New Compounding Concepts based on very high Molecular weight EPDM - the Development of Keltan 13561C

摘要

The evaluation of a series of very high molecular weight EPDMs with varying Mooney viscosity (ML), oil content and ethylene content in compounds with 400, 500 and 600 phr loading enabled the optimum design of a unique, very high molecular weight EPDM (Keltan 13561C), which satisfies the special requirements for automotive EPDM body seals. Keltan 13561C is produced via "Controlled Long Chain Branching" technology and Keltan ACE (TM) catalysis. Customer evaluations have shown that i) mixing and extrusion of highly loaded compounds up to 650 phr based on Keltan 13561C do not pose any major problems and ii) the potential compound cost savings amount to around 10%. Furthermore the very high molecular weight can be exploited to enhance technical performance, especially tensile strength.