carboxy-

Kinetic study of thermo-oxidative degradation for two PET samples are carried out by three methods, i.e. intrinsic viscosity degreasing, carboxy end group increasing and thermal weight loss.

用测定样品的特性粘度降低、端羧基含量增加和热氧化失重三种方法对不同催化体系合成的两种PET样品进行了热氧化降解的动力学研究。

ⅰ was oxidized by sodium hypobromite at 40-50 ℃ for 2 h to from 4 carboxy p terphenyl ( mp. 315-316 ℃) in 78% yield.

在40～50℃，4乙酰基对三联苯经次溴酸钠氧化反应2h，得到4羧基对三联苯，收率为78%，熔点315～316℃。

Based on this character, a replication adenovirus vector was generated. And the fiber 1 carboxy-terminal knob-s was expressed in E.

本试验就是利用这一特性构建了复制型重组CELO病毒载体，另外根据fiber1的C端抗体结合区Knob-s区进行了原核表达。