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

Novel ultraviolet aging-resistant powder coating and preparation method thereof

A technology of powder coating and ultraviolet light, which is applied in the direction of powder coating, polyester coating, epoxy resin coating, etc., and can solve the problems of unsustainable protective effect, inability to play the role of ultraviolet light protection, affecting the appearance and mechanical properties of materials, etc.

Inactive Publication Date: 2020-04-17
江苏浪势塑粉有限公司
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is simple and practical, and the cost is low, but it has high requirements on the compatibility and processing of the light stabilizer and polymer resin, otherwise the light stabilizer will precipitate out of the system, not only cannot play the role of UV protection, but also affect Material appearance and mechanical properties
In addition, for places that will experience long-term exposure to sunlight and high temperatures, small molecule light stabilizers will gradually precipitate from the polymer resin system at high temperatures, and the protective effect cannot last

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
  • Novel ultraviolet aging-resistant powder coating and preparation method thereof
  • Novel ultraviolet aging-resistant powder coating and preparation method thereof
  • Novel ultraviolet aging-resistant powder coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Weigh 2.14g of 4,4'-dihydroxybenzophenone and 1.84g of epichlorohydrin, mix them at 25°C, fill them with nitrogen protection gas, heat to 50°C and stir for 10 minutes, the system dissolves, become clarified. Then the temperature of the reaction system was raised to 70°C, under N 2 To react under protection, add 8 g of 30% NaOH aqueous solution dropwise with a constant pressure funnel, control heating to maintain the system temperature between 70°C and 90°C, and stop heating after 4 hours of reaction. Excess epichlorohydrin was distilled off under reduced pressure, and then the system was washed with deionized water, filtered, and dried to obtain a novel epoxy resin containing an ultraviolet light stabilizer. Productive rate 81.2%, reaction equation is as follows:

[0029]

[0030] The infrared spectrogram of this product sees attached figure 1 , 915cm -1 The peak at indicates the formation of epoxy structures.

[0031] (2) Weigh 2g of the novel epoxy resin p...

Embodiment 2

[0034] The 4,4'-dihydroxybenzophenone in Example 1 is replaced by 4 hydroxybenzophenone, the amount of 4 hydroxybenzophenone added is changed to 1.98g, and 1.84g of epichlorohydrin is still 1.84g , the mass concentration is 30% NaOH aqueous solution changed to 7g. Except that the amount of reactant changes, other operating steps are the same as those in Example 1. Yield 84.7%.

[0035] The reaction equation of this example is as follows:

[0036]

[0037] The infrared spectrogram of this product sees attached figure 2 , 915cm -1 The peak at indicates the formation of epoxy structures.

Embodiment 3

[0039] The 4,4'-dihydroxybenzophenone in Example 1 was replaced by 3,4-dihydroxybenzophenone. Except that the type of reactant was changed, other operating steps were the same as those in Example 1. Yield 71.7%.

[0040] The reaction equation of this example is as follows:

[0041]

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 relates to a novel ultraviolet aging-resistant powder coating and a preparation method thereof. The invention relates to a novel thermocuring ultraviolet stabilizer and preparation thereof. The preparation comprises the specific steps: (1) stirring and dissolving a compound containing hydroxyl and benzophenone structures and epoxy chloropropane under the protection of inert gas, thendropwise adding a NaOH aqueous solution under the protection of N2, carrying out reaction, washing with deionized water, filtering and drying to obtain novel epoxy resin containing an ultraviolet stabilizer; and (2) mixing the synthesized novel epoxy resin with other epoxy resin to be used as an epoxy resin component in the powder coating, mixing with an inorganic filler, a leveling agent, a curing agent, a pigment filler and polyester, and grinding to prepare the ultraviolet aging-resistant powder coating. The ultraviolet light stabilizer is fully bonded to the epoxy resin through chemical bonds, so that the ultraviolet light stabilizer and common epoxy resin can form a uniform copolymerization system, macroscopic phase separation and precipitation cannot be generated between the light stabilizer and a resin coating layer, and the appearance and photoaging resistance of the coating layer can be guaranteed for a long time.

Description

technical field [0001] The invention relates to the field of powder coating preparation, in particular to an anti-ultraviolet aging powder coating used in the field of automobile coating and a preparation method thereof. Background technique [0002] Powder coating is a solid powder resin coating composed of resin and pigments, fillers and additives. Unlike ordinary solvent-based paints and water-based paints, it does not use solvents and water as dispersion media, so it has the characteristics of no solvent pollution, 100% film formation, and low energy consumption. There are two types of powder coatings, thermoplastic and thermosetting. Thermoplastic powder coatings have poor appearance and poor adhesion to metals, so they are rarely used in the field of automotive coatings. Thermosetting powder coatings are generally used in automotive coatings. Thermosetting powder coatings use thermosetting resins as film-forming substances. During the drying process, the resins are f...

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): C08G59/06C07D303/23C09D163/00C09D167/02C09D5/03
CPCC08G59/063C07D303/23C09D163/00C09D5/03C08L2201/08C08L2205/025C08L2205/03C08K2003/2241C08L63/00C08L67/02C08K3/22
Inventor 孙浪司妍孙连波
Owner 江苏浪势塑粉有限公司
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