Sabic Global Technologies B.v.

Derek Lake

Paul Dean Sybert

James Franklin Hoover

Jean-Francois Morizur

Yusuf Sulub

Zhensheng Ding

Christopher Luke Hein

Jon Michael Malinoski

Daniel Francis Lowery

Peter Hendrikus Theodorus Vollenberg

Zhensbeng Ding

The present invention is to provide processes, apparatuses, and systems for monitoring and/or controlling caustic concentrations in caustic scrubbers. In various aspects, the processes, apparatuses, and systems comprise a real-time online method for measuring the concentration of caustic in process scrubbers wherein a probe is coupled to a spectrometer; collecting absorption data with wavelength range from about 1000 to about 2000 nm. In a further aspect, this technique tracks the use and recharge of caustic in process scrubbers.

Real-time online determination of caustic in process scrubbers using near infrared spectroscopy and chemometrics

A plastic article is described having a thickness of 0.5 mm to 5 mm, comprising a polycarbonate thermoplastic composition including polycarbonates containing phthalimidine carbonate units, said composition providing a heat deflection temperature of at least 145&#xb0; C., a light transmittance of at least 85%, and CIE 1976 L*, a*, b* values of L* greater than 92, a* between &#x2212;1.5 and 1.5, and b* between &#x2212;2.0 and 3.0, when tested in the form of a 3.2 mm thick test sample molded at 580&#xb0; F. (304&#xb0; C.) with a 1.7 minute residence time, using CIE illuminant C and 2 degree observer.

Transparent plastic article

Disclosed herein are compositions including a cross-linked polycarbonate. The cross-linked polycarbonate may be derived from a polycarbonate having about 0.5 mol % to about 5 mol % endcap groups derived from a monohydroxybenzophenone. A plaque including the composition can achieve a UL94 5VA rating. Also disclosed herein are articles including the compositions, methods of using the compositions, and processes for preparing the compositions.

Cross-linked polycarbonate resin with improved chemical and flame resistance

Different interfacial processes for producing photoactive additives are disclosed. Generally, the photoactive additives are cross-linkable polycarbonate resins formed from a dihydroxybenzophenone, a first linker moiety, a diol chain extender, and an end-capping agent. The resulting additives can be crosslinked with other polymers upon exposure to UV radiation.

Interfacial processes for preparing photoactive additives

Disclosed herein are processes, apparatuses, and systems for monitoring and/or controlling caustic concentrations in caustic scrubbers. In various aspects, the processes, apparatuses, and systems comprise a real-time online method for measuring the concentration of caustic in process scrubbers wherein a probe is coupled to a spectrometer; collecting absorption data with wavelength range from about 1000 to about 2000 nm. In a further aspect, this technique tracks the use and recharge of caustic in process scrubbers. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Different interfacial processes for producing photoactive additives are disclosed. Generally, the photoactive additives are formed from a photoactive moiety, a first linker moiety, and a diol chain extender. The resulting additives can be crosslinked with other polymers upon exposure to UV radiation.

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Evansville, IN, United States of America

Derek Lake