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Water-based water-scrubbing-resistant acrylic emulsion and preparation method thereof

An acrylic emulsion and acrylic technology, applied in the coating and other directions, can solve the problems of the coating being easily scratched, the production is unsafe, the environmental protection and hygiene are poor, etc., and the effect of improving the water scrub resistance, low cost and low VOC of the emulsion can be achieved.

Active Publication Date: 2015-04-29
SHANGHAI WEIKAI CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Paper and film materials need to be coated with a layer of protective material after surface printing for waterproof and protective functions. At present, oil-based paints are mainly used in the industry, and oil-based paints contain toxic solvents such as toluene and methyl ethyl ketone. , unsafe production, poor environmental sanitation
The present invention uses water-based acrylic paint instead of oil-based paint for surface coating, but since water-based paint uses water as the dispersion medium, common acrylic emulsions are more sensitive to water, and the coating is easily wiped off during transportation and production in wet weather. bad, affect the appearance

Method used

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  • Water-based water-scrubbing-resistant acrylic emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of preparation method of water-based anti-water scrubbing acrylic emulsion that the present embodiment relates to, comprises the steps:

[0024] 1. Add 15 parts of deionized water, 2 parts of emulsifier, 1 part of methacrylic acid, 17 parts of butyl acrylate, 15 parts of methyl methacrylate, 10 parts of octadecyl acrylate, and 2 parts of hydroxyethyl acrylate into In the mixing tank, stir for more than 30 minutes to obtain the pre-emulsion, and set aside;

[0025] 2. Add 31 parts of deionized water into the reaction kettle, raise the temperature, and control the temperature at 78-82 ° C; add 0.1 parts of potassium persulfate and 5 parts of the prepared pre-emulsion, and keep it warm for 30 minutes after the emulsion turns blue. Add the remaining pre-emulsion and the initiator solution prepared by 0.9 parts of potassium persulfate and 5 parts of deionized water dropwise, and control the addition of the pre-emulsion and the initiator solution within 2 to 5 hours. A...

Embodiment 2

[0028] A kind of preparation method of water-based anti-water scrubbing acrylic emulsion that the present embodiment relates to, comprises the steps:

[0029] 1. Mix 15 parts of deionized water, 0.1 part of emulsifier, 9 parts of methacrylic acid, 10 parts of ethyl acrylate, 10 parts of methyl methacrylate, 20 parts of octadecyl methacrylate, 1 part of hydroxyethyl acrylate, Add to the mixing tank and stir for more than 30 minutes to prepare the pre-emulsion, set aside;

[0030] 2. Add 24 parts of deionized water into the reaction kettle, raise the temperature, and control the temperature at 78-82°C. Add 0.001 part of ammonium persulfate and 6 parts of the prepared pre-emulsion. After the emulsion turns blue, keep warm for 30 minutes. At the same time, drop the remaining pre-emulsion and the initiator solution prepared by 0.009 part of potassium persulfate and 5 parts of deionized water. , control the dropwise addition of the pre-emulsion and the initiator solution within 2 t...

Embodiment 3

[0033] A kind of preparation method of water-based anti-water scrubbing acrylic emulsion that the present embodiment relates to, comprises the steps:

[0034] 1. Mix 30 parts of deionized water, 10 parts of emulsifier, 0.5 parts of methacrylic acid, 40 parts of isooctyl acrylate, 10 parts of methyl methacrylate, 1 part of lauryl methacrylate, and 0.5 parts of hydroxypropyl acrylate , added to the mixing tank and stirred for more than 30 minutes to prepare the pre-emulsion, set aside;

[0035] 2. Add 20 parts of deionized water into the reaction kettle, raise the temperature, and control the temperature at 78-82°C; add 0.02 parts of potassium persulfate and 5 parts of the prepared pre-emulsion, and keep it warm for 30 minutes after the emulsion turns blue. Add the remaining pre-emulsion and the initiator solution prepared by 0.08 parts of potassium persulfate and 10 parts of deionized water dropwise, and control the addition of the pre-emulsion and the initiator solution within...

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Abstract

The invention discloses a water-based water-scrubbing-resistant acrylic emulsion and a preparation method thereof. The emulsion comprises components in parts by weight as follows: 40-60 parts of deionized water, 10-40 parts of a hard acrylic monomer, 10-40 parts of a soft acrylic monomer, 1-10 parts of a functional acrylic monomer, 1-20 parts of a long-chain acrylic monomer, 0.1-10 parts of an emulsifier and 0.01-1 part of an initiator. During preparation, the emulsifier, the hard acrylic monomer, the soft acrylic monomer, the long-chain acrylic monomer, the functional acrylic monomer and part of the deionized water are mixed, and a pre-emulsion is obtained; the rest deionized water is preheated to 78-82 DEG C, part of the initiator and part of the pre-emulsion are added, the temperature is held for 20-40 min after the system turns blue, the rest pre-emulsion and the rest initiator are added dropwise and controlled to be completely added within 2-5 h, and the temperature is held for 0.3-0.7 h after addition; the system is cooled to 45 DEG C, the pH value of the system is adjusted to 7-8 by a neutralizer, and then discharging is performed. The emulsion has the advantages as follows: the emulsion is good in water scrubbing resistance, safe and environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of water-based coatings, and in particular relates to a water-based water-resistant scrubbing acrylic emulsion and a preparation method thereof. Background technique [0002] Paper and film materials need to be coated with a layer of protective material after surface printing for waterproof and protective functions. At present, oil-based paints are mainly used in the industry, and oil-based paints contain toxic solvents such as toluene and methyl ethyl ketone. , unsafe production, poor environmental sanitation. The present invention uses water-based acrylic paint instead of oil-based paint for surface coating, but since water-based paint uses water as the dispersion medium, common acrylic emulsions are more sensitive to water, and the coating is easily wiped off during transportation and production in wet weather. Bad, affect the appearance. Contents of the invention [0003] The object of the present in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/14C08F220/06C08F220/28C08F2/22C09D133/12C09D133/08
Inventor 虞明东王玉春
Owner SHANGHAI WEIKAI CHEM
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