Wolff Walsrode Ag

Branislav Boehmer

Klaus Szablikowski

Lutz Hoppe

Wolfgang Koch

Rudolf Behn

Hans-Gunter Poersch-Panke

Heinrich Leffers

A method for the preparation of water-soluble, cationic amine polymers by the continuous or batch-wise reaction of a polymer having primary, secondary or tertiary amine functions in its side chain or primary chain as a starting material, wherein the reaction is carried out with an epoxide, a glycidyl ether or a mixture of different epoxides and glycidyl ethers in aqueous solution without additional solvent at a temperature of 30.degree. to 90.degree. C. and at a pH of 8 to 14 within 3 to 30 minutes, the epoxides or glycidyl ethers are added as one batch or in portions, and after adjusting the pH of the aqueous solution of the cationic polymer, which is &gt;13.5 after the reaction with epoxide or glycidyl ether, using a mineral or carboxylic acid, the product solution is obtained without additional work-up steps.

Method for the preparation of cationic, water-soluble polymers and their

Auxiliary agent for improving the retention of flushable solids, the drainage of suspensions and the rapid treatment of industrial waters, effluents and sludges, especially in paper making which comprises the crosslinking of an intermediate product A with another intermediate product B in the presence of an polyfunctional compound to form the auxiliary agent C, wherein the intermediate product A comprises polyamines which contain quaternary nitrogen and which are formed by the action of polyvalent and/or monovalent amines on the reaction products of the secondary amine hydrochlorides with epichlorohydrin and wherein the intermediate product B comprises basic-polyamino-amides.

Auxiliary agent for improving retention, drainage and treatment

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Walsrode, Germany

Branislav Boehmer