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A removable pressure sensitive adhesive composition

A pressure-sensitive adhesive, composition technology, applied in the direction of adhesive type, ester copolymer adhesive, coating, etc., can solve the phenomenon of removable pressure-sensitive adhesive residue, poor aging resistance, It can remove problems such as poor workability of pressure-sensitive adhesives, and achieve the effects of convenient production and operation, high peel strength, and excellent aging resistance.

Active Publication Date: 2022-07-05
浙江龙游道明光学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the poor aging resistance of the removable pressure-sensitive adhesive in the prior art, the poor workability of the removable pressure-sensitive adhesive with high initial tack, and the removable pressure-sensitive adhesive with high peel strength. The mixture is prone to defects such as residual glue phenomenon, and a new removable pressure-sensitive adhesive composition is provided

Method used

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  • A removable pressure sensitive adhesive composition
  • A removable pressure sensitive adhesive composition
  • A removable pressure sensitive adhesive composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A removable pressure-sensitive adhesive composition, comprising the following components by weight:

[0052]

[0053]

[0054] Its preparation steps are as follows:

[0055] Q1: Take the above-mentioned weight parts of dodecyl acrylate, methyl acrylate, acrylic acid, diacetone acrylamide, hydroxyethyl methacrylate, ethyl acetate, azobisisobutyl cyanide and put them into the container, and put them into the container at 200 rpm. Mixing solution A was prepared by stirring at a rotational speed of 1 / min for 15 minutes;

[0056] Q2: Get 30% of the total weight of the above-mentioned mixed solution A and put it into the reaction kettle, fully stir at normal temperature for 10 minutes, and the stirring speed is 80 rev / min, continue to feed nitrogen into the reaction kettle while stirring, and after stirring, The temperature in the reactor was gradually raised to 75°C, and the reaction was continued for 30 minutes;

[0057] Q3: Take the remaining mixed solution A and p...

Embodiment 2

[0067] A removable pressure-sensitive adhesive composition, comprising the following components by weight:

[0068]

[0069] Its preparation steps are as follows:

[0070] Q1: Take the above-mentioned weight parts of dodecyl acrylate, methyl acrylate, acrylic acid, diacetone acrylamide, hydroxyethyl methacrylate, ethyl acetate, azobisisobutyl cyanide and put them into the container, and put them into the container at 300 rpm. Rotation speed per minute was stirred for 30 minutes to obtain mixed solution A;

[0071] Q2: get 45% of the total weight of the above-mentioned mixed solution A and put it into the reaction kettle, fully stir at normal temperature for 30 minutes, and the stirring speed is 200 rev / min, continue to feed nitrogen into the reaction kettle while stirring, and after the stirring finishes, Gradually increase the temperature in the reactor to 80°C, and continue to react for 120 minutes;

[0072] Q3: Take the remaining mixed solution A and place it in the dr...

Embodiment 3

[0082] A removable pressure-sensitive adhesive composition, comprising the following components by weight:

[0083]

[0084] Its preparation steps are as follows:

[0085] Q1: Take the above-mentioned weight parts of dodecyl acrylate, methyl acrylate, acrylic acid, diacetone acrylamide, hydroxyethyl methacrylate, ethyl acetate, azobisisobutyl cyanide and put them into the container, and put them into the container at 250 rpm. 22 minutes of stirring at a rotational speed of / min to obtain mixed solution A;

[0086] Q2: get 38% of the total weight of the above-mentioned mixed solution A and put it into the reactor, fully stir at normal temperature for 20 minutes, and the stirring speed is 140 rev / min, while stirring, continue to feed nitrogen into the reactor, after stirring, The temperature in the reactor was gradually raised to 78°C, and the reaction was continued for 75 minutes;

[0087] Q3: Take the remaining mixed solution A and place it in the dropping funnel, add it ...

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Abstract

The invention discloses a removable pressure-sensitive adhesive composition, comprising 40-50 parts of dodecyl acrylate, 35-50 parts of methyl acrylate, 0.1-1 part of acrylic acid and 0.5-2 parts of diacetone acrylamide , 1 to 3 parts of hydroxyethyl methacrylate, 40 to 60 parts of ethyl acetate, 0.2 to 0.8 parts of azobisisobutyl cyanide, 5 to 10 parts of tert-butanol, 2 to 5 parts of acetylacetone, and 0.2 parts of aluminum acetylacetonate ~0.5 part, the preparation steps are as follows: Q1: take dodecyl acrylate, methyl acrylate, acrylic acid, diacetone acrylamide, hydroxyethyl methacrylate, ethyl acetate, azobisisobutyl cyanide and put it into a container , stir to obtain the mixed solution A; Q2: take the mixed solution A and put it into the reaction kettle, and continue to feed nitrogen to react; Q3: take the mixed solution A and add it dropwise to the reaction kettle; Q4: cool down to 40~45 ℃; Q5: take Tert-butanol, acetylacetone, and aluminum acetylacetonate were added to the above-mentioned reaction kettle, and the stirring was completed to discharge. The invention has excellent aging resistance, weather resistance, good workability and removability, and is not easy to residue glue.

Description

technical field [0001] The present invention relates to pressure sensitive adhesives, and more particularly to a removable pressure sensitive adhesive composition. Background technique [0002] Removable pressure-sensitive adhesives are commonly used on car shell protective films to ensure that the car shell protective film can be lifted when replacing the car shell protective film without damaging the car paint. However, in the actual application process, the existing removable pressure-sensitive adhesives have the following three defects: [0003] 1. Part of the removable pressure-sensitive adhesive has a reduced adhesive force after outdoor aging, which leads to defects such as bubbling and warping at the curved surface of the protective film of the car shell, especially at the waistline of the car; [0004] 2. During the large-area film construction of the car shell, if the removable pressure-sensitive adhesive has a high initial tack, when the first construction is uns...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/08C09J133/12C08F220/18C08F220/14C08F220/06C08F220/20C08F220/58
CPCC09D133/24C08F220/1812C08F220/14C08F220/06C08F220/20C08F220/58
Inventor 郑小平苏国芳胡锋舒林飞
Owner 浙江龙游道明光学有限公司
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