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Acrylic emulsion with self-wetting effect and emulsion type pressure-sensitive adhesive containing acrylic emulsion

An acrylic emulsion, self-wetting technology, applied in pressure-sensitive films/sheets, adhesives, adhesive types, etc., can solve the problems of high emulsion viscosity, easy to produce slag, large dosage, etc., to achieve good wetting performance, The effect of stable emulsion polymerization process and low preparation cost

Active Publication Date: 2019-10-08
广州化工研究设计院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of reactive emulsifiers can only solve the problem of stable performance, and the large amount of reactive emulsifiers will result in high viscosity emulsions and easy to produce scum, which still cannot meet the needs well.

Method used

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  • Acrylic emulsion with self-wetting effect and emulsion type pressure-sensitive adhesive containing acrylic emulsion
  • Acrylic emulsion with self-wetting effect and emulsion type pressure-sensitive adhesive containing acrylic emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A kind of acrylic acid emulsion with self-wetting effect, its preparation method comprises the following steps:

[0053] 1) Stir and disperse 1.5g of allyloxynonylphenol polyoxyethylene (10) ether ammonium sulfate and 0.5g of ammonium persulfate with 50g of deionized water, then add 80g of butyl acrylate, 10g of methyl methacrylate, 3g Acrylic acid, 5g hydroxypropyl acrylate and 2g divinylbenzene, fully stirred and mixed to obtain a pre-emulsion;

[0054] 2) Stir and disperse 0.2 g of ammonium persulfate and 2 g of deionized water to obtain an initiator solution;

[0055] 3) Stir and disperse 0.3g sodium bicarbonate and 0.5g nonylphenol polyoxyethylene ether ammonium sulfate with 50g deionized water, then add 3.2g butyl acrylate, 0.4g methyl methacrylate, 0.12g acrylic acid, 0.2g Hydroxypropyl acrylate and 0.08g of divinylbenzene were fully stirred and mixed, and then heated to 80°C, and the initiator solution in step 2) was added, and after the blue light appeared, th...

Embodiment 2

[0060] A kind of acrylic acid emulsion with self-wetting effect, its preparation method comprises the following steps:

[0061] 1) Stir and disperse 2g of allyloxynonylphenol polyoxyethylene (10) ether ammonium sulfate and 0.5g of ammonium persulfate with 50g of deionized water, then add 75g of isooctyl acrylate, 19g of butyl methacrylate, 3g Methacrylic acid, 3g hydroxypropyl acrylate and 5g divinylbenzene, fully stirred and mixed to obtain a pre-emulsion;

[0062] 2) Stir and disperse 0.2 g of ammonium persulfate and 2 g of deionized water to obtain an initiator solution;

[0063] 3) Stir and disperse 0.23g sodium bicarbonate and 0.5g sodium dodecyl diphenyl ether disulfonate with 45g deionized water, then add 3.75g isooctyl acrylate, 0.95g butyl methacrylate, 0.15g formazan Acrylic acid, 0.15g hydroxypropyl acrylate and 0.25g divinylbenzene, fully stirred and mixed, then heated to 80 ° C, added the initiator solution of step 2), and kept warm for 30 minutes after the blue ...

Embodiment 3

[0068] A kind of acrylic acid emulsion with self-wetting effect, its preparation method comprises the following steps:

[0069] 1) Stir and disperse 2.5g of allyloxynonylphenol polyoxyethylene (10) ether ammonium sulfate and 0.4g of ammonium persulfate with 50g of deionized water, then add 90g of isooctyl acrylate, 5g of styrene, and 2g of acrylamide , 2g hydroxyethyl methacrylate and 2g diacetone acrylamide, fully stirred and mixed to obtain a pre-emulsion;

[0070] 2) Stir and disperse 0.2 g of ammonium persulfate and 2 g of deionized water to obtain an initiator solution;

[0071] 3) Stir and disperse 0.23g sodium bicarbonate and 0.5g sodium dodecyl diphenyl ether disulfonate with 50g deionized water, then add 5.4g isooctyl acrylate, 0.3g styrene, 0.12g acrylamide, 0.12 1 g of hydroxyethyl methacrylate and 0.12 g of diacetone acrylamide, fully stirred and mixed, then heated up to 80°C, added the initiator solution in step 2), and kept warm for 30 minutes after the blue lig...

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PUM

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Abstract

The invention discloses an acrylic emulsion with a self-wetting effect and an emulsion type pressure-sensitive adhesive containing the acrylic emulsion. The acrylic emulsion is prepared from a soft monomer, a hard monomer, a functional monomer, an internal crosslinking monomer, an external crosslinking monomer, a reactive emulsifier, a non-reactive anionic emulsifier, an initiator, a pH buffer agent and water. The acrylic emulsion and the emulsion type pressure-sensitive adhesive containing the emulsion have a good self-wetting effect, auxiliaries such as a wetting agent and a leveling agent do not need to be added, the coating leveling effect of the emulsion type pressure-sensitive adhesive is improved, and the pressure-sensitive adhesive tape prepared from the acrylic emulsion not only has high initial adhesion, high holding adhesion and high 180-degree peel strength, but also has good high-temperature resistance, and is suitable for large-scale production and application.

Description

technical field [0001] The invention relates to an acrylic emulsion with self-wetting effect and an emulsion-type pressure-sensitive adhesive containing the emulsion. Background technique [0002] Emulsifiers play a vital role in the emulsion polymerization process and emulsion stability, but they usually have adverse effects during the use of emulsions. For example, during the drying and film formation of emulsion polymers, small molecule emulsifiers will The sedimentation of the polymer gradually migrates to the interface between the polymer and the air, resulting in a decrease in the bonding performance and water resistance of the polymer. Moreover, due to the difference in the type and amount of the emulsifier, it will also affect the coating effect of the emulsion, causing problems such as coating shrinkage, lines, and foaming. In order to solve this problem, the commonly used method is to add additives such as wetting agents, leveling agents, and defoamers. Although i...

Claims

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Application Information

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IPC IPC(8): C08F283/06C08F220/18C08F220/14C08F220/06C08F220/20C08F212/36C08F212/08C08F220/56C08F220/58C08F2/26C09J151/08C09J133/14C09J7/38C09J7/21
CPCC08F283/065C08F2/26C08F220/18C09J151/08C09J133/068C09J7/385C09J7/21C09J2400/283C09J2301/122C09J2301/302C08F220/1804C08F220/14C08F220/06C08F220/20C08F212/36C08F212/08C08F220/56C08F220/58
Inventor 孙华伟陈淼
Owner 广州化工研究设计院有限公司
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