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公开(公告)号：US10179758B2
公开(公告)日：2019-01-15
申请号：US15615890
申请日：2017-06-07
Applicant: NAN YA PLASTICS CORPORATION
Inventor： Te-Chao Liao , Jung-Jen Chuang , Cheng-Hsun Chen , Chia-Ruey Tsai , Chung-Yu Chen
Abstract: A method for crystallizing succinic acid includes agitating a succinic acid reaction solution with a jet-flow agitator that is rotated at low speed and has a low volume power density; compared with the conventional agitators, the jet-flow agitator helps increase the uniformity of succinic acid particles, shorten the time required for crystallizing succinic acid, and raise the yield of the crystallized succinic acid as well as purity of crystallized succinic acid having a purity of 99.8-99.9%.
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Patent Agency Ranking
公开(公告)号：US20230279181A1
公开(公告)日：2023-09-07
申请号：US17739212
申请日：2022-05-09
Applicant: NAN YA PLASTICS CORPORATION
Inventor： Te-Chao Liao , Jung-Jen Chuang , Chia-Ruey Tsai
CPC classification number: C08G65/485 , B01J8/087 , B01J8/10 , C08G65/44 , B01J2208/00141 , B01J2208/0015
Abstract: A method for producing polyphenylene ether amine includes following steps. In step (a), a hydrogenation reaction tank is provided; a guided gas stirrer is disposed in the hydrogenation reaction tank. In step (b), a reaction solution is placed in the hydrogenation reaction tank, and the reaction solution is nitro polyphenylene ether dissolved in a solvent. In step (c), a hydrogenation catalyst is added to the reaction solution. In step (d), a hydrogen gas is introduced into the hydrogenation reaction tank. In step (e), the guided gas stirrer is activated. In step (f), a hydrogenation reaction is carried out on the conditions that a reaction temperature is 50-200° C. and a reaction time is 1-20 hours, so as to hydrogenate the nitro polyphenylene ether in the reaction solution to polyphenylene ether amine. In step (g), the reaction solution is cooled down to a room temperature; the hydrogenation catalyst is removed.
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3.发明授权公开(公告)号：US10781159B2
公开(公告)日：2020-09-22
申请号：US16656883
申请日：2019-10-18
Applicant: NAN YA PLASTICS CORPORATION
Inventor： Te-Chao Liao , Jung-Jen Chuang , Chung-Yu Chen , Chia-Ruey Tsai , Sung-Chieh Chao
IPC: C07C67/303 , B01J23/46 , B01J21/04 , B01J8/10 , B01J8/08
Abstract: A hydrogenation method for increasing the yield of cyclohexane-1,4-dicarboxylic acid diisooctyl ester is provided. The hydrogenation method uses a hydrogenating reaction tank, which is equipped with a hollow-shaft gas-introducing mixer having air-extracting, air-exhausting and mixing functions, to allow hydrogen gas to be uniformly dispersed in a reaction solution. A ruthenium-on-alumina (Ru/Al2O3) hydrogenation catalyst can be used for carrying out a hydrogenation reaction under gentle conditions. Therefore, the hydrogenation catalyst can be used in a reduced amount, the risk of side reaction(s) can be reduced, and the yield of cyclohexane-1,4-dicarboxylic acid diisooctyl ester can reach at least 99% with a cis isomer proportion of at least 85.0%. The hydrogenation method shows extremely high economic benefit.
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公开(公告)号：US12110365B2
公开(公告)日：2024-10-08
申请号：US17739212
申请日：2022-05-09
Applicant: NAN YA PLASTICS CORPORATION
Inventor： Te-Chao Liao , Jung-Jen Chuang , Chia-Ruey Tsai
CPC classification number: C08G65/485 , B01J8/087 , B01J8/10 , C08G65/44 , B01J2208/00141 , B01J2208/0015
Abstract: A method for producing polyphenylene ether amine includes following steps. In step (a), a hydrogenation reaction tank is provided; a guided gas stirrer is disposed in the hydrogenation reaction tank. In step (b), a reaction solution is placed in the hydrogenation reaction tank, and the reaction solution is nitro polyphenylene ether dissolved in a solvent. In step (c), a hydrogenation catalyst is added to the reaction solution. In step (d), a hydrogen gas is introduced into the hydrogenation reaction tank. In step (e), the guided gas stirrer is activated. In step (f), a hydrogenation reaction is carried out on the conditions that a reaction temperature is 50-200 degrees Celsius and a reaction time is 1-20 hours, so as to hydrogenate the nitro polyphenylene ether in the reaction solution to polyphenylene ether amine. In step (g), the reaction solution is cooled down to a room temperature; the hydrogenation catalyst is removed.
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5.发明申请公开(公告)号：US20200172463A1
公开(公告)日：2020-06-04
申请号：US16656883
申请日：2019-10-18
Applicant: NAN YA PLASTICS CORPORATION
Inventor： Te-Chao Liao , Jung-Jen Chuang , Chung-Yu Chen , Chia-Ruey Tsai , Sung-Chieh Chao
IPC: C07C67/303 , B01J23/46 , B01J21/04 , B01J8/10 , B01J8/08
Abstract: A hydrogenation method for increasing the yield of cyclohexane-1,4-dicarboxylic acid diisooctyl ester is provided. The hydrogenation method uses a hydrogenating reaction tank, which is equipped with a hollow-shaft gas-introducing mixer having air-extracting, air-exhausting and mixing functions, to allow hydrogen gas to be uniformly dispersed in a reaction solution. A ruthenium-on-alumina (Ru/Al2O3) hydrogenation catalyst can be used for carrying out a hydrogenation reaction under gentle conditions. Therefore, the hydrogenation catalyst can be used in a reduced amount, the risk of side reaction(s) can be reduced, and the yield of cyclohexane-1,4-dicarboxylic acid diisooctyl ester can reach at least 99% with a cis isomer proportion of at least 85.0%. The hydrogenation method shows extremely high economic benefit.
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公开(公告)号：US10189766B2
公开(公告)日：2019-01-29
申请号：US15687608
申请日：2017-08-28
Applicant: NAN YA PLASTICS CORPORATION
Inventor： Te-Chao Liao , Jung-Jen Chuang , Chung-Yu Chen , Chia-Ruey Tsai , Sung-Chieh Chao
Abstract: A process for producing 2-ethylhexanal involves performing reaction using a reaction tank equipped with a gas-introducing mixer having extracting, exhausting, and stirring functions in the presence of a palladium on carbon catalyst having a carbon carrier with lower impurity content and higher specific surface area for hydrogenation, and introducing hydrogen gas evenly into reaction liquid; resulted in that the process minimizes operational pressure for hydrogenation and increases a yield of 2-ethylhexanal at least up to 98.0%.
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