Preparation method of cationic polymerization bifunctional initiator and telechelic polyisobutene

Abstract

The invention discloses a preparation method of a novel cationic polymerization bifunctional initiator. The initiator is produced to a kilo grade scale meeting industrial production from a laboratory gram-grade scale, so that the synthetic cost of the initiator is greatly lowered. By developing a series of novel initiator derivatives, the brand new initiator which is higher in initiating efficiency, lower in energy consumption and higher in production efficiency are found, and telechelic polyisobutene, the functional groups (hydroxyl, double bonds or chlorine group) of which are fully terminated and the molecular structure of which is controllable, can be synthesized.

Description

Technical field [0001] The invention belongs to the technical field of polymer material preparation, and particularly relates to a series of preparation methods of a series of novel isobutylene cationic polymerization bifunctional initiators, and the application in the synthesis of high end-capping selectivity polyisobutylene. Background technique [0002] Telechelic type polyisobutene is a very useful macromonomer and synthetic intermediate. It can be used to prepare rocket propellant due to the thermal stability, air tightness, hydrophobicity and impermeability brought by its saturated carbon chain structure. The adhesive can also react with diisocyanate to generate polyisobutylene-based polyurethane for use in the biomedical field. The synthesis methods of telechelic polyisobutylene are mainly divided into two categories: one is polymer degradation, that is, butyl rubber is degraded by ozonization, and then reduced with aluminum hydride files or other reducing agents to obtain...

AI Technical Summary

Problems solved by technology

[0004] The literature (Macromolecules 2006,39,6861-6870) reported that 1,3-butadiene was used as an end-capping agent to synthesize a struc

Images