Novel acrylic pressure-sensitive adhesive protective film

An acrylic pressure-sensitive adhesive protective film, acrylic technology, applied in the direction of pressure-sensitive films/sheets, adhesives, etc., can solve the problems of poor exhaust and bubble generation at the contact between the product and the protective film, and achieve good bonding characteristics and peel strength Improvement, the effect of a simple formula

CN108219702AActive Publication Date: 2018-06-29SHANGHAI BAOLIJIA NEW MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-06-29

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Abstract

The invention relates to a novel acrylic pressure-sensitive adhesive protective film. The novel acrylic pressure-sensitive adhesive protective film is at least prepared from the raw materials as follows: an acrylic acid monomer, an acrylate monomer, a solvent and an initiator. A reticular structure can be formed when the acrylic pressure-sensitive adhesive protective film is applied to the surfaceof a product, and bubbles are eliminated timely. The acrylic pressure-sensitive adhesive protective film has a simple formula, and additives such as antioxidants, tackifying resin, softeners and thelike are not added. The pressure-sensitive adhesive can be recycled and can still maintain good adhesive characteristic after being adhered and peeled off many times, and the peeling strength cannot be reduced significantly; the peeling strength cannot be improved remarkably after the acrylic pressure-sensitive adhesive is adhered for a long period of time or subjected to higher pressure, and thepressure-sensitive adhesive can be easily separated from an adhered substance without transfer of an adhesion layer.
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Description

technical field

[0001] The invention belongs to a solvent-type polyacrylate pressure-sensitive adhesive, which is suitable for the field of protective films. The prepared protective film has a network structure and is applied to the temporary protection of the surfaces of materials in the electronics, household appliances and building materials industries. Background technique

[0002] Pressure-sensitive adhesive, short for pressure-sensitive adhesive, is a type of adhesive that is sensitive to pressure and is mainly used to prepare pressure-sensitive tapes. The peeling force of general pressure-sensitive adhesive (the peeling force shown after the adhesive tape and the adhered surface are pressed and pasted) < the cohesive force of the adhesive (the force between the molecules of the pressure-sensitive adhesive) < the sticking force of the adhesive (the adhesive and the base Adhesion between materials), such a pressure-sensitive adhesive will not have degumming and ot...

Examples

Embodiment approach

[0030] As an embodiment of the present invention, the acrylic acid monomer with molecular weight less than 200 is selected from acrylic acid, methacrylic acid, 2-ethylacrylic acid, 2-amino-2-acrylic acid, 3-(3-thienyl)acrylic acid, One or more of 2-acetamidoacrylic acid, α-mercaptophenylacrylic acid, and 3-(phenylthio)acrylic acid.

[0031] As an embodiment of the present invention, the acrylic acid monomer with a molecular weight greater than 250 is selected from 3-[4-(benzyloxy)phenyl]acrylic acid, 3-(2-nitrophenyl)-2-phenyl One or more of acrylic acid, 2-acetylamino-3-(4-biphenyl)acrylic acid, (2E)-3-[3-(benzyloxy)phenyl]acrylic acid.

[0032] Starting from improving the application performance of the protective film of the present invention, the acrylic acid monomer having a molecular weight less than 200 is selected from acrylic acid, 2-amino-2-acrylic acid, 2-ethylacrylic acid, 3-(phenylthio)acrylic acid one or more.

[0033] The acrylic acid monomer with a molecular w...

Embodiment approach 1

[0065] Embodiment 1. This embodiment provides a novel acrylic pressure-sensitive adhesive protective film, and the preparation raw materials of the novel acrylic pressure-sensitive adhesive protective film at least include:

[0066] Acrylic monomers, acrylate monomers, solvents and initiators.

[0067] Embodiment 2. The novel acrylic pressure-sensitive adhesive protective film described in Embodiment 1, the acrylic monomer is an acrylic monomer with a molecular weight less than 200 and / or an acrylic monomer with a molecular weight greater than 250.

[0068] Embodiment 3. A new type of acrylic pressure-sensitive adhesive protective film described in embodiment 2, the acrylic monomer having a molecular weight less than 200 is selected from acrylic acid, methacrylic acid, 2-ethylacrylic acid, 2-amino-2-acrylic acid , 3-(3-thienyl)acrylic acid, 2-acetamidoacrylic acid, α-mercaptophenylacrylic acid, and 3-(phenylthio)acrylic acid.

[0069] Embodiment 4. A kind of novel acrylic pre...

Embodiment 1

[0077] Embodiment 1: This embodiment provides a novel acrylic pressure-sensitive adhesive protective film. The raw materials for the preparation of the novel acrylic pressure-sensitive adhesive protective film at least include: acrylic monomers, acrylate monomers, solvents and initiators.

[0078] The preparation method of described novel acrylic pressure-sensitive adhesive protective film is as follows:

[0079] (1) Weigh 1 part of acrylic acid, 2 parts of 2-acetylamino-3-(4-biphenyl)acrylic acid, 1 part of (2E)-3-[3-(benzyloxy)phenyl]acrylic acid, 3-[ (4'-cyanobiphenyl-4-yl)oxy]propyl 2-acrylate 2 parts, glycidyl methacrylate 1 part, 2-butyloctyl methacrylate 2 parts, 1,9 - Add 2 parts of nonanediol diacrylate, 0.05 parts of benzocrown derivatives, 20 parts of deionized water, and 0.5 parts of emulsifier into the reaction kettle, and slowly raise the reaction temperature to 70°C under mechanical stirring. Add 15 parts of deionized water and 0.01 part of azobisisobutyronitri...