Sabic Innovative Plastics IP B.v.

General Electric Company

Sabic Global Technologies B.v.

Saudi Basic Industries Corporation

Saudi Basic Indsutries Corporation

Pradeep Jeevaji Nadkarni

Balakrishnan Ganesan

Nedumbamana Sankaran

Daniel Joseph Brunelle

Gary Charles Davis

Gurram Kishan

Venkata Rama Narayanan Ganapathy Bhotla

Thomas Link Guggenheim

Ganesh Kailasam

David Winfield Woodruff

David Bruce Hall

Norman Enoch Johnson

Edward Joseph Nesakumar

Abdulaziz Hamad Al-Humydi

Girish Mariswamy Chandra

Vinodkumar Vasudevan

Arun Kumar

James Manio Silva

Farid Fouad Khouri

Peter David Phelps

Arunkumar Natarajan

Robert Edgar Colborn

Dan Hancu

Jan Henk Kamps

Mark Allen Cheverton

Thomas Joseph Fyvie

Jan Pleun Lens

Elliott West Shanklin

Paul Edward Howson

Raul Eduardo Ayala

Andrew A Burns

Shantaram Narayan Naik

Amy Rene Freshour

Gaurav Mediratta

Michael Teruki Takemori

Sumeet Jain

Matthew Hal Littlejohn

Hugo Gerard Eduard Ingelbrecht

Kiran Arunkumar Puthamane

Jeremy David Hurst

Suresh Velate

Kankan Bhaumik

Ravindra Vikram Singh

Sharankumar G Shetty

Haif Al-Shammari

Rupesh Bhikaji Pawar

Prashant Shinge

Meghna Markanday

Gert-Jan Schoenmakers

Jegadeesh Thampi

Suresh Shanmugam

Kumar Arun Satyanarayana

Lioba Maria Kloppenburg

Meerakani Mohamed Ali Sait

Sunil Ashtekar

Salkod Parameshwar Mallika

Vinod Kumar Rai

Girish Koripelly

Ashok Shyadligeri

Mohamed Ashraf Moideen

Ashok Menon

Shivakumar Konda

Mahesh Malusare

Pushpa Narayanan

Arun Dixit

C Seetharaman

Sabyasachi Mandal

Jan Plen Lens

Kiran ArunKumar Puthamane

Sankaran B Nedumbamana

Rajshekhar Basale

Ramanarayanan Gv

Venkata Rama Narayanan Ganapathy Bholta

Surendra Kulkarni

Hugo Ingelbrecht

Ashok Ramakrishnan Menon

M Meerakani Sait

Kuppuswamy Raghunathan

Vinod Kumar Vasudevan

Sahida Sharma

Anup Krishnnan Appukuttan Pillai

George Kuriakose

Suresh Shanumgam

Sankaran Nedumbamana

Vinod Vasudevan

Michael T Takemori

Gv Ramanarayanan

S Arun Kumar

The invention relates to a metallocene complex according to formula (1) wherein M is a metal selected from lanthanides or transition metals from group 3, 4, 5 or 6 of the Periodic System of the Elements, Q is an anionic ligand to M, k is the number of Q groups and equals the valence of M minus 2, Z, Z, Zand Zare identical or different and can be chosen from the group consisting of hydrogen and a hydrocarbon radical with 1-20 carbon atoms, and adjacent substituents Z can form a ring system together with the carbon atoms of the Cp ring to which they are bound. 

Bridged metallocene complex for olefin polymerization

Methods for synthesizing and purifying 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine compounds are provided. The method includes heating a reaction mixture including a phenolphthalein, a primary aryl amine, and an acid catalyst to form a phthalimidine; precipitating the phthalimidine from the reaction mixture to provide a crude phthalimidine; providing a solution including the crude phthalimidine, an additive, and at least one solvent; contacting the solution with one or more purification agents to provide a treated solution; precipitating and recovering a phthalimidine adduct from the treated solution; and recovering a purified phthalimidine compound from the adduct.

Methods for purifying 2-aryl-3,3-bis(hydroxyaryl)phthalimidines

A photochromic dye comprising at least one compound characterized by Formula I: 

Photochromic spirooxazine compounds

Disclosed is a wavelength-conversion material, and methods for its use, that includes an organic fluorescent dye and a polymeric matrix, wherein the organic fluorescent dye is solubilized in the polymeric matrix, and wherein the polymeric matrix is capable of absorbing light comprising a wavelength of 500 to 700 nm and emitting the absorbed light at a wavelength of greater than 550 to 800 nm.

