... rubber industry 3>High quality Product Name: Coumarone Indene Resin Coumarone-Indene resins function as a plasticizer, tackifier and ... natural and most synthetic rubbers. Application: Coumarone-indene resin has excellent cementing, antioxidant, waterproof, thermal stability, acid ... 0.5PH value5-8Acid value mgkOH/g1.0Moisture0.1Deep color resin is commonly used as rubber softener, rubber additive, ...