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Aqueous antiseptic metal undercoat polyvinyl dichloride (PVDC) copolymer emulsion and preparation method thereof and application

A copolymer emulsion and metal technology, applied in the direction of anti-corrosion coatings, coatings, etc., can solve the problems of unsuitable large-scale industrial production, complex synthesis process of water-based paint, high synthesis cost, etc., achieve low cost, improve stability, and volatile organic compounds The effect of low content

Active Publication Date: 2013-04-24
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

The patent application of CN01127425 discloses a kind of water-based acrylic modified alkyd amino baking varnish, which utilizes vegetable oil, polyhydric alcohol, dibasic anhydride, oleic acid, acrylic acid (ester) monomer, amino resin, etc. to make acrylic modified alkyd Amino resin emulsion, and then this emulsion is deployed into water-based paint, which has good water resistance; but the synthesis process of this water-based paint is relatively complicated, the synthesis cost is high, it is not suitable for large-scale industrial production and the corrosion resistance is not good; CN201110174160 patent application Disclosed is a water-based alkyd amino primer for anti-theft doors and a preparation method thereof, which uses water-based alkyd resin and amino resin as base materials, iron oxide red, toluidine red, composite zinc phosphate, composite iron-titanium powder and precipitated barium sulfate Prepared as a pigment and filler, high cost, poor corrosion resistance

Method used

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  • Aqueous antiseptic metal undercoat polyvinyl dichloride (PVDC) copolymer emulsion and preparation method thereof and application
  • Aqueous antiseptic metal undercoat polyvinyl dichloride (PVDC) copolymer emulsion and preparation method thereof and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Raw material preparation:

[0023] 1) Mixed monomer preparation: mix 92 kg of vinylidene chloride, 4 kg of methyl methacrylate, and 0.5 kg of acrylonitrile to obtain a mixed monomer;

[0024] 2) Preparation of initiator: dissolve 160 g of tert-butyl hydroperoxide in 8 kg of water to obtain an aqueous solution of tert-butyl hydroperoxide, and dissolve 160 g of sodium formaldehyde sulfoxylate in 8 kg of water to obtain an aqueous solution of sodium formaldehyde sulfoxylate;

[0025] 3) Preparation of mixed emulsifier: mix 1.2 kg of AMPS and 1 kg of 2A-1 emulsifier, add 3.5 kg of acrylic acid, and add water to 20 kg to prepare a mixed emulsifier;

[0026] 2. Seed aggregation:

[0027] Add 64kg of water to the reaction kettle, add 120g of sodium dodecylbenzene sulfonate, OP-10280g, 30g of glacial acetic acid, 1g of ferrous chloride, seal the kettle, replace the gas 3 times, evacuate, and inhale a mixture of 5% of the formula The monomer, cold dispersion for 0.5h, heated to 47℃, p...

Embodiment 2

[0032] 1. Raw material preparation:

[0033] 1) Mixed monomer preparation: mixed vinylidene chloride 110.4 kg, methyl acrylate 4.8 kg, and acrylonitrile 0.6 kg to obtain mixed monomer; 2) initiator preparation: dissolve 220 g of tert-butyl hydroperoxide in 8 kg of water to obtain a mixed monomer Dissolve 220 g of sodium formaldehyde sulfoxylate in 8 kg of water in tert-butyl hydrogen peroxide aqueous solution to obtain an aqueous solution of sodium formaldehyde sulfoxylate;

[0034] 3) Preparation of mixed emulsifier: mix 1.5 kg of AMPS and 1.2 kg of 2A-1 emulsifier, add 4.2 kg of acrylic acid, and add water to 20 kg to prepare a mixed emulsifier;

[0035] 2. Seed aggregation:

[0036] Add 44kg of water to the reaction kettle, add 150g of sodium dodecylbenzene sulfonate, OP-10300g, 30g of glacial acetic acid, 1g of ferrous chloride, seal the kettle, replace the gas 3 times, vacuum, and inhale a mixture of 5% of the formula The monomer, cold dispersion for 0.5h, heated to 47℃, pumped ...

Embodiment 3

[0040] 1. Raw material preparation:

[0041] 1) Mixed monomer preparation: mix 92 kg of vinylidene chloride, 4 kg of butyl methacrylate, and 0.5 kg of acrylonitrile to obtain a mixed monomer;

[0042] 2) Preparation of initiator: dissolve 160 g of tert-butyl hydroperoxide in 8Kg of water to obtain an aqueous solution of tert-butyl hydroperoxide, and dissolve 160 g of sodium formaldehyde sulfoxylate in 8 kg of water to obtain an aqueous solution of sodium formaldehyde sulfoxylate;

[0043] 3) Preparation of mixed emulsifier: mix 1.2 kg of AMPS and 1 kg of 2A-1 emulsifier, add 3.5 kg of acrylic acid, and add water to 20 kg to prepare a mixed emulsifier;

[0044] 2. Seed aggregation:

[0045] Add 64kg of water to the reaction kettle, add 120g of sodium dodecylbenzene sulfonate, OP-10 280g, 30g of glacial acetic acid, 1g of ferrous chloride, seal the kettle, replace the gas 3 times, vacuum, and suck 5% of the formula Mix the monomers, cold disperse for 0.5h, heat up to 47℃, pump in the pre...

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Abstract

The invention discloses an aqueous antiseptic metal undercoat polyvinyl dichloride (PVDC) copolymer emulsion and a preparation method thereof and application, and aims at solving the problems that an existing solvent type undercoat used for metal corrosion prevention is harmful to a human body and easily causes environmental pollution and the like. Vinylidene chloride, (methyl) acrylic esters, acrylonitrile and crylic acid are used as mixing monomers, seeded emulsion polymerization is adopted to obtain the aqueous antiseptic metal undercoat PVDC copolymer emulsion, the aqueous antiseptic metal undercoat PVDC copolymer emulsion is low in cost, simple in synthetic process, low in content of volatile organic compounds, environment-friendly, pollution-free, good in corrosion prevention performance of obtained metal undercoat, and capable of replacing the existing solvent type undercoat and being used for corrosion prevention of metal surface.

Description

Technical field [0001] The invention relates to a PVDC copolymer emulsion, in particular to a PVDC copolymer emulsion for a water-based anticorrosive metal primer, and a preparation method and application thereof. Background technique [0002] At present, most commonly used metal anticorrosive primers are solvent-based primers with high volatile organic compounds. These volatile organic compounds will volatilize into the atmosphere during construction, which is harmful to humans and causes environmental pollution. With the improvement of people's awareness of environmental protection, there is an increasing demand for water-based primers to replace solvent-based primers, and relevant research and development have also made continuous progress. The patent application of CN01127425 discloses a waterborne acrylic modified alkyd amino baking paint, which uses vegetable oil, polyols, dibasic acid anhydrides, tungoleic acid, acrylic (ester) monomers, amino resins, etc. to make acrylic ...

Claims

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Application Information

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IPC IPC(8): C08F214/08C08F220/14C08F220/18C08F220/44C08F220/06C08F2/30C08F2/26C09D127/08C09D5/08
Inventor 方勇邢青涛
Owner HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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