Sabic Global Technologies B.v.

Shpp Global Technologies B.v.

Samir Anapat

Martin H Oyevaar

Tukaram Gunale

Sivakumar Sreeramagiri

Rajesh Chowdhury

Bhanu Kiran Vankayala

Ravinath Manchana

Hareesh Shamrao Deshpande

Shweta Hegde

Arun Vasant Manchekar

Yogesha Subbaiah

Ramesh Narayana

Alok Pal

Deshmukh Sandesh Shivajirao

Vishal Keshaorao Karmore

Fernan Mateos Salvador

Sanjay Katrekar

Rayees Ahamed Imam

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 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

Various embodiments disclosed relate to methods and apparatus for synthesizing various biphenols. In various embodiments, the present invention provides a method of making a bisphenol including feeding a phenol at or proximate to the first end of a reactor column including a first end and a second end and including a solid catalyst distributed in multiple locations between the first end and the second end of the reactor column. The method includes feeding an oxomethylene compound to the reactor column at a first location that is at or proximate the first end and at one or more additional locations between the first location and the second end of the reactor column, and removing at least some water from the reactor column. The method includes removing a product composition including a diphenolmethylene product at or proximate to the second end of the reactor column.

Sythesis of bisphenols

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Bengaluru, India

Samir Anapat