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

A kind of method of catalytic hydrolysis polysuccinimide

A technology of polysuccinimide and catalytic hydrolysis, which is applied in the field of catalytic hydrolysis of polysuccinimide and the production of polyaminosuccinate, which can solve the problems of low active ingredient content, difficult separation of impurities, long production cycle, etc. problems, to achieve the effects of reduced labor power costs, good water solubility, and high material utilization

Active Publication Date: 2016-10-19
河北协同化学有限公司
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The technical problem to be solved in the present invention is to provide a method for catalytically hydrolyzing polysuccinimide to produce polyaminosuccinate, so as to solve the problems of excessively long production cycle, low content of active ingredients in the product, and Problems such as difficult separation of impurities

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
  • A kind of method of catalytic hydrolysis polysuccinimide
  • A kind of method of catalytic hydrolysis polysuccinimide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043]This example prepares zinc polyaminosuccinate, using polysuccinimide with a degree of polymerization of 45-65 and a weight-average molecular weight of 4500-6500 as the main raw material, zinc oxide as the salt-forming agent, and a concentration of 25%. ammonia water as a catalyst.

[0044] This embodiment reacts according to the following mass ratio feeding, wherein the mass ratio of polysuccinimide to water is 1:3.0, the mass ratio of polysuccinimide to salt-forming agent is 1:0.3, polysuccinimide The mass ratio of succinimide to catalyst is 1:0.2. Specifically: the quality of polysuccinimide is 100g, the quality of water is 300g (measure 300ml), the quality of salt-forming agent zinc oxide is 30g, and the quality of catalyst ammonia water is 20g.

[0045] The specific steps are: 1) Add 300ml of water to a 1L glass flask, start stirring, add 100g of polysuccinimide and 30g of zinc oxide to the glass flask at one time, stir for about 15min, and make each material in the...

Embodiment 2

[0048] This example prepares calcium polyaminosuccinate, using polysuccinimide with a degree of polymerization of 45-65 and a weight-average molecular weight of 4500-6500 as the main raw material, calcium hydroxide as a salt-forming agent, and a concentration of 20 % ammonia water as catalyst.

[0049] The present embodiment reacts according to the following mass ratio feeding, wherein the mass ratio of polysuccinimide to water is 1:2.86, the mass ratio of polysuccinimide to salt-forming agent is 1:0.31, polysuccinimide The mass ratio of succinimide to catalyst is 1:0.085. Specifically: the quality of polysuccinimide is 235g, the quality of water is 672g (672ml is measured), the quality of salt-forming agent calcium hydroxide is 73g, and the quality of catalyst ammonia water is 20g.

[0050] The specific steps are: 1) in a 1L glass flask, add 672ml of water, start stirring, add 235g of polysuccinimide and 73g of calcium hydroxide to the glass flask at one time, stir for about...

Embodiment 3

[0053] This example prepares magnesium polyaminosuccinate, using polysuccinimide with a degree of polymerization of 30-70 and a weight-average molecular weight of 3000-7000 as the main raw material, magnesium hydroxide as a salt-forming agent, and a concentration of 22 % ammonia water as catalyst.

[0054] The present embodiment reacts according to the following mass ratio feeding, wherein the mass ratio of polysuccinimide to water is 1:3.675, the mass ratio of polysuccinimide to salt-forming agent is 1:0.18, polysuccinimide The mass ratio of succinimide to catalyst is 1:0.15. Specifically: the quality of polysuccinimide is 200g, the quality of water is 735g (measure 735ml), the quality of salt-forming agent zinc oxide is 36g, and the quality of catalyst ammonia water is 30g.

[0055] The specific steps are: 1) Add 735ml of water to a 1L glass flask, start stirring, add 200g of polysuccinimide and 36g of magnesium oxide to the glass flask at one time, stir for about 15min, an...

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
degree of polymerizationaaaaaaaaaa
degree of polymerizationaaaaaaaaaa
degree of polymerizationaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for carrying out catalytic hydrolysis on poly-succinimide. The method comprises the following two steps: (1) adding solid powder of the poly-succinimide and a solid salt-forming agent into water, and evenly stirring to obtain mixed liquid; (2) adding a catalyst into the mixed liquid, and carrying out a hydrolysis reaction under certain conditions. After the method is adopted, the speed of the hydrolysis reaction and the material conversion rate can be obviously improved, high-quality products can be obtained, and the demands of multiple application fields are met.

Description

technical field [0001] The invention relates to the field of preparation of organic polymer compounds, in particular to a method for catalytically hydrolyzing polysuccinimide for producing polyaminosuccinate. Background technique [0002] Polyaminosuccinic acid is a kind of polymerized amino acid, which has a linear polyamide structure. The molecular chain structure of polyaminosuccinic acid is shown in formula Ⅰ. The molecular chain has α type (the number of structural units is n) and β type (structure The structural unit with the number of units m) is easily degraded into CO by microorganisms and bacteria because of the peptide bond in its molecular chain. 2 and H 2 O, so it has good biocompatibility, and has the properties of scale inhibition, corrosion inhibition, chelation, adsorption, dispersion and moisture retention. [0003] [0004] m≥n, M is H + 、Na + 、K + , Wait. [0005] Polysuccinimide is the precursor for producing polyaminosuccinic acid, and the mo...

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): C08G73/10C08G69/00
CPCC08G69/00C08G73/10
Inventor 李文曦董志强于建成
Owner 河北协同化学有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com