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Preparation method of water-based chloroethylene/isobutyl vinyl ether copolymer dispersion

A technology of isobutyl vinyl ether and vinyl chloride, applied in the field of preparation of aqueous vinyl chloride/isobutyl vinyl ether copolymer dispersion, can solve problems such as low grafting efficiency, achieve low VOC content, excellent comprehensive Performance and storage stability

Active Publication Date: 2013-07-03
JIANGSU LISIDE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this technology is that the grafting efficiency of free radical graft copolymerization is low, and most of the acrylic acid (ester) coexists with the modified chloroether resin in the form of random copolymer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add 200 g of butanone and 30 g of isobutyl vinyl ether dissolved in 1.0 g of azobisisobutyronitrile into the pressure-resistant reactor, seal and exhaust oxygen, add 40 g of vinyl chloride, stir, raise the temperature to 65 ° C, and gradually add the A mixed monomer composed of 30g vinyl chloride, 5g hydroxyethyl methacrylate and 20g acrylic acid, control the dropping rate to keep the pressure fluctuation of the polymerization system not exceeding 0.02MPa, and continue the polymerization reaction until the system pressure drops by 0.10MPa after the monomer dropping is completed , the temperature is lowered to complete the polymerization, and the unreacted monomer mainly composed of vinyl chloride is recovered by self-pressure to obtain a hydrophilic modified vinyl chloride / isobutyl vinyl ether copolymer solution.

[0034]Stir the above copolymer solution, add 16.4g of trimethylamine dropwise, then add 200g of deionized water, stir at high speed to obtain a dispersion, he...

Embodiment 2

[0036] Add 125 g of butanone and 30 g of isobutyl vinyl ether dissolved in 1.0 g of azobisisoheptanonitrile into the pressure-resistant reactor, seal and exhaust oxygen, add 40 g of vinyl chloride, stir, heat up to 60 ° C, and gradually dropwise add A mixed monomer composed of 30g vinyl chloride, 15g hydroxypropyl acrylate and 10g itaconic acid, control the dropping rate to keep the pressure fluctuation of the polymerization system not exceeding 0.02MPa, continue the polymerization reaction until the system pressure drops by 0.01MPa , the temperature is lowered to complete the polymerization, and the unreacted monomer mainly composed of vinyl chloride is recovered by self-pressure to obtain a hydrophilic modified vinyl chloride / isobutyl vinyl ether copolymer solution.

[0037] Stir the above copolymer solution, add 9.0g of trimethylamine dropwise, then add 105g of deionized water, stir at a high speed to obtain a dispersion, raise the temperature of the dispersion to 85°C, and ...

Embodiment 3

[0039] Add 200g of dioxyethane and 30g of isobutyl vinyl ether dissolved in 2.5g of benzoyl peroxide into the pressure-resistant reactor, seal and exhaust oxygen, add 40g of vinyl chloride, stir, raise the temperature to 75°C, and gradually add A mixed monomer composed of 30g vinyl chloride, 10g hydroxyethyl acrylate and 15g methacrylic acid, control the dropping rate to keep the pressure fluctuation of the polymerization system not exceeding 0.02MPa, continue the polymerization reaction until the system pressure drops by 0.10 MPa, the temperature is lowered to complete the polymerization, and the unreacted monomer mainly composed of vinyl chloride is recovered by self-pressure to obtain a hydrophilic modified vinyl chloride / isobutyl vinyl ether copolymer solution.

[0040] Stir the above copolymer solution, add 10.3g of trimethylamine dropwise, then add 200g of deionized water, stir at a high speed to obtain a dispersion, raise the temperature of the dispersion to 85°C, and di...

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PUM

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Abstract

The invention discloses a preparation method of water-based chloroethylene / isobutyl vinyl ether copolymer dispersion. 60 to 75 mass percent of chloroethylene monomer, 25 to 40 mass percent of isobutyl vinyl ether monomer, acrylic hydroxyalkyl ester or the monomer of the same kind in an amount which is 5 to 15 percent of the total mass of the chloroethylene and the isobutyl vinyl ether, and unsaturated carboxylic acid monomer in an amount which is 10 to 25 percent of the total mass of the chloroethylene and the isobutyl vinyl ether are used as raw materials; and the water-based chloroethylene / isobutyl vinyl ether copolymer dispersion is obtained by polymerization reaction, neutralization reaction, aqueous phase dispersion treatment and organic solution removal in organic solvent, initiator and organic amine neutralizer. The dispersion has low volatile organic compound (VOC) content, environmental friendliness and good cohesiveness, and is particularly suitable for producing water-based coating, water-based adhesive and water-based ink.

Description

technical field [0001] The invention relates to a method for preparing a vinyl chloride copolymer dispersion, in particular to a method for preparing an aqueous vinyl chloride / isobutyl vinyl ether copolymer dispersion. Background technique [0002] Vinyl chloride / isobutyl vinyl ether (VC / IBVE) copolymer resin, referred to as chloroether resin, is the matrix material for the manufacture of aqueous vinyl chloride / isobutyl vinyl ether copolymer dispersions. Chlorine ether resins are soluble in many paint and ink solvents such as aromatic hydrocarbons, esters and glycol ethers. And it can be miscible with alkyd resin, acrylic resin, drying oil, tar, asphalt and plasticizer. It is a high-performance bonding resin for making coatings, inks and adhesives. Chlorine ether resin does not contain reactive double bonds, and because the combined chlorine atoms are very stable, the coatings made with this resin have certain advantages in terms of flexibility, heat resistance, alkali resi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F214/06C08F216/18C08F220/28C08F220/06C08F222/02C08F8/32C08J3/03
Inventor 李金忠吴德兵周存林陈章明
Owner JIANGSU LISIDE NEW MATERIAL
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