Abstract: There is described a pressure-sensitive recording and transfer material containing in a first sheet a coating comprising one of the components (A) and (B) or a solvent for these components and in a second sheet the other or both of the components (A) and (B) and an electron-attracting and colour-developing material as component (C),(A) being a polycyclic compound of the formula ##STR1## where X is a monocyclic or polycyclic aromatic or heteroaromatic radical, Y is a substituent which is detachable as an anion, Q.sub.1 is --O--, --S--, ##STR2## Q.sub.2 is --CH.sub.2 --, --CO--, --CS-- or --SO.sub.2 --, R is hydrogen, C.sub.1 -C.sub.12 alkyl, C.sub.5 -C.sub.10 cycloalkyl, aryl, such as phenyl, or aralkyl, such as benzyl, and the ring A, which may be substituted, is an aromatic or heterocyclic radical of 6 ring atoms with or without a fused aromatic ring which may likewise be substituted, and(B) being an organic condensation component.

Abstract: A process for producing paper or cardboard sized in the pulp with epoxide-amine-polyamide reaction products is disclosed.This process comprises adding to the fibre suspension, which has a pH value of 5 to 8,(A) at least one water-soluble higher molecular polyelectrolyte, which is cationic if the pH value of the fibre suspension is 6.5 to 8 and anionic if the pH value of the fibre suspension is 5 to 7, followed by(B) at least one water-soluble or water-dispersible salt of an epoxide-amine-polyamide reaction product,and further processing the fibre suspension into the form of paper or cardboard.

Abstract: A process for producing paper or cardboard which is sized in the pulp with epoxide-amine-polyamide reaction products is disclosed.In this process there are added to the fibre suspension(A) at least one water-soluble, anionic, substantive direct dye and/or optical brightener, followed by(B) at least one water-soluble or water-dispersible salt of an epoxide-amine-polyamide reaction product,whereupon the fibre suspension is further processed into paper or into cardboard.