Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Polyaspartic acid for water treatment scale inhibitor, as well as preparation method and application of polyaspartic acid

A technology of polyaspartic acid and scale inhibitor, which is applied in water/sludge/sewage treatment, special treatment targets, chemical instruments and methods, etc., can solve the problems of lack of structure and performance, and achieve high degree of freedom and good The effect of scale inhibition performance and fast biodegradation performance

Active Publication Date: 2016-10-12
山东玉泉食品有限公司
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, there is a lack of research on related structures and properties.

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
  • Polyaspartic acid for water treatment scale inhibitor, as well as preparation method and application of polyaspartic acid
  • Polyaspartic acid for water treatment scale inhibitor, as well as preparation method and application of polyaspartic acid
  • Polyaspartic acid for water treatment scale inhibitor, as well as preparation method and application of polyaspartic acid

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0019] Preparation of polysuccinimide

[0020] A certain amount of 1000g L-aspartic acid and 13g H 3 PO 4 Add it to liquid paraffin, heat to 200°C and react for 2 hours, separate the water produced by the reaction with a water separator, cool down to 35°C, and separate the liquid paraffin by suction filtration, wash the solid product three times with ethanol and distilled water respectively, and place at 80°C Dry in a constant temperature drying oven for 10 hours to obtain a light yellow polysuccinimide powder. After testing, the mass average molecular weight of the polysuccinimide is 6810, and it is ready for use.

preparation example 2

[0022] Preparation of polysuccinimide

[0023] A certain amount of 1000g L-aspartic acid and 15g H 3 PO 4 Add it to liquid paraffin, heat to 200°C and react for 2.5 hours, separate the water produced by the reaction with a water separator, cool down to 35°C, and separate the liquid paraffin by suction filtration, wash the solid product with ethanol and distilled water three times respectively, and place at 80°C Dry in a constant temperature drying oven for 10 hours to obtain light brown polysuccinimide powder. After testing, the mass average molecular weight of polysuccinimide is 7530, and it is ready for use.

preparation example 3

[0025] Preparation of polysuccinimide

[0026] A certain amount of 1000g L-aspartic acid and 10g H 3 PO 4 Add it to liquid paraffin, heat to 190°C and react for 3 hours, separate the water produced by the reaction with a water separator, cool down to 35°C, and separate the liquid paraffin by suction filtration, wash the solid product with ethanol and distilled water three times respectively, and place at 80°C Dry it in a constant temperature drying oven for 10 hours to obtain light yellow polysuccinimide powder. After testing, the mass average molecular weight of polysuccinimide is 7460, and it is ready for use.

[0027] In the present invention, the test of molecular weight adopts gel chromatography to carry out on Waters510 gel chromatograph, specifically: adopt differential refraction detector, polystyrene is used as standard sample, and chromatographic column adopts PlgelMIXED-B 300 * 7.5, 10 μ m, The temperature is 35°C.

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 polyaspartic acid for a water treatment scale inhibitor. The structural formula of the polyaspartic acid is shown in formula I of the description, where x / (x+y) is more than or equal to 0.50 and less than or equal to 0.8. The preparation method for the polyaspartic acid comprises the following steps: performing contact reaction on polysuccinimide and a mixed base in the presence of triethanolamine and zinc acetate, and regulating the pH of a solution to 6 to 7 by virtue of hydrochloric acid, wherein the mixed base is prepared from potassium hydroxide and tetramethyl guanidine of which the mass ratio is (1 to 3):1. The polyaspartic acid is higher in scale inhibition performance and biological degradation performance and more environmentally-friendly.

Description

technical field [0001] The invention relates to a polyaspartic acid used as a scale inhibitor for water treatment, a preparation method and application thereof. Background technique [0002] At present, the green and high efficiency of water treatment antiscalant products has become the development direction of antiscalant products. At present, organic phosphoric acid, organic polyphosphonic acid and their salts are the most widely used scale inhibitors, such as ATMP, HEDP, PBTCA, etc. However, organophosphorus scale inhibitors are likely to cause eutrophication of water bodies and cause water pollution. Polyaspartic acid (Polyaspartic acid) is a polyamino acid with a carboxylic acid side chain, which is a class of biodegradable and environmentally friendly green chemicals with good scale inhibition and dispersion properties and good biodegradability sex. The synthesis and application of polyaspartic acid have also attracted much attention today when environmental problem...

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): C02F5/12
CPCC02F5/12C02F2303/22
Inventor 陈令浩
Owner 山东玉泉食品有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com