Ciba-geigy Corporation

Ciba-geigy Ag

Rudolf F Wurster

Quentin Bowes

Jaroslav Haase

Hans Wegmuller

Peter Liechti

Jurg Merz

Peter Rohringer

Frank Lohmann

Jeroslav Haase

An anionic adsorbent which has been prepared by reacting (a) a monomeric compound which contains at least one anionic group and at least one amide group, especially a carboxamide group, which can be methylolated, with (b) an aminoplast precondensate which is free from salt-forming anionic groups. The novel adsorbent is particularly suitable for removing cationic substances, such as cationic dyes, and a heavy metal ions from aqueous solutions, especially from effluents.

Anionic adsorbent

A cationic adsorption agent which is obtained by reaction of

Cationic adsorption agent

A novel process for the purification of industrial effluents, wherein the effluents are brought into contact with cationically modified cellulose-containing materials, the cationic constituent of which is bonded to the cellulose part via the grouping of the general formula

N-Methylolcarboxamide compounds

A novel process for the purification of industrial effluents, wherein the effluents are brought into contact with cationically modified, cellulose-containing materials, the cationic constituent of which is bonded to the cellulose part via the grouping of the general formula

Process for the purification of industrial effluents

A process for removing cationic substances from an aqueous solution, which comprises bringing the solution into contact with a cellulose-containing material which has been chemically modified anionically and in which the anionic constituent is bonded to the cellulose moiety by a grouping of the general formula

Process for removing cationic substances from aqueous solutions

A process for removing heavy-metal ions from aqueous solutions, particularly from effluents. The process comprises bringing the aqueous solutions into contact with a water-insoluble adsorbent which has been produced from:

Process for removing heavy-metal ions from aqueous solutions

Cationically modified, cellulose-containing materials

A polysaccharide-containing adsorbent for the removal of heavy metal ions from an effluent which adsorbent has been manufactured from

Polysaccharide-containing adsorbent

A cellulosic absorption material for the removal of heavy metal ions from fluids, which material contains at least one chelate-forming amino acid group which is bonded through the group of the formula ##STR1## to the cellulose portion wherein the carbonyl group is linked to the chelate-forming radical and the oxygen is linked to the cellulose portion.

Ionically modified cellulose materials for removal of heavy metal ions

The invention relates to a flameproofing agent which contains a brominated cycloalkane and a dispersant. The flame-proofing agent may also contain a protective colloid and/or water. In addition, a method of providing synthetic materials of polyester or polyamide with a flame-retardant finish with the aqueous flameproofing agents is disclosed.

Agent for flame proofing synthetic fibrous material

A process for the purification of industrial effluents which comprises bringing said effluents into contact with an adsorption material which contains a carrier that is pretreated with a precipitate of a basic nitrogenous polymeric compound with an activated clay mineral.

Growing community of inventors

Pfeffingen, Switzerland

Rudolf F Wurster