... resins function as a plasticizer, tackifier and reinforcing resin for natural and most synthetic rubbers. Application: Coumarone-indene ... Technical SpecificationStandardColor number, sample : toluene=1: 118# Softening point°C(ring and ball method)70-80Ash content 550°C %≤0.2-0. ... for making types, rubber tubes, covey belt, and triangle belt and rubber shoes. It may improve rubber process capability, ...