Henkel Kommanditgesellschaft Auf Aktien

Gesellschaft Fuer Biotechnologische Forschung Mbh

Josef Kretschmann

Franz-Josef Carduck

Wolfgang Ritter

Willi Wuest

Hubert Harth

Johann-Friedrich Fues

Dirk Springer

Wolf-Dieter Deckwer

Carmen Tag

Hanno Biebl

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

A process for the transformation of glycerol into 1,3-propanediol by microorganisms comprising fermenting the microorganisms in media having a glycerol content of from about 5% to about 20% by weight under standard anaerobic fermentation conditions and recovering the 1,3-propanediol. The microorganisms according to the invention do not suffer catabolic repression by the large amount of 1,3-propanediol produced by the process.

Fermentive production of 1,3-propanediol

The invention relates to the use of selected carboxylic acid esters which are liquid under reaction conditions and correspond to general formula (I)

Process for the sulfonation and/or sulfatization of organic components

Growing community of inventors

Langenfeld, Germany

Josef Kretschmann