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Acrylate pressure-sensitive adhesive emulsion for PP film gum and use thereof and preparation method

A pressure-sensitive adhesive emulsion, acrylate technology, applied in the direction of ester copolymer adhesives, adhesive types, etc., can solve the problems of poor wettability, affecting product quality, high foaming rate, etc., to improve wettability , to ensure durability and mechanical properties, improve the effect of stability

Inactive Publication Date: 2017-06-13
WUXI HAITE NEW MATERIAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are some polyacrylate emulsion pressure-sensitive adhesives for PP film backing on the market, but the wettability is poor and the foaming rate is large, which greatly affects the quality of the product. The polyacrylate emulsion pressure-sensitive adhesive for PP film backing The ability of glue to wet the surface of the release paper has become an urgent problem to be solved

Method used

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  • Acrylate pressure-sensitive adhesive emulsion for PP film gum and use thereof and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh 0.2g anionic emulsifier containing double bond-containing reactive sulfonate, 0.6g nonionic emulsifier polyoxyethylene alkyl ether, 30g deionized water, stir at room temperature to obtain emulsifier aqueous solution; slowly add 40g butyl acrylate , 10g of isooctyl acrylate, 3g of hydroxyethyl acrylate, and 1.2g of acrylic acid, and stirred for 30 minutes at a stirring speed of 400 r / min to prepare pre-emulsion 1.

[0032] Weigh 0.1 g of ammonium persulfate, add 2.2 g of deionized water to dissolve, and prepare initiator aqueous solution 2. The initiator aqueous solution 2 was slowly added into the pre-emulsion 1 to obtain the pre-emulsion 3.

[0033] Weigh 0.2 g of ammonium persulfate, add 5 g of deionized water to dissolve, and prepare initiator aqueous solution 4.

[0034] Heat 11g deionized water to 80°C, slowly add 0.021g ammonium bicarbonate, 0.1g anionic emulsifier of reactive sulfonate containing double bond, 0.2g nonionic emulsifier polyoxyethylene alkyl ...

Embodiment 2

[0039] Weigh 0.2g anionic emulsifier containing double bond-containing reactive sulfonate, 0.6g nonionic emulsifier polyoxyethylene alkyl ether, 30g deionized water, stir at room temperature to obtain emulsifier aqueous solution; slowly add 40g butyl acrylate , 6g of isooctyl acrylate, 4g of methyl methacrylate, 3g of hydroxyethyl acrylate, and 1.2g of acrylic acid, and stirred for 30 minutes at a stirring speed of 400 r / min to prepare pre-emulsion 1.

[0040] Weigh 0.1 g of ammonium persulfate, add 2.2 g of deionized water to dissolve, and prepare initiator aqueous solution 2. The initiator aqueous solution 2 was slowly added into the pre-emulsion 1 to obtain the pre-emulsion 3.

[0041] Weigh 0.2 g of ammonium persulfate, add 5 g of deionized water to dissolve, and prepare initiator aqueous solution 4.

[0042] Heat 11g deionized water to 80°C, slowly add 0.021g ammonium bicarbonate, 0.1g anionic emulsifier of reactive sulfonate containing double bond, 0.2g nonionic emulsif...

Embodiment 3

[0047]Weigh 0.2g anionic emulsifier containing double bond-containing reactive sulfonate, 0.6g nonionic emulsifier polyoxyethylene alkyl ether, 30g deionized water, stir at room temperature to obtain emulsifier aqueous solution; slowly add 40g butyl acrylate , 8g of isooctyl acrylate, 3g of hydroxyethyl acrylate, 1.2g of acrylic acid, and 2g of N-methylolacrylamide were stirred for 30 minutes at a stirring speed of 400 r / min to prepare pre-emulsion 1.

[0048] Weigh 0.1 g of ammonium persulfate, add 2.2 g of deionized water to dissolve, and prepare initiator aqueous solution 2. The initiator aqueous solution 2 was slowly added into the pre-emulsion 1 to obtain the pre-emulsion 3.

[0049] Weigh 0.2 g of ammonium persulfate, add 5 g of deionized water to dissolve, and prepare initiator aqueous solution 4.

[0050] Heat 11g deionized water to 80°C, slowly add 0.021g ammonium bicarbonate, 0.1g anionic emulsifier of reactive sulfonate containing double bond, 0.2g nonionic emulsif...

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Abstract

The invention discloses an acrylate pressure-sensitive adhesive emulsion for PP film gum as wellas use and a preparation method the acrylate pressure-sensitive adhesive emulsion. The acrylate pressure-sensitive adhesive emulsion is prepared by adopting a pre-emulsification semi-continuous seed polymerization technology, adding a monomer to a water solution of a reactive emulsifier for pre-emulsification, initializing pre-emulsion polymerization reaction, finally adding assistants such as a defoaming agent, a wetting agent and a bactericide and stirring evenly. A pressure-sensitive adhesive coats the surface of a PET release film to be dried, and then is transferred to the back surface of a PP film; the thickness of the dry adhesive is 20 microns; the wettability is good; the adhesive surface is free of defects of bubbles and sinkholes; the release force reaches 7N / 25mm; and the durable viscosity is not lower than 24h.

Description

technical field [0001] The invention relates to the technical field of water-based pressure-sensitive adhesives, in particular to a polyacrylate emulsion pressure-sensitive adhesive for PP film back glue, and its use and preparation method. Background technique [0002] The polyacrylate pressure-sensitive adhesive used for the PP film back glue requires high mechanical properties and low surface tension of the emulsion, because in actual production, the coating needs to be coated on the release PET first, and then transferred to the back of the PP film, which requires the emulsion Excellent wetting properties. [0003] At present, the polyacrylate pressure-sensitive adhesive used for PP film back adhesive is mainly solvent-based acrylate, which has excellent comprehensive performance, but it contains a large amount of organic solvents such as toluene and ethyl acetate, and the coating amount is large. Affecting the health of operators, polluting the environment, and high co...

Claims

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Application Information

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IPC IPC(8): C09J133/08C08F220/18C08F220/28C08F220/06C08F220/14C08F220/58C08F2/26C08F2/30
CPCC08F2/26C08F2/30C08F220/18C08F220/1804C08F220/1808C09J133/08C08F220/281C08F220/06C08F220/58C08F220/14
Inventor 李卫东卫晓波白永平王宇席丹殷晓芬
Owner WUXI HAITE NEW MATERIAL RES INST
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