Abstract: A catalyst and accelerator for an epoxy system which consists of a halogeisphenate of a catalytically active tertiary amine and which is obtained in a solid form practically water insoluble and odor free but which nevertheless possess the catalytic activity of the tertiary amine. The application describes the proportion of the catalyst by reacting an aqueous suspension of the halogenobisphenol with the tertiary amine, the proportion of epoxy resin systems containing the catalyst and the epoxy resin systems thus formed.

Abstract: Cationic resins soluble in water and stable in solution, based upon melamine and formaldehyde, primary or secondary aliphatic amines, alkanolamines or a polyamine are prepared by reacting melamine with formaldehyde in a methylolation reaction in methanol in the presence of one or more of the aforementioned amines by heating for a period of fifteen minutes to two hours at an alkaline pH of 7.5 to 10 at a temperature of 60.degree. to 85.degree. C. The methylation-condensation reaction which follows is carried out at a pH of 5 to 6, preferably 5.4 to 5.7 until a viscosity is obtained which has a minimum of seventeen seconds measured at 20.degree. C. by an AFNOR No. 6 consistometric head. The methylation reaction is then terminated by the addition of aqueous formaldehyde and condensation is carried out for thirty minutes to two hours at 60.degree. to 90.degree. C. and a pH of 5.5 to 7, preferably a pH of 6 to 6.5.

Abstract: A cationic resin which is thermally settable or thermally hardenable, for use in improving the moisture resistance of cellulosic fibrous materials such as paper, is produced by reacting at least one dicarboxylic acid with a mixture of at least one polyamine and at least one dialkanolamine to produce a polyamide-polyester copolymer soluble in water and subsequently condensed with epichlorohydrin.