New Reaction for the Preparation of Liquid Rubber

摘要: The article reports on the noncatalytic transformation of a polybutadiene (number-average molecular weight = 128,000) into functionalized liquid rubber via carboxidation polymer CC bonds by nitrous oxide. reaction was conducted in benzene solution at 160–230 °C and pressure 3–6 MPa. mechanism determined. main route (95%) proceeded without cleavage led to formation ketone groups backbone. A minor (5%) with bonds, yielding two smaller fragments containing aldehyde vinyl end groups. availability could lead dramatic decrease weight, which, depending degree, be 1–2 orders magnitude less than that initial material. Thus, more 15% transformed it CO-functionalized narrow distribution. © 2006 Wiley Periodicals, Inc. J Polym Sci Part A: Chem 44: 2510–2520,