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High-oxygen-barrier polyvinylidene chloride coating emulsion and preparation method thereof

A technology of polyvinylidene chloride and coating emulsion, applied in the direction of coating, etc., to achieve good dispersion performance, uniform slip performance and excellent effect

Inactive Publication Date: 2013-03-13
HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the existing PVDC emulsions are used for BOPP coating films, primers are required, but they do not have the problem of self-adhesiveness. The purpose of the present invention is to provide a high oxygen resistance PVDC coating emulsion and its preparation method. Coating on BOPP, without the need to apply primer, the coating film produced has high oxygen barrier performance

Method used

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  • High-oxygen-barrier polyvinylidene chloride coating emulsion and preparation method thereof
  • High-oxygen-barrier polyvinylidene chloride coating emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Take 8.6 kg of vinylidene chloride, 0.6 kg of acrylic acid, 1 kg of butyl acrylate, 0.16 kg of ethyl methacrylate, 0.43 kg of acrylonitrile, 0.05 kg of ammonium persulfate, 0.1 kg of OP-10, and 0.06 kg of ethanol 1 kg and 9 kg of deionized water are placed in separate raw material barrels. First, add a small amount (accounting for about one-third of the total amount) of raw materials and deionized water into the reactor for mixing, start stirring at a stirring speed of 120 rpm, and slowly heat up to 60°C for pre-treatment. polymerization. Then, add the remaining 5 kinds of monomers, ammonium persulfate, OP-10, ethanol and deionized water continuously and uniformly within 1 hour, continue stirring for 1 hour, and obtain 20 kg of solid content after cooling and standing. 55% PVDC copolymer emulsion.

[0026] Take 12.5 kg of the above-prepared PVDC copolymer emulsion, put it into a stainless steel container, start stirring, and set the stirring speed at 120 rpm. Then ta...

Embodiment 2

[0028] Take 22.5 kg of vinylidene chloride, 1.25 kg of acrylic acid, 2.1 kg of butyl acrylate, 0.85 kg of ethyl methacrylate, 0.6 kg of acrylonitrile, five monomers, 0.05 kg of ammonium persulfate, 0.05 kg of potassium persulfate, OP- 100.35 kg, 0.25 kg of ethanol and 22 kg of deionized water are placed in separate raw material drums. First, add a small amount (accounting for about one-third of the total amount) of more than one raw material and deionized water into the reactor for mixing, start stirring at a stirring speed of 180 rpm, and slowly heat up to 75°C for pre-treatment. polymerization. Then, the remaining 5 kinds of monomers, ammonium persulfate, potassium persulfate, OP-10, ethanol and deionized water were continuously and uniformly added within 2 hours, and the stirring was continued for 1 hour, and after cooling and standing, the obtained 50 kg of PVDC copolymer emulsion with a solids content of 56%.

[0029]Take 36 kg of the above-prepared PVDC copolymer emuls...

Embodiment 3

[0031] Take 88.4 kg of vinylidene chloride, 4.59 kg of acrylic acid, 5.1 kg of butyl acrylate, 5.27 kg of ethyl methacrylate, 0.68 kg of acrylonitrile, 0.425 kg of ammonium persulfate, 0.765 kg of OP-100, 0.68 octanol kg and 64.09 kg of deionized water, placed in separate raw material drums. First, add a small amount (accounting for about one-third of the total amount) of raw materials and deionized water into the reactor for mixing, start stirring at a stirring speed of 160 rpm, and slowly heat up to 75°C for pre-treatment. polymerization. Then, the remaining 5 kinds of monomers, ammonium persulfate, OP-10, octanol and deionized water were added continuously and uniformly within 1.8 hours, and the stirring was continued for 2 hours, and 170 kg of solid was obtained after cooling and standing. A PVDC copolymer emulsion with a content of 62.3%.

[0032] Take 108 kg of the above-prepared PVDC copolymer emulsion, put it into a stainless steel container, start stirring, and set ...

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Abstract

The invention relates to a high-oxygen-barrier polyvinylidene chloride coating emulsion. The emulsion is prepared from the raw materials by weight percent: 65-83% of PVDC (Polyvinyl Dichloride) copolymerization emulsion, 1-6% of adhesion promoter, 2.8-7.5% of nano montmorillonite, 0.2-0.5% of dispersing agent, 2-4% of slip agent, 3-4% of anti-sticking agent and 21-36.5% of deionized water, wherein the PVDC copolymerization emulsion is prepared from the raw materials by weight percent: 43-52% of polyvinyl dichloride, 2-4% of acrylic acid, 3-5% of butyl acrylate, 0.5-3.5% of ethyl methacrylate, 0.4-2.5% of acrylonitrile, 0.2-0.4% of chain initiator, 0.3-0.8% of emulsifying agent, 37-45% of deionized water and 0.1-0.5% of defoaming agent. The emulsion is used for the coating technology, is free from precoating primer, and has higher oxygen barrier performance.

Description

technical field [0001] The invention relates to a high-resistance oxygen polyvinylidene chloride (hereinafter referred to as PVDC) coating emulsion and a preparation method thereof, belonging to the field of new polymer materials. Background technique [0002] In the plastic packaging industry, coated films are becoming more and more competitive due to their advantages such as small thickness, good flexibility and low cost. The coating film is formed by coating a layer of functional paint on the surface of the substrate film. There are many substrates that can be coated, such as BOPP, PET, PA, etc. Among them, BOPP is the cheapest and most widely used. At present, when food manufacturers choose packaging materials, the first thing they pay attention to is the oxygen barrier performance of the coating film. Under the existing technology, the PVDC coating film with BOPP as the base material has an oxygen permeability of at least 5cc / m 2 ·24 hours, which can basically meet th...

Claims

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Application Information

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IPC IPC(8): C09D127/08C09D7/12C08F214/10C08F220/06C08F220/14
Inventor 王恩飞邢青涛
Owner HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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