Para-alpha-cumylphenol-para-substitutedphenol-formaldehyde resin

Claim 1

A PROCESS FOR THE PRODUCTION OF NON-HEAT-REACTIVE PARA - A - CUMYLPHENOL - PARA - SUBSTITUTED - PHENOLFORMALDEHYDE RESIN HAVING OUTSTANDING CHEMICAL AND PHYSICAL CHARACTERISTICS ADAPTED PARTICULARLY FOR SPECIAL SURFACE COATINGS WHICH COMPRISES HEATING A MIXTURE OF PARA-A-CUMYLPHENOL AND A PARA-SUBSTITUTED-PHENOL SELECTED FROM THE GROUP CONSISTING OF A PARA-ALKYL-SUBSTITUTEDPHENOL WHEREIN THE ALKYL GROUP HAS 3-10 INCLUSIVE CARBON ATOMS AND 2,2''-BIS-(DIHYDROXY DIPHENYL)-PROPANE AND MIXTURES THEREOF IN A MOLAR RATIO OF 0.33:0.67 TO 0.90:0.10 OF PARA-CUMYLPHENOL TO PARA-SUBSTITUTEDPHENOL TOGETHER WITH FORMALDEHYDE IN THE MOLAR PROPORTION OF 1.0-1.5 MOLS OF FORMALDEHYDE PER MOL OF TOTAL PHENOL, I.E. TOTAL MOLS OF PARA-A-CUMYLPHENOL AND PARASUBSTITUTED-PHENOL, IN THE PRESENCE OF AN ACID CATALYST AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 75-250*C. TO EFFECT REACTION OF THE PHENOLS AND FORMALDEHYDE.