公开(公告)号：US20180346398A1

公开(公告)日：2018-12-06

申请号：US15990871

申请日：2018-05-29

Applicant: NAN YA PLASTICS CORPORATION

Inventor： Te-Chao LIAO ,  Jung-Jen CHUANG ,  Chung-Yu CHEN ,  Chia-Ruey TSAI ,  Sung-Chieh CHAO

IPC: C07C29/20 ,  B01J23/46

Abstract: A hydrogenation method for preparing HBPA includes placing a BPA reaction liquid into a hydrogenation vessel with a hollow-shaft stirrer installed inside; starting the hollow-shaft stirrer to stir the BPA reaction liquid and simultaneously allowing hydrogen gas evenly distributed over and contact well with the BPA reaction liquid; in the presence of a single-metallic Ru/Al2O3 hydrogenation catalyst to proceed with a catalytic hydrogenation at low temperature and low pressure to produce HBPA, the HBPA has a yield of 99.7% or more, and particularly having a trans/trans isomer ratio above 63%.

公开(公告)号：US20180057438A1

公开(公告)日：2018-03-01

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

IPC: C07C45/62 ,  C07C45/79 ,  B01J23/44 ,  B01J21/18 ,  B01J35/00 ,  B01J35/02

CPC classification number: C07C45/62 ,  B01J21/18 ,  B01J23/44 ,  B01J35/0006 ,  B01J35/026 ,  B01J35/1023 ,  B01J35/1028 ,  C07C45/79 ,  C07C47/02

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%.