Bayer Aktiengesellschaft

Aziz E Sayed

Rolf Dhein

Ludwig Bottenbruch

Hans-Detlef Heinz

Hans-Rudolf Dicke

Dieter Freitag

Dieter Arlt

Manfred Schmidt

Karsten-Josef Idel

Uwe Claussen

Ralf Dujardin

Harald Pielartzik

Wilfried Zecher

Edgar Ostlinning

Hermann Perrey

Volker Eckhardt

Ludger Heiliger

Hubert Goldbach

Hermann Brinkmeyer

Ralf Lange

Klaus Luttermann

Arno Becker

Peter Orth

Dieter L Ohr

The invention relates to polyamide molding compounds with increased viscosity, high thermal stability and favorable mechanical properties, to a process for their production and to their use.

Polyamide compounds containing diepoxide and having high viscosity

A method of identifying different plastics, wherein each plastic is provided with a plurality of fluorescent dyes which differ in terms of their emission frequencies and/or in terms of the duration of their fluorescence, so that a fluorescence pattern, which is distinguished by the duration of the fluorescence and/or by the frequencies occurring, can unambiguously be assigned to each plastic.

Method for the identification of plastics

The invention relates to free-flowing polyamide molding compounds which are characterized by a content of new liquid-crystalline compounds corresponding to general formulae (I) and/or (II) and to the new liquid-crystalline compounds corresponding to general formulae (I) and/or (II).

Free-flowing polyamide molding compounds

The invention relates to thermoplastic molding compounds based on polyamides and bisphenols having glass temperatures equal to or above those of the polyamides used, the bisphenols corresponding to the following formula ##STR1## The invention also relates to a process for their production and to their use for the production of moldings, films, fibers and other articles.

Polyamide molding compounds containing bisphenols of high glass

This invention relates to thermoplastic polyimides of 2,2-bis-phtalic acid anhydro-(4)-propane and 2,2-bis-(4-aminophenoxyphenyl-propane.

Special polyimides as thermoplasts

Thermotropic, fully aromatic polyesters of p-hydroxybenzoic acid, 3,4'-benzophenone-dicarboxylic acid and certain bisphenols have a previously unknown combination of very high rigidity and high toughness.

Thermotropic, fully aromatic polyesters with excellent figidity and

Thermotropic fully-aromatic polyesters which contain radicals of 3,4'- and/or 4,4'-dihydroxybenzophenone in addition to radicals of p-hydroxybenzoic acid, iso- and optionally terephthalic acid, hydroquinone and/or 4,4'-dihydroxydiphenyl, have good rigidity and toughness and yet are easily processible.

Thermotropic aromatic polyesters with good rigidity and toughness,

Thermotropic, wholly-aromatic polyester carbonates which contain condensed radicals of 4,4'-dihydroxydiphenyl have a reduced viscosity in the melt, without the mechanical properties of the product suffering therefrom.

Thermotropic, aromatic polyester carbonates, process for the production

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Leverkusen, Germany

Aziz E Sayed