Continuous Reactor Modification Polymerization Initiator Preparation

The patent applies continuous flow reaction instead of batch processing, where reactants continuously flow through the reaction system maintaining steady-state conditions. This continuous action prevents side reactions by avoiding concentration fluctuations and temperature spikes that occur during batch loading and unloading, thereby achieving high conversion ratio while maintaining process simplicity through automated continuous operation.

The patent uses a composite initiator system combining hexamethylene lithium with specific additives or modifiers that enhance solubility while maintaining polymerization initiation capability. The composite structure allows the initiator to remain dissolved in the reaction medium over time, preventing precipitation while retaining its function to initiate polymerization effectively.

The patent modifies the chemical structure parameters of the modification polymerization initiator by selecting specific conjugated diene compounds with appropriate molecular weights and functional groups. This parameter optimization achieves a balance where the initiator maintains high reactivity for polymerization initiation while simultaneously improving long-term storage stability to prevent precipitation during storage.

The patent applies local quality modification by introducing specific functional groups at chain terminals through the modification polymerization initiator, while maintaining the bulk vinyl content for glass transition temperature control. This localized functionalization at terminal positions enhances wet skid resistance without altering the overall vinyl content and glass transition temperature of the SSBR, thereby resolving the contradiction between rolling resistance control and wet skid resistance.