Environment-friendly flame-retardant water-soluble high-imino melamine resin and production method thereof

A technology of high imino melamine and production method, which is applied in the industrialized environmental protection production field of high imino melamine resin, can solve the problems of poor etherification and condensation reaction selectivity, insufficient imino content, and high formaldehyde content, and achieves suppression of Condensation reaction, excellent performance, effect of promoting etherification reaction

Active Publication Date: 2021-03-23
CHONGQING JIANFENG HAOKANG CHEM
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above method has problems such as high formaldehyde content, poor selectivity of etherification and condensation reactions, insufficient imino content, high cost, and waste discharge.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The present invention will be further described below in conjunction with specific examples, but those skilled in the art should understand that the examples described below are only for better understanding and implementation of the present invention, and are not intended to limit the present invention.

[0027] Production of Intermediate Raw Materials of Low Methylol Melamine

[0028] First, formaldehyde and melamine are added to the hydroxylation reactor so that the molar ratio of melamine to formaldehyde is about 1:3 to 4;

[0029] Then add alkali such as sodium hydroxide to adjust the pH value of the reaction solution in the reactor to be between 7 and 8;

[0030] Control the temperature in the reactor to 50°C to 70°C, and react for 2 to 3 hours;

[0031] After the reaction solution is cooled, it is introduced into a centrifuge for centrifugation to obtain a low methylol melamine wet material and mother liquor;

[0032] Mother liquor is returned in the reactor 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

No PUM Login to view more

Abstract

The invention discloses environment-friendly and flame-retardant water-soluble high-imino melamine resin and a production method thereof. The production method comprises steps as follows: low methylolmelamine is produced continuously by use of high-concentration formaldehyde; low methylol melamine is subjected to methoxylation, the pH value is controlled through acetic acid and ammonium acetate;acetylacetone is added to eliminate surplus formaldehyde; dealcoholization and dehydration treatment is performed, and the high-imino melamine resin is obtained. The high-imino melamine resin producedwith the method has excellent formaldehyde content, anti-static property or auto-agglutination property and is very suitable for being used as a coating, an insulating packaging material and the like, and zero discharge of wastewater can be realized in the whole production process.

Description

technical field [0001] The invention relates to the industrialized environment-friendly production of high imino melamine resin. Background technique [0002] Utilize melamine such as hexamethylol melamine or low methylol melamine to synthesize etherified amino resins, you can refer to the applicant’s previous patents or patent applications CN 103739563B, CN 103739803B, CN103709111B, CN105968283A, CN105968281A, CN105968282A and CN106008870A, here also Its entire content is incorporated by reference. In addition, CN103102466A and CN105585684A also disclose the synthesis method of high imino etherified melamine resin or amino resin. However, the above method has problems such as high formaldehyde content, poor selectivity of etherification and condensation reactions, insufficient imino content, high cost, and waste discharge. Contents of the invention [0003] The object of the present invention is to provide a production method of high imino melamine resin, which can at l...

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): C08G12/42C08G12/32
CPCC08G12/32C08G12/42
Inventor 李平胡劲松周建平吴常兴
Owner CHONGQING JIANFENG HAOKANG CHEM
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