Rutgerswerke Aktiengesellschaft

Ruetgerswerke Aktiengesellschaft

Trg Technologie Und Recyclingservice Gmbh

Eberhard Giebeler

Gerd Collin

Helmut Berenbold

Detlef Wehle

Arnold Alscher

Gerhard Wilhelm

Klaus Moraw

Franz Konig

Helmut Hartner

Bernhard Bluhm

Heinzpeter Nilles

Volker Beez

Wolf Dietrich

Process and device for recovering amines and use of residues obtainable

A biocidal preservative for cellulose-containing products containing a biocidally effective amount of a polymeric quaternary ammonium borate obtained by simultaneous reaction of (A) at least one member of the group consisting of boric acid and salts and esters thereof and (B) an amine of the formula ##STR1## and (C) ethylene oxide or propylene oxide wherein R.sub.1 is alkyl or alkenyl of 8 to 22 carbon atoms and R.sub.2 is hydrogen, alkyl of 1 to 22 carbon atoms or --CH.sub.2 CH.sub.2 NH.sub.2 or R.sub.1 is alkyl of 1 to 4 carbon atoms and R.sub.2 is --(CH.sub.2 CH.sub.2 O).sub.x --H or --(CH.sub.2 CH.sub.2 CH.sub.2 O).sub.x --H, R.sub.3 is selected from the group consisting of hydrogen, --(CH.sub.2 CH.sub.2 O).sub.x --H, (CH.sub.2 CH.sub.2 CH.sub.2 O).sub.x --H and --CH.sub.2 CH.sub.2 CH.sub.2 NH.sub.2, R.sub.4 and R.sub.6 are individually selected from the group consisting of alkyl of 1 to 4 carbon atoms, --(CH.sub.2 CH.sub.2 O).sub.x --H and --(CH.sub.2 CH.sub.2 CH.sub.2 O).sub.x --H, and R.sub.5 and R.sub.7 are individually --(CH.sub.2 CH.sub.2 O).sub.x --H and --(CH.sub.2 CH.sub.2 CH.sub.2 O).sub.x --H, A is selected from the group consisting of --(CH.sub.2).sub.n, --(CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2).sub.n -- and --(CH.sub.2 CH.sub.2 --NH--CH.sub.2 CH.sub.2).sub.n --x is an integer from 1 to 55 and n is an integer of 1 to 20, the molar ratio of A:B:C being 1:2 to 20:0.6 to 1.5.

Preservatives for cellulose containing products

A novel suspension of boric acid comprising a concentrated, finely dispersed suspension of boric acid and a small amount of a soluble borate salt in an aqueous medium and a method of preparing the same.

Boric acid compositions

Wood that is especially suited for the manufacture of resonating bodies, is improved according to a process in which small amounts of reactive components of thermosetting polymers are introduced into the wood shortly before or during a heat treatment under pressure.

Process for improving wood and use of the improved wood

A process is described for the modification of wood and wood products by heat treatment in a closed, heatable vessel, wherein the water content of the starting material is controlled to be no higher than 10% by weight.

Process for the modification of wood

Growing community of inventors

Schriesheim, Germany

Eberhard Giebeler