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Low-temperature self-crosslinking acrylate emulsion with core-shell structure as well as preparation method and application thereof

A core-shell structure and acrylate technology, which is applied in applications, household utensils, inks, etc., can solve the problems of poor anti-adhesion of plastic film inks, latex particles that do not use a core-shell structure, and cannot be thickened with alkali, etc., to achieve low cost , good hiding power, excellent anti-blocking effect

Inactive Publication Date: 2014-02-05
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no carboxylic acid monomer in the emulsion formula, the final emulsion cannot be thickened with alkali to adjust the viscosity, and the latex particles do not adopt a core-shell structure with different glass transition temperatures
A water-based printing ink binder disclosed in Chinese invention patent CN201210081822.8 is prepared by mixing two acrylate copolymer emulsions A and B with different glass transition temperatures in a certain proportion, and the final film-forming temperature is relatively high. Thin film inks have poor blocking resistance

Method used

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  • Low-temperature self-crosslinking acrylate emulsion with core-shell structure as well as preparation method and application thereof
  • Low-temperature self-crosslinking acrylate emulsion with core-shell structure as well as preparation method and application thereof
  • Low-temperature self-crosslinking acrylate emulsion with core-shell structure as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation steps are as follows:

[0030] Step 1, weigh 0.6g of sodium bicarbonate, 35g of deionized water, 0.8g of sodium dodecyl diphenyl ether disulfonate, and 0.4g of polyethylene glycol p-isooctylphenyl ether emulsifier and add it to a thermometer, In the reactor of the stirrer and the reflux condenser, stir at a rotation speed of 200rpm, and raise the temperature to 70°C;

[0031] Step 2, weigh 10g of methyl methacrylate, 2g of butyl acrylate, 0.3g of sodium dodecyl diphenyl ether disulfonate, 0.2g of polyethylene glycol p-isooctylphenyl ether, 8g of deionized water , disperse at 1000rpm for 15min to prepare pre-emulsified nuclear monomers; weigh 0.2g of initiator and 8g of deionized water to prepare nuclear initiating solution; keep the reaction temperature at 70-80°C at 200rpm, Add the pre-emulsified nuclear monomer and nuclear initiator solution dropwise, finish dropping within 30 minutes, and keep warm at 80°C for 40 minutes to obtain the nuclear layer e...

Embodiment 2

[0035] The preparation steps are as follows:

[0036] Step 1, weigh 0.6g sodium bicarbonate, 30g deionized water, 0.4g sodium dodecyl diphenyl ether disulfonate, 0.2g polyethylene glycol p-isooctyl phenyl ether and add to the , In the reactor of the reflux condenser, the rotating speed is 200rpm, and the temperature is raised to 70°C;

[0037]Step 2, weigh 10g of methyl methacrylate, 1.5g of butyl acrylate, 0.3g of sodium dodecyl diphenyl ether disulfonate, 0.2 of polyethylene glycol p-isooctylphenyl ether, 8g of deionized water , disperse at 1000rpm for 15min to prepare pre-emulsified nuclear monomers; weigh 0.2g of initiator and 8g of deionized water to prepare nuclear initiating solution; keep the reaction temperature at 70-80°C at 200rpm, Add the pre-emulsified nuclear monomer and nuclear initiator solution dropwise, finish dropping within 30 minutes, and keep warm at 80°C for 40 minutes to obtain the nuclear layer emulsion;

[0038] Step 3, weigh 15g methyl methacrylate...

Embodiment 3

[0041] The preparation steps are as follows:

[0042] Step 1, weigh 0.3g sodium bicarbonate, 30g deionized water, 0.4g sodium dodecylbenzenesulfonate, 0.2g polyethylene glycol p-isooctylphenyl ether and add it to the In the reactor of the reactor, the rotating speed is 200rpm, and the temperature is raised to 70°C;

[0043] Step 2, weigh 9g of methyl methacrylate, 2g of butyl acrylate, 0.2g of sodium dodecylbenzene sulfonate, 0.1g of polyethylene glycol p-isooctylphenyl ether, 2g of deionized water, at 1500rpm Disperse at a rotational speed for 15 minutes to obtain pre-emulsified nuclear monomers; weigh 0.1 g of initiator and 8 g of deionized water to prepare a nuclear initiating solution; keep the reaction temperature at 70 to 80° C. at a rotational speed of 250 rpm, and simultaneously add the The above-mentioned pre-emulsified nuclear monomer and nuclear initiator solution are dripped within 30 minutes, and are incubated at 80°C for 40 minutes to obtain the nuclear layer em...

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Abstract

The invention discloses a low temperature self-crosslinking acrylate emulsion with a core-shell structure as well as a preparation method and application thereof. The preparation method comprises the following steps: weighing the following materials in parts by weight: 30-40 parts of shell monomer, 0.8-1.2 parts of emulsifier and 7-14 parts of deionized water, and dispersing the materials to prepare a pre-emulsified shell monomer; weighing 0.2-0.5 parts of initiator and 10-18 parts of deionized water to prepare a shell initiator liquid, keeping temperature at 70-80 DEG C, simultaneously dropwise adding the pre-emulsified shell monomer and the shell initiator liquid into a core-layer emulsion within 2-3 hours so as to prepare a shell-layer emulsion, reacting at the constant temperature for 2-4 hours, cooling, and regulating the pH value. The acrylate emulsion prepared by the invention is environment-friendly, low in cost and simple in production process, and has the characteristics of self-crosslinking at a low temperature (40DEG C), high adhesion, good water tolerance, excellent anti-adhesion and the like; the emulsion can be used as a water-based ink binder so as to be compounded with a water-based color paste to obtain PP / PE (Propen Polymer / Poly Ethylene) film water-based ink.

Description

technical field [0001] The invention relates to an acrylate emulsion, in particular to a low-temperature self-crosslinking acrylate emulsion with a core-shell structure and a preparation method and application thereof, which are specifically applied to the preparation of low-polarity PE / PP film ink. Background technique [0002] Due to the low polarity of PE / PP film, the ink resin used is mainly solvent-based, which has many problems such as solvent volatilization, environmental pollution, and serious harm to workers' health. However, compared with solvent-based inks, the current water-based inks for PE / PP films still have a large gap in performance such as adhesion, wet friction resistance, and anti-sticking properties, and it is difficult to meet technical requirements. [0003] For example: Chinese invention patent CN201110220909.4 discloses a normal-temperature self-crosslinking silicone-modified acrylic emulsion, which adopts a hard-shell / soft-core core-shell latex part...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F222/02C08F220/58C08F220/06C08F2/26C08F2/30C09D11/10
Inventor 皮丕辉王卫宪文秀芳蔡智奇徐守萍程江
Owner SOUTH CHINA UNIV OF TECH
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