... conten : 0.02 Wt% 4. Color: 17# coumarone resin for rubber& plastics1;Purity : 100%2.Softening Point: 97-1153. Ash ... Loading: 18MT/20FCL8. Application:Coumarone-indene resin has excellent cementing, antioxidant, waterproof, thermal stability, acid and alkali chemical stability. Deep ... as rubber softener, rubber additive, and is mainly used for making types, rubber tubes, covey belt, and triangle belt ...