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New Accelerated and Scorch Protected VAROX Peroxides for Polymer Crosslinking R.T. Vanderbilt Company, Inc. Slide 2 Requirements at various steps of the process Compounding (120 135C) From 2 step to 1 step mixing Faster mixing speed (higher temperature) Extrusion (130 145C) Faster extrusion speed (higher temperature) Greater output requires faster curing Injection Molding (170 185C) Faster curing Higher number of mold cavities (design) Compression Molding (170 185C) Faster curing Increase filling time to decrease rejects higher t S 5 lower t 90 higher t S 2 or lower t 90 higher t S 2 higher t S 2 and/or lower t 90 higher t S 2 Slide 3 Two additional product ranges VAROX SP = S corch P rotected Enhanced scorch protection VAROX CST = Controlled Speed Technology Enhanced scorch protection and faster rate of cure Technology initially developed in VAROX 802-40C/KE, then with other peroxides such as VAROX 231 and DBPH... Slide 4 Two additional product ranges VAROX SP = S corch P rotected Enhanced scorch protection VAROX CST = Controlled Speed Technology Increased scorch protection and faster cure time Slide 5 tS5tS5 MHMH t90 VAROX SP : Scorch Protected Slide 6 t90 tS5tS5tS5tS5 MHMH MHMH VAROX SP : Scorch Protected Slide 7 t 90 Faster radical trapping SP: source of radicals MHMH tS5tS5tS5tS5 = M H VAROX SP : Scorch Protected Slide 8 M H and t 90 are comparable t s 5 X 3 at 125C VAROX SP: Scorch Protected Slide 9 -The lower the temperature, the more efficient the scorch protection VAROX 802-40SP VAROX 802-F40 X 3.5 X 3.0 VAROX SP: Scorch Protected X 2.0 + 12C - Possibility to increase mixing speed as a 12C temperature increase does not affect process safety Slide 10 - Same reactivity as VAROX 802-40 VAROX 802-40SP VAROX 802-40 VAROX SP: Scorch Protected Slide 11 Possibility to compound faster by increasing mixing speed with no scorch threat (temperature can be increased with no scorch threat) Possibility to go from 2 step mixing to 1 step mixing (cost saving) Possibility to get faster curing process by increasing temperature with no scorch threat (injection, transfer and compression) Solve scorch problems (for sensitive compounds or scorchy EPDM i.e., ENB vs. DCP) Less downtime devoted to equipment cleanup (extruder, etc.) Less rejects Possibility of reducing the amount of antioxidant in the rubber formulation With such scorch resistance: Slide 12 Two additional product ranges VAROX SP = S corch P rotected Enhanced scorch protection Concept has been also evaluated on other peroxide grades Slide 13 VAROX DBPH-50-SP (development) M H is not impacted t 90 is not impacted t s 5 is multiplied by 3 at 145C Slide 14 VAROX 231-XL-SP (development) M H is not impacted t 90 is not impacted t s 5 is multiplied by 3 at 110C Slide 15 VAROX 230-XL-SP (development) M H is unchanged t 90 is unchanged t s 5 is multiplied by 4 at 110C Slide 16 Two additional product ranges VAROX SP = S corch P rotected Enhanced scorch protection VAROX CST = Controlled Speed Technology Enhanced scorch protection and cure time Slide 17 MHMH tS5tS5 VAROX CST: Controlled Speed Technology t90 Slide 18 Fast Radical Trapping SP: source of radicals tS5tS5 tS5tS5 MHMH t90 = M H Faster Curing t90 VAROX CST: Controlled Speed Technology Slide 19 Comparable efficiency Cure time is 20% lower with 802-CST VAROX CST: Controlled Speed Technology Scorch time x 3 Slide 20 - Same scorch as VAROX 802-40-SP X 3.5 X 3.0 X 2.0 VAROX 802-40SP VAROX 802-40 VAROX 802-CST VAROX CST: Controlled Speed Technology Scorch time - Possibility of increasing mixing speed as a 12C temperature increase does not affect process safety + 12C Slide 21 802-CST is 20% faster than 802-40 / 802-40-SP whatever the curing temperature VAROX CST: Controlled Speed Technology Cure time VAROX 802-40-SP VAROX 802-CST VAROX 802-40 Slide 22 VAROX CST: Controlled Speed Technology iso-M H comparison 30% faster than TAC & 17% faster than TRIM Scorch @ 125C: X 2.5 vs. TAC X 3.5 vs. TRIM & HVA-2 32:33 14:02 9:24 9:34 6:28 4:06 4:33 12:48 HVA is a registered trademark of DuPont Dow Elastomers Slide 23 Comparable mechanical performances VAROX CST: Controlled Speed Technology Slide 24 VAROX 802-CSTVAROX 802- 40 +TAC VAROX 802- 40 +TMPTMA VAROX 802- 40 +HVA 2 XL density ---- Cure time +++0+ Scorch time ++++-- Tensile strength ++ Elongation at break ++ Compression Set ++ VAROX 802-CST can replace peroxide + coagent Slide 25 Possibility to get faster compounding by increasing mixing speed with no scorch threat (temperature can be increased with no scorch threat) Possibility to go from 2 step mixing to 1 step mixing (cost saving) Possibility to get a faster curing process by increasing temperature with no scorch threat (injection, transfer and compression) Solve scorch problems (for sensitive compounds or scorchy EPDM i.e. ENB vs. DCP) Less downtime devoted to equipment cleanup (extruder, etc.) Reduced rejects Possibility to reduce the amount of antioxidant in the rubber formulation + Faster curing extra gain in productivity SP + Faster Curing = CST With such scorch resistance + cure speed: SP Slide 26 TWO NEW GRADES OF VAROX SP (VAROX 802-40MB-SP) Much better scorch resistance Masterbatch Commercially available CONCLUSIONS CST (VAROX 802-40-CST) Faster cure Increased scorch resistance Powder & Granules Available for sampling in 2Q04 Commercially available in 3Q04 Slide 27 Before using, read, understand and comply with the information and precautions in the Material Safety Data Sheets, label and other product literature. The information presented herein, while not guaranteed, was prepared by technical personnel and, to the best of our knowledge and belief, is true and accurate as of the date hereof. No warranty, representation or guarantee, express or implied, is made regarding accuracy, performance, stability, reliability or use. This information is not intended to be all-inclusive, because the manner and conditions of use, handling, storage and other factors may involve other or additional safety or performance considerations. The user is responsible for determining the suitability of any material for a specific purpose and for adopting such safety precautions as may be required. R. T. Vanderbilt Company does not warrant the results to be obtained in using any material, and disclaims all liability with respect to the use, handling or further processing of any such material. No suggestion for use is intended as, and nothing herein shall be construed as, a recommendation to infringe any existing patent or to violate any federal, state or local law or regulation.