Basf Se Corporation

Florian Richter

Hans-Werner Schmidt

Philippe Desbois

Axel Wilms

Gad Kory

Stefan Schwiegk

Christian Schmidt

Rainer Xalter

Arnold Schneller

Hye Jin Park

Achim Stammer

Volker Rauschenberger

Ning Zhu

Wolfgang Schrof

Faissal-Ali El-Toufaili

Joachim Clauss

Claus Gabriel

Heinrich Sack

Rolf Minkwitz

Andreas Wollny

Silke Biedasek

Simon Gramlich

Thomas Meier

Raphael Dabbous

Isa Alexandra Queiroz Da Fonseca

Frank Reil

Rainer Ostermann

Walter Goetz

Rolf-Egbert Gruetzner

Raphaël Dabbous

Caroline Beyer

A process for obtaining caprolactam from mixtures of caprolactam-containing polymers and polyurethane-containing polymers, in particular polyurethane block copolymers, by depolymerization, wherein the depolymerization of the mixture is performed in the presence of 0.05% to 5% by weight of a base at a temperature of 250° C. to 350° C. and a pressure of 5 to 700 mbar and wherein the caprolactam is obtained in gaseous form.

Selective depolymerisation of polyamide 6 to produce caprolactam from mixtures of caprolactam-containing polymers and polyurethane-containing polymers, in particular polyurethane block copolymers

The invention relates to the use of thermoplastic molding compositions comprising

Polyamides with improved optical properties

Disclosed is a method of reducing a haze value in molding compositions including use of colorants selected from anthraquinone colorants, benzimidazolone colorants and perinone colorants. The molding compositions include at least one polyamide and at least one compound of the general formula (I) where x is 1, 2 or 3; R1 and R2 are mutually independently selected from hydrogen, linear C1-C7-alkyl, branched C3-C10-alkyl, unsubstituted or substituted C3-C12-cycloalkyl, unsubstituted or substituted C3-C12-cycloalkyl-C1-C4-alkyl, unsubstituted or substituted aryl and unsubstituted or substituted aryl-C1-C4-alkyl; and Z is selected from C3-C10-alkanediyl, unsubstituted or substituted arylene, unsubstituted or substituted arylene-C1-C4-alkylene-arylene, unsubstituted or substituted heteroarylene, unsubstituted or substituted heteroarylene-C1-C4-alkylene-heteroarylene, unsubstituted or substituted C5-C8-cyclo-alkylene, unsubstituted or substituted C5-C8-cycloalkylene-C1-C4-alkylene-C5-C8-cycloalkylene, unsubstituted or substituted heterocycloalkylene and unsubstituted or substituted heterocycloalkylene-C1-C4-alkylene-heterocycloalkylene.

Polyamide molding compositions with improved optical properties and use of colorants therein

The present invention relates to a polymer film (P), comprising at least one copolyamide, wherein the copolyamide has been prepared by polymerizing at least one lactam (A) and a monomer mixture (M). The present invention further relates to a process for producing the polymer film (P) and to the use of the polymer film (P) as packaging film.

Polymer film comprising a copolyamide of a diamine, a dimer acid and a lactam

The present invention relates to a polyamide composition (PC) which comprises at least one polyamide (P) and at least one additive (A). The present invention further relates to the use of the polyamide composition (PC) in a selective laser sintering process, in an injection molding process, for producing molded articles and in an extrusion process.

Polyamide composition containing a polyamide and an additive

The invention relates to a process for continuously preparing polyamide oligomers. This comprises continuous conveying of an aqueous solution of polyamide-forming monomers from a reservoir vessel into an oligomerization reactor, heating of the aqueous solution beyond a dissolution or storage temperature, the residence time of the monomer solution in the oligomerization reactor being limited and the pressure or the partial vapor pressure of the water being adjusted such that a conversion of monomers to polyamide oligomers does not exceed a maximum value and/or the polyamide oligomers formed do not phase-separate or spontaneously crystallize in solid form, and continuous discharge of the polyamide oligomers from the oligomerization reactor. A polyamide oligomer preparable by this process can be provided continuously in a mixture with water in a process for preparing a semicrystalline or amorphous, thermoplastically processible polyamide and then postcondensed to give a polyamide. This polyamide can be used for production of moldings by means of injection molding, multicomponent injection molding, injection molding/welding, extrusion, coextrusion, blow molding or thermoforming.

Method for continuously producing polyamide oligomers and producing semicrystalline or amorphous polyamides that can be thermoplastically processed

The invention relates to the use of thermoplastic molding compositions comprising A) 30 to 99.99 wt % of a thermoplastic polyamide, B) 0.01 to 10 wt % of a compound of formula I  or &#x2014;O&#x2014;Rradical or  or &#x2014;O&#x2014;Rradical or 

Polyamide compositions having improved optical properties

The present invention relates to a method for producing semi-aromatic copolyamides with a high diamine excess in the reaction batch.

Method for producing semi-aromatic copolyamides with a high diamine excess

The present invention relates to a process for preparing an aliphatic or semiaromatic polyamide oligomer, in which an aqueous composition of the monomers is subjected to an oligomerization at elevated temperature and elevated pressure and the oligomerization output is preferably subjected to an expansion.

Method for the continuous production of an aliphatic or semi-aromatic polyamide oligomer

The present invention relates to a process for preparing an aliphatic or semiaromatic polyamide, in which a polyamide prepolymer is subjected to a solid state polymerization.

Method for producing aliphatic or partially aromatic polyamides, said method comprising a solid-phase polymerization process

The present invention relates to a polymer composition comprising at least one polyamide and at least one urea compound of the formula I where x is 1, 2 or 3; Rand Rare selected from hydrogen, linear C-C-alkyl, branched C-C-alkyl, unsubstituted or substituted C-C-cycloalkyl, unsubstituted or substituted C-C-cycloalkyl-C-C-alkyl, unsubstituted or substituted aryl and unsubstituted or substituted aryl-C-C-alkyl; and Z is selected from C-C-alkanediyl, unsubstituted or substituted arylene, unsubstituted or substituted aryl unsubstituted or substituted ene-C-C-alkylene-arylene, unsubstituted or substituted heteroarylene, unsubstituted or substituted heteroarylene-C-C-alkylene-heteroarylene, unsubstituted or substituted C-C-cycloalkylene, C-C-cycloalkylene-C-C-alkylene-C-C-cycloalkylene, unsubstituted or substituted heterocycloalkylene and heterocycloalkylene-C-C-alkylene-heterocycloalkylene. This urea compound is used for improving the optical properties of the polyamide polymer composition. The present invention also relates to shaped articles obtained from said composition and to novel urea compounds.

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Mannheim, Germany

Florian Richter