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Low-temperature-resistant acrylic pressure-sensitive adhesive as well as preparation method and application thereof

A technology of pressure-sensitive adhesives and low temperature resistance, applied in the direction of pressure-sensitive films/sheets, adhesives, adhesive types, etc., can solve the problems of acrylic pressure-sensitive adhesives that cannot be bonded, and achieve the effect of improving the holding force

Inactive Publication Date: 2020-12-29
KUNSHAN SUMEI FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the purposes of the present invention is to: mainly use the characteristics that esterified polyfunctional polyether has good adhesion under low temperature conditions, does not participate in the reaction with the curing agent in the glue, and does not affect the crosslinking density to solve the problem of the prior art. The problem that medium acrylic pressure-sensitive adhesives cannot be bonded under low temperature conditions

Method used

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  • Low-temperature-resistant acrylic pressure-sensitive adhesive as well as preparation method and application thereof
  • Low-temperature-resistant acrylic pressure-sensitive adhesive as well as preparation method and application thereof
  • Low-temperature-resistant acrylic pressure-sensitive adhesive as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Low temperature resistant acrylate pressure sensitive adhesive, including the following raw materials in parts by weight: 5 parts of acrylic acid, 2-EHA: 60 parts, 25 parts of butyl acrylate, hydroxyethyl methacrylate (HEMA): 0.1 part, catalyst benzoyl oxidation (BPO): 0.75 part, tackifying resin 5 parts, esterified polyfunctional polyether 1 part, ethyl acetate 100 parts.

[0032] The preparation method of the low-temperature-resistant acrylate pressure-sensitive adhesive: comprising the following steps:

[0033] 1. Configure mixed monomers in proportion: 0.1 parts of hydroxyethyl methacrylate (HEMA), 5 parts of acrylic acid, 60 parts of isooctyl acrylate (2-EHA), 25 parts of butyl acrylate, at a temperature of 64-64.5 °C Mix evenly;

[0034] 2. Add 30% mixed monomer and 100 parts of ethyl acetate into the reaction pot, feed N2 and heat up to 78-78.5 degrees;

[0035] 3. Add 0.15 parts of benzoyl peroxide (BPO) into the reaction pot to initiate the reaction. After 40...

Embodiment 2

[0042] Low temperature resistant acrylate pressure sensitive adhesive, including the following raw materials in parts by weight: hydroxyethyl methacrylate (HEMA): 0.15 parts, acrylic acid 5 parts, lauryl acrylate (LA) 60 parts, butyl acrylate 25 parts, catalyst : 0.8 parts of azobisisobutyronitrile (AIBN), 10 parts of tackifying resin, 1.5 parts of esterified polyfunctional polyether, 50 parts of ethyl acetate as solvent, and 60 parts of toluene.

[0043] The preparation method of the low-temperature-resistant acrylate pressure-sensitive adhesive: comprising the following steps:

[0044] 1. Configure mixed monomers according to the proportion: 0.15 parts of hydroxyethyl methacrylate (HEMA), 5 parts of acrylic acid, 60 parts of lauryl acrylate (LA), 25 parts of butyl acrylate, and mix evenly at a temperature of 64-64.5 °C ;

[0045] 2. Add part of mixed monomers, 50 parts of ethyl acetate and 60 parts of toluene into the reaction pot, feed N2 and raise the temperature to 70-70...

Embodiment 3

[0053] Low-temperature-resistant acrylate pressure-sensitive adhesive, including the following raw materials in parts by weight: 0.25 parts of hydroxyethyl methacrylate (HEMA), 4 parts of acrylic acid, 60 parts of isooctyl acrylate (2-EHA), and butyl acrylate: 20 parts, hydroxyethyl methacrylate (HEMA): 0.25 parts, catalyst azobisisobutyronitrile (AIBN) 0.8 parts, tackifying resin 13 parts, esterified polyfunctional polyether 2 parts, ethyl acetate solvent 100 parts .

[0054] The preparation method of the low-temperature-resistant acrylate pressure-sensitive adhesive: comprising the following steps:

[0055] 1. Prepare mixed monomers in proportion: 0.25 parts of hydroxyethyl methacrylate (HEMA), 4 parts of acrylic acid, 60 parts of isooctyl acrylate (2-EHA), 20 parts of butyl acrylate, and mix well.

[0056] 2. Add part of the mixed monomers and 100 parts of ethyl acetate into the reaction pot, feed N2 and raise the temperature to 70-70.5 degrees.

[0057] 3. Add 0.2 parts ...

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Abstract

The invention provides a low-temperature-resistant acrylic pressure-sensitive adhesive as well as a preparation method and application thereof, and the low-temperature-resistant acrylic pressure-sensitive adhesive comprises the following components in parts by weight: 4-6 parts of acrylic acid, 55-65 parts of main reaction monomer, 20-25 parts of butyl acrylate, 0.1-0.25 part of hydroxyethyl acrylate, 0.1-1 part of catalyst, 5-13 parts of tackifying resin, 1-3 parts of esterified multifunctional polyether and 100-120 parts of solvent. The acrylic pressure-sensitive adhesive prepared from the components according to the preparation method provided by the invention has the advantages that the basic stripping force, the initial adhesion force and the permanent adhesion force at low temperature are improved, the high-temperature retention force is not lost, and the acrylic pressure-sensitive adhesive is suitable for being used in a low-temperature environment. In addition, the acrylic pressure-sensitive adhesive, a curing agent and a solvent are smeared on an adhesive tape according to a certain ratio, so that the adhesive tape can be made into advertisement vehicle body stickers, outdoor labels and the like suitable for low-temperature environments.

Description

technical field [0001] The invention relates to the technical field of acrylic pressure-sensitive adhesives, in particular to a low-temperature resistant acrylic pressure-sensitive adhesive and its preparation method and application. Background technique [0002] Acrylic pressure-sensitive adhesives have very good viscosity at room temperature, for example, the initial viscosity is around 9-11 balls, but at minus 5°C to minus 10°C, the initial tack is only around No. 3 balls. The climate in northern my country is very cold in winter, and the temperature is far below minus 10°C. Under such low temperature conditions, the molecular movement of acrylic pressure-sensitive adhesives is slow, and it is difficult to quickly infiltrate the surface of attachments and achieve bonding. At the same time, the modulus of acrylic pressure-sensitive adhesives increases. Large, when the same pressure is applied, the deformation of the adhesive is small, and the effective contact area is small...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J11/08C09J7/38C08F220/18C08F220/20C08F220/06
CPCC08F220/18C08L2205/03C09J11/08C09J133/066C09J2433/00C09J7/38C08L101/00C08L71/00
Inventor 张红侠黄俊达汪晶晶
Owner KUNSHAN SUMEI FINE CHEM CO LTD