Preparation of water-soluble, nitrogen-containing...

Details Preparation of water-soluble, nitrogen-containing... Preparation of water-soluble, nitrogen-containing...

C - Chemistry, Metallurgy

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C08G 73/02 (2006.01) C08G 69/48 (2006.01) D21H 17/55 (2006.01) D21H 21/10 (2006.01)

Patent

CA 1196454

O.Z. 0050 /35413 Abstract of the Disclosure: Water-soluble, nitrogen- containing condensates are prepared by reacting a cross- linking agent, obtained by a) condensing 1 mole of a dicarboxylic acid of 4 to 10 carbon atoms with from 1 to 2 moles of a polyalkylene- polyamine, having 3-10 basic nitrogen atoms in the mole- cule, to give a polyamidoamine and b) reacting the polyamidoamine with epichlorohydrin and/ or dichlorohydrin in aqueous solution at a pH of from 4.5 to 8.5 and at below 100°C, from 1 to 130 parts by weight of epichlorohydrin and/or dichlorohydrin being empioyed per 100 parts by weight of the polyamidoamine from (a), with ammonia, a primary amine, a polyamine containing 2 to 4 N atoms, a polyether-amine or a polyamidoamine in aqueous solution at below 100°C. The condensates are used as retention aids, floc- culants and drainage aids in papermaking.

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