Bayer Aktiengesellschaft

Friedhelm Muller

Wolfgang Lehmann

Gunter Kolb

Wilfried Lobach

Gunter Sackmann

Gunther Cramm

Knut Hammerstrom

Wulf Von Bonin

Joachim Probst

Horst Nickel

Kurt Ley

Heinz Baumgen

Manfred Groll

Janos Muszik

Gerhard Troemel

Peter Woditsch

Joachim Konig

Klaus Walz

Udo Eckstein

Gunter Linde

Udo-Winfried Hendricks

Wilfried Nolte

Hans Theidel

Jochen Koll

Gerhard Winter

Peter Mummenhoff

Wilfried Keller

Heinz Fischer

Nikolaus Schon

Hans-Ludwig Honig

Gunther Cramn

Werner Bieber

Fluorescent brightener salts of the formula ##STR1## in which A denotes the anion of an anionic cellulose fluorescent brightener,

Paper-coating slips containing fluorescent brighteners

Low-foam surface sizing agents for paper in the form of aqueous or aqueous-alcoholic alkali metal, amine or ammonium salt solutions of copolymers containing carboxylic acid semi-amide groups obtainable by reacting copolymers of maleic acid anhydride and diisobutylene and/or terpolymers of maleic acid anhydride, diisobutylene and a vinyl monomer copolymerizing with maleic acid anhydride, with from 5 to 50 mole percent, based on maleic acid anhydride groups, of a primary aliphatic or aromatic monoamine. The solutions may optionally contain urea or derivatives of urea.

Low-foam surface sizing agents for paper which contain copolymeric

Forgery-proof paper, which exhibits a distinct coloration when treated with an oxidizing agent and, if appropriate, a reducing agent, contains, as the reagent, a compound of the formula ##STR1## wherein A represents N or C,

Forgery-proof paper

The aqueous solution of a statistical terpolymer containing quaternized amino groups and having a regular chemical structure of

Cationic sizing agents for paper

New surface-active phosphonic acid esters, which are inter alia suitable as emulsifiers and dispersants, a process for their preparation and emulsions and dispersions of water soluble polymers containing the new phosphonic acid esters and having high stability on storage.

Surface-active phosphonic acid esters

Non-crosslinking, water-soluble polyamines which can be obtained by reacting

Polyamines containing urea groups prepared from lactam or

Non-crosslinking, water-soluble polyamines which can be obtained by reacting (A) basic polyureas which have been prepared by condensation of ureas with polyamines containing at least three amino groups, of which at least one is a tertiary amino group, or with mixtures of these polyamines with aliphatic, araliphatic, cycloaliphatic or heterocyclic polyamines containing two primary or two secondary amino groups or one primary or one secondary amino group, and optionally with .omega.-aminocarboxylic acids containing at least three carbon atoms, or lactams thereof, (B) polyalkylenepolyamines of the general formula ##STR1## in which R denotes H or CH.sub.3, the indices y are in each case identical or different and denote the number 0 or 1 and

Polyamines containing urea groups

Cationic azo dyestuffs of the general formula ##STR1## wherein X.sup.(+) denotes an ammonium group,

Cationic triazinylamino azo dyestuffs

Water-soluble polyamines which are obtainable by reacting

Polyamines containing amide groups

Aqueous solutions of copper phthalocyanine-sulphonic acid salts of the formula ##STR1## in which Cu--Pc a copper phthalocyanine radical,

Dyestuff solutions, their preparation and their use for dyeing paper

Water-soluble condensation products which are not self-crosslinking and are prepared from polyacidic amines and compounds which are polyfunctional towards amino groups, in an aqueous medium at temperatures from 0.degree. to 120.degree. C. and pH values above 6 in the presence of emulsifiers are used in the production of paper.

Aqueous reaction of polyamine with alkylene dihalide in presence of

Water-soluble polyalkylenepolyamines which are not self-crosslinking and contain quaternary dialkylammonium groups, and which are obtained by reaction of polyalkylenepolyamines of the general formula ##STR1## in which R denotes hydrogen or methyl,

Polyalkylenepolyamines containing quaternary dialkylammonium groups

Water-soluble amines which are not self-crosslinking and are obtainable by reacting (A) one or more water-soluble or water-dispersable amines containing amide groups, prepared by condensation of (a) 1 mol of dicarboxylic acid or functional derivatives thereof, (b) 0 to 30 mols of aminocarboxylic acids containing at least three C atoms, or lactams thereof, and (c) 1.4 to 30 mols of polyalkylenepolyamines of the general formula ##STR1## in which R denotes H or CH.sub.3,

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Odenthal, Germany

Friedhelm Muller