| abstract |
The invention discloses resin-modified oil-extended rubber. The present invention is based on the unexpected discovery that hydrocarbon traction resins can be dispersed into oils used to make oil-extended emulsions and solution rubbers for improved performance characteristics. For example, the present technology allows for the incorporation of hydrocarbon traction resins into rubber at levels higher than is typically possible using conventional compounding techniques. In tire tread compounds, this provides improved wet traction characteristics without compromising cured stiffness (dry traction) and final properties (chipping/chipping resistance). This technique can be used to blend resins into almost any synthetic rubber that might benefit from oil extension. More specifically, the present invention is applicable to the manufacture of resin-modified oil-extended rubber, which includes solution styrene-butadiene rubber (SSBR), emulsion styrene-butadiene rubber (ESBR), polybutadiene rubber, synthetic Polyisoprene rubber, EPDM, isoprene-butadiene rubber, styrene-isoprene-butadiene rubber, silicone rubber, nitrile rubber, carboxylated nitrile rubber, etc. Wait. It is used in the manufacture of resin-modified solution styrene-butadiene rubber (SSBR), emulsion styrene-butadiene rubber (ESBR), high cis-1,4- Of particular value are polybutadiene rubber and synthetic polyisoprene rubber. |