C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/268, 402/320
C08G 73/00 (2006.01) C08G 73/02 (2006.01) D21H 17/56 (2006.01)
Patent
CA 1188041
Abstract Non-crosslinking, water-soluble polyamines which can be obtained by reacting A) basic polyureas which have been prepared by conden- sation 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 ali- phatic, araliphatic, cycloaliphatic or heterocyclic poly- amines 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 Image in which R denotes H or CH3, the indices y are in each case identical or different and denote the number 0 or 1 and x denotes a number from 4 to 2,500, or mixtures of these polyalkylenepolyamines with amines of the same general formula, but in which x denotes a number from 1 to 3, and C) compounds which are polyfunctional towards amino groups, are used as agents for increasing the retention of fibres, fillers and pigments, for accelerating the drainage in the production of paper and for working up effluents from paper machines by filtration, sedimentation and flotation.
354579
Cramm Gunther
Kolb Gunter
Lehmann Wolfgang
Lobach Wilfried
Muller Friedhelm
Aktiengesellschaft Bayer
Fetherstonhaugh & Co.
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