transformation method for the synthesis of polyurethane , a method for reuse of the modified polyurethane and using the same number of sewage treatment .

摘要

The present invention is 2,4- toluene diimide Sociedad Annette ; And the alcohol group and the carboxyl group method of synthesizing a modified polyurethane carboxy functional group introduced therein , comprising the step of reacting the acid that contains , to a modified method of the polyurethane and reuse of wastewater to be treated using this synthesis through which in accordance with the ; this invention , carboxyl functional groups may provide a novel method for the synthesis of polyurethane introduced , modified polyurethane synthesized through which the inorganic coagulant is injected to the reuse of wastewater treatment can the residual water that may be used to remove multivalent cations adsorbed bar , as well as to prevent external discharges in the polyvalent cation , can be reused a number of wastewater treatment efficiently .