The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 2017
Filed:
Jun. 12, 2015
Tongji University, Shanghai, CN;
Bingru Zhang, Shanghai, CN;
Fengting Li, Shanghai, CN;
Huangpu Zhao, Shanghai, CN;
Weixiao Zhou, Shanghai, CN;
Haiyan Tian, Shanghai, CN;
Tongji University, Shanghai, CN;
Abstract
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 (CH){N[CHCHCOOCHC(CH)(CHOCOCHCHN(CSSM)CH(CH)CHN(CSS M))]}, wherein a is a positive integer larger than 2; b is a positive integer at a range of 0-4; and M is Na, NHor 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.