阅读说明：本技术 丙烯酸酯单体及其合成方法、uv湿气双固化的热熔胶膜 (Acrylate monomer, synthesis method thereof and UV (ultraviolet) moisture dual-curing hot melt adhesive film ) 是由 熊唯诚 郑时恒 茹正伟 于 2019-08-28 设计创作，主要内容包括：本发明属于丙烯酸酯单体制备技术领域,具体涉及一种丙烯酸酯单体及其合成方法、UV湿气双固化的热熔胶膜。其中超支化含硅丙烯酸酯单体通过KH550、三丙烯酸酯、醇钠在有机溶剂中,利用胺基双键迈克尔加成反应一步制成,可以稳定控制反应温度和速度,具有反应简单、过程可控、产物纯度高等优点,非常适合制备UV湿气双固化的热熔胶膜,可以减少UV湿气双固化的热熔胶膜中的杂质,提高热熔胶膜的性能。(The invention belongs to the technical field of preparation of acrylate monomers, and particularly relates to an acrylate monomer and a synthesis method thereof, and a UV (ultraviolet) moisture dual-curing hot melt adhesive film. The hyperbranched silicon-containing acrylate monomer is prepared by KH550, triacrylate and sodium alkoxide in an organic solvent by using amino double bond Michael addition reaction in one step, can stably control the reaction temperature and speed, has the advantages of simple reaction, controllable process, high product purity and the like, is very suitable for preparing a UV (ultraviolet) moisture dual-curing hot melt adhesive film, can reduce impurities in the UV moisture dual-curing hot melt adhesive film, and improves the performance of the hot melt adhesive film.)

1. A hyperbranched silicon-containing acrylate monomer has a structural formula as follows:

Wherein

R₁Is CH₂-CH₂-Si(OMe)₃。

2. The hyperbranched silicon-containing acrylate monomer of claim 1,

R₂Is H or CH₃。

3. A method for synthesizing hyperbranched silicon-containing acrylate monomer is characterized by comprising the following steps:

Mixing KH550, triacrylate and sodium alkoxide in an organic solvent;

Heating for reaction;

Filtering and washing; and

drying and purifying to obtain the hyperbranched silicon-containing acrylate monomer.

4. The method of synthesis according to claim 3,

The reaction formula of the heating reaction is as follows:

5. The method of synthesis according to claim 3,

the molar ratio of the KH550 to the triacrylate to the sodium alkoxide is 1: 1-3: 0.005-0.01.

6. The method of synthesis according to claim 3,

The organic solvent includes: one or more of THF, dichloromethane, dioxane and ethyl formate.

7. The method of synthesis according to claim 3,

The triacrylate comprises any one or a mixture of glycerol triacrylate and trimethylolpropane triacrylate.

8. A UV moisture dual-curing hot melt adhesive film is characterized in that,

The hot melt adhesive film is suitable for being prepared by using the hyperbranched silicon-containing acrylate monomer as claimed in claim 1 as a main raw material.

Technical Field

The invention belongs to the technical field of preparation of acrylate monomers, and particularly relates to an acrylate monomer and a synthesis method thereof, and a UV (ultraviolet) moisture dual-curing hot melt adhesive film.

Background

the hot-melt optical adhesive film is popular in recent years, is suitable for the lamination of screens with various sizes, and is simple in processing process and easy to disassemble reversely. The hot-melt optical adhesive film can reduce the bonding threshold of the touch screen and the liquid crystal module thereof and improve the bonding yield.

the traditional optical packaging is generally synthesized by conventional acrylate monomers (such as methyl acrylate, ethyl acrylate, 2-methyl methacrylate, 2-ethyl methacrylate and the like) and other auxiliary materials (such as a photoinitiator, a coupling agent, a catalyst, an antioxidant, a light stabilizer and the like), and the curing of shadow parts shielded at the corners of a screen with an overlarge size is incomplete, so that the UV irradiation intensity of a touch screen frame or a place with colored ink at the edge is weak, the peeling strength in the field of black edges is insufficient, delamination can be generated after long-term use, the defect rate is high, the rework is complex, and the traditional optical packaging is difficult to be suitable for the automatic packaging of an overlarge display screen with 60-90 inches.

disclosure of Invention

The invention aims to provide an acrylate monomer, a synthesis method thereof and a UV (ultraviolet) and moisture dual-curing hot melt adhesive film.

In order to solve the technical problems, the invention provides a hyperbranched silicon-containing acrylate monomer, which has a structural formula as follows:

wherein

R₁Is CH₂-CH₂-Si(OMe)₃。

Further, R₂Is H or CH₃。

In a second aspect, the invention also provides a method for synthesizing a hyperbranched silicon-containing acrylate monomer, comprising: mixing KH550, triacrylate and sodium alkoxide in an organic solvent; heating for reaction; filtering and washing; and drying and purifying to obtain the hyperbranched silicon-containing acrylate monomer.

Further, the reaction formula of the heating reaction is as follows:

further, the molar ratio of the KH550 to the triacrylate to the sodium alkoxide is 1: 1-3: 0.005-0.01.

Further, the organic solvent includes: one or more of THF, dichloromethane, dioxane and ethyl formate.

Further, the triacrylate comprises any one of glycerol triacrylate, trimethylolpropane triacrylate, or a mixture of both.

In a third aspect, the invention further provides a UV moisture dual-curing hot melt adhesive film, which is suitable for being prepared by using the hyperbranched silicon-containing acrylate monomer as a main raw material.

The hyperbranched silicon-containing acrylate monomer and the synthesis method thereof have the beneficial effects that the hyperbranched silicon-containing acrylate monomer is synthesized by the UV moisture dual-curing hot melt adhesive film in an organic solvent through KH550, triacrylate and sodium alkoxide, and the hyperbranched silicon-containing acrylate monomer is prepared by one-step amino double bond Michael addition reaction, so that the reaction temperature and the reaction speed can be stably controlled, the method has the advantages of simple reaction, controllable process, high product purity and the like, is very suitable for preparing the UV moisture dual-curing hot melt adhesive film, can reduce impurities in the UV moisture dual-curing hot melt adhesive film, and improves the performance of the hot melt adhesive film so as to be suitable for UV and moisture dual curing.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a flow chart of a process for preparing a hyperbranched silicon-containing acrylate monomer of the invention;

FIG. 2 is an infrared spectrum of a hyperbranched silicon-containing acrylate monomer of the invention;

FIG. 3 shows the CDCl of the hyperbranched silicon-containing acrylate monomer of the invention₃Hydrogen spectra in solution;

FIG. 4 is a GPC chart of a hyperbranched silicon-containing acrylate monomer of the invention in THF solution.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Interpretation of custom nouns or English abbreviations:

UV: ultraviolet rays;

KH 550: KH550 type silane coupling agent with CAS number 919-30-2;

THF: tetrahydrofuran, a heterocyclic organic compound;

EVA resin: from nonpolar, crystalline vinyl monomers (C)₂H₄) And a strongly polar, noncrystalline vinyl acetate monomer (CH)₃COOC₂H₃) A thermoplastic resin obtained by high-pressure bulk polymerization in the presence of an initiator;

POE resin: a polymer blend comprised of octene and a polyolefin resin, the continuous phase and the dispersed phase exhibiting two phase separation;

Triacrylate: acrylates containing three functional groups, such as glycerol triacrylate, trimethylolpropane triacrylate (TMPTA), or mixtures of the two;

trimethylolpropane triacrylate: i.e., TMPTA, having the formula (CH)₂＝CHCOOCH₂)₃-CCH₂CH₃。