Dow Global Technolgoies LLC

Rohm and Haas Company

Sabic Global Technologies B.v.

Other

Jorge Jimenez

John N Argyropoulos

Debkumar Bhattacharjee

William Hoy Heath

Harpreet Singh

Qiuyun Xu

Amarnath Singh

Joseph James Zupancic

David Elmer Vietti

William Aaron Koonce

Rory Dennis Daussin

Pavel Shutov

Joerg-Peter Gehrke

Paula A Cameron

Lao-Jer Chen

James Alan Mahood

James Franklin Hoover

Francois M Casati

Pankaj Singh Gautam

Norman Enoch Johnson

Dwight D Latham

Xiankuan Zhang

Hector Antonio Perez

Bindu Krishnan

Amira A Marine

Hanno R Van Der Wal

Woo-Sung Bae

Bedri Erdem

Laura A Grier

Paulette N Hazin

Kevin K Miyake

Mikhail Y Gelfer

Vanni Parenti

Rahul Patil

Aaron Royer

Davide Micheletti

Hans Kramer

Guiseppe Lista

Bindushree Radhakrishnan

Xin Li

Rory D Daussin

Melissa M Rose

Philippe Poncet

Viviano Bertolone

Orazio Rubulotta

Pavel L Shutov

Joshua D Taylor

Reggie Tennyson

Robert J Werling

William N Ii Felsted

Hanno Van Der Wal

Hector Perez

Giuseppe Y Lista

A method of preparing a poly(ester-carbonate) includes contacting an aqueous solution including a dicarboxylic acid with a first solution including phosgene and a first organic solvent in a tubular reactor to provide a first reaction mixture. A dihydroxy aromatic compound, the corresponding dialkali metal salt of the dihydroxy aromatic compound, or a combination comprising at least one of the foregoing, water, and a second organic solvent are combined to provide a second reaction mixture. The method further includes introducing the first reaction mixture, the second reaction mixture, and a second solution comprising phosgene to a tank reactor, wherein the tank reactor has a first pH of 7 to 10. The pH is optionally raised to 9 to 11 to provide a third reaction mixture including the poly(ester-carbonate). Poly(ester-carbonate)s prepared according to the method described herein are also disclosed.

Process for preparing poly(ester-carbonate)s and poly(ester-carbonate)s prepared thereby

Methods for producing butadiene by the oxidative dehydrogenation of butene are provided. Methods for producing butadiene from a feed stream including oxygen and butene in a molar ratio of oxygen to butene (O/CH) from about 0.9 to about 1.5 can include introducing the feed stream to a catalyst in the presence of steam. The molar ratio of steam to butene (HO/CH) can be from about 10 to about 20. Methods can further include reacting the butene to generate a product stream therefrom comprising butadiene and water. Methods can further include separating water from the product stream to generate a butadiene stream including greater than about 85 wt-% butadiene.

Methods for the oxidative dehydrogenation of butene to produce butadiene

The instant invention provides a curable formulation suitable for laminating adhesive applications, and laminating adhesives made therefrom.

Laminating adhesive&#x2014;polyester-polycarbonate-polyol systems

A method for producing an aromatic dianhydride includes reacting an aromatic diimide with a substituted or unsubstituted phthalic anhydride in an aqueous medium in the presence of an amine exchange catalyst to provide an aqueous reaction mixture including an N-substituted phthalimide, an aromatic tetraacid salt, and at least one of an aromatic triacid salt and an aromatic imide diacid salt. The method further includes removing the phthalimide from the aqueous reaction mixture by extracting the aqueous reaction mixture with an organic solvent for a first time period, at a first extraction temperature and subsequent to the first time period, extracting the aqueous reaction mixture with an organic solvent for a second time period, at a second extraction temperature. The aromatic tetraacid salt is converted to the corresponding aromatic dianhydride. Aromatic dianhydrides prepared according to the method are also described.

Method for isolation of a dianhydride and dianhydrides prepared by the method

A polyester polyol comprising at least one esterified unit of formula (I) wherein L is a difunctional aliphatic group having from two to six carbon atoms and R is a C-Calkyl group.

Aminosilane adhesion promoter for urethane system

A polyester polyol is formed in a polycondensation reaction between an aromatic dicarboxylic acid, a polyol, and an epoxy compound having a straight chain alkyl or alkenyl group having at least six carbon atoms. The polyester polyol exhibits excellent compatibility with hydrocarbon blowing agents. As such, it is a useful component in rigid polyurethane foam formulations that are contain hydrocarbon blowing agents.

