Patents by Inventor Yoichi Umehara
Yoichi Umehara has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11065607Abstract: A vinylpyridine resin for a catalyst support; a method for producing thereof; and a catalyst for carbonylation of methanol are disclosed. The vinylpyridine resin has: content of nitrogen derived from a pyridine group of 3.00% by mass or more and 8.00% by mass or less; degree of crosslinking of 35% by mole or more and 70% by mole or less; molar ratio C/N of carbon atoms to nitrogen atoms of 12.00 or more and 36.00 or less; total pore volume of 0.20 cc/g or more and 0.45 cc/g or less; specific surface area of 70.0 m2/g or more and 280 m2/g or less; average pore diameter of 5.0 nm or more and 25.0 nm or less; and proportion of a volume of pores having a pore diameter of 10 nm or more to a volume of the whole pores of 4.0% or more and 90.0% or less.Type: GrantFiled: March 7, 2017Date of Patent: July 20, 2021Assignee: CHIYODA CORPORATIONInventors: Chikako Hashimoto, Ryuichi Kanai, Zhixiong You, Tetsuro Matsumura, Yoichi Umehara
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Publication number: 20200290028Abstract: A vinylpyridine resin for a catalyst support; a method for producing thereof; and a catalyst for carbonylation of methanol are disclosed. The vinylpyridine resin has: content of nitrogen derived from a pyridine group of 3.00% by mass or more and 8.00% by mass or less; degree of crosslinking of 35% by mole or more and 70% by mole or less; molar ratio C/N of carbon atoms to nitrogen atoms of 12.00 or more and 36.00 or less; total pore volume of 0.20 cc/g or more and 0.45 cc/g or less; specific surface area of 70.0 m2/g or more and 280 m2/g or less; average pore diameter of 5.0 nm or more and 25.0 nm or less; and proportion of a volume of pores having a pore diameter of 10 nm or more to a volume of the whole pores of 4.0% or more and 90.0% or less.Type: ApplicationFiled: March 7, 2017Publication date: September 17, 2020Applicants: CHIYODA CORPORATION, CHIYODA CORPORATIONInventors: Chikako Hashimoto, Ryuichi Kanai, Zhixiong You, Tetsuro Matsumura, Yoichi Umehara
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Patent number: 9926397Abstract: A vinylpyridine resin that is hardly pulverized and thermally decomposed such that the degradation of the catalytic activity is suppressed while having a pore volume and a specific surface area to maintain a sufficient catalytic activity, and also a method of manufacturing the vinylpyridine resin are provided. The resin represents: a volume ratio of the pores having a diameter of 3 through 5 nm to all the pores of not less than 4% and not more than 60%; a total pore volume of not less than 0.15 cc/g and not more than 0.35 cc/g; and a specific surface area of not less than 20 m2/g and not more than 100 m2/g. The resin can be manufactured by using a poor solvent and not less than 50 wt % and not more than 90 wt % of a good solvent as porous agent.Type: GrantFiled: February 10, 2012Date of Patent: March 27, 2018Assignee: CHIYODA CORPORATIONInventors: Zhixiong You, Takeshi Minami, Chikako Hashimoto, Yoichi Umehara
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Patent number: 9662646Abstract: An aldehyde adsorbent that can adsorb and remove aldehyde from a carboxylic acid-containing liquid is provided. The aldehyde adsorbent is an aldehyde adsorbent for adsorbing aldehyde in a carboxylic acid-containing liquid containing aldehyde, including a cation exchange resin ion-exchanged with a polyvalent amine in 1 to 99% by mol of the total exchange capacity.Type: GrantFiled: June 3, 2014Date of Patent: May 30, 2017Assignee: CHIYODA CORPORATIONInventors: Zhixiong You, Yoichi Umehara, Tetsuro Matsumura, Takeshi Minami
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Patent number: 9638684Abstract: Provided is a method of evaluating a resin capable of quantitatively evaluating a deterioration degree of the resin with high accuracy and ease. The method includes evaluating the resin based on a shift of a characteristic peak representing a deterioration degree of the resin, the peak being observed in thermal analysis of the resin by a temperature increase, to lower temperatures.Type: GrantFiled: November 19, 2014Date of Patent: May 2, 2017Assignee: CHIYODA CORPORATIONInventors: Zhixiong You, Ryuichi Kanai, Yoichi Umehara, Takeshi Minami
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Patent number: 9440902Abstract: To provide a production method for suppressing the reduction in production rate of a carbonyl compound due to transferring a noble metal component into liquid phase. A method for producing a carbonyl compound, including: a reaction step of reacting a carbonylation raw material with CO in liquid phase including a solid catalyst having noble metal complex on a resin carrier containing quaternized nitrogen to produce a carbonyl compound; a distillation step of distilling a reaction product liquid to recover gas phase distillate including the carbonyl compound; and a circulation step of circulating a bottom product from the distillation to reaction step. After part of the bottom product contacts with an acidic cation-exchange resin to remove nitrogen compound, liquid having higher moisture concentration than the bottom product contacts with the resin to extract noble metal complex captured by oligomer adsorbing the resin, and the complex is returned to the reaction step.Type: GrantFiled: June 3, 2014Date of Patent: September 13, 2016Assignee: CHIYODA CORPORATIONInventors: Zhixiong You, Yoichi Umehara, Tetsuro Matsumura, Takeshi Minami
