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

A zero-voc water-based epoxy curing agent

A water-based epoxy and curing agent technology, applied in epoxy resin coatings, coatings, etc., can solve the problems of complex preparation process of curing agent, short storage period of curing agent, high viscosity of reactants, etc., and achieve strong adhesion and corrosion resistance Excellent performance and high storage stability

Active Publication Date: 2016-02-17
浙江纳宝莱化工科技有限公司
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects of the prior art, the present invention provides a zero-VOC water-based epoxy curing agent. The curing agent does not contain a solvent and is obtained through a certain preparation method, which overcomes the complicated preparation process of the existing curing agent, the reaction is difficult to control, and is easy to Gel, the viscosity of the reactant is high during the preparation process, some co-solvents need to be added, the storage period of the curing agent is short, and the phenomenon of instability occurs after mixing with pigments and fillers

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 zero-voc water-based epoxy curing agent
  • A zero-voc water-based epoxy curing agent
  • A zero-voc water-based epoxy curing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1: Preparation of water-based epoxy resin curing agent 1

[0035] Add 51.6g of CYD-115 and 116g of polypropylene glycol diglycidyl ether into a 500ml four-necked flask with a stirrer, thermocouple, condenser and constant pressure dropping funnel in an oil bath device, while introducing N 2 While heating to 100°C, then slowly add 20g ED-600 dropwise. After the dropping, heat to 150°C and keep for about 4 hours until the amino group reaction is complete. Finally, cool to room temperature to obtain a light yellow transparent intermediate with an epoxy value of 0.292mol / 100g . Then in the same device, add 74.4g of diethylenetriamine, while passing in N 2 While heating to 80°C, slowly add 170g intermediates dropwise. After the dropwise addition is complete, keep it for about 4h until the epoxy group reaction is complete, and then distill under reduced pressure to remove the excess amine to obtain the adduct; add the adduct In the dispersion tank, after passing 90°C circ...

Embodiment 2

[0038] Example 2: Preparation of water-based epoxy resin curing agent 2

[0039] Add 39.2g of CYD-127 and 78g of polypropylene glycol diglycidyl ether into a 500ml four-necked flask in an oil bath device equipped with a stirrer, thermocouple, condenser and constant pressure dropping funnel, while introducing N 2 While heating to 110°C, slowly add 14g ED-600 dropwise. After the dropwise addition, heat to 160°C and keep it for about 4 hours until the amino group reaction is complete. Finally, cool to room temperature to obtain a light yellow transparent intermediate with an epoxy value of 0.289mol / 100g. Then add 51.6g of triethylenetetramine into the same device, while introducing N 2 While heating to 80°C, slowly add 110g of intermediates dropwise. After the dropwise addition is complete, keep it for about 5h until the epoxy group reaction is complete, and then distill under reduced pressure to remove excess amine to obtain the adduct; add the adduct In the dispersion tank, after...

Embodiment 3

[0043] Example 3: Preparation of water-based epoxy resin curing agent 3

[0044] Add 57g CYD-115c and 116g polyethylene glycol diglycidyl ether into a 500ml four-necked flask in an oil bath device equipped with a stirrer, thermocouple, condenser and constant pressure dropping funnel, while introducing N 2 While heating to 100°C, slowly add 19.8g ED-900 dropwise. After the dropwise addition, heat to 150°C and keep it for about 4h until the amino group reaction is complete, and finally cooled to room temperature to obtain a light yellow transparent intermediate. Then add 51.4g of diethylenetriamine into the same device, while introducing N 2 While heating to 80°C, slowly add 80g of intermediates dropwise. After the dropwise addition is complete, keep it for about 5h until the epoxy group reaction is complete, and then distill under reduced pressure to remove excess amine to obtain the adduct; add the adduct In the dispersion tank, after passing 80°C circulating water, 200g of deioni...

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
amine valueaaaaaaaaaa
tack-free timeaaaaaaaaaa
hardnessaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of chemical coatings, and specifically relates to a VOC (Volatile Organic Compounds)-free water-based epoxy curing agent. The curing agent comprises the following components in percentage by weight: 12-25% of epoxy resin, 15-30% of terminal epoxy glycidyl ether, 3-11% of polyether amine, 18-35% of an amine compound and 40-60% of deionized water. The preparation method of the curing agent comprises the following steps: preparation of an intermediate, epoxy-amine addition and dispersion by using deionized water. The preparation method of the curing agent is simple, the reaction process is easy to control, no organic solvent is used in the preparation process and the storage stability of the curing agent is good. A water-based epoxy zinc-enriched primer which is made of the curing agent has the characteristics of high drying speed, low applicable temperature, good film flexibility, high hardness, excellent corrosion resistance and the like, and can be applied to the fields such as ocean engineering, bridges, grade levels, high-speed rail facilities, wind power equipment, petrochemical engineering and heavy machinery.

Description

Technical field [0001] The invention belongs to the field of chemical coatings, and specifically relates to a zero-VOC water-based epoxy curing agent for water-based epoxy zinc-rich primers. Background technique [0002] At present, my country is in a period of rapid economic development. Steel is widely used in roads and bridges, marine engineering, shipbuilding, petrochemicals, high-speed rail facilities, wind power equipment, heavy machinery and other structures and equipment based on steel structures. Corrosion and scrap, so metal anti-corrosion has become a very urgent problem currently facing. Applying anti-corrosion paint is the most effective measure to prevent metal corrosion. Epoxy zinc-rich primer has the excellent mechanical properties, chemical resistance, flexibility, high adhesion, extremely low volume shrinkage and other properties of epoxy resin, as well as the excellent cathodic protection of zinc powder, and has become the application of metal anticorrosive coa...

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): C08G59/50C08G59/20C09D163/00C09D7/12
Inventor 刘志平刘娅莉王开吉杨锦贾元峰吕冬福曹银祥金土才
Owner 浙江纳宝莱化工科技有限公司
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