Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of polyepoxysuccinic acid derivative

A technology of polyepoxysuccinic acid and epoxysuccinic acid, which is applied in the field of fine chemicals and can solve the problems of single functional group and single performance

Pending Publication Date: 2021-03-26
SHANDONG TAIHE WATER TREATMENT TECH CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem of single functional group and single performance of polyepoxysuccinic acid existing in the prior art, the present invention provides a preparation method of polyepoxysuccinic acid derivatives

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of polyepoxysuccinic acid derivative
  • Preparation method of polyepoxysuccinic acid derivative

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1: Mix 13.3g of methyl 3-hydroxy-2-(hydroxyimino)propionate, 132g of epoxysuccinic acid and 40g of sodium hydroxide to obtain a monomer mixture, and transfer it to a solid feeding device that has replaced the air with nitrogen middle.

[0023] Step 2: Add 186g of ethylene glycol and 4g of potassium hydroxide to the reaction kettle, stir and heat up to 112±2°C for 1h, cool down to 75±5°C, distill water at -0.1MPa for 1.2h, then turn off the negative pressure, Add 19g of 18-crown-6, and replace the air in the system with nitrogen for 20 minutes.

[0024] Step 3: Turn on the stirring, continue to heat up the temperature in the reactor to 102±2°C, add 5g of monomer mixture at an interval of 5min, and finish adding after 3.1h, continue to keep warm for 7h, add 50g of water, and add the mass fraction dropwise 20% sodium hydroxide is hydrolyzed, and the pH of the system is adjusted to 9~11 by the rate of sodium hydroxide addition. After hydrolysis for 2 hours, it is filt...

Embodiment 2

[0027] Step 1: Mix 26.6g of methyl 3-hydroxy-2-(hydroxyimino)propionate, 132g of epoxysuccinic acid and 60g of sodium hydroxide to obtain a monomer mixture, and transfer it to a solid feeding device that has replaced the air with nitrogen middle.

[0028] Step 2: Add 310g of ethylene glycol and 6.6g of potassium hydroxide to the reactor, stir and heat up to 118±2°C for 1h, then cool down to 75±5°C, distill water at -0.08MPa for 1.2h, then turn off the negative pressure , add 31g of 18-crown-6, replace the air in the system with nitrogen for 20min.

[0029] Step 3: Turn on the stirring, continue to heat up the temperature in the reactor to 108±2°C, add 5g of monomer mixture at an interval of 5 minutes, and complete the injection after 3.72 hours. After continuing to keep warm for 9 hours, add 50g of water and drop the mass fraction Hydrolyze with 20% sodium hydroxide, adjust the pH of the system at 9~11 by the rate of sodium hydroxide addition, filter after hydrolysis for 2 ho...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of a polyepoxysuccinic acid derivative, which comprises the following steps: by using epoxysuccinic acid and 3-hydroxy-2-(hydroxyimino) methyl propionate as monomers, carrying out anionic polymerization to generate a copolymer which does not contain sulfur or phosphorus, has biodegradability and is green and environment-friendly; the polyepoxysuccinic acid derivative increases the content of carboxyl in unit mass, hydroxyl is introduced, the unit content of an adsorption center is increased, and under the synergistic effect of different groups, thescale and corrosion inhibition performance of the polyepoxysuccinic acid derivative is effectively improved.

Description

technical field [0001] The patent of the present invention relates to the technical field of fine chemicals, in particular to a preparation method of polyepoxysuccinic acid derivatives. Background technique [0002] Polyepoxysuccinic acid is a green water treatment agent with dual functions of corrosion inhibition and scale inhibition. Due to its phosphorus-free and non-nitrogen structure characteristics, it will not cause eutrophication of water bodies and can be degraded by natural microorganisms. An environmentally friendly multi-component scale and corrosion inhibitor and non-phosphorus complexing agent in detergents with wide application prospects. [0003] As a scale inhibitor, polyepoxysuccinic acid will not fail due to the formation of scale inhibitor-calcium compounds like traditional scale inhibitors under the conditions of high hardness, high alkalinity and high pH. When polyepoxysuccinic acid is used as a scale inhibitor in water treatment, it can reduce the amo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08G65/28
CPCC08G65/2624C08G65/2609C08G65/2648
Inventor 程终发周响
Owner SHANDONG TAIHE WATER TREATMENT TECH CO LTD