Bayer Aktiengesellschaft

Bayer Corporation

Arno Becker

Ludger Heiliger

Ulrich R Grigo

Uwe Claussen

Klaus Horn

Charles E Lundy

Aziz E Sayed

Klaus Sommer

Hans-Ulrich Siegmund

Klaus Luttermann

Peter Orth

Alexa Sommer

Boudewijn Van Lent

The present invention relates to an optical solid-phase biosensor for the detection of molecules which can be labelled with a fluorescent dye for the identification of substances in solution, for which there exists a biomolecule (receptor) which specifically recognises these and is chemically bonded to the uppermost layer of one or more layers of polyions on the surface of the sensor, by measurement of the Forster transfer between another dye molecule which is bonded in one of the uppermost layers of the sensor, and the said dye molecule.

Optical solid-phase biosensor based on polyionic layers labelled with

The invention relates to the use of nucleus-brominated phthalic acid derivatives, optionally in combination with polyalkylene oxides corresponding to formula (V) ##STR1## in which R is H, C.sub.1-6 alkyl, tetrahydropyranyl or a silyl group,

Use of nucleus-brominated phthalic acid anhydride for stabilizing

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

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Krefeld, Germany

Arno Becker