Sasi Kannamkumarath

US Patent:

20190263963, Aug 29, 2019

Filed:

Mar 11, 2019

Appl. No.:

16/298235

Inventors:

- Bergen op Zoom, NL
Prashant Kumar - Evansville IN, US
Brian Bougher - Evansville IN, US
Cornelis Adrianus Maria van Gool - Kapellen, BE
Sasi Sethumadhavan Kannamkumarath - Evansville IN, US
Bing Zhou - Evansville IN, US

International Classification:

C08G 63/183
C08G 63/78

Abstract:

Disclosed is a continuous process and device for making polybutylene terephthalate (PBT) resin, particularly high molecular weight PBT resin. Also disclosed are a device for conducting the process, and a monitoring process for determining the carboxylic acid end group concentration of the resulting PBT.

US Patent:

20180215868, Aug 2, 2018

Filed:

Aug 31, 2016

Appl. No.:

15/748198

Inventors:

- Bergen op Zoom, NL
Sasi Sethumadhavan Kannamkumarath - Evansville IN, US
Peter Anthony DiMattia - Houston TX, US

International Classification:

C08G 64/24
C08G 64/06
G01N 33/44

Abstract:

In an embodiment, an aromatic polycarbonate, having an aromatic polycarbonate backbone, can comprise: less than or equal to 5 ppm of polymeric chlorine attached to the aromatic polycarbonate backbone; less than 0.5 ppm of dichloromethane, less than 5 ppm of monohydric phenols, and less than 0.5 ppm of aromatic compounds containing no chlorine based on the total weight of the aromatic polycarbonate, wherein the aromatic compounds are compounds other than the aromatic polycarbonate.

US Patent:

20170369638, Dec 28, 2017

Filed:

Jan 29, 2016

Appl. No.:

15/542677

Inventors:

- Bergen op Zoom, NL
Prashant Kumar - Evansville IN, US
Brian Bougher - Evansville IN, US
Cornelis Adrianus Maria van Gool - Kapellen, BE
Sasi Sethumadhavan Kannamkumarath - Evansville IN, US
Bing Zhou - Evansville IN, US

International Classification:

C08G 63/183
C08G 63/78

Abstract:

Disclosed is a continuous process and device for making polybutylene terephthalate (PBT) resin, particularly high molecular weight PBT resin. Also disclosed are a device for conducting the process, and a monitoring process for determining the carboxylic acid end group concentration of the resulting PBT.