Solvent type acrylate pressure-sensitive adhesive preparation method

A technology of acrylate and pressure-sensitive adhesives, which is applied in the direction of adhesive types, ester copolymer adhesives, etc., and can solve problems such as low molecular weight

Inactive Publication Date: 2016-10-12
HARBIN INST OF TECH WUXI RES INST OF NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solvent-based acrylic pressure-sensitive adhesives have many advantages such as low molecular weight, high initial viscosity, good wettability, fast drying speed, good weather resistance and water resistance. Although it occupies a considerable proportion, it cannot be replaced by acrylic pressure-sensitive adhesives such as water-based and hot-melt types at present.

Method used

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  • Solvent type acrylate pressure-sensitive adhesive preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1) First mix 32.8% isooctyl acrylate, 13.3% methyl acrylate, 1.6% maleic anhydride, 0.5% hydroxyethyl acrylate, and 3.2% vinyl acetate, then take 1 / 2 of it and 1 / 2 of all acrylic acid 2.1% 3. Weigh 1 / 2 of 16.6% ethyl acetate and 23.3% of all cyclohexane and mix them in a beaker. Then pour it into a flask equipped with a stirring device, a thermometer and a condenser, gradually heat it to 78°C, and then add 1 / 3 of 0.3% of the total initiator into the flask to start the reaction.

[0034] 2) Pay attention to observe that when small bubbles appear on the reaction liquid surface, start timing for 1 hour. After 1 hour of reaction, 1 / 3 of the total initiator AIBN and 1 / 3 of the total acrylic acid are evenly added dropwise into the reaction system through a constant pressure funnel, of which AIBN was added dropwise ten times within 90 minutes, and acrylic acid was added dropwise five times within 40 minutes. After the dropwise addition was completed, keep warm for 1-2 hours. ...

Embodiment 2

[0040] 1) First mix 32.8% isooctyl acrylate, 13.3% methyl acrylate, 1.6% maleic anhydride, 0.5% hydroxyethyl acrylate, 3.2% vinyl acetate, and 0.03% epoxy acrylate, then take 1 / 2 and 1 / 3 of 2.1% of all acrylic acid, 16.6% of ethyl acetate and 1 / 2 of 23.3% of all cyclohexane were weighed and mixed in a beaker. Then pour it into a flask equipped with a stirring device, a thermometer and a condenser, gradually heat it to 78°C, and then add 1 / 3 of 0.3% of the total initiator into the flask to start the reaction.

[0041]2) Pay attention to observe that when small bubbles appear on the reaction liquid surface, start timing for 1 hour. After 1 hour of reaction, 1 / 3 of the total initiator AIBN and 1 / 3 of the total acrylic acid are evenly added dropwise into the reaction system through a constant pressure funnel, of which AIBN was added dropwise ten times within 90 minutes, and acrylic acid was added dropwise five times within 40 minutes. After the dropwise addition was completed, kee...

Embodiment 3

[0047] 1) First mix 32.8% isooctyl acrylate, 13.3% methyl acrylate, 1.6% maleic anhydride, 0.5% hydroxyethyl acrylate, 3.2% vinyl acetate, and 0.05% epoxy acrylate, then take 1 / 2 and 1 / 3 of 2.1% of all acrylic acid, 16.6% of ethyl acetate and 1 / 2 of 23.3% of all cyclohexane were weighed and mixed in a beaker. Then pour it into a flask equipped with a stirring device, a thermometer and a condenser, gradually heat it to 78°C, and then add 1 / 3 of 0.3% of the total initiator into the flask to start the reaction.

[0048] 2) Pay attention to observe that when small bubbles appear on the reaction liquid surface, start timing for 1 hour. After 1 hour of reaction, 1 / 3 of the total initiator AIBN and 1 / 3 of the total acrylic acid are evenly added dropwise into the reaction system through a constant pressure funnel, of which AIBN was added dropwise ten times within 90 minutes, and acrylic acid was added dropwise five times within 40 minutes. After the dropwise addition was completed, ke...

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Abstract

The invention discloses a solvent type acrylate pressure-sensitive adhesive preparation method. Bifunctional resin-epoxy acrylate with inner crosslinking points for improving cohesion strength is adopted as a raw material. A glass transition temperature of prepared solvent type acrylate pressure-sensitive adhesive is higher than -50 DEG C and lower than -40 DEG C, and the prepared solvent type acrylate pressure-sensitive adhesive is high in adhesion that displacement is avoided in 200h at 25 DEG C, high in stripping force (16N / 25mm) and free of residues. Owing to excellent performances of the solvent type acrylate pressure-sensitive adhesive, high requirements of the current adhesive market on pressure-sensitive adhesives are met, and problems of military and medical emergency repair and unfirm adhesive tapes, short service cycle and residues on protected substrates in daily life can be well solved.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a preparation method of a solvent-type acrylate pressure-sensitive adhesive. Background technique [0002] Adhesive refers to the technology of connecting the surfaces of homogeneous or heterogeneous objects with adhesive, which has the characteristics of continuous stress distribution, high viscosity, no residual glue, light weight and convenient use. Gluing is especially suitable for the connection of different materials, different thicknesses, ultra-thin specifications and complex components, such as steel, wood, plastic and objects used in special environments. Nowadays, adhesives are developing rapidly and have a wide range of applications. [0003] There are many classification methods of adhesives, which can be divided into thermosetting type, hot melt type, room temperature curing type, pressure sensitive type and so on according to the application method. Among them, ...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F220/14C08F222/06C08F220/28C08F218/08C08F220/06C08F220/32C09J133/08
CPCC08F220/18C08F220/1808C09J133/08C08F220/14C08F222/06C08F220/281C08F218/08C08F220/06C08F220/32
Inventor 白永平张晓勇龙军李卫东席丹殷晓芬李晶波
Owner HARBIN INST OF TECH WUXI RES INST OF NEW MATERIALS
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