Production of dimensionally stable hardened copolymer monohydric phenol, dihydric phenol-aldehyde resinous mass

Claim 1

A CONTINUOUS DIMENSIONALLY STABLE SET-UP AND HARDENED COPOLYMERIZED MONOHYDRIC PHENOL, DIHYDRIC PHENOL-ALDEHYDE RESINOUS MASS THE RESIN COMPONENT THEREOF BEING TRANSPARENT AND CONSISTING OF THE REACTION PRODUCT OF A WATER-CONTAINING SYRUP CONTAINING A SYRUP BASE HAVING PRESENT A PERMANENTLY FUSIBLE TWO-STAGE REACTION PRODUCT OF A PHENOLIC BODY CONSISTING OF A MONOHYDRIC PHENOL AND A DIHYDRIC PHENOL, AND AN ALDEHYDE WHICH IS CONDENSABLE WITH AND HEATREACTIVE WITH SAID PHENOLIC BODY TO FORM A RESINOUS CONDENSATION PRODUCT THEREWITH, SAID PHENOLIC BODY CONTAINING AT LEAST 10% OF A MONOHYDRIC PHENOL AND AT LEAST 20% OF A DIHYDRIC PHENOL IN WHICH THE HYDROXY GROUPS ARE ON THE SAME CARBON RING, THE PERCENTAGES BEING ON A MOLAR BASIS, SAID SYRUP HAVING A VISCOSITY VARYING BETWEEN 6 AND 30 POISES; A REACTION-ACCELERATING CATALYST AND A FORMALDEHYDE-LIBERATING SETTING AGENT IN AN AMOUNT TO SET AND HARDEN THE RESIN COMPONENT OF THE SYRUP, SAID SET-UP AND HARDENED RESINOUS MASS BEING COMPATIBLE WITH WATER AND RETAINING BETWEEN 10 AND 35% OF WATER FUNCTIONING TO INHIBIT SHRINKAGE DURING THE SETTING UP AND HARDENING OF THE RESULTING RESINOUS REACTION PRODUCT SAID HARDENED RESINOUS MASS BEING RESISTANT TO CRACKING ON AGING.