Reinforcing elements for rubber

Abstract

Abstract FIBER REINFORCEMENT IS COATED WITH AN AQUEOUS MIXTURE OF RUBBER LATEX, TWO-STAGE LIQUID POLYHYDRIC PHENOL ALDEHYDE AROMATIC AMINE RESIN AND SUFFICIENT ADDITIONAL REACTIVE ALDEHYDE TO RENDER THE RESIN THERMOSETTING UP REACTION THEREWITH. THE RESIN, WHICH IS PREPARED PRIOR TO ADMIXTURE WITH THE LATEX IS PREFERABLY FORMED BY A STEPWISE REACTION OF ANILINE WITH FORMALDEHYDE, THEN RESORCINOL, AND THEREAFTER ADDITIONAL FORMALDEHYDE, THE LAST-MENTIONED ADDITION OF FORMALDEHYDE BEING IN THE FORM OF AN ALCOHOLIC SOLUTION. THE COATED FIBER REINFORCEMENT IS DRIED AND THEN, WHILE IN CONTACT WITH AN UNVULCANIZED SOLID RUBBER MATRIX CONTAINING CURATIVES, IS SUBJECTED TO SUFFICIENT HEAT AND PRESSURE TO VULCANIZE AND FORM THE RUBBER INTO A REINFORCED ARTICLE DISPLAYING IMPROVED ADHESION BETWEEN THE RUBBER AND REINFORCEMENT UNDER CONDITIONS OF HIGH TEMPERATURE AND DYNAMIC STRESS. PARTICULARLY WORTHWHILE RESULTS HAVE BEEN OBSERVED IN THE BONDING OF POLYESTER FIBERS TO RUBBER, ESPECIALLY IN PNEUMATIC TIRES REINFORCED WITH POLYESTER CORDS.

Inventors

• 👤 Peter A Yurcick
• 👤 Charles Tyler Bills

Bibliographic Details