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High-transparency acrylic acid pressure-sensitive adhesive and preparation method thereof

An acrylic pressure-sensitive adhesive technology with high light transmittance, which is applied in the field of pressure-sensitive adhesives, can solve problems such as unsatisfactory light transmittance and failure to use normally, and achieve strong adhesion, large peeling force, and high transparency. Effect

Inactive Publication Date: 2017-08-18
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

However, due to the structure of pure solvent-based acrylate pressure-sensitive adhesives, its light transmittance is not ideal, and it cannot be used normally within the scope of special requirements. Therefore, research on high-light transmittance acrylate pressure-sensitive adhesives and their preparation methods It has great application value and market value

Method used

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  • High-transparency acrylic acid pressure-sensitive adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Prepare raw materials by the following parts by weight:

[0035] 5 parts of vinyl acetate, 20 parts of methyl methacrylate, 45 parts of butyl acrylate, 17 parts of 2-isooctyl acrylate, 4 parts of acrylic acid, 4 parts of hydroxyethyl acrylate, o-phenylphenoxyethyl acrylate 5 parts, 0.3 parts of azobisisobutyronitrile (AIBN), 150 parts of ethyl acetate.

[0036] 1) Mix vinyl acetate, methyl methacrylate, butyl acrylate, 2-isooctyl acrylate, acrylic acid, hydroxyethyl acrylate, and o-phenylphenoxyethyl acrylate to obtain a monomer mixture. 40% of the total amount of the monomer mixture and 40% of the total amount of the solvent ethyl acetate were poured into a four-necked flask with mechanical stirring, a thermometer, and a condenser tube, and heated to 80°C, and then 50% of the total amount of the initiator AIBN was poured into Into the reaction flask, start timing when reflux occurs in the condenser tube, and keep the temperature for 1h.

[0037] 2) After the reaction...

Embodiment 2

[0043] Prepare raw materials by the following parts by weight:

[0044] 5 parts of vinyl acetate, 20 parts of methyl methacrylate, 40 parts of butyl acrylate, 17 parts of 2-isooctyl acrylate, 4 parts of acrylic acid, 4 parts of hydroxyethyl acrylate, o-phenylphenoxyethyl acrylate 10 parts, 0.3 parts of azobisisobutyronitrile, and 150 parts of ethyl acetate.

[0045] 1) Mix vinyl acetate, methyl methacrylate, butyl acrylate, 2-isooctyl acrylate, acrylic acid, hydroxyethyl acrylate, and o-phenylphenoxyethyl acrylate to obtain a monomer mixture. 40% of the total amount of the monomer mixture and 40% of the total amount of the solvent ethyl acetate were poured into a four-necked flask with mechanical stirring, a thermometer, and a condenser tube, and heated to 80°C, and then 50% of the total amount of the initiator AIBN was poured into Into the reaction flask, start timing when reflux occurs in the condenser tube, and keep the temperature for 1h.

[0046] 2) After the reaction, ...

Embodiment 3

[0051] Prepare raw materials by the following parts by weight:

[0052] 5 parts of vinyl acetate, 20 parts of methyl methacrylate, 40 parts of butyl acrylate, 17 parts of 2-isooctyl acrylate, 4 parts of acrylic acid, 4 parts of hydroxyethyl acrylate, o-phenylphenoxyethyl acrylate 10 parts, 0.3 parts of azobisisobutyronitrile, and 150 parts of ethyl acetate.

[0053] 1) Mix vinyl acetate, methyl methacrylate, butyl acrylate, 2-isooctyl acrylate, acrylic acid, hydroxyethyl acrylate, and o-phenylphenoxyethyl acrylate to obtain a monomer mixture. 40% of the total amount of the monomer mixture and 40% of the total amount of the solvent ethyl acetate were poured into a four-necked flask with mechanical stirring, a thermometer, and a condenser tube, and heated to 80°C, and then 50% of the total amount of the initiator AIBN was poured into Into the reaction flask, start timing when reflux occurs in the condenser tube, and keep the temperature for 1h.

[0054] 2) After the reaction, ad...

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Abstract

The invention discloses a high-transparency acrylic acid pressure-sensitive adhesive. The acrylic acid pressure-sensitive adhesive is prepared from the following raw materials in parts by weight: 0-30 parts of cohesion monomers, 50-75 parts of adhesive monomers, 1-10 parts of functional monomers, 5-10 parts of o-phenylphenoxyethyl acrylate, 0.3-0.8 part of an initiator, 100-150 parts of a solvent and 0.1wt%-0.5wt% of a curing agent. The high-transparency acrylic acid pressure-sensitive adhesive provided by the invention has very high permeability (transparency being more than or equal to 93%), an adhesive remaining phenomenon does not occur in normal use and processing processes, the adhesive force is strong, the release force is high, and phenomena of adhesive failure and damaging of an adhesive layer and an interface do not occur in the use process, so that the adhesion problem in the fields of aerospace, electrons, electrical engineering and optical devices such as LCDs, PDPs and OLEDs is well solved.

Description

technical field [0001] The invention belongs to the field of pressure-sensitive adhesives, in particular to an acrylic pressure-sensitive adhesive with high light transmittance and a preparation method thereof. Background technique [0002] Acrylic pressure-sensitive adhesive is currently the most widely used pressure-sensitive adhesive. It is a copolymer of acrylate monomer and other vinyl monomers. Compared with other types of pressure-sensitive adhesives, it has the following characteristics: almost no anti-aging The agent has excellent weather resistance and heat resistance; no phase separation and migration phenomenon, good transparency, poor oil resistance; no effect on the skin, suitable for medical fields, some people even prepared corresponding conductive adhesives, expanding the scope of this field Therefore, it has been widely used in many fields, and its consumption accounts for more than 65% of the entire pressure-sensitive adhesive. Especially in the past two d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C08F220/18C08F220/14C08F218/08C08F220/06C08F220/28C08F220/30
CPCC08F220/18C08F220/1804C09J133/08C08F220/1808C08F220/14C08F218/08C08F220/06C08F220/281C08F220/301
Inventor 白永平张晓勇孙帅王宇龙军李卫东席丹殷晓芬
Owner HARBIN INST OF TECH WUXI RES INST OF NEW MATERIALS
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