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Acrylate emulsion pressure-sensitive adhesive with high solid content and low viscosity and preparation method thereof

An acrylate, high solid content technology, applied in adhesive types, ester copolymer adhesives, etc., can solve the problems of increased viscosity, not too high viscosity, difficult synthesis, etc., to achieve low viscosity and good stability , the effect of less gel

Active Publication Date: 2015-02-25
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But when the solid content of the polymer emulsion exceeds 50%, the viscosity begins to rise sharply with the increase of the solid content, and the increase of the viscosity makes the mixing and heat transfer of the polymerization system a problem. Therefore, while synthesizing high solid content, the viscosity should not be too high. more difficult to synthesize

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The high-solid content and low-viscosity acrylate emulsion pressure-sensitive adhesive of the present invention is prepared by polymerizing the raw materials of each component in a reaction bottle, and its composition ratio is as follows in parts by weight:

[0035] 2-ethylhexyl acrylate 30

[0036] Butyl acrylate 30

[0037] Butyl methacrylate 1.5

[0038] Methyl methacrylate 0.5

[0039] 2-hydroxypropyl acrylate 0.35

[0040] Vinyl acetate 1.5

[0041] Acrylic 0.2

[0042] Triethylene glycol dimethacrylate 0.05

[0043] Anionic emulsifier EF810 0.2

[0044] Reactive emulsifier DNS-86 0

[0045] Ammonium persulfate 0.4

[0046] Ammonium bicarbonate 0.3

[0047] Deionized water 35

[0048] The preparation method of the high-solid-content low-viscosity acrylate emulsion pressure-sensitive adhesive of the present invention, the specific steps are as follows:

[0049] (1) Mix 53% ionized water, seven-eighths of emulsifier EF810, four-sevenths of ammonium persulf...

Embodiment 2

[0055] The high-solid content and low-viscosity acrylate emulsion pressure-sensitive adhesive of the present invention is prepared by polymerizing the raw materials of each component in a reaction bottle, and its composition ratio is as follows in parts by weight:

[0056] 2-Ethylhexyl Acrylate 34

[0057] Butyl acrylate 25

[0058] Butyl methacrylate 3

[0059] Methyl methacrylate 0.5

[0060] 2-hydroxypropyl acrylate 0.35

[0061] Vinyl acetate 1.25

[0062] Acrylic 0.15

[0063] Ethylene glycol dimethacrylate 0.05

[0064] Anionic emulsifier EF800 0.15

[0065] Reactive emulsifier DNS-86 0.05

[0066] Ammonium persulfate 0.55

[0067] Sodium bicarbonate 0.25

[0068] Deionized water 35

[0069] The preparation method of the high-solid-content low-viscosity acrylate emulsion pressure-sensitive adhesive of the present invention, the specific steps are as follows:

[0070](1) Mix 53% ionized water, seven-eighths of emulsifier EF800, four-sevenths of ammonium persulf...

Embodiment 3

[0076] The high-solid content and low-viscosity acrylate emulsion pressure-sensitive adhesive of the present invention is prepared by polymerizing the raw materials of each component in a reaction bottle, and its composition ratio is as follows in parts by weight:

[0077] 2-Ethylhexyl Acrylate 42

[0078] Butyl acrylate 16.2

[0079] Butyl methacrylate 3

[0080] 2-hydroxypropyl acrylate 0.35

[0081] Vinyl acetate 6

[0082] Acrylic 2.4

[0083] Ethylene glycol dimethacrylate 2

[0084] Anionic emulsifier EF810 0.1

[0085] Reactive emulsifier ANPEO-P 0.15

[0086] Ammonium persulfate 0.55

[0087] Sodium bicarbonate 0.25

[0088] Deionized water 28

[0089] The preparation method of the high-solid-content low-viscosity acrylate emulsion pressure-sensitive adhesive of the present invention, the specific steps are as follows:

[0090] (1) Mix 53% ionized water, seven-eighths of emulsifier EF810, four-sevenths of ammonium persulfate, half of sodium bicarbonate and al...

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Abstract

The invention provides an acrylate emulsion pressure-sensitive adhesive with a high solid content and low viscosity, and a preparation method thereof. The provided polyacrylate emulsion is prepared by synthesizing 2-ethylhexyl acrylate, butyl acrylate, vinyl acetate, methyl methacrylate, acrylic acid, 2-hydroxypropyl acrylate, vinyl acetate, carboxyl-containing functional monomers, and inter-crosslinked polyacrylate monomers through a pre-emulsifying semi-continuous polymerization technology. Compared to the prior, the provided adhesive has the characteristics of high solid content, which is not less than 65%, and low viscosity, which is less than 800 mPas at a temperature of 25 DEG C under a rotation speed of 60 rpm. The gel content of the adhesive is low, and the stability of the adhesive is good. The adhesive basically does not contain any nonyl phenol or contains very little nonyl phenol, is an environment-friendly acrylate emulsion pressure-sensitive adhesive, and can be used as a single-component pressure sensitive adhesive.

Description

technical field [0001] The invention belongs to pressure-sensitive adhesives, in particular to a high-solid-content, low-viscosity acrylate emulsion pressure-sensitive adhesive and a preparation method thereof. Background technique [0002] Since the latex pressure-sensitive adhesive uses water as the medium, the drying speed is slow, especially for some pressure-sensitive adhesive products with a large amount of glue, the drying problem is particularly prominent. Therefore, in the application of the emulsion pressure-sensitive adhesive, it is necessary to increase the solid content to solve the problem. Drying problem. [0003] High solid content latex pressure-sensitive adhesive can improve the utilization rate of production equipment, reduce transportation and storage costs, speed up the drying speed of latex, and reduce the gluing process to achieve the required thickness of the product. But when the solid content of the polymer emulsion exceeds 50%, the viscosity begin...

Claims

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Application Information

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IPC IPC(8): C09J133/08C08F220/18C08F220/14C08F220/28C08F218/08C08F220/06C08F222/14C08F2/26C08F2/30
Inventor 武鹏冯小平姜云刚何伟李胜华
Owner HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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