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公开(公告)号：US12116340B2
公开(公告)日：2024-10-15
申请号：US18069943
申请日：2022-12-21
Applicant: NAN YA PLASTICS CORPORATION
Inventor： Te-Chao Liao , Jung-Jen Chuang , Chung-Yu Chen , Jung-Tsu Wu
IPC: C07C51/56 , C07D307/89
CPC classification number: C07C51/56 , C07D307/89
Abstract: A method for manufacturing methyltetrahydrophthalic anhydride is provided, which includes steps as follows. Maleic anhydride is added into a reactor. Piperylene is added into the reactor, so that the piperylene and the maleic anhydride undergo a first addition reaction. When a conversion rate of the maleic anhydride is more than 25%, the first addition reaction is completed. Isoprene is added into the reactor, so that the isoprene and the maleic anhydride undergo a second addition reaction to obtain a methyltetrahydrophthalic anhydride product. The methyltetrahydrophthalic anhydride product contains 3-methyltetrahydrophthalic anhydride and 4-methyltetrahydrophthalic anhydride.
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公开(公告)号：US11739037B1
公开(公告)日：2023-08-29
申请号：US17991816
申请日：2022-11-21
Applicant: NAN YA PLASTICS CORPORATION
Inventor： Te-Chao Liao , Jung-Jen Chuang , Chung-Yu Chen , Jung-Tsu Wu
CPC classification number: C07C29/20 , B01J8/10 , B01J23/464 , C07C29/20 , C07C35/08
Abstract: A method for manufacturing nonylcyclohexanol is provided. The method includes steps as follows: adding a liquid phase reactant into a reactor, and the liquid phase reactant includes a molten nonylphenol and a catalyst; introducing a gas phase reactant to maintain a pressure of the gas phase reactant to be from 36.5 bar to 70 bar, and the gas phase reactant consists of hydrogen; rotating a hollow stirring shaft of the reactor at a temperature of from 100° C. to 130° C. so that the gas phase reactant is transported through a channel formed in the hollow stirring shaft into the liquid phase reactant for carrying out a reaction; obtaining a product that contains nonylcyclohexanol. A conversion rate of the nonylcyclohexanol is higher than or equal to 99.0%.
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