Solar energy funneling using thermoplastics for agricultural applications

Articles for recording a holographic image are described. The articles include a holographic recording medium having a plurality of surfaces, having a transparent polymeric binder and a photochemically active dye, the holographic recording medium having a holographic image recorded therein formed by exposed areas of the photochemically active dye and unexposed areas of the photochemically active dye; and a first light-blocking layer or material over a first surface of the holographic recording medium from which surface the holographic image is viewed, the light blocking layer or material absorbing light in the wavelength range to which the photochemically active dye is sensitive and allowing transmission of light in a different wavelength range for viewing the holographic image.

Method of making holographic storage medium

A luminescent solar collector comprises a sheet and a light energy converter operatively connected to the sheet, the sheet comprising a thermoplastic polymer and dispersed therein at least two dyes A and B; wherein dye A is a fluorescent dye of Formula (I) and dye B is either a perylene dye of Formula (II) or a diketopyrrolopyrrole dye of Formula (III): wherein R, m, R, R, R, R, and k are as described herein. The luminescent solar collector has improved output.

Luminescent solar collector

A luminescent solar collector contains a first fluorescent dye and a dye compound of Formula (I) or (II): where R, R', m, and k are as described herein. The luminescent solar collector has improved output.

Disclosed are fluorescent dye compounds of Formula (I): wherein R, R, and G are as described herein. The fluorescent dyes are suitable for use in luminescent solar collectors or as a colorant. Methods of making the fluorescent dyes and luminescent solar collectors comprising them are also described.

Disclosed are fluorescent dye compounds of Formula (I) or (II): where R, R', m and k are as described herein. The dye compounds are suitable for use in luminescent solar collectors. Methods of making the dye compounds and luminescent solar collectors comprising them are also described.

A method for recovering and reusing a ring-halogenation catalyst comprises: (A) contacting an aromatic compound with chlorine or bromine in the presence of a catalyst composition, where the catalyst composition comprises at least one salt comprising a Group 4-13 metal, a lanthanide metal, or an actinide metal; and at least one organic counterion derived from an organic acid having a pKa relative to water of 0 or greater; and at least one organic sulfur compound; to form a first product mixture comprising a monochloro or a monobromo aromatic compound and a Group 4-13 metal halide, a lanthanide metal halide or an actinide metal halide; (B) separating the metal halide from the first product mixture; and (C) contacting at least a portion of the metal halide and an aromatic compound with chlorine or bromine, and at least one organic sulfur compound; to form a second product mixture comprising a monochloro or a monobromo aromatic compound and a Group 4-13 metal halide, a lanthanide metal halide or an actinide metal halide.ving a pKa relative to water of 0 or greater; and at least one organic sulfur compound.

Methods for recycling catalyst compositions for aromatic ring halogenation

Disclosed is a method for removing a neutral or an ionic guanidine compound from aqueous media optionally comprising an alkali metal halide, wherein the method is selected from the group consisting of (a) adsorption onto a carbonaceous adsorbent, (b) adsorption onto a clay adsorbent, (c) filtration through a nanofiltration membrane, and (d) removal of water and calcination.

Method for removal of guanidine compound from aqueous media

A method for purifying a 2-aryl-3,3-bis(hydroxyaryl)phthalimidine comprises contacting a crude 2-aryl-3,3-bis(hydroxyaryl)phthalimidine with a purification agent, removing a 2-aryl-3-(aminoaryl)-3-(hydroxyaryl)phthalimidine compound from the crude 2-aryl-3,3-bis(hydroxyaryl)phthalimidine, and producing a purified 2-aryl-3,3-bis(hydroxyaryl)phthalimidine product comprising less than 200 parts per million of the 2-aryl-3-(aminoaryl)-3-(hydroxyaryl)phthalimidine compound. The purification agent is selected from the group consisting of an acidic material, an organic acid chloride, an organic anhydride, or a combination thereof. The 2-aryl-3-(aminoaryl)-3-(hydroxyaryl)phthalimidine compound has a formula: wherein each Ris independently selected from a group consisting of a hydrocarbyl radical, a nitro radical, and a halogen atom; 'a' is an integer from 0 to 4; and Arand Arare independently at each occurrence an aromatic radical. The purified 2-aryl-3,3-bis(hydroxyaryl)phthalimidines have low color, and are useful for preparing polymers, such as polycarbonates having a low color. The polycarbonates are useful for producing articles.

A method for ring-halogenating an aromatic compound comprises contacting with chlorine or bromine, a mixture comprising the aromatic compound and a mixed copper salt of formula Cu(Y)X, where Y comprises a counterion derived from an organic acid, where the organic acid has a pKa relative to water of 0 or greater; and X comprises Cl, Br, I, or (SO); to produce a reaction mixture comprising a haloaromatic compound and a copper(II) halide residue.

Catalyst composition and method for halogenating aromatic compounds

Purified 2-aryl-3,3-bis(hydroxyaryl)phthalimidines

Growing community of inventors

Bengaluru, India

Pradeep Jeevaji Nadkarni