Basf Aktiengesellschaft

Max-planck-gesellschaft Zur F&#xf6;rderung Der Wissenschaften E. V.

Basf Se Corporation

Solutia Incorporated

Basf Akiengesellschaft

Basf Akitengesellschaft

Arno Boehm

Willi Helfer

Klaus Muellen

Peter Blaschka

Matthias Krieger

Peter Erk

Martin Koenemann

Georg Henning

Harald Arms

Helmut Reichelt

Ruediger Sens

Jianqiang Qu

Bernhard Dung

Dirk Hammel

Erik Reuther

Simone Schaefer

Felix Mueller

Peter Schlichting

Volker Weyrauch

Gerhard Wagenblast

Karl Siemensmeyer

Norbert Schneider

Wolfgang Schrof

Stefan Becker

Neil Gregory Pschirer

Klemens Mathauer

Jin Mizuguchi

Andreas Stohr

Friedrich-Wilhelm Raulfs

Reinhold Rieger

Walter Kurtz

Walter Maechtle

Robert Parker

Torsten Freund

Sabine Kielhorn-Bayer

Christopher Kohl

Alban Glaser

Ulrike Schloesser

Gabriele Mattern

Simon Schambony

Lorenz Siggel

Paul Delavier

Harutyun Hanciogullari

Paul Daniel Garrett

Benno Sens

Peter Rossmanith

Howard D Booth, Jr

Hermann Bidlingmaier

Takahiro Ikeda

Georg Beck

Ulrike Rohr

Takanori Wakebe

Yuri Avlasevic

Michel Sieffert

Werner Rautenberg

Juergen Romeis

Dibenzorylenetetracarboximides of the general formula I in which the variables are each defined as follows:

Dibenzorylenetetracarboximides as infrared absorbers

Rylene derivatives of the general formula I in which the variables are each defined as follows:  

Substituted rylene derivatives

Provided is a process for fusion-bonding plastic parts with the aid of laser radiation of a wavelength outside the visible region, wherein a bonding region of a plastic part to be bonded comprises at least one material which is transparent in the visible region of the electromagnetic spectrum, is substantially colorless and absorbs the laser radiation, wherein the material comprises at least one nonionic compound that is resistant to the laser radiation, has a thermal stability of at least 300&#xb0; C. and is selected from polycyclic organic compounds, doped tin oxides and hexaborides MBof lanthanides and alkaline earth metals M. Also provided is a preparation suitable for producing fusion-bonded plastic parts with the aid of laser radiation whose wavelength is outside the visible region, the preparation comprising: a thermoplastic matrix polymer suitable for forming the plastics parts; at least one of said material; optional UV stabilizers; and optional additives.

Method for welding together plastic parts with the aid of laser radiation

A process for converting perylene-3,4:9,10-tetracarboximides of the general formula I in which Rand Rare each unbranched, branched or cyclic C-C-alkyl to a form suitable for use as fluorescent dyes, which comprises

Conversion of perylene-3,4:9,10-tetracarboximides to a form suitable for use as fluorescent dyes

A process for preparing perylene-3,4:9,10-tetracarboxylic dianhydride, comprising: dimerizing a naphthalene-1,8-dicarboximide of the formula IIa; reoxidizing the resulting alkali metal salt of the leuco form of the perylene-3,4:9,10-tetracarboxylic diimide of the formula Ia; hydrolyzing the diimide to the tetraalkali metal salt of perylene-3,4:9,10-tetracarboxylic acid in the presence of an inert organic solvent, of an alkali metal base and of water; and subjecting the tetraalkali metal salt of perylene-3,4:9,10-tetracarboxylic acid to the action of an aqueous inorganic acid to convert it into perylene-3,4:9,10-tetracarboxylic dianhydride; wherein Ris cyclohexyl or phenyl which may each be substituted by up to three C-C-alkyl radicals, and the dimerizing is in a substantially homogeneous reaction medium consisting essentially of an apolar aprotic organic solvent and an alkali metal base.

