Flexible UV photocureable coating, and preparation method and application thereof

A light-curing coating and flexible technology, which is applied in the direction of epoxy resin coating, polyurea/polyurethane coating, coating, etc., can solve the problem of coating flexibility, insufficient aging resistance, damage to the health of operators, and hidden dangers of production safety, etc. problems, to achieve the effect of easy coating dispersion, good elasticity, and increased flexibility

Active Publication Date: 2020-05-12
JIANGSU SHENGYING NEW MATERIAL +1
View PDF10 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Common leather coatings include acrylic resin emulsions, which are generally thermoplastic resins. The coating film has disadvantages such as hot stickiness, cold brittleness, and solvent resistance; in addition, there are leather finishing agents that are mainly solvent-based and some water-based polyurethane coa

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
  • Flexible UV photocureable coating, and preparation method and application thereof
  • Flexible UV photocureable coating, and preparation method and application thereof
  • Flexible UV photocureable coating, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0034] Preparation Example 1:

[0035] (a) Add toluene diisocyanate and dibutyltin dilaurate at a molar ratio of 1:0.01 into the reactor, heat up to 40°C, and then dropwise add pentaerythritol triacrylate containing p-hydroxyanisole as a polymerization inhibitor (ensure -NCO :-OH molar ratio=2:1), react at 40℃ for 4h;

[0036] (b) Add a certain amount of dialkyl silicone oil (-NCO:-OH molar ratio = 1:1), continue to raise the temperature 70~75℃, test the reaction product by Fourier infrared spectroscopy, until the -NCO reaction is complete , Stop the reaction, and then the light-curable silicone acrylate can be obtained.

Example Embodiment

[0044] Preparation Example 5:

[0045] (a1) Add 2 mol of hexamethylene diisocyanate and the catalyst dibutyltin laurate into the reaction kettle, and raise the temperature to 40~50℃. In order to prevent gelation, slowly add 1 mol of polybutadiene diol to In the reactor, after reacting for 1 hour, the temperature is increased to 60°C;

[0046] (b1) Add 2mol each of hydroxy acrylate and polymerization inhibitor hydroquinone, heat up to 70~80℃, test the reaction product through Fourier infrared spectroscopy until the -NCO infrared peak disappears completely, at the same time, in order to reduce the viscosity of the polyurethane reaction After finishing, add 20% tripropylene glycol diacrylate to dilute and stir evenly to obtain polybutadiene urethane acrylate.

Example Embodiment

[0058] Example 1:

[0059] A super-flexible UV light-curable coating, the components in parts by weight are shown in Table 1;

[0060] The preparation steps of the coating described in this embodiment are as follows: first preheat 400 g of polybutadiene polyurethane acrylate, 200 g of silicone modified acrylate and 100 g of modified epoxy acrylate in an oven at 60°C for 6 hours. Increase the fluidity of the resin, and then add it to the reactor, and then add 215g of isobornyl acrylate (IBOA), stir at 600r / min for 1-2h, after stirring evenly, add 80g of 2-hydroxy-2- Methyl-1-phenyl-1-acetone (1173) and 5 g of defoamer were continuously stirred at 300 r / min and dispersed for 0.5 h to obtain the coating.

[0061] In the present invention, the UV light-curable coating is applied by spraying. Use a spray gun to spray a uniform paint film on the specified sample plate without blanks and overflow. The distance between the spray gun and the coated surface should not be less than 100mm duri...

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 flexible UV photocureable coating, and a preparation method and an application thereof, and relates to the field of material surface treatment agents. The coating comprises,by weight, 20 to 50 parts of polybutadiene urethane acrylate, 10 to 20 parts of organic silicon modified acrylate, 10 to 20 parts of modified epoxy acrylic resin, 10 to 30 parts of a reactive diluents, 0.2 to 1 part of an antifoaming agent and 3-7 parts of a photoinitiator. The polybutadiene urethane acrylate resin is excellent in flexibility, good in low-temperature bending resistance, rapid in curing, good in elasticity and high in glossiness; the main chain of the organic silicon modified acrylate is a silicon-oxygen bond, so that the flexibility of a coating layer formed by the coating canbe effectively improved, and meanwhile, the water resistance and the heat-resistant adhesion of the coating layer are improved; solvent-free one-step photocuring film forming of the coating layer isachieved, and is green, environment-friendly and simple; and the coating can be applied to surfaces of paper, wood, plastic, metal, stone, glass, ceramic and the like, especially leather.

Description

technical field [0001] The invention relates to the field of material surface treatment agents, in particular to a flexible UV photocurable coating and its preparation method and application. Background technique [0002] Ultraviolet (UV) curing is an advanced technology for surface treatment of materials that emerged in the 1960s. UV curing mainly uses ultraviolet light to trigger rapid polymerization and crosslinking of chemically active liquid materials, and instantly solidifies them into solid materials. Compared with traditional water-based coatings and oil-based coatings, UV-curable coatings have the advantages of high efficiency, environmental protection, energy saving, economy, and wide adaptability. Therefore, as one of the important means to reduce VOC emissions, UV light-curing coatings have been widely promoted. [0003] Light-curing coatings can be applied to a variety of substrates, such as paper, wood, plastic, metal, stone, glass, ceramics, leather, etc. 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): C09D175/14C09D163/10C09D7/65C08G18/73C08G18/69C08G18/10C08G18/76C08G18/67C08G18/28C08G18/32
CPCC08G18/10C08G18/673C08G18/69C08G18/73C08G18/7614C08L2205/025C08L2205/035C09D175/14C09D7/65C08L63/10C08L75/14C08G18/2805C08G18/3215C08G18/61
Inventor 董海普乔丽娜杜灿谢允斌
Owner JIANGSU SHENGYING NEW MATERIAL
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