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Dive into the research topics where Harro Witt is active.

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Featured researches published by Harro Witt.


Archive | 1972

Preparation of cross-linked particles of polyurethane or polyurea containing ionic groups

Dieter Dieterich; Harro Witt


Archive | 1986

Production of aromatic diamino compounds using a modified raney catalyst

Dieter Dr. Becher; Udo Birkenstock; Eckart Waldau; Harro Witt


Archive | 1968

Microporous sheet and a process for the production thereof

Dieter Dieterich; Artur Reischl; Harro Witt


Archive | 1984

Process for the continuous preparation of aromatic diamines with simultaneous generation of steam

Dieter Dr. Becher; Harro Witt; Hermann Dr. Dallmeyer; Siegbert Humburger; Wolfgang Schneider; Harald Stein


Archive | 1988

Process for the separation of sulfuric and nitric acid from a mixture containing dinitrotoluene produced during the nitration of toluene

Harro Witt; Heiko Beckhaus


Archive | 1970

Process for the production of microporous polyurethane (urea) sheet structures permeable to water vapor

Artur Reischl; Dieter Dieterich; Harro Witt


Archive | 1986

Use of modified raney catalysts in the production of aromatic diamino compounds

Dieter Dr. Becher; Udo Birkenstock; Eckart Waldau; Harro Witt


Archive | 1973

Thermoplastic polyurethane polyurea powders

Dieter Dieterich; Helmut Reiff; Harro Witt


Archive | 1988

Process for separating sulphuric acid and nitric acid from dinitrotoluene mixtures obtained during the nitration of toluene

Harro Witt; Heiko Beckhaus


Archive | 1987

PROCESS FOR WORKING UP AQUEOUS AMINE SOLUTIONS

Heiko Beckhaus; Harro Witt; Dieter Dr. Becher; Hermann Dr. Dallmeyer; Uwe Jens Zarnack

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