Dithiocarbamate functionalized dendrimer with alkylenediamine core as soil heavy metal immobilization amendment and preparation method thereof

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United States of America Patent

PATENT NO 9656311
SERIAL NO

14737495

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A dithiocarbamate functionalized dendrimer with an alkylenediamine core, a dithiocarbamate pendant functional group and a dithiocarbamate end functional group, as a soil heavy metal immobilization amendment, and a preparation method thereof are provided. The dithiocarbamate functionalized dendrimer has a chemical formula of (CH2)a{N[CH2CH2COOCH2C(C2H5)(CH2OCOCH2CH2N(CSSM)CH2(CH2)bCH2N(CSS M)2)2]2}2, wherein a is a positive integer larger than 2; b is a positive integer at a range of 0-4; and M is Na+, NH4+ or K+. The dithiocarbamate functionalized dendrimer with the alkylenediamine core is used for an in-suit immobilization remediation for soil contaminated by heavy metals, and has advantages of a small dosage, high efficiency, safety and rapidness. The dendrimer is able to effectively immobilize exchangeable and carbonated bound forms of the heavy metals, in such a manner that the immobilized heavy metals are able to resist an influence from natural environment for a long term, such as an acid rain.

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Patent Owner(s)

Patent OwnerAddress
TONGJI UNIVERSITY200092 SIPING ROAD 1239 SHANGHAI YANGPU DISTRICT SHANGHAI CITY SHANGHAI CITY 200092

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Li, Fengting Shanghai, CN 18 6
Tian, Haiyan Shanghai, CN 3 8
Zhang, Bingru Shanghai, CN 10 6
Zhao, Huangpu Shanghai, CN 1 1
Zhou, Weixiao Shanghai, CN 1 1

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