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Publication number: 20160257578Abstract: Disclosed herein is a water treatment process for efficiently removing oils from oil-containing water. The water treatment process is a method for treating oil-containing water, comprising the steps of: preparing an oil-adsorbing material that is made of a lipophilic resin such as a pyridine resin and that has many pores in its surface and bears hydrophilic groups on an inner surface of the pores; and bringing oil-containing water into contact with the surface of the oil-adsorbing material. The step of preparing an oil-adsorbing material includes the step of converting some of hydrophobic groups, such as nitrogen-containing aromatic rings, on the inner surface of the pores to hydrophilic groups such as quaternized amine or sulfonic acid.Type: ApplicationFiled: July 15, 2014Publication date: September 8, 2016Inventors: Zhixiong You, Yoichi Umehara, Masayo Shinohara, Kazushige Kawamura, Takeshi Minami
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Publication number: 20160130207Abstract: To provide a production method for suppressing the reduction in production rate of a carbonyl compound due to transferring a noble metal component into liquid phase. A method for producing a carbonyl compound, including: a reaction step of reacting a carbonylation raw material with CO in liquid phase including a solid catalyst having noble metal complex on a resin carrier containing quaternized nitrogen to produce a carbonyl compound; a distillation step of distilling a reaction product liquid to recover gas phase distillate including the carbonyl compound; and a circulation step of circulating a bottom product from the distillation to reaction step. After part of the bottom product contacts with an acidic cation-exchange resin to remove nitrogen compound, liquid having higher moisture concentration than the bottom product contacts with the resin to extract noble metal complex captured by oligomer adsorbing the resin, and the complex is returned to the reaction step.Type: ApplicationFiled: June 3, 2014Publication date: May 12, 2016Applicant: CHIYODA CORPORATIONInventors: Zhixiong You, Yoichi Umehara, Tetsuro Matsumura, Takeshi Minami
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Publication number: 20160121320Abstract: An aldehyde adsorbent that can adsorb and remove aldehyde from a carboxylic acid-containing liquid is provided. The aldehyde adsorbent is an aldehyde adsorbent for adsorbing aldehyde in a carboxylic acid-containing liquid containing aldehyde, including a cation exchange resin ion-exchanged with a polyvalent amine in 1 to 99% by mol of the total exchange capacity.Type: ApplicationFiled: June 3, 2014Publication date: May 5, 2016Applicant: CHIYODA CORPORATIONInventors: Zhixiong You, Yoichi Umehara, Tetsuro Matsumura, Takeshi Minami
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Publication number: 20150147816Abstract: Provided is a method of evaluating a resin capable of quantitatively evaluating a deterioration degree of the resin with high accuracy and ease. The method includes evaluating the resin based on a shift of a characteristic peak representing a deterioration degree of the resin, the peak being observed in thermal analysis of the resin by a temperature increase, to lower temperatures.Type: ApplicationFiled: November 19, 2014Publication date: May 28, 2015Applicant: CHIYODA CORPORATIONInventors: Zhixiong You, Ryuichi Kanai, Yoichi Umehara, Takeshi Minami
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Publication number: 20140316071Abstract: According to a method for producing acetic acid by carbonylation of methanol characterized in that an acid having an acid dissociation constant (pKa) smaller than the constant of acetic acid is allowed to be present in the reaction system, acetic acid can be produced by the reaction of methanol and carbon monoxide in a reaction liquid in the presence of a solid catalyst containing rhodium and alkyl iodide, to achieve an enhanced reaction rate of carbonylation of methanol in producing acetic acid in the region at a high carbonylation degree (Ca>0.8 mol/mol) for more efficient production of acetic acid.Type: ApplicationFiled: July 3, 2014Publication date: October 23, 2014Applicant: CHIYODA CORPORATIONInventors: Zhixiong You, Takeshi Minami, Chunji Yin, Yoichi Umehara, Tetsuro Matsumura, Chikako Hashimoto, Yasuo Hosono
