Basf Aktiengesellschaft

Basf Se Corporation

Other

Universitat Hamburg

Metall-chemie Technologies Gmbh

Gerrit A Luinstra

Bernhard Rieger

Markus Allmendinger

Berend Eling

Joachim Queisser

Hans-Helmut Görtz

Ekkehard Lindner

Hermann Gausepohl

Omar M Yaghi

Christian Schade

Volker Warzelhan

Graham Edmund Mc Kee

Markus Schmid

Hans-Josef Thomas

Ulrich M&uuml;ller

Peter Deglmann

Michael Slany

Rainer Moors

Jens Assmann

Dirk Meckelnburg

Xavier Sava

Stephan J&uuml;ngling

Ferenc Molnar

Matthias Müller

Helmut Kipphardt

Hansj&ouml;rg Sch&auml;ch

Irina Fink

J&uuml;rgen Demeter

Florian Becker

Janina Hengelsberg

Monika Förster

Andreas Baumann

Tristan Pelzer

Wolfram Wielandt

Jan Dilcher

Michael Henes

Tim Beermann

Described herein are processes for producing moldings comprising oxazolidinone groups, where polyisocyanate (a) is mixed with at least one organic compound (b) having two or more epoxide groups, at least one catalyst (c) for the isocyanate/epoxide reaction, and optionally auxiliary and additive materials (d) to form a reaction mixture, which is introduced into or applied to a mold and reacted to give moldings including oxazolidinone groups, where the catalyst (c) for the isocyanate/epoxide reaction includes a compound of the general formula [M(R)(R)(R)(R)][X I], where M is a nitrogen atom or a phosphorus atom, R, R, Rand Rare an organic radical, X is fluorine, chlorine, bromine or iodine, I is iodine, and n stands for rational numbers from 0.1 to 10.

Method for producing compounds having oxazolidinone groups

The invention relates to polyurethanes obtainable by reaction of (a) polyisocyanates A selected from modified or unmodified 4,4'-methanediphenyl diisocyanate, higher nuclear homologs of 4,4&#x2032;-methanediphenyl diisocyanate, isocyanated groups containing prepolymers based on 4,4&#x2032;-methanediphenyl diisocyanate, and mixtures thereof, with (b) compounds having at least two isocyanate-reactive hydrogen atoms, comprising (b1) block copolymers formed from a polybutadienol and a cyclic ester as component B1, and (b2) low molecular weight extenders or crosslinkers each having a molecular weight of 62 to 500 g/mol as component B2.

Polyester-modified polybutadienols for producing polyurethane elastomers and thermoplastic polyurethanes

A thermoplastic copolymer prepared from acrylonitrile and para-alpha-dimethylstyrene via bulk or solution polymerization has an improved heat distortion temperature and can be used together with graft copolymers and further components for the preparation of thermoplastic moldings.

Copolymers of para-alpha dimethylstyrene and thermoplastic compositions

The present invention relates to a process for preparation of polycarbonates with weight-average molar mass M&#x2267;230,000 g/mol and with &#x2266;2% by weight content of cyclic compounds, including the following steps:

Preparation and use of ultrahigh-molecular-weight polycarbonates

Disclosed is a method for producing an aqueous polymer dispersion, according to which unsaturated monomers are first polymerized by means of suitable catalysts, whereupon the obtained polymers that are swelled with all or some of the remaining unreacted monomers are added to surface-active substances and water in a last step in which the obtained polymers are not entirely separated from the remaining monomers.

Method for the production of an aqueous polymer dispersion

Lactones are prepared by catalytic carbonylation of oxiranes using a catalyst system comprising

Catalyst and method for the carbonylation of oxiranes

Catalyst for the carbonylation of oxiranes

A process for preparing thermoplastic poly(3-hydroxyalkanoates) with a molar mass greater than 6 000 g/mol and a melting point in the range from 70 to 170&#xb0; C., by reacting an oxirane compound with carbon monoxide in the presence of a transition metal catalyst which has rhodium(0), nickel(0), iron(0), cobalt(0) or palladium(0) as central metal and has been chelated with neutral Lewis bases, and also in the presence of diisocyanates, ortho esters, acetals, anhydrides, PO, MgO, MgCl, MgSO, zeolites, or a mixture of these, at a pressure in the range from 1 to 250 bar and at from room temperature to 150&#xb0; C.

Method for the production of thermoplastic poly(3-hydroxyalkanoates)

A process is described for preparing polyoxymethylene by contacting a formaldehyde source with a catalyst of the formula I[MLL]Z&#x2003;&#x2003;(I)

Production of polyoxymethylene and suitable catalysts

A process is described for preparing polyoxymethylene by contacting a formaldehyde source with a catalyst of the formula I[CpML]Z&#x2003;&#x2003;(I)

Production of polyoxymethylene and suitable (II) catalysts

The invention relates to a catalytical process for preparing poly(3-hydroxyalkanoates) by copolymerizing an oxirane compound with carbon monoxide in the presence of which comprises carrying out the copolymerization in the presence of at least one nucleophile other than hydroxy-substituted pyridine compounds.

Method for the production of poly(3-hydroxyalkanoates) in the presence of a nucleophile

A polyalkylene carbonate, an alternating copolymer, may be prepared by the ring opening of an alkene oxide or an alkene oxide precursor in the presence of carbon dioxide or any substance delivering carbon oxide, in the presence of at least one catalyst comprising a metal-organic framework material, wherein said framework material comprises pores and a metal ion and an at least bidentate organic compound, said bidentate organic compound being coordinately bound to the metal ion.

Process for producing polyalkylene carbonates

In a process for polymerizing dienes in a solvent comprising vinylaromatic monomers, the polymerization is carried out in the presence of a metal compound of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo or W as catalyst and a Lewis acid as cocatalyst and, if desired, an alkylating agent and, if desired, a regulator. This process can be used for preparing high-impact polystyrene, acrylonitrile-butadiene-styrene copolymers or methyl methacrylate-butadiene-styrene copolymers.

Method of producing rubber compositions in styrene solutions with sterically superior chelate catalysts

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Hamburg, Germany

Gerrit A Luinstra