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Monocomponent ultraviolet light self-crosslinking type acrylate copolymer coating, and synthetic method and application thereof

An acrylate and ultraviolet light technology, applied in the direction of coating, can solve the problems of easy yellowing of the coating film, strong odor, limited development space, etc., and achieve the effect of maintaining stable performance, stable performance and improved temperature resistance.

Inactive Publication Date: 2012-02-15
SHANGHAI CHENGYING NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After curing, the residual UV photoinitiator is easy to migrate to the surface, forming toxic by-products, with strong odor, and the coating film is easy to turn yellow, which greatly limits the application of UV curing technology in some high-end products (such as food packaging, medical and health supplies, beauty supplies and personal care products) room for development

Method used

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  • Monocomponent ultraviolet light self-crosslinking type acrylate copolymer coating, and synthetic method and application thereof
  • Monocomponent ultraviolet light self-crosslinking type acrylate copolymer coating, and synthetic method and application thereof
  • Monocomponent ultraviolet light self-crosslinking type acrylate copolymer coating, and synthetic method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The one-component UV self-crosslinking acrylate copolymer coating of the present embodiment is synthesized from the following components (parts by weight):

[0037]

[0038] The specific synthesis process is as follows: Put UV-active monomers, photo-crosslinking functional monomers, other monofunctional monomers, initiators and solvents into the reaction kettle and stir to mix evenly. A one-component UV self-crosslinking acrylate copolymer coating is obtained.

[0039] The single-component UV self-crosslinking acrylate copolymer coating obtained above was coated on the base material, and after the solvent was evaporated, the photocrosslinking was carried out in a UV curing device. The irradiation energy of the UV self-crosslinking was 500mJ. After testing, the cross-linking degree of the coating is 80% after ultraviolet light irradiation, and the temperature resistance performance is increased by 40°C.

Embodiment 2

[0041] The one-component UV self-crosslinking acrylate copolymer coating of the present embodiment is synthesized from the following components (parts by weight):

[0042]

[0043] Synthetic process is identical with embodiment 1. The obtained one-component UV self-crosslinking acrylate copolymer coating is coated on the substrate, and after the solvent is evaporated, the photocrosslinking is carried out in a UV curing device, and the irradiation energy of the UV self-crosslinking is 500mJ. After testing, the cross-linking degree of the coating is 60% after ultraviolet light irradiation, and the temperature resistance performance is increased by 20°C.

Embodiment 3

[0045] The one-component UV self-crosslinking acrylate copolymer coating of the present embodiment is synthesized from the following components (parts by weight):

[0046]

[0047] Synthetic process is identical with embodiment 1. The obtained one-component UV self-crosslinking acrylate copolymer coating is coated on the substrate, and after the solvent is evaporated, the photocrosslinking is carried out in a UV curing device, and the irradiation energy of the UV self-crosslinking is 500mJ. After testing, the cross-linking degree of the coating is 90% after ultraviolet light irradiation, and the temperature resistance performance is increased by 40°C.

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Abstract

The invention relates to a monocomponent ultraviolet light self-crosslinking type acrylate copolymer coating, and a synthetic method and application thereof. The coating comprises, by weight, 0.02 to 8 of ultraviolet light active monomers, 2 to 20 of photocrosslinking functional monomers, 15 to 40 of other monofunctional monomers, 0.04 to 0.8 of an initiator and 30 to 80 of a solvent. The coatingis prepared by stirring the above-mentioned raw materials in a reaction vessel for a reflux reaction at a temperature of 75 to 90 DEG C for 5 to 8 hours so as to evenly mix the raw materials and cooling an obtained mixture. The coating is applied on a substrate of a product to be coated, and the substrate is put in an ultraviolet light curing apparatus for crosslinking by illumination after the solvent is completely volatilized. Compared to the prior art, the coating provided in the invention has the advantages of good temperature tolerance, no inclusion of micromolecular compounds, no generation of toxic byproducts, capability to adapt to different application requirements, stable performance, etc.

Description

technical field [0001] The invention relates to a coating, in particular to a single-component ultraviolet self-crosslinking type acrylate copolymer coating and its synthesis method and application. Background technique [0002] Acrylate copolymer coatings have excellent light resistance and outdoor aging properties. Most acrylate copolymers are low or non-toxic and can be directly used in food packaging and medical and sanitary products. Ordinary acrylate copolymers do not have crosslinkability, and their coatings tend to soften when heated, and will dissolve and fall off when they meet organic solvents, so their applications are limited. The existing solution is to introduce crosslinking function into the acrylate copolymer, such as thermal crosslinking (Chinese invention patent application CN101724173A; Chinese invention patent publication CN101338006A), two-component room temperature crosslinking (Chinese invention patent CN100368485C). Chinese patent application CN1019...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/14C09D133/12C09D133/08C09D133/10C09D131/04
Inventor 虞明东曾兆华陈嘉李付亚
Owner SHANGHAI CHENGYING NEW MATERIALS
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