Rubber composition and preparation

Claim 1

A COMPISITION OF MATTER COMPRISING A RUBBER SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER, SYNTHETIC HOMOPOLYMRS OF CONJUGATED DIENES AND SYNTHETIC COPOLYMERS OF CONJUGATED DIENES AND ETHYLENICALLY UNSATURATED MONOMERS, AND A RUBBER PROCESSING OIL COMPRISING A PRODUCT OBTAINED BY HYDROGENATING A NORMALLY LIQUID POLYCYCLIC AROMATIC CONCENTRATE FROM A CRACKED PETROLEUM GAS OIL CONTAINING 80 TO 100 WEIGHT PERCENT OF AROMATIC HYDROCARBONS AND HAVING AN AVERAGE RATIO OF AROMATIC TO NAPHTHENE RINGS IN THE AROMATIC MOLECULES THEREOF IN THE RANGE OF FROM 2 TO 30, AT A TEMPERATURE IN THE RANGE FROM 450 TO 750*F. AND AT A PRESSURE IN THE RANGE FROM 100 TO 3000 P.S.I.G. TO OBTAIN A HYDROGENATED PRODUCT CONTAINING 60 TO 100 WEIGHT PERCENT OF AROMATIC HYDROCARBONS AND HAVING AN AVERAGE RATIO OF AROMATIC TO NAPHTHENE RINGS IN THE AROMATIC MOLECULES THEREOF IN THE RANGE FROM 0.25 TO 5 AND 0.25 UNITS LESS THAN THE CORRESPONDING RATIO IN SAID CONCENTRATE.