, 1979Date of Patent: January 8, 1980Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventors: Hiroshi Ueno, Naomi Inaba, Tukuo Makishima, Koh Watanabe, Shozo Wada
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Patent number: 4152297Abstract: A method of stabilizing a catalyst for the conversion of aromatic hydrocarbons in the presence of hydrogen such as the isomerization of C.sub.8 aromatic hydrocarbons to increase the content of p-xylene, is carried out by contacting a catalyst in advance of start-up with hydrocarbons in the liquid phase at a temperature preferably of about 50.degree. to about 250.degree. C. and preferably at elevated pressure up to about 50 Kg/cm.sup.2 in the absence of hydrogen; the catalyst being prepared by the acid leaching of a hydrogen form mordenite to produce a mordenite having a silica to alumina molar ratio of about 15 to 21. Preferably, the hydrocarbons used for the contacting have the composition of the feed to be converted.Type: GrantFiled: January 5, 1978Date of Patent: May 1, 1979Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventors: Setsuo Kamiyama, Yukio Nagashima, Hiroshi Furukawa, Katsumi Kaneko
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Patent number: 4146590Abstract: Modified polyolefin having high adhesion strength and less irritating odor during processing is obtained by reacting unsaturated carboxylic acid or its anhydride grafted polyolefin with a bifunctional compound having alcohol groups or amine groups. Preferable unsaturated carboxylic acids are maleic acid, and endobicyclo-[2,2,1]-5-heptene-2,3-dicarboxylic acid. Preferable bifunctional compounds are ethylene glycol, 1,4-butanediol, 1,6-hexanediol, glycerine, ethylene diamine, 1,3-diaminopropane m-phenylene diamine, etc.Type: GrantFiled: June 2, 1975Date of Patent: March 27, 1979Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventors: Noboru Yamamoto, Makoto Yoda, Shozo Wada
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Patent number: 4146529Abstract: A process for the production of modified polyolefins by combining a polyolefin with one or more carboxylic acids or their anhydrides in the presence of a radical producing agent in an extruder and in the presence of an organosilane. If desired glass fibers can also be incorporated at the same time.Type: GrantFiled: September 29, 1977Date of Patent: March 27, 1979Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventors: Noboru Yamamoto, Masaaki Isoi, Maoto Yoda, Shozo Wada
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Patent number: 4139494Abstract: A catalyst and process are described for hydrofining petroleum wax comprising contacting the wax with hydrogen in the presence of a catalyst comprising at least one metal hydrogenating component on a porous alumina/silica carrier containing from about 0.2 to 5 wt.% of an alkali metal component, the catalyst having a specific surface area of about 200 to 300 m.sup.2 /g and being further characterized in that (a) the volume of pores having a diameter in the range of 60 to 150 A is greater than 80% of the volume of pores having a diameter in the range of 0 to 150 A and (b) the volume of pores having a diameter in the range of 0 to 600 A is in the range of about 0.45 to 0.60 ml/g.Type: GrantFiled: September 12, 1977Date of Patent: February 13, 1979Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventors: Takuji Itoh, Satoshi Sakurada, Shohei Okano, Takashi Obayashi, Takeo Toyoizumi, Osami Iwata
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Patent number: 4134856Abstract: A hydro-refining catalyst comprising at least one hydrogenation metal component supported on an alumina or alumina-containing carrier containing from about 5 to about 25 wt. % silica, said catalyst having a specific surface area in the range of from about 250 to about 300 m.sup.2 /g and a pore volume distribution characterized in that (1) the volume of pores having a diameter of 60 to 150 A is at least about 80% of the volume of pores having a diameter of 0 to 150 A, (2) the volume of pores having a diameter of 150 to 300 A is less than about 20% of the volume of pores of 0 to 300 A, (3) the volume of pores having a diameter of 150 to 2,000 A is less than about 0.01 ml/g, (4) the volume of pores having a diameter of 0 to 600 A is in the range of from about 0.45 to about 0.60 ml/g. The catalyst is used in the hydro-refining of heavy hydrocarbon oils containing sulfur, nitrogen and metal contaminants.Type: GrantFiled: December 3, 1976Date of Patent: January 16, 1979Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventors: Takuji Itoh, Satoshi Sakurada, Shohei Okano, Takashi Obayashi
