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Preparation method for modified chlorinated polyether resin

A chloroether resin and modification technology, applied in the field of preparation of modified chloroether resin, can solve the problems of insufficient weather resistance and water resistance, and achieve the effects of strong hydrophobicity, high polymerization rate and good solubility

Active Publication Date: 2012-06-13
JIANGSU LISIDE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention mainly aims at the problem of insufficient weather resistance and water resistance of the prior art products, and proposes a preparation method of modified chloroether resin with simple synthesis process and short synthesis time. Retains the original technical properties and greatly improves weather and water resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Add 100g of deionized water, 2.5g of sodium lauryl sulfate, 80g of vinyl chloride, 20g of isobutyl vinyl ether and 15g of tertiary vinyl carbonate (VeoVa10) into a reactor, and stir at room temperature to obtain a monomer premix material. In another reactor, add 100g deionized water and 2.0g sodium bicarbonate, stir, heat up to 45°C, add 0.25g ammonium persulfate and 0.05g sodium bisulfite, add pre-emulsified monomer continuously through metering pump, and After the pre-emulsified monomer was added, the reaction was continued until the system pressure dropped by 0.1Mpa to terminate the polymerization, and 92.2g of modified chloroether resin was obtained after conventional demulsification, separation, and drying.

Embodiment 2

[0018] Add 100g of deionized water, 3.5g of sodium lauryl sulfate, 75g of vinyl chloride, 25g of isobutyl vinyl ether and 10g of tertiary vinyl carbonate (VeoVa10) into a reactor, and stir at room temperature to obtain a monomer premix material. In another reactor, add 50g deionized water and 0.5g sodium hydroxide, stir, heat up to 40°C, add 0.40g ammonium persulfate and 0.10g sodium bisulfite, add pre-emulsified monomer continuously through metering pump, and After the addition of the pre-emulsified monomer, the reaction was continued until the system pressure dropped by 0.05Mpa, and the polymerization was terminated. After conventional demulsification, separation and drying, 93.5g of modified chloroether resin was obtained.

Embodiment 3

[0020] Add 100g of deionized water, 1.0g of sodium lauryl sulfate, 70g of vinyl chloride, 30g of isobutyl vinyl ether and 5g of tertiary vinyl carbonate (VeoVa10) into a reactor, and stir at room temperature to obtain a monomer premix material. Add 100g deionized water and 0.5g sodium hydroxide to another reactor, stir, heat up to 50°C, add 0.20g ammonium persulfate and 0.05g sodium sulfite, add pre-emulsified monomer continuously through a metering pump, and pre-emulsify After the addition of the monomers, the reaction was continued until the system pressure dropped by 0.15Mpa to end the polymerization, and 93.0 g of modified chloroether resins were obtained after conventional demulsification, separation, and drying.

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Abstract

The invention discloses a preparation method for modified chlorinated polyether resin, which comprises the steps as follows: 65 to 80 parts of vinyl chloride, 20 to 35 parts of isobutyl vinyl ether, and versatic acid vinyl ester which accounts for 5.0 to 15 percent of the total mass of the above two monomers are mixed with 50 to 150 parts of deionized water and 1.0 to 3.5 parts of emulsifier by agitating in a reactor to obtain a monomer premix; 50 to 100 parts of deionized water and 0.5 to 2.5 parts of pH regulator are added in another reactor and are agitated and heated, 0.05 to 0.50 parts of water-soluble oxidation-reduction initiating agent and the monomer premix are added, and emulsion polymerization is carried while the pressure of the polymerization system is maintained changeless basically; and after the monomer premix is added, the emulsion polymerization continues until the pressure of the system drops, and then regular deemulsification, separation and drying procedures are carried out in sequence. The invention has the advantages that the reaction conditions are easy to control, the polymerization rate is high, the reaction time is short, and the product has high solubleness, weatherability, waterproofness and alkaline resistance.

Description

technical field [0001] The invention relates to a preparation method of chloroether resin, in particular, the invention relates to a preparation method of modified chloroether resin. Background technique [0002] The resin obtained by free radical random copolymerization of vinyl chloride and isobutyl vinyl ether is called chloroether resin. Chlorine ether resin can be dissolved in solvents such as aromatic hydrocarbons and esters, and can be miscible with alkyd resin, acrylic resin, dry oil, tar, asphalt and plasticizers. Its products have strong saponification resistance and chemical corrosion resistance. It is characterized by strong adhesion to substrates such as plastics and metals. It is a kind of adhesive resin used in the manufacture of anti-corrosion coatings and inks. In particular, the anti-corrosion ability of the finished coating is 2 to 3 times that of ordinary anti-corrosion coatings. It can be used as a substitute for chlorinated rubber for anti-corrosion co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F214/06C08F216/18C08F218/04C08F4/40
Inventor 李金忠周存林吴德兵
Owner JIANGSU LISIDE NEW MATERIAL
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