公开(公告)号：US11472920B2

公开(公告)日：2022-10-18

申请号：US16683452

申请日：2019-11-14

Applicant: SABIC Global Technologies B.V.

Inventor： Sivakumar Sreeramagiri ,  Samir Anapat ,  Rajesh Chowdhury ,  Ravinath Manchana ,  Bhanu Kiran Vankayala ,  Hareesh Shamrao Deshpande

IPC: C08G65/44

Abstract: A method for preparing a poly(phenylene ether) includes feeding air to a continuous flow reactor that contains a reaction mixture including a phenol, a transition metal catalyst, and an organic solvent; and oxidatively polymerizing the reaction mixture at a specified temperature and pressure to form a poly(phenylene ether). The reaction mixture has a residence time in the continuous flow reactor of less than or equal to 30 minutes. Poly(phenylene ether)s prepared by the method and articles including the poly(phenylene ether)s are also described.

公开(公告)号：US20210040015A1

公开(公告)日：2021-02-11

申请号：US16976340

申请日：2019-04-29

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Sreenivasa Rao Gajula ,  Amit Kumar ,  Ziyad Kottavarithottil ,  Suman Kumar Jana ,  Eswara Rao Mupparaju ,  Vinita Dubey ,  Sivakumar Sreeramagiri

IPC: C07C2/76 ,  B01J29/48 ,  B01J23/28 ,  B01J37/08

Abstract: A process for activating an aromatization catalyst includes contacting an aromatization catalyst with a carburizing gas in a carburization reactor at a carburization pressure in a range of greater than 300 kPa to 800 kPa, or 500 kPa to 600 kPa, to obtain a calcined aromatization catalyst. The carburizing gas provides a carbon source, preferably the carburizing gas comprises at least one of methane, ethane, propane, butane, or carbon monoxide.

公开(公告)号：US11104623B2

公开(公告)日：2021-08-31

申请号：US16976340

申请日：2019-04-29

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Sreenivasa Rao Gajula ,  Amit Kumar ,  Ziyad Kottavarithottil ,  Suman Kumar Jana ,  Eswara Rao Mupparaju ,  Vinita Dubey ,  Sivakumar Sreeramagiri

IPC: C07C2/76 ,  B01J23/28 ,  B01J29/48 ,  B01J37/08

Abstract: A process for activating an aromatization catalyst includes contacting an aromatization catalyst with a carburizing gas in a carburization reactor at a carburization pressure in a range of greater than 300 kPa to 800 kPa, or 500 kPa to 600 kPa, to obtain a calcined aromatization catalyst. The carburizing gas provides a carbon source, preferably the carburizing gas comprises at least one of methane, ethane, propane, butane, or carbon monoxide.

公开(公告)号：US11084764B2

公开(公告)日：2021-08-10

申请号：US16469927

申请日：2017-12-28

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Sreenivasarao Gajula ,  Amit Kumar ,  Ziyad Kottavarithottil ,  Anshita Sudarshan ,  Eswara Rao Mupparaju ,  Suman Kumar Jana ,  Anthonisamy Selvanathan ,  Sivakumar Sreeramagiri

IPC: C07C2/76 ,  B01J29/48 ,  B01J37/18 ,  C10G35/095

Abstract: Described herein is a method for producing a zeolite catalyst useful for aromatization of a lower alkane, a zeolite catalyst useful for aromatization of a lower alkane obtainable by said method and a process for aromatization of a lower alkane using the zeolite catalyst.

公开(公告)号：US20200231750A1

公开(公告)日：2020-07-23

申请号：US16683452

申请日：2019-11-14

Applicant: SABIC Global Technologies B.V.

Inventor： Sivakumar Sreeramagiri ,  Samir Anapat ,  Rajesh Chowdhury ,  Ravinath Manchana ,  Bhanu Kiran Vankayala ,  Hareesh Shamrao Deshpande

IPC: C08G65/44

Abstract: A method for preparing a poly(phenylene ether) includes feeding air to a continuous flow reactor that contains a reaction mixture including a phenol, a transition metal catalyst, and an organic solvent; and oxidatively polymerizing the reaction mixture at a specified temperature and pressure to form a poly(phenylene ether). The reaction mixture has a residence time in the continuous flow reactor of less than or equal to 30 minutes. Poly(phenylene ether)s prepared by the method and articles including the poly(phenylene ether)s are also described.

公开(公告)号：US10544096B2

公开(公告)日：2020-01-28

申请号：US16316539

申请日：2017-07-12

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Sivakumar Sreeramagiri ,  Deshmukh Sandesh Shivajirao ,  Samir Anapat ,  Vishal Keshaorao Karmore ,  Sanjay Katrekar ,  Alok Pal

IPC: C07D209/46 ,  C07D209/44 ,  C08G64/30 ,  C08G64/12

Abstract: A continuous method for the manufacture of a 2-aryl-3,3-bis(hydroxyaryl)phthalimidine comprising continuously heating an anhydride with a phenol in the presence of a catalyst and a first co-catalyst, to form a first reaction mixture comprising a phenolphthalein compound; precipitating the phenolphthalein compound; combining a primary arylamine with an acid catalyst and a second co-catalyst to form a second reaction mixture; adding the phenolphthalein compound to the second reaction mixture; continuously heating the second reaction mixture to provide a third reaction mixture comprising a crude phthalimidine; and treating the crude phthalimidine to remove aminophenol and purify the phthalimidine is provided.