公开(公告)号：EP3505507A1

公开(公告)日：2019-07-03

申请号：EP19150060.2

申请日：2019-01-02

申请人： Shin-Etsu Chemical Co., Ltd.

发明人： Tachibana, Seiichiro ,  Kori, Daisuke ,  Ogihara, Tsutomu ,  Kitano, Satoru ,  Abe, Yukio ,  Hatakeyama, Fumihiro ,  Kobayashi, Taiki

IPC分类号： C07C37/82 ,  C07C39/14

摘要： The invention provides a method for purifying dihydroxynaphthalene, which is capable of suppressing soft particle generation and obtaining dihydroxynaphthalene serving as a raw material of a resin and composition excellent in filterability. The method for purifying dihydroxynaphthalene includes the step of removing a sulfur content in the dihydroxynaphthalene with an adsorbent, and neutral alumina is used as the adsorbent.

公开(公告)号：EP3505507B1

公开(公告)日：2020-05-27

申请号：EP19150060.2

申请日：2019-01-02

申请人： Shin-Etsu Chemical Co., Ltd.

发明人： Tachibana, Seiichiro ,  Kori, Daisuke ,  Ogihara, Tsutomu ,  Kitano, Satoru ,  Abe, Yukio ,  Hatakeyama, Fumihiro ,  Kobayashi, Taiki

IPC分类号： C07C37/82 ,  C07C39/14 ,  B01D15/08 ,  B01J20/08

公开(公告)号：EP3508919B1

公开(公告)日：2020-07-15

申请号：EP19150061.0

申请日：2019-01-02

申请人： Shin-Etsu Chemical Co., Ltd.

发明人： Kori, Daisuke ,  Tachibana, Seiichiro ,  Ogihara, Tsutomu ,  Kitano, Satoru ,  Abe, Yukio ,  Hatakeyama, Fumihiro ,  Kobayashi, Taiki

IPC分类号： G03F7/09 ,  C08L61/12