DHHB Solidification via Low Shear and Seed Crystals

The patent changes the shear rate parameter from high values to specifically less than 800 s⁻¹, combined with temperature control (cooling the melt), to achieve accelerated crystallization without excessive energy input. This parameter optimization resolves the contradiction between crystallization speed and energy consumption.

The patent introduces seed crystals as an intermediary substance to initiate and accelerate crystallization. The seed crystals act as nucleation sites that promote crystal formation without requiring high shear rates, thereby reducing energy input while maintaining high crystallization speed.

The patent optimizes the shear rate parameter to be less than 800 s⁻¹, which is sufficient to promote crystal growth but low enough to maintain uniform particle shapes and sizes. This controlled parameter change ensures both high crystallization speed and good particle uniformity.

Seed crystals serve as intermediaries that provide uniform nucleation sites throughout the melt. This ensures consistent crystal growth patterns and uniform particle morphology while maintaining high crystallization rates, without requiring high shear forces that would disrupt particle uniformity.

The patent applies preliminary action by introducing seed crystals before final crystallization occurs. This pre-initiation of nucleation sites allows the system to transition quickly from metastable liquid to solid state when cooling is applied, reducing the overall crystallization time while maintaining storage simplicity.

Seed crystals act as intermediaries that catalyze the phase transition from liquid to solid. By providing pre-formed crystal structures, they dramatically reduce the induction period and accelerate crystallization kinetics, converting the metastable liquid to solid form rapidly when needed.