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Composition and preparation method of a water-based aluminum foil adhesive with high peel strength and controllable viscosity

A high peeling, aluminum foil adhesive technology, applied in the direction of adhesive types, ester copolymer adhesives, unsaturated alcohol copolymer adhesives, etc., can solve the problem that the viscosity cannot be adjusted within a certain range, high cost, anti-freeze Problems such as poor performance, to achieve the effect of convenience for customers to use on the machine, simple production cleaning, and enhanced cohesion

Active Publication Date: 2016-06-22
CHANGZHOU INST OF CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some deficiencies in polyvinyl acetate emulsion adhesives, such as poor water resistance, poor abrasion resistance, and poor frost resistance.
Water-based aluminum foil glue still has two more difficult problems to solve. One is that the peel strength of the current aluminum foil glue of the vinegar-acrylic series is not high, which makes it difficult to be applied to higher-grade tobacco and alcohol packaging. Another problem is that the current The aluminum foil glue in the market is milky white, not delicate, and has a high viscosity, which is not conducive to roller coating on the machine
[0003] Chinese patent CN101676352A discloses an aluminum foil adhesive and its preparation method. Its emulsion belongs to styrene-acrylic emulsion and has strong peel strength. However, due to its high solid content and high cost, it is not competitive in the market, and its viscosity is also unsatisfactory. Adjust within a certain range
[0004] Chinese patent CN1021539971A discloses an aluminum foil adhesive and its preparation method. Its emulsion belongs to the category of vinegar-acrylic emulsion, and its peel strength is not high. At the same time, it contains injection molding agent phthalates, which is not conducive to environmental protection.
[0006] The invention adopts the improvement of the copolymerization performance of styrene-acrylic emulsion to obtain a water-based aluminum foil adhesive with low solid content, which successfully solves the problems of low peel strength, adjustable viscosity and high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1 (unit gram):

[0035] The formula is as follows:

[0036] Styrene 24, butyl acrylate 76.6, isooctyl acrylate 13.33, acrylic acid 6, deionized water 190, sodium lauryl sulfate 3, nonylphenol polyoxyethylene ether 1, ammonium persulfate 0.48, PVA-178820, ammonia water 2. Potassium bicarbonate 0.5.

[0037] Place the four-neck flask equipped with a stirrer, reflux condenser, thermometer and dropping funnel in a temperature-controllable heating mantle, add metered distilled water, dispersed emulsifier sodium lauryl sulfate and nonylphenol polysaccharide Oxyethylene ether, buffer potassium bicarbonate, and initiator ammonium persulfate are stirred at a high speed at room temperature to fully dissolve. Then add monomer molecule styrene, butyl acrylate, isooctyl acrylate, acrylic acid, and emulsify for 30 minutes. After the emulsification is over, raise the temperature of the reaction flask to 82°C, add 10% pre-emulsified solution, and after the seeds have poly...

Embodiment 2

[0040] Embodiment 2 (unit gram):

[0041] The formula is as follows

[0042] Styrene 30, butyl acrylate 66, isooctyl acrylate 15, acrylic acid 4, deionized water 190, sodium lauryl sulfate 3, nonylphenol polyoxyethylene ether 1, ammonium persulfate 0.48, PVA-178820, ammonia water 2. Potassium bicarbonate 0.5.

[0043] Place the four-neck flask equipped with a stirrer, reflux condenser, thermometer and dropping funnel in a temperature-controllable heating mantle, add metered distilled water, dispersed emulsifier sodium lauryl sulfate and nonylphenol polysaccharide The solution of oxyethylene ether, buffer potassium bicarbonate and initiator ammonium persulfate is stirred at a high speed at room temperature to fully dissolve it. Then add monomer butyl acrylate, isooctyl acrylate, acrylic acid, and emulsify for 30 minutes. After the emulsification is over, raise the temperature of the reaction flask to 82°C, add 15% mass of pre-emulsified solution, after the seed polymerizatio...

Embodiment 3

[0046] Embodiment 3 (unit gram):

[0047] Styrene 24, butyl acrylate 76.6, isooctyl acrylate 13.33, ethyl acrylate 2, acrylic acid 4, deionized water 190, sodium lauryl sulfate 3, nonylphenol polyoxyethylene ether 1 ammonium persulfate 0.48, F -31620, ammonia water 2, ammonium bicarbonate 0.5.

[0048] Place the four-neck flask equipped with a stirrer, reflux condenser, thermometer and dropping funnel in a temperature-controllable heating mantle, add metered distilled water, dispersed emulsifier sodium lauryl sulfate and nonylphenol polysaccharide Oxyethylene ether, buffer ammonium bicarbonate, initiator ammonium persulfate solution are stirred at a high speed at room temperature to fully dissolve. Then add monomer butyl acrylate, isooctyl acrylate, ethyl acrylate, acrylic acid, and emulsify for 30 minutes. After the emulsification is completed, raise the temperature of the reaction flask to 82°C, add part of the pre-emulsified solution, after the seed polymerization for a c...

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Abstract

The invention discloses a water-based aluminium foil glue composition with high peel strength and controllable viscosity and a preparation method. The water-based aluminium foil glue is formed by compounding water-based styrene-acrylic emulsion and dispersion liquid of polyvinyl alcohol. The peel strength can be as high as 12N / (25mm), and the viscosity (100-30000mpa.s) is controllable. The water-based aluminium foil glue comprises the following components: 15-25% of soft monomers, 10-20% of hard monomers, 1-5% of functional monomers, 0.2-0.8% of initiator, 1-4% of emulsifiers, 0.2-1% of PH buffer agent, 1-4% of PH agent, 50-80% of softened water and 5-30% of polyvinyl alcohol dispersion. The glue has strong blue light, excellent bonding capacity and controllable viscosity, is environment-friendly, is relatively low in cost, is easy to dry, has freezing resistance and does not contain plasticizers or harmful substances.

Description

technical field [0001] The invention relates to a water-based aluminum foil glue with low solid content, which has high peel strength, good blue light effect and controllable viscosity. In particular, it relates to the composition and preparation method of the glue. Background technique [0002] As people's awareness of environmental protection becomes stronger and stronger, water-based adhesives have become an important trend in the development of adhesives compared to oil-based adhesives. The product that has an absolute advantage in water-based adhesives is emulsion adhesives, and polyvinyl acetate emulsion adhesives are one of the main varieties. However, there are still some deficiencies in polyvinyl acetate emulsion adhesives, such as poor water resistance, poor abrasion resistance, and poor frost resistance. Water-based aluminum foil glue still has two more difficult problems to solve. One is that the peel strength of the current aluminum foil glue of the vinegar-ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/08C09J129/04C08F220/18C08F212/08C08F220/06C08F2/30C08F2/26
Inventor 胥元峰蒋银峰王红丹王公应
Owner CHANGZHOU INST OF CHEM
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