Bayer Aktiengesellschaft

Wolfgang Lehmann

Friedhelm Muller

Wilfried Lobach

Gunther Cramm

Knut Hammerstrom

Kurt Ley

Gunter Kolb

Janos Muszik

Gerhard Troemel

Gunther Cramn

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

Water-soluble polyamines which are obtainable by reacting

Polyamines containing amide groups

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,

Water-soluble polyamines which (a) have an average molecular weight of above 1,000, (b) contain at least one grouping of the formula

Polyamines containing acid groups that are useful in papermaking

Water-soluble polyamines which (a) have an average molecular weight of above 1,000 (b) contain at least one grouping of the formula

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Leverkusen, Germany

Wolfgang Lehmann