Bayer Aktiengesellschaft

Bayer Materialscience Ag

Other

Bayer Corporation

Bayer Antwerpen N.v.

Covestro Deutschland Ag

H.c. Starck Gmbh

Bayeraktiengesellschaft

Bayer Intellectual Property Gmbh

Heraeus Precious Metals Gmbh & Co. Kg

Alexander Karbach

Rolf Wehrmann

Alexander Meyer

Stephan Kirchmeyer

Raymond Audenaert

Wolfgang Ebert

Friedrich Jonas

Helmut-Werner Heuer

Ralf Dujardin

Andreas Elschner

Joachim Simon

Bavo A Muys

Aaron D Meltzer

Christian Lindner

Rolf Dhein

Hanns P Muller

Friedrich-Karl Bruder

Heinz Pudleiner

Klaus Horn

Knud Reuter

Helmut Ritter

Hanns-Peter Muller

Wilfried Haese

Klaus Meyer

Thomas König

Etienne A Van Thillo

Leo Morbitzer

Ulrich Liesenfelder

Rafael Oser

Josef Buekers

Detlev Joachimi

Thomas Elsner

Joachim Franke

Christian Weber

Michael Erkelenz

Reiner Rudolf

Geza Avar

Noelle Wrubbel

Georg Heger

Bert Ruytinx

Franky Bruynseels

Karl-Heinz Dorner

Etienne Van Thillo

Detley Joachimi

Peter Tappe

Matthias Voetz

Erwin Piejko

Rainer Mellis

Delef Michalski-Vollmer

Burkhard Reitze

Thomas Winzen

Andreas Pogoda

Gabriele Kretschmar

Detlef Michalski-Vollmer

Bernhard Nietzwetzki

The present invention relates to polysiloxane-polycarbonate block cocondensates derived from a continuous melt transesterification process comprising polysiloxane blocks of the formula (1) and polycarbonate blocks having recurring units of the formula (2) having improved rheological properties and good mechanical properties as well as to mouldings and extrudates made from these polysiloxane-polycarbonate block cocondensates and wherein the polysiloxane-polycarbonate block cocondensate has a siloxane domain distribution (diameter of siloxane domains) from 200 nm to 1 &#x3bc;m measured by atomic force microscopy and light microscopy which is in the range of 0.01%-2.5%, based on the total number of siloxane domains.

Polysiloxane-polycarbonate block cocondensates with improved rheological properties

The present invention relates to copolycarbonates having improved surface hardness, processes for the preparation thereof and the use thereof for the production of blends, shaped articles and extrudates.

Copolycarbonates having improved surface hardness

Linear polycarbonate resin virtually free of surface defects that impair the suitability of the resin for demanding optical application is disclosed. Also disclosed is a process for the manufacture of the resin. The surface defects included in the resin are in the form of transparent fluorescing particles, the particle count of which portion that are 15 and 250 &#x3bc;m in size, is up to 1.8 counts/g, said count being determined by exciting the residue remaining after filtering a solution of said polycarbonate in methylene chloride through a Teflon filter of 5 &#x3bc;m pore size at a wavelength of 400-440 nm, 25&#xd7; overall magnification and illumination time of 40 millisec. The polycarbonate is suitable for making films of improved optical properties.

Polycarbonate for making extruded films that are virtually free of surface defects

A process for treating the working surfaces of equipment used in the production and processing of polycarbonate is disclosed. The thermal treatment in an oxidative atmosphere results in resin and molded articles having improved optical quality.

Process for treatment of metal surfaces

The present invention relates to polycarbonate, polyester carbonate and polyester having end groups derived from alkylsiloxane-substituted phenols, as well as to the use of phenolic compounds having alkylsiloxane substituents as chain terminators in the preparation of polycarbonate, polyester carbonate and polyester, as well as to mouldings and extrudates produced from these polymers, to processes for the preparation of the polymers, and to novel phenolic compounds of formula (2).

Modified polycarbonates, polyester carbonates and polyesters having improved elongation behavior and flame resistance

The invention relates to new 3,4-alkylenedioxythiophenes which are substituted with mesogenic groups, if desired via a bridging group, and their polymeric derivatives (poly-(3,4-alkylenedioxythiophenes)).

Alkylenedioxythiophenes and poly(alkylenedioxythiophenes) containing mesogenic groups

A layer arrangement including at least one transparent substrate having an electrically conductive layer, an electro-optically active layer, and a further substrate having an electrically conductive layer, characterized in that at least one of the two electrically conductive substrates is additionally coated with an organic conductive polymer system, can be employed for the construction of liquid-crystal displays.

Multilayered arrangement for electro-optical device

A composition suitable for sizing of glass fibers is disclosed. The composition contains water dispersible, water-soluble or water emulsifiable resin selected from the group consisting of polyepoxide, polyester, polyvinyl acetate, polyacrylate and polyurethane, water, an organofunctional silane, and a nucleating agent. Optional components include emulsifiers, lubricants, wetting and anti-static agents. Glass fibers sized with the composition are suitable for preparing composites having improved mechanical properties.

Size compositions, sized glass fibers and their use

A water-soluble compound suitable for coating a variety of substrates is disclosed. The compound is prepared by reacting a diisocyanate with a diamino alkoxysilane, optionally also with a nonionic hydrophilic compound. Suitable substrates include oxides in solid form, glass, mineral and wood.

Amino-functional urea-alkoxysilanes, a method for the production thereof and their use

Thermoplastically processable thermotropic molding compounds of thermotropic polycondensates and 0.05 to 5% by weight functionalized polymers, such as for example functionalized polybutadiene oils, polyethylene or polypropylene.

Thermoplastically processable thermotropic molding compounds

Conductive coatings

Aqueous dispersions comprising emulsified polyolefins and metal salts of phosphoric acid esters which are useful for sizing glass fibers.

Aqueous dispersions, process for the production thereof and use thereof

Size compositions for glass fibers which contain, in addition to polyepoxide, polyester or polyurethane film formers; amino - or epoxysilanes, or both; monomeric, aromatic di- or polycarboxylic acids and conventional size components.

Size composition, sized glass fibers and use thereof

A block copolymer resin containing structural units conforming to ##STR1## and a method for its preparation are disclosed. Accordingly, the block copolymer is prepared by reactive blending of an ester-containing polyether sulfone with a polyester. The block copolymer resin thus produced is characterized by its homogeneous morphology. The high level of its mechanical properties makes the resin suitable for a variety of applications.

Polyethersulfone/polyester block copolymers and a process for their

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Krefeld, Germany

Alexander Karbach