Acrolein copolymers

Claim 1

A HARDENED RESIN COMPRISING THE COPLYMERIZATION PRODUCT OF (A) THE POLYCONDENSATION PRODUCT OF (1) AN ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF ACROLEIN AND MIXTURES OF ACROLEIN AND METHACROLEIN WITH (2) AT LEAST ONE AT LEAST BIVALENT COMPOUND SELECTED FROM THE GROUP CONSISTING OF MONOMERIC SATURATED ALIPHATIC EPOXY COMPOUNDS HAVING FROM 2 TO 15 CARBON ATOMS, PHENYL GLYCIDYL ETHER, ALKYL PHENYL GLYCIDYL ETHER, DICYCLOPENTADIENE DIOXIDE, EPOXY RESINS DERIVED FROM BISPHENOLS AND EPICHLOROHYDRIN, EPOXY RESINS DERIVED FROM POLYHYDRIC ALIPHATIC ALCOHOLS AND EPICHLOROHYDRIN, POLYHYDRIC ALCOHOLS CONTAINING FROM 2 TO 19 CARBON ATOMS AND ESTERS OF DICARBOXYLIC ACIDS AND POLYHYDRIC ALIPHATIC ALCOHOLS SAID ESTERS CONTAINING AT LEAST TWO ALCOHOLIC HYDROXY GROUPS, SAID POLYCONDENSATION HAVING BEEN CARRIED OUT IN THE PRESENCE OF A CATALYTIC AMOUNT OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF AN ALKALI METAL NITRITE, ALKALINE EARTH METAL NITRITE, ALKALI METAL ALUMINUM HUDRIDE AND AN ALKALI METAL BORON HYDRIDE WITH (B) A POLYMERIZABLE COMPOUND HAVING THE GROUPING H2C=C< AND BEING LIQUID UNDER ORDINARY CONDITIONS, SAID COPOLYMERIZATION PRODUCT HAVING BEEN OBTAINED UNDER THE CATLAYTIC ACTION OF AN ORGANIC PEROXIDE.