Cyclics Corporation

Polymics, Ltd.

Momentive Performance Materials Gmbh

General Electric Company

Ht Materials Corporation

Wang, Yi-feng

Hay, Allan S.

Patel, Bhavin N.

Li, Kun

Hsu, Tim

Yi-Feng Wang

Peter David Phelps

Allan S Hay

Tim Hsu

Tohru Takekoshi

Kenrick M Lewis

Anubhav Saxena

Steven J Winckler

Timothy A Thompson

Kendall L Guyer

Donald G Le Grand

Dieter Wrobel

Steven R Bahr

Senthilkumar Umapathy

Xigao Jian

Bhavin Patel

Paul Willey

Dustin Veazey

Uwe Irmer

Sunita S Baghel

Sentihilkumar Umapathy

Kun Li

Bhavin N Patel

Kenrick Martin Lewis

Kendall Louis Guyer

Melt stable polyaryletherketoneketone are prepared from a reactive, lower molecular weight polyaryletherketoneketone having an ultraviolet absorbance at 455 nm of at least 0.185 when measured in 0.1% solution in dichloroacetic acid.

Reactive processing of polyaryletherketones

Compositions and methods for a melt processable semicrystalline poly(aryl ether ketone) incorporating phthalazinone and 4,4'-biphenol as comonomer units are described herein. The polymers are resistant to and insoluble in common organic solvents and liquids as well as in aggressive organic solvents such as chloroform and chlorinated liquids. The polymers are melt processable via techniques such as extrusion, injection molding, and compression molding. The semicrystalline poly(aryl ether ketone) containing phthalazinone comonomer units have properties which make them suitable for manufacturing high temperature resistant molded systems and other articles.

High temperature melt processable semi-crystalline poly(aryl ether ketone) containing a (4-hydroxyphenyl)phthalazin-1(2h)-one comonomer unit

High temperature melt processable semi-crystalline poly (aryl ether ketone) containing a (4-hydroxyphenyl) phthalazin-1 (2H)-one comonomer unit

There is provided new mono-(meth)acrylate functionalized hydrophilic silicone monomers containing a polyether with branched linking group, useful in making water absorbing silicone-hydrogel films for contact lens applications. This invention also provides homo-polymers and copolymers made from the mono-(meth)acrylate functionalized hydrophilic silicone monomers described herein. Also provided is a process for producing the monomers and polymers described herein and contact lenses produced from the same.

Hydrophilic silicone monomers, process for their preparation and thin films containing the same

The present invention provides high temperature compositions comprising blends of a first polymer, poly(aryl ether ketone phthalazinone)s, and a second polymer, selected from poly(aryl ether ketone)s, poly(aryl ketone)s, poly(ether ether ketone)s, poly(ether ketone ketone)s, or polybenzimidazoles, thermoplastic polyimides, polyetherimides, poly(aryl ether sulfone)s, poly(phenylene sulfide)s, and mixtures thereof. The compositions have improved high temperature characteristics, e.g., improved high temperature load capability and improved high temperature melt processibility.

High temperature polymer blends of poly(aryl ether ketone phthalazinone)

The present invention relates to a process for the manufacturing of continuously shaped cured silicone articles, particularly extrusions articles and the use of silicone compositions containing a photoactivatable metal catalyst in said process, wherein the curing is initiated by visible or UV-light.

Process for the continuous manufacturing of shaped articles and use of silicone rubber compositions in that process

There is provided a mono-(meth)acrylate functionalized hydrophilic silicone monomers containing a polyether with branched linking group, useful in making water absorbing silicone-hydrogel films for contact lens applications. This invention also provides homo-polymers and copolymers made from the mono-(meth)acrylate functionalized hydrophilic silicone monomers described herein. Also provided is a process for producing the monomers and polymers described herein and contact lenses produced from the same.

A poly(phthalazinone sulfone) composition for molded articles having such characteristics as high temperature resistance, good electrical properties, good chemical and solvent resistance and toughness consists essentially of a polymer of formula (I):Cp-ZA-Z&#x2003;&#x2003;(I)wherein Z is a bisphenyl sulfone moiety of formula: (II): A is a phthalazinone moiety of formula (III): Cp is A, as defined above, or a biphenol moiety of formula (IV): x is an integer of at least 1;y is an integer of at least 1; and x+y=n, where n is an integer such that the polymer has a weight average molecular weight of about 20,000 to about 170,000, the composition comprising less than 5%, by weight, of low molecular weight oligomers; and having a glass transition temperature (Tg) from 225 to 305&#xb0; C.

High temperature poly(aryl ether)s containing a phthalazinone moiety

Organo-titanate catalysts are prepared that are useful to catalyze depolymerization of a polyester to produce macrocyclic oligoesters substantially free from macrocyclic co-oligoesters.

Organo-titanate catalysts for preparing pure macrocyclic oligoesters

The invention provides methods and formulations involving the use of promoters that accelerate the polymerization of macrocyclic polyester oligomers (MPOs). For example, in certain embodiments, the invention provides blends of macrocyclic polyester oligomer (MPO), catalyst, and promoter that are substantially stable at ambient temperature for a period of time. The blend material may be stored without premature polymerization of MPO or deactivation of catalyst. The invention also provides processes employing one-part, ready-to-polymerize blends that contain MPO, catalyst, and promoter, as well as processes in which the catalyst and promoter are used in separate streams and are contacted when it is desired to accelerate polymerization of MPO. Methods of the invention offer advantages in the manufacture of thermoplastic parts and composites, due at least in part to the unique properties of MPO.

Methods for polymerizing macrocyclic polyester oligomers using catalyst promoters

This invention relates to single-component and multi-component catalytic systems using aryl titanates. Aryl titanate compounds are useful as catalysts and co-catalysts in single-component and multi-component catalytic systems (e.g., for the polymerization of macrocyclic oligoesters and the depolymerization of polyesters). Multi-component catalytic systems using aryl titanates allow increased versatility in applications such as liquid molding.

Catalytic systems

The invention provides blends of macrocyclic polyester oligomer (MPO) with high-molecular-weight polymer and polymerization catalyst as friable, one-component, ready-to-polymerize materials with long shelf life. The invention also provides methods for preparation and use of the blend materials. The blends are used, for example, in the production of thermoplastics via low-pressure processes, such as rotational molding and powder coating, without modification of existing equipment. The blends are particularly useful where it is desired to exploit the ability to polymerize and crystallize MPO isothermally, but where the melt viscosity of unfilled MPO is too low for use in existing equipment.

Blends containing macrocyclic polyester oligomer and high molecular weight polymer

The invention relates to polymer-containing catalysts (e.g., polymer-containing organo-metal catalysts) that may be useful in various applications (e.g., polymerization of macrocyclic oligoesters). Advantages of these catalysts include the improved ability to prepare, store, and handle the catalyst in open air; higher molar volume and molecular weight; and the ability to produce a blend of reactants and a catalyst (e.g., a macrocyclic oligoester and a polymerization catalyst) for subsequent one-step reaction (e.g., polymerization of macrocyclic oligoesters).

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Clifton Park, NY, United States of America

Yi-Feng Wang