Reaction products of unsaturated dicarboxylic acid derivatives with cyclopentadiene polymers

Claim 1

RESINOUS PRODUCTS COMPRISING THE REACTION OF A COMPOUND OF THE CLASS CONSISTING OF ALPHA, BETA-ETHYLENICALLY UNSATURATED DICARBOXYLIC ACIDS, ALPHA, BETA-ETHYLENICALLY UNSATURATED DICARBOXYLIC ACID ANHYDRIDES, ALPHA, BETA-ETHYLENICALLY UNSATURATED DICABOXYLIC ACID ESTERS, AND ALPHA, BETA-ETHYLENICALLY UNSATURATED DICARBOXYLIC ACID NITRILES, WITH FROM 1 TO 1.3 MOLECULAR EQUIVALENTS OF A MATERIAL SELECTED FROM THE CLASS CONSISTING OF (1) A LOW MOLECULAR WEIGHT HEAT-POLYMERIZED HOMPOLYMER OF CYCLOPENTADIENE, (2) MIXTURES OF LOW MOLECULAR WEIGHT HEAT-POLYMERIZED HOMOPOLYMERS OF CYCLOPENTADIENE, AND (3) LOW MOLECULAR WEIGHT HEAT-POLYMERIZED COPOLYMERS OF CRUDE FRACTIONS OBTAINED FROM THE CRACKING OF HYDROCARBON MATERIALS AND WHICH CONSISTS OF C5 AND SUBSTITUTED C5 CONJUGATED DIOLEFINS IN WHICH THE MAJOR PORTION OF SAID CONJUGATED DIOLEFINS ARE CYCLIC, SAID HEAT POLYMERS AND COPOLYMERS HAVING BEEN PREPARED IN THE ABSENCE OF ADDED CATALYST, THE RESIN-FORMING REACTION BEING CARRIED OUT BY HEATING THE REACTANTS UP TO A TEMPERATURE OF 160* C. FOR A PERIOD OF ONE TO SEVERAL HOURS, FOLLOWED BY INCREASED HEATING UP TO 250* C. FOR A FURTHER PERIOD UP TO SEVERAL HOURS.