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Preparation method of acrylic plastic-plastic composite latex

A composite latex and acrylic technology, applied in the direction of adhesives, can solve the problem of increasing the barrier property, printability and other properties of food packaging bags without any help, and achieve excellent barrier properties and increase the effect of bonding strength.

Active Publication Date: 2015-03-25
江西多盛新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, whether it is a solvent-based adhesive or a water-based adhesive, it only improves the composite strength and acts as an adhesive when the flexible packaging material is compounded, and does not contribute to the performance of food packaging such as increasing the barrier property and printability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] In Example 1, the mixed monomer consists of the following components by weight percentage:

[0047] (1) Vinylidene chloride monomer, the dosage is 45% of the total weight of mixed monomers;

[0048] (2) For unsaturated fatty acid monomers, the dosage is 15% of the total weight of mixed monomers;

[0049] (3) Acrylic ester monomers, the dosage is 35% of the total weight of mixed monomers;

[0050] (4) Cross-linking monomers, the dosage is 5% of the total weight of mixed monomers;

[0051] The percentages of the emulsifier, initiator, pH regulator and auxiliary agent in the total weight of the mixed monomer are as follows: emulsifier 2%; initiator 0.3%; pH regulator 0.01%; auxiliary agent 0.005%.

Embodiment 2

[0052] In Example 2, the mixed monomer consists of the following components by weight percentage:

[0053] (1) Vinylidene chloride monomer, the dosage is 30% of the total weight of mixed monomers;

[0054] (2) Unsaturated fatty acid monomers, the dosage is 20% of the total weight of mixed monomers;

[0055] (3) Acrylic ester monomers, the dosage is 45% of the total weight of mixed monomers;

[0056] (4) Cross-linking monomers, the dosage is 5% of the total weight of mixed monomers;

[0057] The percentages of the emulsifier, initiator, pH regulator and auxiliary agent in the total weight of the mixed monomer are as follows: emulsifier 1%; initiator 0.03%; pH regulator 0.005%; auxiliary agent 0.002%.

Embodiment 3

[0058] In Example 3, the mixed monomers consist of the following components by weight percentage:

[0059] (1) Vinylidene chloride monomer, the dosage is 60% of the total weight of mixed monomers;

[0060] (2) For unsaturated fatty acid monomers, the dosage is 5% of the total weight of mixed monomers;

[0061] (3) Acrylic monomers, the dosage is 27% of the total weight of mixed monomers;

[0062] (4) Cross-linking monomers, the dosage is 8% of the total weight of mixed monomers;

[0063] The percentages of the emulsifier, initiator, pH regulator and auxiliary agent in the total weight of the mixed monomer are as follows: emulsifier 3%; initiator 0.5%; pH regulator 0.02%; auxiliary agent 0.01%.

[0064] The preparation method of above-mentioned acrylic plastic composite latex comprises the steps:

[0065] Step 1: Feed deionized water, 35% by weight emulsifier and mixed monomer into the monomer mixing tank while stirring according to the weight ratio, wherein the weight ratio...

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Abstract

The invention discloses a preparation method of an acrylic plastic-plastic composite latex. The preparation method comprises the following steps of: step 1, pouring deionized water, 35 wt% of an emulsifier and a mixed monomer in a monomer mixing kettle in a weight ratio while stirring, controlling the temperature to be below 10 DEG C, and stirring for 1-2 hours in an airtight condition; and step 2, pouring water, 65 wt% of an emulsifier, an initiator, a pH regulator and an additive in a reaction kettle, vacuumizing, introducing nitrogen, heating to 50-80 DEG C, pumping in pre-emulsification solution for 5-10 hours via a metering pump, and then replenishing the initiator which is 0.1% of the total weight of the mixed monomer, reacting for 1-2 hours, cooling, filtering by a 150-mesh filter screen, and discharging. According to the preparation method disclosed by the invention, with the adoption of the technical scheme aforementioned, the prepared acrylic plastic-plastic composite latex has the excellent barrier performance and the good printing performance of PVDC (polyvinyl dichloride) except the safety and environmental protection performances of a water-based adhesive.

Description

technical field [0001] The invention relates to a preparation method of water-based acrylic plastic composite latex. Background technique [0002] With the development of my country's economy and the continuous improvement of people's living standards, the food industry will be greatly developed. According to statistics, my country's food flexible packaging bags need a large amount of adhesives every year. With the development of my country's adhesive industry, it will provide my country's food flexible packaging. There are many types of glue, but most of the adhesives use a lot of toxic raw materials in the process of production and use, such as formaldehyde, toxic solvents, curing agents and other additives, which have brought serious pollution to the environment. With the improvement of people's awareness of health and environmental protection, in recent years, water-based adhesives have been developed rapidly, such as water-based polyurethane, acrylic emulsion, polyvinyl ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F214/08C08F220/06C08F220/14C08F220/18C08F220/28C08F220/32C08F2/26C09J127/08
Inventor 胡建强高卫季国华傅冬浩胡挺
Owner 江西多盛新材料科技有限公司