C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 73/02 (2006.01) D21F 1/66 (2006.01) D21H 11/14 (2006.01) D21H 17/54 (2006.01) D21H 17/56 (2006.01) D21H 21/10 (2006.01)
Patent
CA 2150112
Condensation products of polyalkylene polyamines produced by a) the partial amidation of polyalkylene polyamines and b) the condensation of the partially amidated polyalkylene polyamine with at least difunctional cross-linking agents to form cross-linking polyalkylene polyamines having a viscosity of at least 100 mPas in 20% aqueous solution at 20°C, process for producing the condensation products of polyalkylene polyamines by partial amidation of polyalkylene amines with carboxylic acids, carboxylic acid esters, carboxylic acid anhydrides or carboxylic acid halogenides and cross-linking the partially amidated polyalkylene polyamines with at lease difunctional cross-linking agents, wherein to one part by weight of the partially amidated polyalkylene polyamines are added 0.001 to 10 parts by weight of a cross-linking agent, and the use of the condensation products thus obtained as dehydrating, flocculating and retention agents and as fixing agents in papermaking.
Linhart Friedrich
Lorencak Primoz
Moench Dietmar
Reuther Wolfgang
Scherr Guenter
Basf Aktiengesellschaft
Borden Ladner Gervais Llp
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