Henkel Kommanditgesellschaft Auf Aktien

Johann-Friedrich Fues

Wolfgang Ritter

Wilfried Raehse

Heinz Mueller

Claus-Peter Herold

Stephan Von Tapavicza

Thomas Foerster

Marcus Claas

Otto Koch

Josef Kretschmann

Karl-Heinz Buettgen

Ovidiu Dicoi

Joerg-Martin Schmidt

Process for the facilitated waste disposal of working substances based

The invention relates to flowable and pumpable multicomponent mixtures based on a multiphase mixture of water and oil containing emulsifiers and, if desired, other soluble, emulsifiable and/or dispersible auxiliaries for their use in exploration by drilling and/or for the further treatment of the wells thus drilled. The invention is characterized by the use of emulsifiers or emulsifier systems which, in the particular multicomponent mixture in question, lead to temperature-controlled phase inversion at a phase inversion temperature (PIT) in a temperature range of which the upper limit is so far below the working temperature of the multicomponent mixture in geological exploration that the water-based part of the multicomponent mixture is present as a disperse (invert) phase in the continuous oil phase (w/o invert emulsion) while the lower limit of this temperature range enables the multicomponent mixture to be converted into an o/w emulsion with a continuous aqueous phase. At least partly nonionic emulsifiers or emulsifier systems with a PIT of 0 to 100.degree. C. are particularly suitable. The invention enables the requirements in regard to technical performance, ecological compatibility and cost/effectiveness ratio to be optimally satisfied.

Multicomponent mixtures for use in geological exploration

Process for the simplified separation of multicomponent mixtures of at

The invention relates to at least partly resorbable materials for replacing and/or joining bones and auxiliaries for implanting prosthesis material in living bone tissue which contain as their essential components body-compatible ceramic materials in admixture with body-resorbable oligomers and/or polymers of lower hydroxycarboxylic acids, more particularly glycolic acid and/or lactic acid (resin component) and which are characterized in that the resin component is produced using molecular-weight-regulating co-reactants from the class of mono- or polyfunctional carboxylic acids or corresponding alcohols and is substantially freed from free carboxyl groups.

New materials for bone replacement and for joining bones or prostheses

Process for drying useful materials for detergents and cleaning products

The invention is a resorbable, viscous to solid wax for the mechanical staunching of blood on hard body tissue, particularly bones, based on oligomers of glycolic acid and/or lactic acid and derivatives thereof with monofunctional and/or polyfunctional alcohols and/or corresponding carboxylic acids. The new waxes are characterized by containing body-compatible salts of organic and/or inorganic acids which are formed by corresponding reaction of any free carboxyl groups present in the oligomer wax and/or are incorporated in the wax in homogeneous distribution as added salts.

Resorbable bone wax

Simplified process for sterilizing semi-solid to solid preparations

Growing community of inventors

Grevenbroich, Germany

Johann-Friedrich Fues