TPE LC670 TPE LC670

TPE LC670

TPEEPreparation of nylon 66 salt

Nylon 66 salt are prepared respectively the temperature ethanol ethanol solution with adipic acid hexanediamine at 60 DEG C above the mixing and salt precipitation, filtering, alcohol washing, drying, and finally preparing aqueous solution of 63%, use for polycondensation. The reaction formula is as follows:

polycondensation

The polycondensation of nylon 66 salt should be carried out at high temperature, with the removal of water, resulting in the formation of linear high molecular weight nylon 66. The reaction formula is as follows:

The production process is divided i* two kinds: intermittent method and continuou*ethod. Continuou*ethod is suitable for large-scale production, and the production of nylon 66 in the world mainly adopts continuou*ethod. The batch method is used only in two cases: one is to produce special or experimental grade; two is in a *all device with a production capacity of 4 500t A.。

j*ascript:;

Physical property table