Preparation of perylen-3,4:9,10-tetracarboxylic dianhydride and also of naphtalene-1,8-dicarboximides

Novel crystalline forms of and a process for converting perylene-3,4:9,10-tetracarboximide of the general formula I to a form used as a fluorescent dye. The process including: a) dissolving or suspending the perylene-3,4:9,10-tetracarboximide in a solvent to obtain a solution or suspension; and b1) cooling the solution obtained in step a) to a temperature at or below the crystallization temperature of the perylene-3,4:9,10-tetracarboximide and, if the solvent is organic, removing excess solvent until the first crystals form, otherwise, adding water or dilute aqueous solutions of the solvent until the first crystals form, and maintaining the solution at that temperature for further crystallization; or b2) cooling the suspension obtained in step a) to or below the crystallization temperature when the temperature in step a) was above the crystallization temperature, and maintaining the suspension at the temperature for further crystallization to form one or more solvate crystals.

Method for converting perylen-3,4:9,10-tetracarboxylic acid diimides into a form suitable for use as a fluorescent dye

A process for preparing quaterrylene-3,4:13,14-tetracarboximides of the general formula I in whichR, R' are each independently hydrogen or optionally substituted C-C-alkyl, C-C-cycloalkyl or aryl or hetaryl;which comprises reacting a perylene-3,4-dicarboximide of the general formula IIa in the presence of a base-stable, high-boiling, organic solvent and of an alkali metal base or alkaline earth metal base, with a perylene-3,4-dicarboximide of the general formula IIb in which X is hydrogen, bromine or chlorine.

Method for producing quaterrylene-3,4:13, 14-tetracarboxy diimides by direct synthesis

A description is given of the use of naphthalene-1,8-dicarboxylic monoimides of the formula (I), in which Ris hydrogen, alkyl, alkenyl, cycloalkyl, cycloalkenyl, heterocycloalkyl, aryl or heteroaryl and Ris a radical containing at least one &#x3c0; electron system containing a carbon atom and at least one further atom selected from carbon, oxygen, and nitrogen, with the proviso that the radical contains at least one atom other than carbon; to protect organic material from the damaging effects of light, of compositions which comprise at least one naphthalene-1,8-dicarboxylic monoimide of the formula (I) in an amount which provides protection from the damaging effects of light, and at least one organic material, and of new naphthalene-1,8-dicarboxylic monoimides (I).

Use of 4-cyano-naphthalene-1, 8-dicarboximide derivatives and related compounds to protect organic material from the damaging effects of light

The current invention relates to a perylene-3,4-dicarboxylic anhydride, substituted in the 9-position, of the general formula III wherein Z is bromine or cyano, and processes for preparing 9-bromoperylene-3,4-dicarboxylic anhydride and 9-cyanoperylene-3,4-dicarboxylic anhydride.

9-cyano-substituted perylene-3,4-dicarboxylic acid monoimides

1,6,9,14-Tetrasubstituted terrylenetetracarboxylic diimides are particularly useful for absorbing and emitting in the long-wavelength red and near infrared region of the electromagnetic spectrum.

1,6,9,14-tetrasubstituted terrylene tetracarboxylic acid diimides

A 9-cyano-substituted perylene-3,4-dicarboxylic monoimide I where the variables are defined in the specification.

9-Cyano-substituted perylene-3, 4-dicarboxylic monoimides

Black perylene pigments which comprise one of the isomers of the formula Ia or Ib in which

Black perylene pigments

Rylene dyes of the general formula I where the variables are defined as follows: 

Rylene dyes

A process for preparing perylene-3,4:9,10-tetracarboxylic diimides of the general formula I comprising in a reaction medium consisting essentially of an apolar aprotic organic solvent and an alkali metal base and subsequently reoxidizing the resulting alkali metal salt of the leuco form of the perylene-3,4:9,10-tetracarboxylic diimide in the presence of a polar solvent.

Method for the production of perylen-3,4:9,10-tetracarboxylic acid diimides and perylen-3,4:9,10-tetracarboxylic acid dianhydride and naphtalene-1,8-dicarboxylimides

A process for preparing terylene-3,4:11,12-tetracarboximides I where the variables are each defined as follows: in the presence of a base-stable, high-boiling organic solvent and of an alkali metal or alkaline earth metal base, with a naphthalene-1,8-dicarboximide III in which X is hydrogen, bromine or chlorine.

Method for the production of terylene-3,4:11,12-tetracarboxydiimides by direct synthesis

Growing community of inventors

Mannheim, Germany

Arno Boehm