Yellowing resistant and waterborne epoxy hardener and preparation technology thereof

A water-based epoxy and anti-yellowing technology, which is applied in the field of curing agent, can solve the problems of yellowing of cured film and poor application effect, and achieve the effects of improved anti-yellowing performance, improved quality, and good application effect

Inactive Publication Date: 2019-08-02
上海瀚岱化学有限公司
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the problem in the prior art that the cured film produced by the water-based epoxy curing agent is prone to yellowing after use, resulting in poor overall application effect, the first purpose of the present invention is to provide a yellowing-resistant water-based epoxy curing agent. agent, by fully compounding and synergizing polyetheramine and polybasic organic acid to solve the above technical problems, the cured film produced after curing is not easy to produce yellowing, and the overall application effect is good

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
  • Yellowing resistant and waterborne epoxy hardener and preparation technology thereof
  • Yellowing resistant and waterborne epoxy hardener and preparation technology thereof
  • Yellowing resistant and waterborne epoxy hardener and preparation technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1: A kind of anti-yellowing water-based epoxy curing agent, each component and its corresponding parts by weight are shown in Table 1, and are prepared through the following steps:

[0044] Step 1: Mix the corresponding parts by weight of triethylenetetramine, dimer acid and ethylene glycol diglycidyl ether evenly, raise the temperature to 120°C, then add the corresponding parts by weight of polyetheramine, and react at a constant temperature of 40 min;

[0045] Step 2, then add bisphenol A epoxy resin in corresponding parts by weight, heat up to 150°C, react at a constant temperature for 75 minutes, cool down to 75°C, add phenyl glycidyl ether, react at a constant temperature for 40 minutes, and obtain the initial agent;

[0046] Step 3: Add polyamide, polyamide resin, and triethanolamine in parts by weight to the initial agent, raise the temperature to 95°C, distill for 17.5 minutes, and then cool down to room temperature, add ethanol in parts by weight, and...

Embodiment 2-8

[0047] Example 2-8: A yellowing-resistant water-based epoxy curing agent, the difference from Example 1 is that each component and its corresponding parts by weight are shown in Table 1.

[0048] Each component and parts by weight thereof in table 1 embodiment 1-8

[0049]

[0050]

Embodiment 9

[0051] Embodiment 9: A kind of anti-yellowing water-based epoxy curing agent, the difference from Example 1 is that step one is specifically set as, the corresponding parts by weight are 40 parts of triethylenetetramine, 40 parts of benzoic acid Mix evenly with 8 parts of ethylene glycol diglycidyl ether, raise the temperature to 120°C, then add corresponding parts by weight of polyetheramine, and react at a constant temperature of 40mim.

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 a yellowing resistant and waterborne epoxy hardener and a preparation technology thereof, relates to the technical field of a hardener, and solves the problem of poorer integral application effect as a curing film generated by the waterborne epoxy hardener after use easily yellows. The yellowing resistant and waterborne epoxy hardener includes the following components in parts by weight: 40-50 parts of triethylene tetramine, 30-40 parts of polyorganic acid, 5-10 parts of polyether amine, 5-10 parts of BPA epoxy resin, 6-10 parts of polyamide, 5-9 parts of a modifying agent, 4-8 parts of an accelerator, 6-10 parts of a diluent, 4-7 parts of phenyl glycidyl ether and 6-8 parts of glycol diglycidyl ether. The yellowing resistant and waterborne epoxy hardener provided by the invention has integral good application effect as the curing film generated after use of the hardener is not easy to yellow.

Description

technical field [0001] The invention relates to the technical field of curing agents, more specifically, it relates to a yellowing-resistant water-based epoxy curing agent and a preparation process thereof. Background technique [0002] The water-based epoxy system is a dispersed phase structure, which is composed of water-based epoxy resin, water-based epoxy curing agent, water and other multi-phase, while the epoxy resin and curing agent are dispersed in the water phase in the form of dispersed phase, and the cross-linking curing process It is the interpenetration and internal diffusion crosslinking reaction process between particles in the process of water evaporation. [0003] A water-based epoxy resin curing agent is disclosed in the Chinese invention application document with the publication number CN105837797A, which comprises the following components in parts by weight: 10-15 parts of m-xylylenediamine, isophoronediamine 2-4 parts, 8-10 parts of trimethylcyclohexane...

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): C08G59/58C08G59/60C08K3/36C08K3/08C08K7/28C08L33/26
CPCC08G59/58C08G59/60C08K3/08C08K3/36C08K7/28C08K2003/0812C08K2201/011C08K2201/014C08L33/26
Inventor 沈君岱沈岳
Owner 上海瀚岱化学有限公司
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