Title:
HYDROPHOBICALLY MODIFIED CATIONIC STARCH FLOCCULANTS, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/233094
Kind Code:
A1
Abstract:
The present invention provides hydrophobically modified cationic starch flocculants, a preparation method therefor and an application thereof, and mainly employs a method for graft copolymerization so as to synthesize a series of hydrophobically modified cationic starch flocculants having different degrees of hydrophobicity. In terms of molecular structure, the method not only can increase the molecular weights of the flocculants and the number of cationic functional groups on a branched chain and enhance the effects of electrical neutralization and bonding bridging, but can also introduce a large number of hydrophobic alkane chains and improve floc and mudcake properties by means of hydrophobic association. By means of a synergistic effect of the electric neutralization, bonding bridging and hydrophobic association, sludge disposal performance is effectively improved. The hydrophobically modified cationic starch flocculants of the present invention have the advantages of a simple preparation method, short synthesis time, high yield, having wide source of raw materials, low costs and the like, and provide new ideas and useful references for the development and design of green, environmentally friendly, low-cost and high-performance natural polymer flocculants.
Inventors:
YANG HU (CN)
HU PAN (CN)
HU PAN (CN)
Application Number:
PCT/CN2021/108551
Publication Date:
November 10, 2022
Filing Date:
July 27, 2021
Export Citation:
Assignee:
NANJING UNIVERSITY OF TECHNOLOGY (CN)
International Classes:
C08F251/00; C02F1/56; C02F11/147; C08B31/12; C08F220/34; C08F220/56
Foreign References:
| CN113185640A | 2021-07-30 | |||
| CN110282856A | 2019-09-27 | |||
| CN107814890A | 2018-03-20 | |||
| CN107474188A | 2017-12-15 | |||
| CN104356301A | 2015-02-18 | |||
| CN101550220A | 2009-10-07 | |||
| KR20130052141A | 2013-05-22 |
Attorney, Agent or Firm:
NANJING ZHISHI LAW FIRM OF INTELLECTUAL PROPERTY (CN)
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