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Oligomeric phosphino-succinic acid with macromolecular structure and preparation method of oligomeric phosphino-succinic acid

A technology of phosphinosuccinic acid and macromolecular structure, applied in the field of water treatment, can solve the problems of poor scale inhibition and corrosion resistance, and achieve the effects of not easy hydrolysis, wide pH operating range, and high active halogen resistance

Pending Publication Date: 2022-05-13
CHANGZHOU KEWEI TIANSHI ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing macromolecular organophosphorus has poor scale and corrosion resistance, so it is necessary to develop new scale inhibitor products

Method used

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  • Oligomeric phosphino-succinic acid with macromolecular structure and preparation method of oligomeric phosphino-succinic acid
  • Oligomeric phosphino-succinic acid with macromolecular structure and preparation method of oligomeric phosphino-succinic acid
  • Oligomeric phosphino-succinic acid with macromolecular structure and preparation method of oligomeric phosphino-succinic acid

Examples

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Effect test

Embodiment 1

[0025] A kind of oligophosphinosuccinic acid preparation method with macromolecular structure of the present embodiment comprises the following steps:

[0026] ①Add 50.0g of crushed maleic anhydride into a reaction flask containing a certain amount of 100g of water, stir to dissolve, then heat the reaction temperature to 80°C, and add bromide salt solution (0.1g of ammonium bromide dissolved in 1g of water) And ammonium persulfate solution (0.25g is dissolved in 1g water), reacted for 1 hour, the maleic acid aqueous solution was converted into fumaric acid solution.

[0027] ②Add the fumaric acid solution of ①, 27g of sodium hypophosphite, and 40mg of water-soluble initiator V50 into a five-neck flask equipped with a magnetic stirrer, a reflux condenser, a constant pressure dropping funnel, and a thermometer, raise the temperature to 100°C, and start 40 g of 27% hydrogen peroxide was added dropwise, the reaction temperature was controlled at 100° C., the dripping was completed...

Embodiment 2

[0033] A kind of oligophosphinosuccinic acid preparation method with macromolecular structure of the present embodiment comprises the following steps:

[0034] ①Add 53.0g of crushed maleic anhydride into a reaction flask containing a certain amount of 100g of water, stir to dissolve, then heat the reaction temperature to 60°C, and add bromide salt solution (0.13g of sodium bromide dissolved in 1g of water) And ammonium persulfate solution (0.4g is dissolved in 1g water), reacted for 1 hour, the maleic acid aqueous solution was converted into fumaric acid solution.

[0035] ②In a five-neck flask equipped with a magnetic stirrer, a reflux condenser, a constant pressure dropping funnel and a thermometer, add the fumaric acid solution of ①, 23g of sodium hypophosphite, and 60mg of a water-soluble initiator V50, raise the temperature to 100°C, and start 45 g of 27% hydrogen peroxide was added dropwise, the reaction temperature was controlled at 105° C., the drop was completed withi...

Embodiment 3

[0041] A kind of oligophosphinosuccinic acid preparation method with macromolecular structure of the present embodiment comprises the following steps:

[0042] ①Add 51.0g of crushed maleic anhydride into a reaction flask containing a certain amount of 100g of water, stir to dissolve, then heat the reaction temperature to 60°C, and add bromide salt solution (0.13g dissolved in 1g of water) and persulfuric acid Ammonium solution (0.4g was dissolved in 1g water), reacted for 1 hour, and the maleic acid aqueous solution was converted into fumaric acid solution.

[0043] ②Add the fumaric acid solution of ①, 24.5g of sodium hypophosphite, and 50mg of water-soluble initiator V50 into a five-neck flask equipped with a magnetic stirrer, a reflux condenser, a constant pressure dropping funnel, and a thermometer, and heat up to 100°C. Start to add 50g of 27% hydrogen peroxide dropwise, control the reaction temperature at 110°C, and drop it within 3 hours. In other embodiments, it can be ...

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Abstract

The invention provides oligophosphinosuccinic acid with a macromolecular structure and a preparation method thereof, and the preparation method comprises the following steps: dissolving maleic anhydride in water to prepare a maleic acid aqueous solution, heating the maleic acid aqueous solution to 60-80 DEG C, adding a bromide salt solution and an ammonium persulfate solution into the maleic acid aqueous solution, and reacting to obtain the oligophosphinosuccinic acid with the macromolecular structure. Converting the maleic acid aqueous solution into a fumaric acid solution; the preparation method comprises the following steps: adding sodium hypophosphite and a water-soluble initiator V50 into a fumaric acid solution, raising the reaction temperature to 100 DEG C, starting to dropwise add hydrogen peroxide with the concentration of 27-30%, controlling the reaction temperature to be 100-110 DEG C, and keeping the temperature for 1-2 hours at the temperature of 100-110 DEG C after dropwise adding, so as to prepare the oligomeric phosphino-succinic acid with the macromolecular structure. The compound has higher active halogen resistance and higher calcium hardness tolerance; the corrosion resistance exceeds that of HEDP, PBTCA and ATMP, and the phosphorus content is lower than that of other organic phosphorus products.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to an oligomer phosphinosuccinic acid with a macromolecular structure and a preparation method thereof. Background technique [0002] Organic phosphonates are a relatively large class of products in water stabilizers, because these products generally have multiple functions of corrosion inhibition, scale inhibition, and dispersion. The number of products is not only large, but also has a wide range of applications, so the output is low There are quite a lot. At present, the organic phosphine produced in my country not only meets domestic needs, but also is exported to all parts of the world. [0003] The development of organic phosphonates also has a process. From the widespread use of HEDP and ATMP products in the 1960s to 1970s, PBTCA and HPAA products appeared in the late 1970s and 1980s, and their performance has been continuously improved. Now there are large Molecular ...

Claims

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Application Information

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IPC IPC(8): C08F122/02C07F9/38C02F5/14
CPCC08F122/02C07F9/3808C02F5/14C02F2303/08
Inventor 管敏锋侯群锋邓晓虎
Owner CHANGZHOU KEWEI TIANSHI ENVIRONMENTAL TECH
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