NIPOL® IR Polyisoprene Elastomer ZEON CHEMICALS L.P. Distributed by Vanderbilt Chemicals, LLC

Comparison of NIPOL ® IR and Natsyn® Polyisoprene Property NIPOL® IR 2200 NIPOL IR 2200L NIPOL IR 2200N Natsyn® 2200 Natsyn® 2205 Natsyn® 2210 CAS # 9003-31-0 Mooney ML4 @ 100°C 75-90 65-80 70-90 50-70 Heat loss, % max. 0.7 1.0 Not reported Volatile matter, % - 0.5 Ash, % max. 0.6 Extractables, % <3.0 Tg, °C -75 Cis-1,4 content, % 98.0 ~99.0 98.5 Specific Gravity 0.91 FDA Compliant* Yes Package size, kg 35.0 17.5 34.0 Package size, lb) 77.1 38.6 75.0 Shelf life 3 years 18 months NIPOL ® IR2200 = Standard grade for Tires and Industrial Products NIPOL IR2200L = Low Mooney Viscosity Grade NIPOL IR2200N = BHT-free type (antioxidant free) * All grades of NIPOL IR synthetic rubber comply with applicable portions of the following FDA regulations: 21CFR 175.105 Adhesives 21CFR 175.125 Pressure Sensitive Adhesives 21CFR 176.180 Components of Paper and Paperboard in contact with dry food. 21CFR 177.2600 Rubber articles intended for repeated use.

NIPOL® IR vs. Natsyn® in a Furnace Black Loaded Compound Three NIPOL IR polymers of different viscosities were compared to Natsyn 2200 in a carbon black-loaded compound. The viscosities of the NIPOL IR polymers were slightly higher, while scorch and cure times for the NIPOL IR compounds were markedly slower, than those of Natsyn 2200. Press cures equated to tc 90 indicate that NIPOL IR 2200 has higher modulus and tensile strength. All three NIPOL IR polymers exhibited improved tear strength, compression set resistance and resistance to flex-crack growth. COMPOUNDS Ingredients 1 2 3 4 Natsyn® 2200 100.0 ─ NIPOL® IR 2200 NIPOL IR 2200L NIPOL IR 2200N Zinc Oxide 3.0 Stearic Acid 2.0 AGERITE® STALITE® Antioxidant 1.0 N330 Carbon Black 40.0 Calight RPO Plasticizer 5.0 AMAX® Accelerator Sulfur Totals 154.0 AMAX and AGERITE are registered trademarks of R.T. Vanderbilt Holding Company, Inc. and/or its respective wholly owned subsidiaries. NIPOL is a registered trademark of Zeon Chemicals L.P. Natsyn is a registered trademark of Goodyear Tire & Rubber Company.

ts1 (min) tc 90 (min) RHEOLOGICAL PROPERTIES MOONEY VISCOSITY, ML 1+4, ASTM D 1646, @ 100 oC (212 oF) Viscosity, mu 22.4 25.7 26.4 27.9 MOONEY SCORCH, ASTM D 1646, @ 121 C (250 F) Minimum Viscosity 15.6 16.9 17.3 18.5 Minutes to 5 pt. rise 14.9 20.0 21.0 18.6 MDR, ASTM D 5289, @ 150 C (302 F), 0.5o Arc ML, dN·m 0.88 0.93 0.99 1.01 MH, dN·m 14.60 13.41 13.17 13.30 ts1 (min) 4.68 6.17 6.68 5.57 tc 90 (min) 10.81 14.19 14.38 14.08 Cure Rate Index, min-1 16.3 12.5 13.0 11.8 Cure Rate, dN·m/min 2.24 1.56 1.58 1.44

Press Cured tc 90 + 2 Minutes @ 150 oC (302 oF) ORIGINAL PHYSICALS Press Cured tc 90 + 2 Minutes @ 150 oC (302 oF) Hardness, Shore A 51.6 50.3 49.2 50.1 300% Modulus, MPa 9.65 10.71 9.46 9.95 Tensile, MPa 31.15 32.19 30.07 32.34 Elongation, % 600 591 579 597 Tear, Die C, kN/m 68.7 87.7 71.2 74.4 COMPRESSION SET, METHOD B, Press Cured tc 90 + 12.5 minutes @ 150 C 22 hrs. @ 70 oC, % 19.0 17.3 17.1 17.5 RETAINED PHYICAL PROPERTIES, After Aging in Air, 70 HOURS @ 100 oC (212 oF) Hardness, Pts. Change +9.9 +8.2 +8.6 +7.9 Tensile, % 63.1 51.7 61.8 59.8 Elongation, % 56.2 50.8 60.8 59.0 Tear Strength, % 48.8 38.0 45.9 41.5 FLEX-CRACK GROWTH, ASTM D 813, DE MATTIA FLEX MACHINE Press Cured tc 90 + 6.4 minutes @ 150 oC Crack Growth, mm/kilocycle 0.188 0.152 0.170 0.161 Range, kilocycles 34 – 115 34 – 126 34 – 145 DUPONT SPIDER FLOW MOLD, 20 psi, 3/8″ORIFICE, 30.0 GRAM CHARGE Weight of Spider, grams 18.2 18.0 18.1 17.8

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