公开(公告)号：US20210009514A1

公开(公告)日：2021-01-14

申请号：US16955511

申请日：2018-07-12

申请人： ZHEJIANG NHU COMPANY LTD. ,  ZHEJIANG UNIVERSITY ,  ZHEJIANG NHU SPECIAL MATERIALS CO., LTD.

发明人： Zhirong CHEN ,  Woyuan LI ,  Hong YIN ,  Guíyang ZHOU ,  Haoran LI ,  Shuaifeng PAN ,  Ming LIAN ,  Guangde QIN ,  Qichuan LI

IPC分类号： C07C319/06

摘要： The present disclosure discloses a preparation method for 4-phenylthio-benzenethiol. The preparation method comprises the following steps: subjecting phenyl sulfide as a raw material to a halogenation reaction to obtain 4-halophenyl sulfide; subjecting the 4-halophenyl sulfide to a sulfhydrylation reaction to obtain a 4-phenylthio-phenylthiolate; and subjecting the 4-phenylthio-phenylthiolate to acidification. The preparation method of the present disclosure avoids the use of materials such as thiophenol which pollutes the environment, and realizes efficient recycling of the reaction materials, solvents, water and the like. The preparation method of the present disclosure is a green process for the synthesis of 4-phenylthio-phenylthiol without organic waste, waste acid and waste water discharge.

公开(公告)号：US20200347186A1

公开(公告)日：2020-11-05

申请号：US16957934

申请日：2018-07-12

申请人： ZHEJIANG NHU COMPANY LTD. ,  ZHEJIANG UNIVERSITY ,  ZHEJIANG NHU SPECIAL MATERIALS CO., LTD.

发明人： Woyuan LI ,  Hong YIN ,  Zhirong CHEN ,  Baishan HU ,  Guiyang ZHOU ,  Hangjun DENG ,  Ming LIAN ,  Xiongwei ZHANG ,  Qichuan LI ,  Jiang ZHAO

IPC分类号： C08G75/0254 ,  C08G75/029 ,  C08G75/0213

摘要： The present application relates to a method for extracting coenzyme Q10 and a phospholipid from a coenzyme Q10 fermentation bacterium powder. The method is characterized in that the fermentation bacterium powder of a coenzyme Q10 production strain is subjected to extraction with a mixed solvent of which the three-dimensional Hansen solubility parameter is between 21 and 23 (J/cm3)1/2 and the hydrogen bonding solubility parameter thereof is between 10 and 12 (J/cm3)1/2. The present invention can efficiently extract two products, namely coenzyme Q10 and a phospholipid, from the coenzyme Q10 fermentation bacterium powder; the process thereof is highly operable, easy to be industrialized, and can provide a product with high purity and yield, having great economic benefit.

公开(公告)号：US20230019023A1

公开(公告)日：2023-01-19

申请号：US17952395

申请日：2022-09-26

申请人： ZHEJIANG NHU CO., LTD. ,  ZHEJIANG UNIVERSITY ,  ZHEJIANG NHU SPECIAL MATERIALS CO., LTD.

发明人： Zhirong CHEN ,  Woyuan LI ,  Hong YIN ,  Baishan HU ,  Guiyang ZHOU ,  Ming LIAN ,  Guangde QIN ,  Hangjun DENG ,  Xiongwei ZHANG ,  Guisheng QIU ,  Kejun WU

IPC分类号： C08G75/029 ,  C08G75/0209 ,  C08G75/0259 ,  C08J5/18

摘要： A sulfur-containing compound and a halogenated aromatic compound are used as raw materials, with an alkaline compound and a fatty acid as polycondensation aids to carry out a polycondensation reaction. After purification treatment, a primary polyphenylene sulfide is obtained which then reacts with a chain extender at high temperature to form a high molecular weight polyphenylene sulfide resin. A preparation method has the advantages of being high yield, low cost, and capable of selectively and controllably preparing polyphenylene sulfide resins with different melt viscosities and molecular weights, and the obtained polyphenylene sulfide resins have excellent heat resistance. The linear high molecular weight polyphenylene sulfide resin with high thermal stability can be used for producing plates, pipes and rods, can be mechanically processed like metals, such as cutting, grinding, polishing, drilling, and can be used to produce fibers, membranes, films, and are applicable to automotive parts, electronic/electrical equipment, chemical and machinery.

公开(公告)号：US20210047471A1

公开(公告)日：2021-02-18

申请号：US16968907

申请日：2019-08-23

申请人： ZHEJIANG NHU CO., LTD. ,  Zhejiang University ,  ZHEJIANG NHU SPECIAL MATERIALS CO., LTD.

发明人： Zhirong CHEN ,  Woyuan LI ,  Hong YIN ,  Baishan HU ,  Guiyang ZHOU ,  Ming LIAN ,  Guangde QIN ,  Hangjun DENG ,  Xiongwei ZHANG ,  Guisheng QIU ,  Kejun WU

IPC分类号： C08G75/029 ,  C08G75/0209 ,  C08G75/0259 ,  C08J5/18

摘要： The disclosure relates to a high molecular weight polyphenylene sulfide resin and a preparation method and application thereof. The disclosure uses a sulfur-containing compound and a halogenated aromatic compound as raw materials, an alkaline compound and a fatty acid as polycondensation aids to carry out a polycondensation reaction. After purification treatment, a primary polyphenylene sulfide is obtained. Then, the primary polyphenylene sulfide reacts with a chain extender at a high temperature to form a high molecular weight polyphenylene sulfide resin. The preparation method of the disclosure has the advantages of high yield, low cost, and is capable of selectively and controllably preparing polyphenylene sulfide resins with different melt viscosities and molecular weights, and the obtained polyphenylene sulfide resins have excellent heat resistance. The linear high molecular weight polyphenylene sulfide resin with high thermal stability obtained by the disclosure can be used for producing plates, pipes and rods, can be mechanically processed like metals, such as cutting, grinding, polishing, drilling, and can be used to produce fibers, membranes, films, and especially are applicable to automotive parts, electronic/electrical equipment, chemical and machinery industry.