Technical Paper Archive

This site contains all papers presented at Rubber Division, ACS Technical Meetings from 2000-2018. Meetings prior to 2000 are incomplete and papers are added as they are digitized.

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Tailoring Polymer Molecular Structure in the EPDM Slurry Process


Event: 160th Technical Meeting
Location: Cleveland, OH
Date: October 16, 2001
Author: Susmita Bhattacharjee*, Harald Bender and Dilip Padliya
Paper Number: 144

Price: $20.00

  • EPDM is the most extensively used elastomer in non-tire applications, and still shows growth potential in a mature rubber market. Although, EPDM has been in existence for quite some time, the technology is constantly evolving to meet aggressive market demands. Different production processes produce EPDM, and therefore, careful engineering of polymer micro- and macro- structures is necessary to meet the desired performance characteristics. This paper highlights the process capability of the EPDM slurry technology to tailor and control the molecular structural design The catalyst and the polymerization technology produce EPDMS with a wide spectrum of chemical composition and Mooney viscosity. The relatively narrow molecular weight distribution of the polymers has been designed to offer the best combination of processing and physical properties. A unique technology for the incorporation of long chain branching in the polymer has been developed. This highly selective catalyst technology controls the degree of branching and molecular weight distribution without any side reaction, while offering the flexibility to vary polymer composition and molecular weight. The EPDMS made with the modified molecular structure have a good balance of processing and performance characteristics.

    Papers from 160th Technical Meeting

    Items from 160th Technical Meeting