[...]... E-20 45 45 48 48 64 48 Robert C Klingender /Handbook of Specialty Elastomers DK4127_C001 Final Proof page 13 22.10.2007 3:34pm Compositor Name: BMani Polychloroprene Rubber 13 Robert C Klingender /Handbook of Specialty Elastomers DK4127_C001 Final Proof page 14 22.10.2007 3:34pm Compositor Name: BMani 14 Handbook of Specialty Elastomers TABLE 1.6 Selection of Compound Properties versus CR Grades Desired... Direction of arrow denotes improvement Robert C Klingender /Handbook of Specialty Elastomers DK4127_C001 Final Proof page 10 22.10.2007 3:34pm Compositor Name: BMani 10 Handbook of Specialty Elastomers Tensile strength of vulcanizate (MPa) 21.0 20.0 19.0 XD-Grade 18.0 M-Grade 17.0 30 40 50 60 70 Raw material 80 90 100 110 120 Mooney viscosity (µ) FIGURE 1.6 Tensile strength—Mooney viscosity relationship of. .. cationic-, and Ziegler Natta catalysis techniques [4] but because of the lack of useful properties, production safety, and economical considerations, free radical emulsion polymerization is Robert C Klingender /Handbook of Specialty Elastomers DK4127_C001 Final Proof page 4 22.10.2007 3:34pm Compositor Name: BMani 4 Handbook of Specialty Elastomers Acetylene process (1930) Acetylene = CH — CH Butadiene...Robert C Klingender /Handbook of Specialty Elastomers DK4127_C000 Final Proof page x 23.10.2007 7:54pm Compositor Name: TSuresh Robert C Klingender /Handbook of Specialty Elastomers DK4127_C000 Final Proof page xi 23.10.2007 7:54pm Compositor Name: TSuresh Contributors Pascal Ferrandez DuPont Performance Elastomers, LLC Wilmington, Delaware, U.S.A Hermann Meisenheimer... Klingender /Handbook of Specialty Elastomers DK4127_C001 Final Proof page 2 22.10.2007 3:34pm Compositor Name: BMani 2 Handbook of Specialty Elastomers 1.2.10.4 Extruded Profiles 34 1.2.10.5 Wire and Cable 34 1.2.10.6 Miscellaneous 36 References 36 1.1 INTRODUCTION Polychloroprene was one of the first synthetic rubbers and has played an important role in the development of. .. Robert C Klingender /Handbook of Specialty Elastomers DK4127_C001 Final Proof page 20 22.10.2007 3:34pm Compositor Name: BMani 20 Handbook of Specialty Elastomers 200 0 d /40°C 7 d /40°C 14 d /40°C ML 1 + 4/ 100°C 150 100 50 0 IPPD 6 PPD DTPD – – – – “NS” 2 – – – – 2 – – – – 2 – – – – 2 Viscosity measurement after storage of the unvulcanized compound at 40°C FIGURE 1.9 The influence of antioxidant=antiozonants... Polymers Wilmington, Delaware, U.S.A Andrea Zens Bayer Corporation Leverkusen, Germany xi Robert C Klingender /Handbook of Specialty Elastomers DK4127_C000 Final Proof page xii 23.10.2007 7:54pm Compositor Name: TSuresh Robert C Klingender /Handbook of Specialty Elastomers DK4127_C001 Final Proof page 1 22.10.2007 3:34pm Compositor Name: BMani 1 Polychloroprene Rubber Rudiger Musch and Hans Magg CONTENTS... 116a 126a 130 ML 4 Slow Crystallization Types WRT-M1 38 WRT-M2 46 Grade Neoprene DuPont TABLE 1.5 Cross Reference of Polychloroprene Grades Robert C Klingender /Handbook of Specialty Elastomers DK4127_C001 Final Proof page 12 22.10.2007 3:34pm Compositor Name: BMani Handbook of Specialty Elastomers 45 45 a XD, Xanthogen disulfide modified grades 43 45 Medium Crystallization Types GNA 50 712 711 45 45 510... 12%, and a crystalline melting temperature of ca 458C A reduction in the rate of crystallization is possible Robert C Klingender /Handbook of Specialty Elastomers DK4127_C001 Final Proof page 6 22.10.2007 3:34pm Compositor Name: BMani 6 Handbook of Specialty Elastomers Isomers of polychloroprene Cl — 1 Structural isomers ~CH2— C =CH— CH2~ ( )x Cl — — — n H2C = C — CH = CH2 Cl ~CH2— C ( ~y ) 1,2 Adduct... Thompson [17] In accordance with general experience, nonstaining antioxidants from the class of stearically hindered phenols or bisphenols are less effective Robert C Klingender /Handbook of Specialty Elastomers DK4127_C001 Final Proof page 18 22.10.2007 3:34pm Compositor Name: BMani 18 Handbook of Specialty Elastomers TABLE 1.8 Typical Accelerator Systems for CR M and XD-Grades System I Dosage (phr) . x0 y0 w1 h0" alt="" Handbook of SPECIALTY ELASTOMERS Robert C. Klingender /Handbook of Specialty Elastomers DK4127_C000 Final Proof page i 23.10.2007 7:54pm. New York Handbook of SPECIALTY ELASTOMERS Edited by Robert C. Klingender Robert C. Klingender /Handbook of Specialty Elastomers DK4127_C000 Final Proof page