Basf Aktiengesellschaft

Basf Aktiengeselschaft

Holger Schoepke

Reinhold J Leyrer

Christoph Hamers

Ralf Brueckmann

Juergen Hartmann

Thomas Wirth

Heinrich Hartmann

Matthias Kroner

Helmut Ritter

Manfred Niessner

Stefan Adams

Heinz Leitner

Bruno Hofer

Dieter Voelker

Dhruva Ramkumar

Hartmut Loewen

Helfried Scheidl

Copolymers prepared by copolymerization of    the variables being defined as follows:

Copolymers and their use for treating flexible substrates

The present invention relates to a laser gain medium comprising at least one active species adapted to be stimulated to emit laser light within a predetermined wavelength range and optical feedback means defining a resonator for said laser light. The feedback means comprise at least one substantially solid cholesteric layer having a substantially planar texture exhibiting selective reflection of light defined by a reflection band tuned to said predetermined wavelength range.

Laser gain medium for solid state dye lasers

A storage-stable aqueous miniemulsion whose disperse phase comprises a cholesteric mixture is prepared and is used for coating and printing on suitable substrates.

Aqueous mini-emulsions which are stable in storage and based on cholesteric mixtures

Optical display elements comprising a layer made from a deformable material (matrix) and from discrete polymer particles whose distribution in the matrix follows a defined spatial lattice structure.

Optical display elements based on aqueous polymer dispersions

The present invention relates to an amplifying medium for solid-state dye lasers and to a solid-state dye laser provided with an amplifying medium of this type. The amplifying medium according to the invention comprises an essentially solid active medium which contains at least one type of activatable particle which can be excited to emit laser light in a certain wavelength range, and optical feedback means which define a resonator for the laser light, where the feedback means comprise an essentially solid feedback medium which has a periodic structure. The feedback medium in the amplifying medium is a polymeric dispersion film having a crystalline structure which comprises, in particular, core/shell particles which can be formed into a film.

Amplifying medium for solid-state dye lasers

Copolymers suitable for use as temporary surface protection for two- or three-dimensional structures and as sizing agents are based on C.sub.1 -C.sub.8 -alkyl acrylates and/or methacrylates and are obtainable by free radical emulsion or solution polymerization of

Copolymers based on C.sub.1 -C.sub.8 -alkyl acrylates and/or

Water-soluble or water-dispersible grafts of proteins with monoethylenically unsaturated monomers are used as sizing agents for staple fiber and filament yarns.

Sizing agent for staple fiber and filament yarns

Aqueous polyester dispersions are prepared by

Growing community of inventors

Neckargemuend, Germany

Holger Schoepke