General Electric Company

Sabic Innovative Plastics IP B.v.

Nbcuniversal Media, LLC

Bharat Singh

John William Fulmer

Pramod Shankar Kumbhar

Prashant Anil Tatake

Jegadeesh Thampi

Rupesh Bhikaji Pawar

Radislav Alexandrovich Potyrailo

Kenneth Brakeley Welles

Arun Kumar

Philippe Schottland

Marc Brian Wisnudel

Eugene George Olczak

Pingfan Peter Wu

Vandita Pai-Paranjape

David Gilles Gascoyne

Adil Minoo Dhalla

William David Smith, Ii

Yogendrasinh Bharatsinh Chauhan

Sriramakrishna Maruvada

Terry Michael Topka

Umesh Krishna Hasyagar

Ashok Menon

Sabyasachi Mandal

Marakani Venkata Ramani

Pramod Kumbhar

A system for altering a functionality of an optical article from a pre-activated state to an activated state, comprising an optical article comprising an optical data layer for storing data, an external radiation source for generating an external stimulus adapted to interact with the optical article, such interaction causing a change in optical accessibility of optically stored data, a directing material, wherein said directing material is for directing the external stimulus to selective portions of the optical article, thereby altering the functionality of the optical article from a pre-activated state to an activated state; a convertible element capable of responding to the external stimulus to irreversibly alter the optical article from the pre-activated state of functionality to the activated state of functionality, wherein said convertible element comprises a color-shift dye, a magnetic material, a thermo-chromic material, a magneto-optical material, a light scattering material, a phase-change material, dye aggregates, or combinations thereof.

Optical article having anti-theft feature and a system and method for inhibiting theft of same

Use of a specific combination of catalysts for the first and second steps of the process for the conversion of CHP to BPA provides high yields of BPA and low impurity yields, without a requirement for the intermediate purification steps. In the first step, CHP is cleaved in the presence of an acid treated clay such as acid treated Montmorillonite clay to produce phenol and acetone. In the second step, the phenol and acetone produced is reacted, preferably without intermediate purification, in the presence of a cation exchange resin catalyst that includes a cation exchange resin and a mercaptan or mercaptoalkanoic acid promoter to produce BPA.

Integrated process for the production of bisphenol A from cumene hydroperoxide

Use of a specific combination of catalysts for the first and second steps of the process for the conversion of CHP to BPA provides high yields of BPA and low impurity yields, without a requirement for the intermediate purification steps. In the first step, CHP is cleaved in the presence of a sulfated metal oxide catalyst such as sulfated Zirconia to produce phenol and acetone. In the second step, the phenol and acetone produced is reacted, preferably without intermediate purification, in the presence of a cation exchange resin catalyst that includes a cation exchange resin and a mercaptan or mercaptoalkanoic acid promoter to produce BPA.

A process for producing a phenol product generally comprises a first step comprising reacting in a first reactor a feed stream comprising cumene hydroperoxide and water with an acid catalyst to produce an effluent comprising the phenol product, acetone, and at least 1% by weight residual cumene hydroperoxide, and a second step comprising passing the effluent into a second reactor and decomposing the residual cumene hydroperoxide, wherein during said process the ratio of phenol to acetone is maintained at a molar ratio of greater than 1:1, and wherein the water in each of the first and second steps is present in an amount more than 0 and less than or equal to 5 weight percent based on the total weight of the feed stream or effluent, and wherein the process is continuous.

Process for producing phenol

A system for purifying a cumene hydroperoxide cleavage product mixture comprises a cumene hydroperoxide cleavage product mixture feed containing impurities in fluid communication with an aqueous alkaline solution feed; the cumene hydroperoxide cleavage product mixture and aqueous alkaline solution feeds are in fluid communication with a neutralization drum having an aqueous salt phase outlet; an aqueous salt phase feed containing impurities in fluid communication with a heat treatment vessel having a heat-treated aqueous salt phase outlet; and a heat-treated aqueous salt phase feed containing water-soluble derivatives of the impurities in fluid communication with the cumene hydroperoxide cleavage product mixture prior to the neutralization drum.

System and method for purifying cumene hydroperoxide cleavage products

A process for converting carbonyl-type impurities contained in a phenolic solvent to high-boiling derivatives is provided by contacting the phenolic solvent with a hydrotalcite-type material (HTM). The phenol can be separated from the high-boiling derivatives using conventional separation techniques, such as distillation, so the invention also provides a process for separating carbonyl-type impurities, such as hydroxyacetone (HA), from a phenolic solvent. The process can be applied in the conventional industrial process for converting cumene to phenol to remove carbonyl-type impurities from the phenol product. A process and a facility for producing purified phenol by converting cumene to phenol are provided. In the conversion of cumene to phenol, the phenol often contains carbonyl-type impurities. The phenol and carbonyl-type impurities are reacted in the presence of an HTM to produce phenol and high-boiling derivatives. The phenol may be further purified using conventional separation techniques, such as distillation, to remove the high-boiling derivatives.

Production and purification of phenol: hydroxyacetone removal by hydrotalcite

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Bengaluru, India

Bharat Singh