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UV-cured acrylic esters hot-melt pressure sensitive adhesive and preparation method thereof

A technology of pressure-sensitive adhesives and acrylates, applied in the field of pressure-sensitive adhesives, can solve problems such as large curing shrinkage, small usage, and difficulty in coating, and achieve cost reduction and energy consumption, good stability, and less coating volume Effect

Inactive Publication Date: 2009-02-04
SHANGHAI ZEAFEE DIGITAL INKJET COMPOSITE MATERIALCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, domestic small-molecule UV-curable solvent-free acrylate hot-melt pressure-sensitive adhesives are slow to be popularized and applied due to insufficient curing degree, large curing shrinkage, and difficulty in coating, and the current usage is still very small.

Method used

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Embodiment Construction

[0018] The formula adopted in this embodiment is:

[0019] Isooctyl Acrylate 46%

[0020] Butyl Acrylate 24%

[0021] Vinyl acetate 24%

[0022] Acrylic 4%

[0023] Molecular weight regulator 5‰

[0024] Azobisisobutyronitrile 5‰

[0025] Viscosity modifier 6‰

[0026] Light curing agent 4‰.

[0027] The materials selected above are all industrial grade reagents.

[0028] The preparation process steps and conditions of the present embodiment are:

[0029] Mix the raw materials evenly according to the above formula, then add to the reactor, the amount added is 1 / 5 of the reactor, after 1 hour of reaction between 70-85°C, enter the pipeline for reaction, the reaction time is 20 minutes, the reaction temperature is 78°C, Final discharge.

[0030] The index of the obtained product: the solid content is 100%, and the viscosity is 1000-2500CPS when the ambient temperature is 80°C.

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Abstract

The present invention provides an ultraviolet-curing acrylic hot-melt pressure-sensitive adhesive, which is characterized in that the solid content is 100 percent and that the viscosity is between 2000CPS and 3500 CPS when the environmental temperature is 80 DEG C. The material formula of the ultraviolet-curing acrylic hot-melt pressure-sensitive adhesive contains 2-ethylhexyl acrylate, butyl acrylate, winyl acetic ester, acrylic acid, molecular weight regulator, azodiisobutyronitrile, viscosity regulator and photic curing agent. The present invention also provides a method for preparing the ultraviolet-curing acrylic hot-melt pressure-sensitive adhesive. The ultraviolet-curing acrylic hot-melt pressure-sensitive adhesive provided by the present invention, which helps to reduce cost and energy consumption and is applicable to an ordinary hot melt coating machine, has the advantages of high curing rate, good stability and low shrinkage rate.

Description

technical field [0001] The invention belongs to the technical field of pressure-sensitive adhesives, and in particular relates to an ultraviolet-curable acrylate hot-melt pressure-sensitive adhesive and a preparation method thereof. Background technique [0002] At present, domestic small-molecule UV-curable solvent-free acrylate hot-melt pressure-sensitive adhesives are slow to be popularized and applied due to insufficient curing degree, large curing shrinkage, and difficulty in coating, and the current usage is still very small. Contents of the invention [0003] The task of the present invention is to address the shortcomings of the existing UV-curable acrylate hot-melt pressure-sensitive adhesives, to provide a UV-curable acrylate hot-melt pressure-sensitive adhesive that can facilitate coating, has a small shrinkage rate, and has a high curing rate. Recipe and method of preparation. [0004] Technical scheme of the present invention: [0005] An ultraviolet light-c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08
Inventor 曹英杰高雅
Owner SHANGHAI ZEAFEE DIGITAL INKJET COMPOSITE MATERIALCO
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