Process for improving the bond between reinforcing yarns and amorphous ternary copolymers of ethylene, an alpha-olefin, and a nonconjugated polyene in the manufacture of composite rubber articles

Claim 1

PROCESS FOR THE PREPARATION OF COMPOSITE RUBBER ARTICLES FROM RAYON, NYLON, OR POLYESTER YARNS AND UNSATURATED, AMORPHOUS TERNARY COPOLYMERS OF ETHYLENE, A SECOND 1-OLEFIN, AND A NONCONJUGATED POLYENE WITH 3 TO 22 CARBON ATOMS COMPRISING THE STEPS OF (1) WETTING THE YARN WITH AN AQUEOUS DISPERSION AND THEN DRYING THE YARN AT 140-240*C., SAID AQUEOUS DISPERSION CONTAINING (A) AN UNSATURATED, AMORPHOUS TERNIARY COPOLYMER OF 85-29 MOLE PERCENT ETHYLENE, 14.5-70.5 MOLE PERCENT OF PROPYLENE OF BUTENE-1, AND 0.5-20 MOLE PERCENT OF A NONCONJUGATED POLYENE WITH 3 TO 22 CARBON ATOMS THAT HAS BEEN GRAFTED WITH 0.5-50 PERCENT BY WEIGHT OF ACRYLAMIDE, AND (B) A POLYMETHYLOL PHENOL RESIN PREPARED FROM A PHENOL AND FORMALDEHYDE, SAID RESIN COMPRISING FROM 10 TO 40 PERCENT BY WEIGHT OF (A); (2) EMBEDDING THE PRETREATED YARN IN A VULCANIZABLE MIXTURE OF AN UNSATURATED, AMORPHOUS, TERNARY COPOLYMER AS DEFINED IN (A) ABOVE AND VULCANIZING AGENT; AND (3) VULCANIZING THE COMPOSITE ARTICLE RESULTING FROM STEP (2).