Sabic Global Technolgoies B.v.

Shpp Global Technologies B.v.

Saudi Basic Industries Corporation

Hareesh Shamrao Deshpande

Roy Ray Odle

Thomas Link Guggenheim

Surya Prakasa Rao Daliparthi

Javier Nieves Remacha

Bernabe Quevedo Sanchez

Sivakumar Periyasamy

Siva Kumar Sreeramagiri

Sunil S Dhumal

Srinivas Mahesh Kumar

Juan J Rodriguez Ordonez

Maria Patricia Forcen Jimenez

Jose Roman Galdamez

Ganesh Kannan

Husnu Alp Alidedeoglu

Viswanathan Kalyanaraman

Tukaram Gunale

Rajesh Chowdhury

Darshan Jayanna

Sivakumar Sreeramagiri

Robert John Werling

Samir Anapat

Belinda Duckworth

Bhanu Kiran Vankayala

Ravi Gautam

Gregory L Hemmer

Juan Rodriguez Ordonez

Jose Roman Galdamez Pena

Aaron Matthew Royer

Ravinath Manchana

Carlos Sanjuan Fernandez

Jorge Jimenez Umana

Ekrem Mehmet Morali

Sivakumar P

Carmen Rocío Misiego Arpa

Mahesh Srinivas Kumar

Brennan Alexander Smith

Dhumal Sunil S

Hendrich Chiong

Miguel Angel Navarro De Castro

A method for producing an aromatic dianhydride includes reacting an aromatic diimide with a substituted or unsubstituted phthalic anhydride in an aqueous medium in the presence of an amine exchange catalyst to provide an aqueous reaction mixture including an N-substituted phthalimide, an aromatic tetraacid salt, and at least one of an aromatic triacid salt and an aromatic imide diacid salt. The method further includes removing the phthalimide from the aqueous reaction mixture by extracting the aqueous reaction mixture with an organic solvent in a first extractor for a first time period, at a first extraction temperature and subsequent to the first time period, extracting the aqueous reaction mixture with an organic solvent in a second extractor for a second time period, at a second extraction temperature. The aromatic tetraacid salt is converted to the corresponding aromatic dianhydride. Aromatic dianhydrides prepared according to the method are also described.

Method for isolation of a dianhydride and dianhydrides prepared by the method

A polyetherimide of improved color and processes for preparing the polyetherimide are disclosed.

Process to make low color polyetherimide by halo-displacement and low color polyetherimide

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 method of preparing a polyetherimide and an improved polyetherimide are disclosed. Low color polyetherimides are disclosed along with process improvements which produce the reduced color of the final product polymers.

Polyetherimide with improved color, and methods of manufacture thereof

A method of manufacturing polyimide particles includes combining a polyimide solution including a polyimide and an organic solvent with an aqueous solution including water in the presence of an emulsifying surfactant at a shear rate from 1,000 to 3,000 revolutions per minute to form an emulsion. The method further includes removing the organic solvent to form an aqueous polymer dispersion including polyimide particles, and recovering the polyimide particles. The polyimide particles have a spherical morphology and a volume based D10 diameter from 3 to 50 micrometers, a volume based D90 diameter from 3 to 80 micrometers, and a volume based D100 diameter from 3 to 100 micrometers.

Process of making polyimide micronized particles, particles formed therefrom, and articles prepared therefrom

Biodegradable compositions containing an aliphatic-aromatic copolyester derived from aromatic polyesters. Methods of making the compositions through an in situ phosphorus containing titanium based catalyst and articles made from the compositions.

Method for the preparation of (polybutylene-co-adipate terephthalate) through the in situ phosphorus containing titanium based catalyst

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Bengaluru, India

Hareesh Shamrao Deshpande