Polyaspartic acid/diethylenetriamine grafted copolymer and synthetic method thereof

The invention relates to a polyaspartic acid/diethylenetriamine grafted copolymer and a synthetic method thereof. The synthetic method comprises the following steps: firstly, performing the polycondensation reaction on raw materials of maleic anhydride and urea to obtain dry polysuccinimide (PSI); t...

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Bibliographische Detailangaben
Hauptverfasser:	WU YUFENG, ZHANG LEI, XU YING, CHENG YAMIN, SHAN HUITING, XU SUYI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	The invention relates to a polyaspartic acid/diethylenetriamine grafted copolymer and a synthetic method thereof. The synthetic method comprises the following steps: firstly, performing the polycondensation reaction on raw materials of maleic anhydride and urea to obtain dry polysuccinimide (PSI); then slowly adding the prepared polysuccinimide into a mixed solution of diethylenetriamine and water to perform the grafting reaction; after the reaction is completed, regulating a pH value to be a neutral value, slowly dropping reaction liquid into ethyl alcohol of a certain volume to obtain red brown viscous precipitates, performing standing, pouring out supernate, washing the precipitates for 2 to 3 times and carrying out vacuum drying for 24 h to obtain polyaspartic acid/diethylenetriamine grafted copolymer (PASP/DETA). The polyaspartic acid/diethylenetriamine grafted copolymer disclosed by the invention is green and efficient, and degradable, solves the problems of secondary pollution, eutrophication and the l