Dimethyl itaconate sulfonate multi-copolymer scale inhibitor and preparation method thereof

A technology of dimethyl itaconate sulfonate and dimethyl itaconate, which is applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc., can solve the problem of single and inorganic Large addition amount, poor anti-scaling effect and other problems, to achieve the effect of simple production process, less residual monomer and good dispersion effect

Inactive Publication Date: 2011-10-12
山东省特种设备检验研究院淄博分院
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of inorganics is large, and the scale inhibition effect is poor; the functional groups of polycarboxylates and organic phosphines are relatively simple; the addition of multi-component copolymers has the advantages of less addition, superior performance, and high temperature resistance.

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
  • Dimethyl itaconate sulfonate multi-copolymer scale inhibitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In a four-neck flask equipped with a mechanical stirrer, a constant pressure dropping funnel, and a thermometer, add 130 g of itaconic acid, 72 g of isopropanol, and 400 g of distilled water, and heat to 60 ° C to completely dissolve the itaconic acid; Dissolve 18g of sodium in 50g of distilled water, add it quickly after itaconic acid dissolves; then heat up to 90°C; dissolve 18g of sodium propylene sulfonate in 55g of distilled water, add 100g of distilled water and 15g of sodium persulfate to prepare the initiator; Add 27g of sodium hypophosphite and 15g of dimethyl itaconate to 100g of distilled water to prepare a reducing agent; Evenly drop into the beaker within 2 hours, maintain the reaction temperature at 90 ° C, after the monomer and initiator are added dropwise, continue to keep warm (insulated for 20 minutes) and react for a period of time (hereinafter referred to as "reaction time"). Stop heating, stirring, distill, recover isopropanol, control the temperatu...

Embodiment 2

[0037]In a four-necked flask equipped with a mechanical stirrer, a constant pressure dropping funnel, and a thermometer, add 150 g of itaconic acid, 72 g of isopropanol, and 400 g of distilled water, and heat to 60 ° C to completely dissolve the itaconic acid; Dissolve 8g of sodium in 50g of distilled water, add it quickly after itaconic acid dissolves; then heat up to 90°C; dissolve 8g of sodium propylene sulfonate in 55g of distilled water, add 100g of distilled water and then 8g of sodium persulfate to prepare the initiator; Add 8g of sodium hypophosphite and 8g of dimethyl itaconate to 100g of distilled water to prepare a reducing agent; Evenly drop into the beaker within 2 hours, maintain the reaction temperature at 90 ° C, after the monomer and initiator are added dropwise, continue to keep warm (insulated for 20 minutes) and react for a period of time (hereinafter referred to as "reaction time"). Stop heating, stirring, distill, recover isopropanol, control the temperat...

Embodiment 3

[0041] In a four-necked flask equipped with a mechanical stirrer, a constant pressure dropping funnel, and a thermometer, add 120 g of itaconic acid, 72 g of isopropanol, and 400 g of distilled water, and heat to 60 ° C to completely dissolve the itaconic acid; Sodium 30g is dissolved in 80g distilled water, after itaconic acid dissolves, add quickly; then heat up to 90°C; dissolve 30g sodium propylene sulfonate in 100g distilled water, add 100g distilled water and then add 18g sodium persulfate to prepare the initiator; Add 36g of sodium hypophosphite and 24g of dimethyl itaconate to 100g of distilled water to prepare a reducing agent; Evenly drop into the beaker within 2 hours, maintain the reaction temperature at 90 ° C, after the monomer and initiator are added dropwise, continue to keep warm (insulated for 20 minutes) and react for a period of time (hereinafter referred to as "reaction time"). Stop heating, stirring, distill, recover isopropanol, control the temperature a...

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

PropertyMeasurementUnit
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to view more

Abstract

The invention relates to a dimethyl itaconate sulfonate multi-copolymer scale inhibitor and a preparation method thereof, which belong to the technical field of chemical industry. The scale inhibitor is prepared by performing aqueous polymerization on dimethyl itaconate, itaconic acid and sulfonate under an initiator system. Based on the mass of the itaconic acid, the adding amount of the sulfonate is between 10 and 50 percent, the adding amount of the dimethyl itaconate is between 5 and 100 percent, the initiator content is between 5 and 30 percent and sodium hypophosphite is between 5 and 30 percent. The itaconic acid serving as a raw material undergoes aqueous solution free radical polymerization with the dimethyl itaconate and the sulfonate in the presence of the initiator, so that production process is simple, the product has a small quantity of residual monomers and three wastes are not discharged. The polymer prepared by the method has efficient inhibitory action on the formation and attachment of fouling layers such as carbonate, sulphate, phosphate, silicate and the like in a cooling water system and plays a good role in dispersing iron oxide, sludge and the like.

Description

technical field [0001] The invention relates to a multi-component scale and corrosion inhibitor and a preparation method thereof, belonging to the technical field of chemical industry. Background technique [0002] In recent years, with the rapid development of my country's economy, the scarcity and pollution of water resources have become one of the important factors affecting my country's economic development. At present, more than 300 large and medium-sized cities are short of water, and one-third of them are seriously short of water, especially the developed cities such as the eastern coastal cities. In many places, groundwater resources are exhausted and guest water resources are limited. Therefore, saving water, treating sewage and developing new water sources are equally important. Water is a commonly used cooling medium in industrial heat exchange systems. The consumption of industrial circulating cooling water accounts for about 70% of industrial water consumption....

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
Patent Type & Authority Patents(China)
IPC IPC(8): C08F222/02C02F5/10
CPCC08F2/10C08F222/02
Inventor 刘秀华张文辉刘建文王磊
Owner 山东省特种设备检验研究院淄博分院
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap