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Preparation and application of dendritic polymer polyamide-amino octa-methylene phosphonic acid

An amine octamethylene phosphonic acid and polyamide technology, applied in the field of industrial water treatment, can solve the problems of poor calcium tolerance and poor calcium phosphate scale inhibition, and achieve strong calcium tolerance and good resistance to high calcium conditions. Effect

Active Publication Date: 2013-08-14
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The object of the present invention is to provide the preparation and application thereof of a kind of dendrimer polyamide-amine octamethylene phosphonic acid, to overcome the poor calcium tolerance of existing small molecule methylene phosphonate scale inhibitors, Weaknesses of poor inhibitory effect on calcium phosphate scale

Method used

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  • Preparation and application of dendritic polymer polyamide-amino octa-methylene phosphonic acid
  • Preparation and application of dendritic polymer polyamide-amino octa-methylene phosphonic acid
  • Preparation and application of dendritic polymer polyamide-amino octa-methylene phosphonic acid

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Experimental program
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Effect test

Embodiment 1

[0035] Embodiment 1: Preparation of hexamethylene diamine core polyamidoamine octamethylene phosphonic acid

[0036]Add 16.57 g of phosphorous acid (99.0%, 0.200 mol) and 25.69 g (37%, 0.26 mol) of concentrated hydrochloric acid into a four-neck flask equipped with a stirrer, condenser, thermometer, and dropping funnel, and stir well. Under cooling and stirring conditions, 57.20 g (25%, 0.025 mol) of 0-generation polyamidoamine (Hexaethylenediamine core, 0 generation, PAMAM dendrimer; hereinafter abbreviated as H-PAMAM (NH 2 ) 4 ) aqueous solution, control the rate of addition so that the temperature is 3 h 2 ) 8 ). 13 C NMR (D 2 O): δ 26.62; 28.93; 32.57; 37.27; 51.02; 52.16; 56.32; 57.30; 173.73. 31 P NMR (D 2 O): δ10.67.

Embodiment 2

[0037] Embodiment 2: Preparation of butanediamine core polyamidoamine octamethylene phosphonic acid

[0038] Add 16.57 g of phosphorous acid (99.0%, 0.200 mol) and 25.69 g (37%, 0.26 mol) of concentrated hydrochloric acid into a four-neck flask equipped with a stirrer, condenser, thermometer, and dropping funnel, and stir well. Under cooling and stirring conditions, 57.20 g (25%, 0.025 mol) of 0-generation polyamidoamine (Butanediamine core, 0 generation, PAMAM dendrimer; hereinafter abbreviated as B-PAMAM (NH 2 ) 4 ) aqueous solution, control the rate of addition so that the temperature is 3 h 2 ) 8 ). 13 C NMR (D 2 O): δ26.82; 32.92; 36.83; 50.44; 53.27; 56.82; 57.11; 175.54. 31 P NMR (D 2 O): δ9.82.

Embodiment 3

[0039] Embodiment 3: Preparation of ethylenediamine core polyamidoamine octamethylene phosphonic acid

[0040] Add 16.57 g of phosphorous acid (99.0%, 0.200 mol) and 25.69 g (37%, 0.26 mol) of concentrated hydrochloric acid into a four-neck flask equipped with a stirrer, condenser, thermometer, and dropping funnel, and stir well. Under the condition of cooling and stirring, 51.60 g (25%, 0.025 mol) of 0-generation polyamidoamine (Ethylenediamine core, 0 generation, PAMAM dendrimer; hereinafter abbreviated as E-PAMAM(NH 2 ) 4 ) aqueous solution, control the rate of addition so that the temperature is 3 h 2 ) 8 ). 13 C NMR (D 2 O): δ34.02; 36.41; 49.92; 50.50; 56.62; 57.18; 176.01. 31 P NMR (D 2 O): δ10.17.

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Abstract

The invention relates to preparation and an application of dendritic polymer polyamide-amine octa-methylene phosphonic acid. The dendritic polymer is obtained by performing methylene phosphorylation on the terminal amino group of 0-generation polyamide-amine. The chemical formula of the dendritic polymer is (CH2)n{N[CH2CH2CONHCH2CH2N(CH2PO3H2)2]2}2, wherein n is a positive integer of 2 to 6. The dendritic polymer has excellent CaCO3, CaSO4 and Ca3(PO4)2 scale inhibiting performance, extremely high calcium tolerance and excellent dispersing performance, can serve as a scale-inhibiting dispersing agent in industrial water treatment, is applicable to industrial water treatment of circulating cooling water, oilfield waterflooding, reverse osmosis and the like, and is particularly applicable to industrial water treatment under the high-calcium condition.

Description

technical field [0001] The invention belongs to the technical field of industrial water treatment, and specifically relates to the preparation and application of a dendritic polymer polyamide-amine octamethylene phosphonic acid, which is suitable for circulating cooling water, oil field water injection and reverse osmosis as a scale inhibitor and dispersant Industrial water treatment, especially suitable for industrial water treatment under high calcium water quality conditions. Background technique [0002] Industrial water treatment technology is a technology developed to solve environmental problems. It plays a very important role in saving water, saving energy and reducing consumption, ensuring the safe and stable operation of industrial production equipment, and solving the global problem of water resource depletion. In the field of industrial water treatment, raw water usually contains a large amount of Ca 2+ , CO 3 2- , SO 4 2- and PO 4 3- Plasma. Under certai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/38C02F5/14
CPCC02F1/441C02F5/14C02F2103/023C02F2103/08C02F2103/10Y02A20/131C02F5/04
Inventor 李风亭张冰如陈芳
Owner TONGJI UNIV
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