Bayer Aktiengesellschaft

Bayer Materialscience Ag

Bayer Intellectual Property Gmbh

Covestro Deutschland Ag

Holger Warth

Thomas Eckel

Dieter Wittmann

Andreas Seidel

Karsten Reihs

Herbert Eichenauer

Manfred Schmidt

Heinrich Alberts

Werner Rasshofer

Eckhard Wenz

Dirk Wegener

Bernd Keller

Peter Heitk&auml;mper

Marc Vathauer

Gisbert Michels

Silke Kratschmer

Burkhard K&ouml;hler

Hongchao Li

Pierre Vanhoorne

Yuzhong Wang

Yanyan Wang

Sichong Chen

Flore Kempkes

Olaf Meincke

The present disclosure pertains to a blend of aromatic polycarbonate and polylactic acid, the method for preparing the same and the use thereof. In the present invention a transesterification catalyst is added during the preparing process with regard to the blend of aromatic polycarbonate and polylactic acid to improve the compatibility of the components in the blend. The blend of aromatic polycarbonate and polylactic acid is provided with the good mechanical properties, thermal processibility and flame retardance properties, and can be widely applied to mechanical product or parts, electronic equipments and/or parts, construction material and/or commodities.

Blend of aromatic polycarbonate and polylactic acid, the method for preparing the same and the use thereof

An impact-modified polycarbonate composition is disclosed. The composition features good processing stability, low temperature toughness and chemical resistance to stress cracking. It includes two copolymers of a vinylaromatic compound and a functionalized vinylolefinic compound and is suitable for the production of complex components.

Polycarbonate molding compositions

A thermoplastic molding composition is disclosed. The composition that contains at least one member selected from the group consisting of aromatic polycarbonate and polyester carbonate, a rubber-modified vinyl (co)polymer, and calcium carbonate having average particle diameter of less than 100 nm is particularly suitable for making articles resistant to hydrolysis.

Polycarbonate molding compositions with improved hydrolysis resistance

A thermoplastic molding composition containing talc is disclosed. The composition wherein talc has a median particle size of less than 1000 nm further contains a polycarbonate and/or polyester-carbonate, and a graft polymer having as graft base a rubber having a glass transition temperature of below about 10&#xb0; C. is suitable for preparing molded articles having improved mechanical properties, such as weld line strength, elongation at break and toughness at low temperatures.

Impact-modified polymer composition

A thermoplastic molding compositions having improved stress cracking resistance is disclosed. The composition contains The structure of the branched resin contains at least one residue of a branching agent selected from among tri-functional phenolic monomer and tetra-functional phenolic monomer.

Poly(ester) carbonate molding compositions

A composition containing a graft polymer based on acrylonitrile/ethylene propylene rubber/styrene (AES) and an additive is disclosed. The additive is one which increases the '&#x394;soft phase' of the composition making it possible to produce moldings with improved toughness at low temperatures, without substantially changing the melt volume rate.

Thermoplastic blends with improved low-temperature toughness

A thermoplastic molding composition comprising polycarbonate resin, at least one impact modifier and highly pure talc is disclosed. The talc is characterized in that it contains AlOin an amount of less than 1% relative to the weight of said talc. The composition that features high toughness, good processability and low coefficient of thermal expansion is suitable for the manufacture of exterior parts of vehicles.

Polycarbonate molding compounds containing a special talc

The present invention relates to polymer blends containing a component selected from the group poly(ester)carbonates, graft polymers or mixtures thereof, polyalkylene naphthalate as the second component optionally together with a further component selected from the group of vinyl (co)polymers, polyalkylene terephthalates or mixtures thereof, wherein mixtures of polycarbonate, polyalkylene naphthalate and optionally polyalkylene terephthalate contain no tetrafluoroethylene polymer.

Polymer blends containing modified polyesters

A thermoplastic molding composition comprising a graft polymer is disclosed. The graft polymer contains: The weight average molecular weight of the continuous phase is 130,000 to 275,000 g/mole and the disperse phase is characterized in that its, weight average particle size is less than 0.90 &#x3bc;m. The molding composition is characterized in improved resistance to weathering.

Graft polymers based on ethylene/&#x3b1;-olefin rubbers and process for their production

A polycarbonate composition containing inorganic material with an anisotropic particle geometry and with an iron content of less than about 100 ppm is disclosed. The composition is suitable for producing molded articles exhibiting improved mechanical properties both at ambient and low temperatures.

Polycarbonate compositions with reduced iron content

A thermoplastic molding composition having improved mechanical properties is disclosed. The composition contains (A) aromatic polycarbonate and/or polyester carbonate (B) at least one graft rubber, obtained by emulsion polymerization of styrene and acrylonitrile in the presence of at least two rubber latices of type (B1) and (B2) where (B1) has a particle diameter dof &#x2266;350 nm, a particle size distribution range of 30 nm to 100 nm, and a gel content of 70 wt. %, and (B2) has a particle diameter of &#x2267;350 nm, a particle size distribution range of 50 nm to 500 nm, and a gel content of &#x2267;70 wt. %, and the difference in the average particle diameter of B1 and B2 is &#x2267;50 nm, (C) an optional copolymer of styrene and or acrylonitrile and for methyl methacrylate and/or N-substituted maleinimide, and optionally (D) flame retardant as well as optionally conventional additives.

Polycarbonate molding materials containing graft rubber

A thermoplastic molding composition having improved impact strength at low temperatures is disclosed. The composition contains A) polycarbonate and/or polyester carbonate B) a graft polymer based on ethylene-&agr;-olefin rubber as graft base, C) wollastonite having carbon content greater than 0.1% relative to the weight of the wollastonite and D) at least one of triglyceride, aliphatic saturated hydrocarbon and aliphatic unsaturated hydrocarbon.

Thermoplastic compositions with improved low-temperature impact strength

The invention relates to thermoplastic copolycarbonate compositions and moulded parts containing the latter having improved stress cracking resistance and thermal stability.

Composition based on copolycarbonates

A composite material is described which comprises at least two layers of different plastics materials which are directly bonded to each other, wherein A) one layer of the composite comprises polyurethane, and B) a layer of the composite which is directly bonded to layer A) comprises a thermoplastic plastics material which is different from the material which layer A) comprises, wherein layer A) contains homogeneously distributed particles, which are at least coated with a thermoplastic plastics material which is different from the material comprising layer A), and which have a particle size of &lE;50 nm, wherein the total surface area of the particles corresponds at least to the extent of the total interface between layers A) and B). A process for the production of these composites is also described, as is the use of these composites in motor vehicle construction.

Composite material comprising polyurethane and at least one thermoplastic plastics material, a process for the production thereof and the use thereof in motor vehicles

The present invention relates to composite materials made of at least one composite layer of a polyurethane and of a second composite layer which is directly bonded to the first layer and which consists of a thermoplastic material that is different from the polyurethane of layer A). The polyurethane material of layer A) is characterized by a residual content of free reaction components containing ether groups of no more than 400 ppm, and preferably of no more than 100 ppm. The invention also relates to a process for the production of these composite materials and to a method of their use as materials in motor vehicles.

Stable adhesive composite material made of polyurethane and of another thermoplastic material, a process for its production and a method for its use in motor vehicles

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Dormagen, Germany

Holger Warth