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Aqueous sealing adhesive emulsion and preparation method thereof

A sealing glue, water-based technology, applied in the direction of adhesive types, ester copolymer adhesives, etc., can solve the problems of enterprise loss, water-based sealing glue bonding strength, poor high temperature and low temperature resistance, easy degumming, etc. Achieve the effect of high initial viscosity, good frost resistance and high bond strength

Active Publication Date: 2018-05-15
BAODING SUNSHINE CHEM IND RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many existing water-based sealing adhesives on the market are easy to degumming in high-temperature or low-temperature environments after use, causing losses to enterprises. Difference

Method used

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  • Aqueous sealing adhesive emulsion and preparation method thereof
  • Aqueous sealing adhesive emulsion and preparation method thereof
  • Aqueous sealing adhesive emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) Weighing of raw materials:

[0027]

[0028]

[0029] 2) Preparation process:

[0030] Dissolve 0.5kg of initiator in 5kg of water to obtain initial initiator; dissolve 2.5kg of initiator in 45kg of water to obtain drip initiator; dissolve 0.2kg of initiator in 5kg of water to obtain post-initiator; Sodium hydrogen is dissolved in 10kg of water to obtain a reducing agent.

[0031] Mix and stir 310kg of butyl acrylate, 240kg of vinyl acetate, 15kg of 2-hydroxyethyl acrylate, 1kg of acrylic acid, and 1.2kg of n-dodecyl mercaptan to obtain a mixed monomer.

[0032] Add 420kg of water and 17.5kg of polyvinyl alcohol into the reactor, start stirring, raise the temperature to 92°C, stir and disperse the polyvinyl alcohol until it is completely dissolved.

[0033] Lower the temperature, keep the temperature between 75 and 80°C, add 2.2kg of sodium bicarbonate, 18kg of emulsifier and initial initiator in sequence, then add the mixed monomer and initiator dropwise at ...

Embodiment 2

[0038] 1) Weighing of raw materials:

[0039]

[0040] 2) Preparation process:

[0041] Dissolve 0.5kg of initiator in 5kg of water to obtain initial initiator; dissolve 2.5kg of initiator in 45kg of water to obtain drip initiator; dissolve 0.2kg of initiator in 5kg of water to obtain post-initiator; Sodium hydrogen is dissolved in 10kg of water to obtain a reducing agent.

[0042] Mix and stir 400 kg butyl acrylate, 150 kg vinyl acetate, 15 kg 2-hydroxyethyl acrylate, 1 kg acrylic acid, and 1.2 kg n-dodecyl mercaptan to obtain a mixed monomer.

[0043] Add 420kg of water and 17.5kg of polyvinyl alcohol into the reactor, start stirring, raise the temperature to 92°C, stir and disperse the polyvinyl alcohol until it is completely dissolved.

[0044] Lower the temperature, keep the temperature between 75 and 80°C, add 2.2kg of sodium bicarbonate, 18kg of emulsifier and initial initiator in sequence, then add the mixed monomer and initiator dropwise at a constant speed for 6...

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Abstract

The invention discloses an aqueous sealing adhesive emulsion and a preparation method thereof and belongs to the technical field of adhesives. An aqueous sealing adhesive prepared by the emulsion is high in adhesion strength, high in heat resistance and excellent in freezing resistance. The aqueous sealing adhesive emulsion is prepared from the following components in parts by weight: 15-20 partsof polyvinyl alcohol, 2-3 parts of sodium hydrogen carbonate, 15-20 parts of an emulgator, 3-4 parts of an initiator, 300-500 parts of butyl acrylate, 100-300 parts of vinyl acetate, 10-20 parts of acrylic acid-2-hydroxy ethyl ester, 1-2 parts of acrylic acid, 1-2 parts of N-dodecyl mercaptan, 0.5-1 part of sodium hydrogen sulfite, 0.5-1 part of a defoaming agent, 2-3 parts of an anticorrosion agent and 450-500 parts of deionized water. The aqueous sealing adhesive prepared by the aqueous sealing adhesive emulsion can be effectively applied to edge sealing or opening lapping of BOPP / paper, polishing / paper, PET / paper, paper / paper, ink / paper and UV polishing / paper.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to an emulsion used in water-based sealing adhesives and a preparation method thereof. Background technique [0002] Sealing glue is a kind of adhesive widely used in the packaging industry, and it is used for the edge sealing interface of cartons, cartons and handbags. There are two main types of sealing glue: oil-based sealing glue and water-based sealing glue. Oil-based sealants generally use toluene as solvents, and SBS, terpene resins, and rosin as main raw materials, which are harmful to the environment and human health. Water-based sealing glue is an environmentally friendly adhesive with water as the dispersion medium. It is non-toxic and pollution-free, and is gradually replacing oil-based sealing glue. Many existing water-based sealing adhesives on the market are easy to degumming in high-temperature or low-temperature environments after use, causing losses...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F218/08C08F220/20C08F220/06C09J133/08
CPCC08F220/18C09J133/08C08F220/1804C08F218/08C08F220/20C08F220/06
Inventor 郑军刘毅张士军
Owner BAODING SUNSHINE CHEM IND RES INST
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