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Patent number: 4127504Abstract: A process for the production of a catalyst component for use in the polymerization of .alpha.-olefins, which comprises reducing titanium tetrachloride with an organo aluminum compound having the general formula Al Rn X.sub.3-n wherein R represents a hydrocarbon group having 1 to 18 carbon atoms, x represents a halogen atom and n represents a suitable numeral between o<n.ltoreq.3, to thus obtain a reduced solid, then removing aluminum compounds contained in said reduced solid and activating with a mixture or a complex of titanium tetrachloride and a dialkyl ether of the general formula R'OR" wherein R' and R" are (a) alkyl groups having 1-4 carbon atoms, (b) normal alkyl groups having five carbon atoms, or (c) alkyl groups having 6-20 carbon atoms.Type: GrantFiled: November 24, 1976Date of Patent: November 28, 1978Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventors: Hiroshi Ueno, Naomi Inaba, Tokuo Makishima, Shozo Wada
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Patent number: 4127505Abstract: The invention relates to a process for the production of a catalyst component for use in the polymerization of .alpha.-olefins, which comprises reacting titanium tetrachloride with a dialkylaluminum monohalide and monoalkylaluminum dihalide, said dialkylaluminum monohalide being in a proportion of at least equimolar to said titanium tetrachloride, to thus obtain a violet reduced solid, then removing aluminum compounds contained in said reduced solid and further activating with a mixture or complex of titanium tetrachloride and a dialkyl ether of the general formula ROR' wherein R and R' are the same or different and are (a) alkyl groups having 1-4 carbon atoms, (b) normal alkyl groups having 5 carbon atoms or (c) alkyl groups having 6-20 carbon atoms and to a catalyst component prepared by the process of the invention.Type: GrantFiled: November 23, 1976Date of Patent: November 28, 1978Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventors: Hiroshi Ueno, Naomi Inaba, Tokyo Makishima, Shozo Wada
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Patent number: 4124536Abstract: Nitrogen oxides are removed from gaseous mixtures comprising the same by contacting with a catalyst comprising a base metal component carried on a silica-alumina base in the presence of ammonia.Type: GrantFiled: July 13, 1976Date of Patent: November 7, 1978Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventors: Takuji Itoh, Satoshi Sakurada, Nobuaki Tagaya
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Patent number: 4120908Abstract: A C.sub.8 aromatic hydrocarbon mixture which typically may consist essentially of xylenes and ethylbenzene, the latter being present in an amount of not more than 40 weight percent, is converted to a product containing an increased proportion of p-xylene by bringing it into contact with an acid leached hydrogen form mordenite having a silica to alumina mole ratio of 15-21 at a temperature in the range of 180.degree. to 250.degree. C. under a pressure of atmospheric to 200 Kg/cm.sup.2. Hydrogen may be present in the system in a mole ratio of hydrogen to C.sub.8 aromatic hydrocarbon mixture of 0-10. The reaction may be conducted in the vapor phase or in the liquid phase.Type: GrantFiled: May 18, 1977Date of Patent: October 17, 1978Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventors: Setsuo Kamiyama, Katsumi Kaneko, Yukio Nagashima, Hiroshi Furukawa, Shozo Wada
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Lubricating oil additive, process for the synthesis thereof and lubricating oil additive composition
