Shell Oil Comapny

Avantium International B.v.

Kathleen Suzanne Kiibler

Donald R Kelsey

James R Erickson

Robert Lawrence Blackbourn

Jeffrey G Southwick

Ben Duh

Kailash C Dangayach

Hoe H Chuah

Houston Slade Brown

Dieter Wiemer

Cecilia Zuqi Tse

Jeffrey George Southwick

Wen Tzung Tang

Hansjorg Meise

Michele Buscemi

Adriano Birosel Pangelinan

The present invention relates to a method for screening of polycondensation catalysts, wherein at least two polycondensation catalysis reactions are performed simultaneously under substantially equivalent conditions in at least two reaction cells which are present in one and the same room, using a sample comprising material to be polycondensated and a catalyst to be screened, and wherein the performances of the catalysts are analyzed. The present invention further relates to an apparatus suitable for performing the method.

Method and apparatus for screening of polycondensation catalysts

A process for the production and for the winding of one polyester yarn, preferably multi-filament yarn, which comprises at least about 85 weight %, in relation to the total weight of the polyester yarn, of polytrimethylene terephthalate (PTT) wherein said process is characterized in that filaments of said polyester yarn is heat-treated, before it is wound on a bobbin, at a temperature in the range of about 70&#xb0; C. to about 180&#xb0; C. The method of accomplishing this is by heating the godets that are used in the spinning part of the process, preferably the last pair of godets, to relax the yarns so that the yarn package will not shrink significantly during storage and/or transportation. It is thus possible to obtain at least one PTT yarn package with long-term stability during storage and which is insensitive against elevated temperatures during storage and transport.

Process for making stable polytrimethylene terephthalate packages

Process for making polytrimethylene terephthalate

The friability of crystallized PTT and solid stated PTT can be effectively reduced by lowering the temperature of the quenching water used in the pelletizing of the melt polycondensation polymer to between 32&deg; F. (0&deg; C.) and 65&deg; F. (18&deg; C.). In addition, the robustness of solid stated PTT pellets is effectively increased by using a prepolymer with a lower intrinsic viscosity (IV) or by increasing the IV of the solid stated product.

Reduction of friability of poly(trimethylene terephthalate)

The invention herein is a non-aqueous solvent free process for producing UV curable adhesive and sealant compositions comprising a tackifying resin and a monohydroxylated epoxidized polydiene polymer which is comprised of at least two polymerizable ethnically unsaturated hydrocarbon monomers wherein at least one is a diene monomer which yields unsaturation suitable for epoxidation and wherein the polymer contains from 0.1 to 7.0 milliequivalents of epoxy per gram of polymer. The process involves mixing the components with an insoluble photoinitiator under conditions of high shear and/or cavitation. The invention also relates to a film of 5 mils to one inch thick which is formed from the composition made according to the process above.

Non-aqueous solvent free process for making UV curable adhesives and

The invention herein is a solvent free process for producing UV curable adhesive and sealant compositions comprising a monool, tackifying resin, and a monohydroxylated epoxidized polydiene polymer which is comprised of at least two polymerizable ethenically unsaturated hydrocarbon monomers wherein at least one is a diene monomer which yields unsaturation suitable for epoxidation and wherein the polymer contains from 0.1 to 7.0 milliequivalents of epoxy per gram of polymer. The process involves predispersing an insoluble photoinitiator in a component of the formulation with which it is more compatible than with the tackifying resin, and then adding the tackifying resin to the predispersion.

Solvent-free process for making UV curable adhesives and sealants from

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Katy, TX, United States of America

Kathleen Suzanne Kiibler