Polyester polyol and polyol blends and rigid polyurethane foam manufacturing

Embodiments of the invention provide for polyurethane-based sealants. The sealants include a reaction product of a reaction system which includes at least one isocyanate, and at least one polyester polyol. The polyester polyol includes a reaction product of a polyester reaction mixture which includes one or more hydrophobic monomers, one or more organic diacids or methyl esters thereof, and one or more diols.

Polyurethane based insulated glass sealant

A polyurethane adhesive having a low gross heat of combustion is used to assemble insulation panels such as mineral wool insulation panels. The polyurethane adhesive contains a polyisocyanate side and a polyol side. The polyol side includes a certain polyether ether polyol and an aromatic polyester diol. The mixture of these polyols provides excellent adhesion together with suitably low viscosities, even at high filler levels, and a cured adhesive that has a low gross heat of combustion.

Polyurethane adhesive having low gross heat of combustion and insulation panels assembled with such adhesives

A two-component curable adhesive or sealant composition is provided. The first component may comprise a mixture of at least one polyol selected from the group comprising a polyester polyol, a polyester-polycarbonate copolymer polyol, and combinations thereof, a resin, and optionally a solvent. The second component may comprise a prepolymer obtained by reacting a polyester-polycarbonate copolymer polyol which is the reaction product of a polyester polyol which is the reaction product of one or more organic acids, and one or more glycols having a functionality of two or more and one or more polycarbonate polyols, at least one organic polyisocyanate component, and at least one chain extending agent and optionally a solvent. Alternatively, the first component may comprise a polyester-polycarbonate copolymer polyol, a resin, and optionally a solvent. The second component may comprise a polyisocyanate curative and optionally a solvent. The cured adhesive exhibits improved hydrolytic properties while maintaining excellent processability and adhesive properties.

Ester carbonate polyols for hydrolytically stable adhesives

Polyester-co-carbonate polyols and methods for producing the same are provided. The method comprises reacting one or more alcohols having an OH functionality of two or more with one or more organic diacids to form a reaction mixture, adding a first amount of dialkyl carbonate to the reaction mixture to remove water remaining from the reaction mixture by azeotropic drying, adding a transesterification catalyst to the dialkyl carbonate containing reaction mixture and adding a second amount of dialkyl carbonate to the catalyst containing reaction mixture.

Single-pot process for the production of polyester-co-carbonate polyols

Embodiments of the invention provide for methods of producing a polycarbonate polyol. The method includes charging a vessel with butanediol, charging the vessel with a polymerization catalyst, and adding to the vessel dimethyl carbonate at a rate of at least 2.0 g of DMC per minute per kg of BDO to produce polycarbonate polyol at a polycarbonate polyol yield of at least 80% of a theoretical yield.

Yield optimization of polycarbonate polyols

The present invention is an aliphatic or cycloaliphatic isocyanate obtained form a process comprising the steps of reacting an aliphatic or cycloaliphatic primary amine, with phosgene in the presence of an inert solvent, wherein the initial reaction temperature is between 100 and 130&#xb0; C. and the temperature is subsequently ramped to 150 to 180&#xb0; C. during the course of the reaction, the solvent to amine weight ratio is 95:5 to 80:20, the total reaction pressure is maintained between 50 and 350 psig and the amine is rapidly dispersed in the phosgene through injection in a region of high efficiency mixing.

Process for the production of aliphatic isocyanates

A process for preparing a hybrid polyester-polyether polyol comprises contacting a carboxyl group-containing component and an epoxide, optionally in the presence of one or more of a double metal cyanide catalyst, a superacid catalyst, a metal salt of a superacid catalyst and/or a tertiary amine catalyst, under conditions such that a hybrid polyester-polyether polyol is formed. The hybrid polyester-polyether polyol offers the advantages of both ester and ether functionalities when used in a polyurethane formulation, thus enhancing physical properties. The process results in products having narrow polydispersity, a low acid number and unsaturation, and reduced byproduct formation, particularly when the double metal cyanide catalyst is employed.

Hybrid polyester-polyether polyols

The present invention is a process for aliphatic or cycloaliphatic isocyanate. The process comprises reacting an aliphatic or cycloaliphatic primary amine, with phosgene in the presence of an inert solvent wherein the initial reaction temperature is between 100 and 130&#xb0; C. and the temperature is subsequently ramped to 150 to 180&#xb0; C. during the course of the reaction, the solvent to amine weight ratio is 95:5 to 80:20, the total reaction pressure is maintained between 50 and 350 psig and the amine is rapidly dispersed in the phosgene through injection in a region of high efficiency mixing.

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Lake Jackson, TX, United States of America

Jorge Jimenez