Sabic Global Technologies B.v.

Shpp Global Technologies B.v.

Sivakumar Sreeramagiri

Amit Kumar

Hariharan Ramalingam

Samir Anapat

Rajesh Chowdhury

Suman Kumar Jana

Bhanu Kiran Vankayala

Ziyad Kottavarithottil

Ravinath Manchana

Eswara Rao Mupparaju

Hareesh Shamrao Deshpande

Anshita Sudarshan

Yogesha Subbaiah

Shweta Hegde

Sreenivasarao Gajula

Deshmukh Sandesh Shivajirao

Vishal Keshaorao Karmore

Sanjay Katrekar

Alok Pal

Anthonisamy Selvanathan

Vinita Dubey

Sreenivasa Rao Gajula

Ramesh Narayana

Pooja Mk

Sathappan Arumugam

A method for preparing a poly(phenylene ether) includes feeding an oxygen-containing gas phase to a single continuous flow reactor containing a reaction mixture, and oxidatively polymerizing the reaction mixture to form a poly(phenylene ether) in the single reactor. The reaction mixture includes a phenol, a transition metal catalyst, and an organic solvent. A poly(phenylene ether) made by the method and articles including the poly(phenylene ether) are also disclosed. Methods for quantifying phenol concentration and poly(phenylene ether) molecular weight in the reaction mixture are also discussed.

Method of preparing a poly (phenylene ether), poly(phenylene ether) made thereby, and article comprising the poly(phenylene ether)

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.

Method for preparing a poly(phenylene ether) and poly(phenylene ether) prepared thereby

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.

Process for activating an aromatization catalyst

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.

Process for catalyst activation for lower alkane dehydroaromatization

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.

Continuous methods of manufacture of 2-aryl-3,3-BIS(4-hydroxyaryl)phthalimidines, and polymers derived therefrom

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Bengaluru, India

Sivakumar Sreeramagiri