General Electric Company

Sabic Innovative Plastics IP B.v.

Sabic Global Technolgoies B.v.

Shpp Global Technologies B.v.

Gautam Chatterjee

Veeraraghavan Srinivasan

James Alfred Day

Dibakar Dhara

Patrick Joseph McCloskey

Godavarthi S Varadarajan

Rein Mollerus Faber

Sriram Krishnamurthy

Joseph A King, Jr

Anantharaman Dhanabalan

Jan Pleun Lens

Katherine Campbell Glasgow

Hariharan Ramalingam

Bhaskar Bhairavnath Idage

Sanjay Braj Mishra

Vinod Kumar Rai

Arun Savalaram Jadhav

Siva Kumar Sreeramagiri

Robert Dirk Van De Grampel

Marc Brian Wisnudel

Swaminathan Sivaram

Kapil Chandrakant Sheth

Chinniah Thiagarajan

Adam Zerda

William David Richards

Prakash Purushottam Wadgaonkar

Gurulingamurthy M Haralur

Gaurav Mediratta

Vishvajit Chandrakant Juikar

Warren William Reilly

Yatin Tayalia

Jos Arie Van Den Bogerd

Donald George LeGrand

Sivakumar Sreeramagiri

Suresh Shanmugam

Wim Steendam

Haseena Aripuram Parakkal

Gheorghe Cojocariu

Chilukuri Ver Avadhani

Jitendra Kumar Gupta

Chandrashekhar Lingannaiah

Subash Scindia

Ravi Sriraman

Joseph Anthony King, Jr

Yashpal Bhandari

Santhosh Kumar Rajendran

Ajay Taraiya

Robert Puyenbroek

Abbas Alli G Shaikh

Muthuvijayan Jegathesan

Gary Francis Smith

Gokul Srinivasan

C Seetharaman

Christian Maria Emile Bailly

Hariharan Ramalingham

Anand Vaidyalingam

Shantaram Suryakant Morye

Antoinette Van Bennekom

Bala Ambravaneswaran

Nayaku Nivarati Chavan

Shamal Karunakaran Menon

Salim P Gopi

Ajay Kumar Taraiya

Jitendra Gupta

Shantaram Morye

Gary Smith

Abbas Alli G Shaiki

Pooja Mk

Sathappan Arumugam

Disclosed herein is a composition comprising a compatible blend of i) 60 to 85 weight percent of a linear poly(arylene sulfide), ii) 15 to 40 weight percent of a polyetherimide sulfone; and iii) 1 to 3 weight percent of a novolac resin having an average of 2 or more epoxy groups per molecule. Weight percent is based on the total weight of the composition. An article made from the composition has a tensile strength greater than or equal to 70 megaPascals (MPa), as determined by ASTM D638, an impact strength of greater than or equal to 3 kiloJoules per square meter (kJ/m), as determined by ASTM D256, and an elongation at break greater than or equal to 3 % as determined by ASTM D638. Methods of making the composition are also disclosed.

Blends of polyetherimide sulfone and poly(arylene sulfide)

Disclosed herein is a polymer blend comprising a first polycarbonate comprising a first structural unit derived from a 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine and a second structural unit derived from a dihydroxy aromatic compound, wherein the second structural unit is not identical to the first structural unit, and a second polycarbonate comprising a structural unit derived from a dihydroxy aromatic compound, wherein the polymer blend has a glass transition temperature of 155 to 200&#xb0; C.; and wherein a test auricle having a thickness of 3.2 mm and molded from the blend has a haze of less than or equal to 3.0 measured in accordance with ASTM D1003-00. A method of making the polymer blend, and articles prepared from the blend, are also disclosed.

High heat polycarbonates, methods of making, and articles formed therefrom

The present invention is directed to a blended composition comprising one or more polycarbonates wherein at least one of the polycarbonates is a polyesterpolycarbonate having at least one unit derived from a soft block ester unit, e.g., sebacic acid, and at least one unit derived from bisphenol A, and a polylactic polymer wherein the composition has an overall biocontent of at least 10% according to ASTMD6866.

Poly(aliphatic ester)-polycarbonate copolymer/polylactic acid blend

Bio-sourced polycarbonate compositions comprising, for example, a styrene-ethylene-butadiene-styrene polymer are disclosed. These polycarbonate compositions can exhibit improved ductility and/or ageing resistance compared to conventional polycarbonate compositions. Methods for the preparation of the bio-sourced polycarbonate compositions are also disclosed.

Bio-sourced transparent and ductile polycarbonate blends

Polycarbonate compositions having flame retardant properties and improved impact resistance are disclosed, together with methods for preparing the same.

