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Title:
POLYAMINO SURFACTANT, PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2021/047139
Kind Code:
A1
Abstract:
Disclosed in the present invention are a polyamino surfactant, a preparation method therefor and use thereof. The surfactant is prepared by the following steps: first, using a phthalic anhydride to react with a primary amine to generate a phthalimide, so as to protect the primary amine; then using a bromoalkane to react with a secondary amine to bind a long-chain alkyl with an amino; finally, under the alkaline condition, removing calcium phthalate in a precipitation manner using the insoluble characteristic of calcium salts, and then removing a solvent to obtain a target product, the obtained product being a polyamino surfactant. The surfactant increases the amount of the amino so as to improve the water solubility of the surfactant, and meanwhile, retains the adsorption effect of the amino to negative charges on the surface of bacteria and the destructive effect of the long-chain alkyl on cell membranes. The surfactant is applied to the treatment of oil-bearing wastewater bacteria in oil fields, and has a significant effect.

Inventors:
WANG XINWEI (CN)
WU JIANPING (CN)
LI QINGSHAN (CN)
SHI XUSHENG (CN)
PAN XIAOCHU (CN)
DONG ZHUYONG (CN)
LIU YUEHUA (CN)
LIN FANGYAN (CN)
Application Number:
PCT/CN2020/072886
Publication Date:
March 18, 2021
Filing Date:
January 18, 2020
Export Citation:
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Assignee:
KENTE CATALYSTS INC (CN)
JIANGXI KENTE CHEMISTRY CO LTD (CN)
International Classes:
C07C209/00; A01N33/02; A01P1/00; C02F1/50; C07C209/68; C07C211/14; C07D209/48; C09K23/16
Foreign References:
CN110483305A2019-11-22
CN110479182A2019-11-22
CN103012176A2013-04-03
CN104311431A2015-01-28
Other References:
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GERD SCHERER , HANS-HEINRICH LIMBACH: "Dynamic NMR Study of the Tautomerism of Bicyclic Oxalamidines: Kinetic HH/HD/DD Isotope and Solvent Effects", JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 116, no. 4, 1 February 1994 (1994-02-01), pages 1230 - 1239, XP055792042, ISSN: 0002-7863, DOI: 10.1021/ja00083a009
MARINA PERIAME , JEAN‐MARIE PAGES , ANNE DAVIN‐REGLI: "Enterobacter Gergoviae Membrane Modifications are Involved in the Adaptive Response to Preservatives Used in Cosmetic Industry", JOURNAL OF APPLIED MICROBIOLOGY, vol. 118, no. 1, 30 October 2014 (2014-10-30), pages 49 - 61, XP055792045, ISSN: 1364-5072, DOI: 10.1111/jam.12676
Attorney, Agent or Firm:
SHAOXING CITY ZHIHENG PATENT AGENCY OFFICE (GENERAL PARTNERSHIP) (CN)
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