The reaction between -NCO and water, dispersion of polyisocyanates in polyols, and completediffusion among different kinds of molecules are key problems to be solved in 2k-WPU.
Diffusion aided by hexamethyldisiloxane is used, whereby complete separation can be achieved in a few hours at room temperature.
利用六亚甲基二硅氧烷扩散分离，在室温下几小时内就能达到完全分离。
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Accessories with complete expertise: PC cover including transparent, transparent stripe, diffusion, diffusion stripe, inside the clasp, outside buckle.