Flame retardant bio-based polymer blends

Disclosed herein is a composition comprising a compatible blend of i) 24 to less than 84.5 weight percent of a linear poly(arylene sulfide), ii) 14 to 75 weight percent of a polysiloxane/polyimide block copolymer; and iii) 0.1 to less than 2.5 weight percent of a polymeric compatibilizer having 2 or more epoxy groups per molecule. Weight percent is based on the total weight of the composition. An article made from the composition has tensile elongation greater than or equal to 60% as determined by ASTM D638 and a Notched Izod impact strength greater than 50 joules per meter as determined by ASTM D256 at room temperature.

Blends of polysiloxane/polyimide block copolymer and poly(arylene sulfide)

Polymeric foams having nanocellular morphology are formed from a polymeric material having structural units derived from 2-hydrocarbyl-3,3-bis(hydroxyphenyl)phthalimidine compound. The foams include a plurality of cells having an average diameter of less than 1 micron. Processes for forming the foams include melting a polymeric material having structural units derived from 2-hydrocarbyl-3,3-bis(hydroxyphenyl)phthalimidine compounds; diffusing a blowing agent into the polymeric material to form a mixture; nucleating bubbles in the mixture is at a sufficient temperature and pressure to enable the production of cells having an average diameter of less than 1 micron; stabilizing the cells; and forming the mixture into a desired shape.

Polymeric foams with nanocellular morphology and methods for making them

Disclosed herein is a copolymer comprising isosorbide carbonate units and a polysiloxane block, wherein the copolymer comprises greater than or equal to 50 mol % isosorbide carbonate units.

Aliphatic diol-based polycarbonates, method of making, and articles formed therefrom

A method comprising treating an article with steam, wherein the article comprises a composition comprising an amount of a polysiloxane-polycarbonate copolymer effective to provide thermal and hydrolytic stability to the article for at least 15 cycles, wherein each cycle comprises 20 minutes of contact with steam at 100&#xb0; C., at atmospheric pressure. The articles are of utility in a wide variety of applications such as food service and medical applications.

Methods of sterilizing polycarbonate articles and methods of manufacture

A method for producing a transparent article comprises the steps of melt transesterifying a monomer mixture in the presence of a transesterification catalyst to produce a hydroquinone polycarbonate copolymer product comprising greater than 45 mole percent of structural units derived from the hydroquinone. The monomer mixture comprises a hydroquinone, at least one aromatic dihydroxy compound other than the hydroquinone, and a carbonic acid diester. The hydroquinone polycarbonate copolymer product is then heated to a highest processing temperature of 5&#xb0; C. to 20&#xb0; C. above a maximum melting melt temperature for the hydroquinone copolymer product for a sufficient period of time to render the hydroquinone polycarbonate copolymer product transparent upon cooling to ambient temperature; and cooling the hydroquinone polycarbonate copolymer product to produce the transparent article. The method can also be used for producing transparent hydroquinone polycarbonate copolymers, which can be used for producing the transparent articles.

Methods for preparing transparent articles from hydroquinone polycarbonate copolymers

A composition comprising a polycarbonate, wherein the polycarbonate has a weight average molecular weight of greater than 15,000, comprises more than 15 mole percent structural units derived from a 2-aryl-3,3-bis(4-hydroxyaryl)phthalimide: 

Methods for producing and purifying 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine monomers and polycarbonates derived therefrom

Disclosed herein is a method for producing a 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine. The method comprises forming a reaction mixture comprising at least one substituted or unsubstituted phenolphthalein, at least one substituted or unsubstituted primary hydrocarbyl amine, and an acid catalyst; and heating the reaction mixture to a temperature of less than 180&#xb0; C. to remove a distillate comprising water and form a crude 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine product; where the 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine has a formula: where Ris selected from the group consisting of a hydrogen and a hydrocarbyl group, and Ris selected from the group consisting of a hydrogen, a hydrocarbyl group, and a halogen.

The disclosure provides high quality, low yellowness index copolycarbonates comprising structural units derived from at least one aliphatic diol, at least an aromatic dihydroxy compound and a diaryl carbonate. Also disclosed herein is a method of making such copolycarbonates in presence of one or more catalysts.

Aliphatic diol polycarbonates and their preparation

A thermoplastic polymer molding composition useful for producing an article, where the molding composition comprises a polyorganosiloxane-polycarbonate block copolymer and a flow modifier; wherein the flow modifier is at least one selected from the group consisting of a polyalkylene glycol, a low weight average molecular weight polycarbonate polymer, or mixtures thereof; and further wherein the flow modifier reduces surface imperfections when molded into the article.

Polycarbonate molding compositions and articles with improved surface aesthetics

Polycarbonate copolymers and methods for producing the polycarbonate copolymers

Growing community of inventors

Bengaluru, India

Gautam Chatterjee