Rubber tackifiers comprising the reaction product of (1) a polymethylene polyphenol, (2) a phenol non-reactive at its para position and (3) an aldehyde

Claim 1

A VULCANIZABLE RUBBER COMPOSITION WHICH COMPRISES A VULCANIZABLE SYNTHETIC RUBBERY POLYMER AND THE REACTION PRODUCT OF (1) A POLYMETHYLENE POLYPHENOL PREPARED BY HEAT REACTING IN THE PRESENCE OF A FRIEDEL-CRAFTS CATALYST (A) A PHENOL SELECTED FROM THE GROUP CONSISTING OF PHENOL, ALKYL SUBSTITUTED PHENOLS, ALKOXY SUBSTITUTED PHENOLS AND HALOGEN SUBSTITUTED PHENOLS AND (B) A MIXTURE OF CHLORINATED LONG-CHAIN HYDROCARBONS HAVING FROM ABOUT 12 TO 30 CARBON ATOMS PER MOLECULE AND CONTAINING FROM ABOUT 15% TO ABOUT 45% OF CHLORINE BY WEIGHT OF THE CHLORINATED HYDROCARBONS, (A) AND (B) BEING PRESENT IN SUCH AMOUNT THAT THE RATIO OF CHLORINE ATOMS TO MOLES OF PHENOL IS FROM ABOUT 0.1:1 TO ABOUT 2:1, (2) A PHENOL WHICH IS NON-REACTIVE TO ALDEHYDE AT ITS PARA POSITION, AND (3) AN ALKDEHYDE SELECTED FROM THE GROUP CONSISTING OF FORMALDEHYDE, ACETALDEHYDE, BUTYRALDEHYDE, ISOBUTYRALDEHYDE AND FURFURALKEDHYDE, THE PROPORTIONS USED IN FORMING THE REACTION PRODUCT OF (1) (2) AND (3) BEING SUCH THAT THE RATIO OF THE NUMBER OF MOLES OF POLYMETHYLENE POLYPHENOL (1) TO THE NUMBER OF MOLES COMBINED OF POLYMETHYLENE POLYPHENOL (1) AND PHENOL (2) IS FROM ABOUT 0.01:1 TO ABOUT 0.5:1 AND THE RATIO OF THE NUMBER OF MOLES OF ALDEHYDE (3) TO THE NUMBER OF MOLES COMBINED OF POLYMETHYLENE POLYPHENOL (1) AND PHENOL (2) IS FROM ABOUT 0.5:1 TO ABOUT 1.5:1, THE REACTION PRODUCT OF (1) (2) AND (3) BEING FORMED AT A TEMPERATURE WITHINT THE RANGE FROM ABOUT 80*C. TO 125*C. AND IN THE PRESENCE OF A CATALYTICALLY EFFECTIVE AMOUNT OF ACID CATALYST.