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Rosin derivative/polyacrylate composite mini-emulsion pressure-sensitive adhesive and preparation method thereof

A technology of rosin derivatives and polyacrylates, which is applied in the direction of rosin adhesives, ester copolymer adhesives, adhesive types, etc., can solve problems such as poor adhesive performance, and achieve comprehensive adhesive performance improvement and molecular weight The effect of variable distribution and wide molecular weight distribution

Inactive Publication Date: 2017-01-04
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantages of the poor bonding performance of the current polyacrylate emulsion pressure-sensitive adhesive, and provide a rosin-derived compound with wide molecular weight distribution of latex particles and excellent comprehensive bonding properties of initial tack, holding power and peel strength. Preparation method of polymer / polyacrylate composite emulsion pressure-sensitive adhesive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] At room temperature, mix 45g of butyl acrylate, 40g of isooctyl acrylate, 10g of methyl methacrylate, 5g of methacrylic acid, 1g of allyloxy nonylphenol polyoxyethylene (10) ether ammonium sulfate (Qingxin County Hanke Chemical Technology Co., Ltd.) and 1g octadecyl methacrylate (Shanghai Ziyi Reagent Factory) were added to 80g deionized water, stirred at a speed of 3000rpm for 10min, and then ultrasonically dispersed for 10min (ultrasonic frequency 20kHz, power 300W), to obtain Pre-emulsion I; 10g of hydrogenated rosin (Guangxi Wuzhou Richeng Forestry Chemical Co., Ltd.) was dissolved in an acrylate mixing unit composed of 45g butyl acrylate, 45g isooctyl acrylate, 8g methyl methacrylate, and 2g methacrylic acid. Then add 1g of allyloxy nonylphenol polyoxyethylene (10) ether ammonium sulfate and 1g of octadecyl methacrylate to 80g of deionized water, stir at 3000rpm for 15min, and then ultrasonically disperse for 15min (ultrasonic frequency 20kHz, power 300W), to obtai...

Embodiment 2

[0030] At room temperature, add 30 g of butyl acrylate, 50 g of isooctyl acrylate, 15 g of methyl methacrylate, 3 g of methacrylic acid, 5 g of sodium lauryl sulfate and 0.5 g of hexadecane into 120 g of deionized water at 2500 rpm Stir at a high speed for 30min, then ultrasonically disperse for 15min (ultrasonic frequency 25kHz, power 300W) to obtain pre-emulsion I; Octyl ester, 5g methyl methacrylate, 1g methacrylic acid ester mixed monomer, then add 3g sodium lauryl sulfate and 0.5g hexadecane to 60g deionized water respectively, at the speed of 2500rpm Stir for 30 minutes, then ultrasonically disperse for 10 minutes (ultrasonic frequency 40kHz, power 400W), to obtain pre-emulsion II. Raise the temperature of the pre-emulsion I to 80°C, add an aqueous solution containing 1g of ammonium persulfate and 3g of deionized water, react for 1h, then add the pre-emulsion II dropwise within 0.5h, continue to heat up to 90°C, and react for 2h, Cool down to room temperature and adjust...

Embodiment 3

[0032]At room temperature, 50 g of butyl acrylate, 50 g of isooctyl acrylate, 15 g of methyl methacrylate, 5 g of methacrylic acid, 5 g of sodium dodecylbenzenesulfonate, and 5 g of cetyl alcohol were added to 120 g of deionized water to Stir at a speed of 3500rpm for 30min, then ultrasonically disperse for 30min (ultrasonic frequency 30kHz, power 300W) to obtain pre-emulsion I; Octyl ester, 10g methyl methacrylate, 5g methacrylic acid ester mixed monomer, then add 3g sodium dodecylbenzenesulfonate and 3g cetyl alcohol to 110g deionized water respectively, at 3500rpm Stir at a high speed for 30 minutes, and then ultrasonically disperse for 30 minutes (ultrasonic frequency 20 kHz, power 200 W) to obtain pre-emulsion II. Raise the temperature of the pre-emulsion I to 60°C, add an aqueous solution containing 2g of potassium persulfate and 5g of deionized water, react for 3h, then add the pre-emulsion II dropwise within 1.5h, continue to heat up to 80°C, and react for 3h, Cool do...

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PUM

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Abstract

The invention discloses a rosin derivative / polyacrylate composite miniemulsion pressure-sensitive adhesive and a preparation method thereof. The preparation method comprises the following steps: carrying out pre-emulsification on an acrylate monomer, an emulsifier, a co-emulsifier and water, so as to obtain a pre-emulsified liquid I; dissolving a rosin derivative into the acrylate monomer, and carrying out pre-emulsification together with the emulsifier, the co-emulsifier and water, so as to obtain a pre-emulsified liquid II; carrying out free radical polymerization on the pre-emulsified liquid I under the action of an initiator; and adding the pre-emulsified liquid II, and polymerizing, so as to obtain the rosin derivative / polyacrylate composite miniemulsion pressure-sensitive adhesive. The rosin derivative / polyacrylate composite miniemulsion pressure-sensitive adhesive is prepared by adopting a two-step miniemulsion polymerization method, is wide in molecular weight distribution, and has good adhesive property.

Description

technical field [0001] The invention relates to a polyacrylate emulsion pressure-sensitive adhesive, in particular to a rosin derivative / polyacrylate composite fine emulsion pressure-sensitive adhesive and a preparation method thereof. [0002] technical background [0003] In recent years, polyacrylate emulsion pressure-sensitive adhesives have been widely used in many fields such as construction, electronic appliances, automobiles, packaging, and daily life due to their advantages of no pollution, low cost, and easy adjustment of viscosity. However, compared with traditional solvent-based polyacrylate pressure-sensitive adhesives, polyacrylate emulsion pressure-sensitive adhesives have lower bonding performance and poor water resistance, which limits the expansion of its application range to a certain extent. [0004] Although the use of reactive emulsifiers instead of ordinary small molecule emulsifiers can significantly improve the water resistance of polyacrylate emulsio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/18C08F220/14C08F220/06C08F2/26C08F2/30C09J133/08C09J193/04
Inventor 李红强曾幸荣赖学军任晓康
Owner SOUTH CHINA UNIV OF TECH