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Patent number: 8802893Abstract: According to a method for producing acetic acid by carbonylation of methanol characterized in that an acid having an acid dissociation constant (pKa) smaller than the constant of acetic acid is allowed to be present in the reaction system, acetic acid can be produced by the reaction of methanol and carbon monoxide in a reaction liquid in the presence of a solid catalyst containing rhodium and alkyl iodide, to achieve an enhanced reaction rate of carbonylation of methanol in producing acetic acid in the region at a high carbonylation degree (Ca>0.8 mol/mol) for more efficient production of acetic acid.Type: GrantFiled: February 8, 2011Date of Patent: August 12, 2014Assignee: Chiyoda CorporationInventors: Zhixiong You, Takeshi Minami, Chunji Yin, Yoichi Umehara, Tetsuro Matsumura, Chikako Hashimoto, Yasuo Hosono
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Publication number: 20130209768Abstract: A vinylpyridine resin that is hardly pulverized and thermally decomposed such that the degradation of the catalytic activity is suppressed while having a pore volume and a specific surface area to maintain a sufficient catalytic activity, and also a method of manufacturing the vinylpyridine resin are provided. The resin represents: a volume ratio of the pores having a diameter of 3 through 5 nm to all the pores of not less than 4% and not more than 60%; a total pore volume of not less than 0.15 cc/g and not more than 0.35 cc/g; and a specific surface area of not less than 20 m2/g and not more than 100 m2/g. The resin can be manufactured by using a poor solvent and not less than 50 wt % and not more than 90 wt % of a good solvent as porous agent.Type: ApplicationFiled: February 10, 2012Publication date: August 15, 2013Applicant: CHIYODA CORPORATIONInventors: Zhixiong You, Takeshi Minami, Chikako Hashimoto, Yoichi Umehara
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Publication number: 20120010371Abstract: According to a method for producing acetic acid by carbonylation of methanol characterized in that an acid having an acid dissociation constant (pKa) smaller than the constant of acetic acid is allowed to be present in the reaction system, acetic acid can be produced by the reaction of methanol and carbon monoxide in a reaction liquid in the presence of a solid catalyst containing rhodium and alkyl iodide, to achieve an enhanced reaction rate of carbonylation of methanol in producing acetic acid in the region at a high carbonylation degree (Ca>0.8 mol/mol) for more efficient production of acetic acid.Type: ApplicationFiled: February 8, 2011Publication date: January 12, 2012Applicant: CHIYODA CORPORATIONInventors: Zhixiong You, Takeshi Minami, Chunji Yin, Yoichi Umehara, Tetsuro Matsumura, Chikako Hashimoto, Yasuo Hosono
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Patent number: 7985878Abstract: An iodide compound is adsorbed and removed from an organic acid containing the iodide compound as an impurity by passing the organic acid through a packed bed of a cation-exchange resin having silver ion carried thereon at 50° C. or lower. The cation-exchange resin is a macroporous-type resin with an average particle size of 0.3 to 0.6 mm and an average pore size of 15 to 28 nm, and silver ion substitutes for 40 to 60% of the active site.Type: GrantFiled: June 29, 2007Date of Patent: July 26, 2011Assignee: Chiyoda CorporationInventors: Yoichi Umehara, Takeshi Minami, Susumu Yamamoto, Haruto Kobayashi, Yasuo Hosono
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Publication number: 20090259072Abstract: An iodide compound is adsorbed and removed from an organic acid containing the iodide compound as an impurity by passing the organic acid through a packed bed of a cation-exchange resin having silver ion carried thereon at 50° C. or lower. The cation-exchange resin is a macroporous-type resin with an average particle size of 0.3 to 0.6 mm and an average pore size of 15 to 28 nm, and silver ion substitutes for 40 to 60% of the active site.Type: ApplicationFiled: June 29, 2007Publication date: October 15, 2009Applicant: CHIYODA CORPORATIONInventors: Yoichi Umehara, Takeshi Minami, Susumu Yamamoto, Haruto Kobayashi, Yasuo Hosono
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Patent number: 6616905Abstract: Active carbon catalyst for recovering and removing sulfur oxides contained in flue gas by turning them into sulfuric acid by a catalytic desulfurization reaction. Powdery active carbon and fluororesin are kneaded by shearing force before being molded to a desired profile so that the inter-particulate gaps of powdery active carbon particles are made water-repellent. Flue gas preferably flows downwardly through a tower filled with such an active carbon catalyst, which is made to show a honeycomb structure having surfaces running only in a direction parallel to the flow. The activity of the catalyst maintains an enhanced level if dilute sulfuric acid or water is introduced into the active carbon from the top of the tower to cleanse the surface of the active carbon catalyst so that the catalyst layer is prevented from being clogged and contaminated by ashes and soot contained in flue gas.Type: GrantFiled: October 3, 2000Date of Patent: September 9, 2003Assignee: Chiyoda CorporationInventors: Kazushige Kawamura, Yoichi Umehara, Dai Takeda, Osamu Togari, Naonori Sonehara, Hiroaki Nishijima, Sachio Asaoka