Patent number: 4120887Abstract: The invention comprises an ashless additive (I) of the formula: ##STR1## in which Z is oxygen or nitrogen. R is alkyl or alkenyl of more than 40 carbon atoms, inclusive,R' is -(R"'OH).sub.2 when Z is nitrogen or (R"'O).sub.m H when Z is oxygen,R" is -R"'NH(R"'OH) or -(R"'O).sub.m H or mixtures thereof,R"' is an alkylene group of 2 - 3 carbon atoms,M is 5 to 20;Or (II) the corresponding boric acid esters;Or (III) the corresponding boric acid ester of the reaction product of polyalkenylsuccinic anhydride and a N,N,N'-tris (polyoxyalkylene) alkylalkylenediamine;For use in lubricating oils, to methods for preparing the additives, and to lubricating compositions containing the additives.Type: GrantFiled: November 21, 1977Date of Patent: October 17, 1978Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventor: Nobukazu Okamoto -
Lubricating oil additive, process for the synthesis thereof and lubricating oil additive composition
Patent number: 4071548Abstract: The invention comprises an ashless additive (I) of the formula: ##STR1## in which Z is oxygen or nitrogen.R is alkyl or alkenyl of more than 40 carbon atoms, inclusive,R' is --(R"'OH).sub.2 when Z is nitrogen or (R"'O).sub.m H when Z is oxygen,R" is --R"'NH(R"'OH) or --(R"'0).sub.m H or mixtures thereof,R"' is an alkylene group of 2-3 carbon atoms,m is 5 to 20;Or (II) the corresponding boric acid esters;Or (III) the corresponding boric acid ester of the reaction product of polyalkenylsuccinic anhydride and a N,N,N'-tris (polyoxyalkylene) alkylalkylenediamine;For use in lubricating oils, to methods for preparing the additives, and to lubricating compositions containing the additives.Type: GrantFiled: August 16, 1976Date of Patent: January 31, 1978Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventor: Nobukazu Okamoto -
Patent number: 4064069Abstract: This invention relates to a catalyst composition for polymerization of propylene, having high activity and producing polypropylene of high stereoregularity and having a low particle size distribution, which comprises;1. reducing TiCl.sub.4 by diethylaluminum chloride (DEAC), thereby forming a reduced solid (TiCl.sub.3),2. removing the aluminum compounds from the reduced catalyst,3. treating the said reduced solid with the mixture or complex of TiCl.sub.4 and diisoamylether (IAE) and4. separating the solid catalyst from the mixture.The aluminum compounds may be removed by washing with a complexing agent therefor; in a preferred embodiment the complexing agent is di-n-butyl ether.Type: GrantFiled: July 6, 1976Date of Patent: December 20, 1977Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventors: Hiroshi Ueno, Naomi Inaba, Tokuo Makishima, Shozo Wada
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Patent number: 4062804Abstract: The invention relates to a method for preparing a catalyst composition for polymerization of propylene, having high activity and producing polypropylene of high stereoregularity in narrow particle size distribution, which comprises:1. reducing TiCl.sub.4 by a mixture of diethylaluminum chloride (DEAC) and ethylaluminum dichloride (EADC), thereby forming a reduced solid (TiCl.sub.3),2. removing the aluminum compound from the reduced solid;3. treating the said reduced solid with a mixture or complex of TiCl.sub.4 and diisoamylether (IAE), and4. separating the solid catalyst from the solution.Preferably step 2 is performed by washing with a complexing agent for the aluminum compound.Type: GrantFiled: July 8, 1976Date of Patent: December 13, 1977Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventors: Hiroshi Ueno, Naomi Inaba, Tokuo Makishima, Shozo Wada
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Patent number: 4052337Abstract: Nitrogen oxides are removed from gaseous mixtures comprising the same by contacting with a catalyst comprising a base metal component carried on a natural or synthetic zeolite in the presence of ammonia. The alkali metal content of the zeolite is carefully controlled through ion exchange with an alkaline earth metal compound.Type: GrantFiled: March 19, 1976Date of Patent: October 4, 1977Assignee: Toa Nenryo Kogyo Kabushiki KaishaInventors: Eiichiroh Nishikawa, Takuji Itoh, Tsugio Maeshima, Setsuo Kamiyama