Struktol HP 55 Mixture of aromatic hydrocarbon resins and fatty acid derivatives Struktol Plasticizers Rubber - Elastomer (Chloroprene, Butyl …) STRUKTOL ® HP 55 HIGH PERFORMANCE PROCESSING ADDITIVE Mixture of dark aromatic hydrocarbon resins and fatty acid derivatives. STRUKTOL ® HP 55 is a high performance process additive developed for the rubber industry. Benefits have been shown in the tire industry, particularly where solution SBR and NR are being used. Process-ing benefits are seen without adverse effects on dynamic properties. This leads to potential application in other tire and non-tire applications (conveyor belts, motor mounts, hose, etc.) STRUKTOL ® HP 55 offers improved mixing and milling characteristics, hot tear and reversion resis-tance are directionally improved. Testing has shown a reduction in Tan Delta when used as a partial re-placement for process oil. Other benefits include viscosity reduction and improved flow properties. The processability and rever-sion resistance improvement may provide potential for higher productivity and higher temperature/faster cure times. STRUKTOL ® HP 55 can be added with the polymers in most mix cycles. 5 - 15 phr Mixture of dark aromatic hydrocarbon resins and fatty acid derivatives. Used as a high performance process additive for the rubber industry. Offers improved mixing and milling characteristics, hot tear and reversion resistance. Provides viscosity reduction and improved flow properties. Use level: 5-15 phr.