Interpolymer paste resin and its preparing method

A vinyl acetate copolymerization paste resin and paste resin technology, which is applied in the field of preparing vinyl chloride-vinyl acetate copolymerization paste resin, and can solve the problems that PVC paste resin cannot be used in processing and application fields, cannot be formed into paste, and has irregular shapes, etc.

Inactive Publication Date: 2009-01-28
SHENYANG CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the vinyl chloride-vinyl acetate copolymer resin produced by the suspension polymerization method can reduce the plasticizing temperature, the particle size of the product is 50-250 μm, the shape is irregular and porous, and it can only swell in the plasticizer and cannot be paste, so it cannot Applied in PVC paste resin processing application field

Method used

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  • Interpolymer paste resin and its preparing method
  • Interpolymer paste resin and its preparing method
  • Interpolymer paste resin and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Feeding formula: vinyl chloride 95 (weight percent, the same below), vinyl acetate 5, pure water 120, sodium lauryl sulfate 1.2, C 12-26 Fatty alcohol 1.5, azobisisoheptanenitrile 0.02, toluene 0.1, ethylhexyl peroxydicarbonate 0.01.

[0037] Sodium lauryl sulfate, C 12-26 Fatty alcohol and 10 parts of pure water (DW) were added to the emulsifier dissolving tank (equipment 3 in Figure 1) and stirred. Azobisisoheptanenitrile, toluene, and 5 parts of pure water were added to the initiator dissolving tank 1 (equipment 1 in FIG. 1 ) and stirred. Add ethylhexyl peroxydicarbonate and 5 parts of pure water to the initiator dissolving tank 2 (equipment 2 in FIG. 1 ) and stir. At the same time, add vinyl chloride (VC), vinyl acetate (VAC), pure water (100 parts), the dissolved emulsifier, and the initiator into the dispersion tank (equipment 4 in Figure 1), and turn on the dispersion pump (equipment 5 in Figure 1 ). ), while dispersing, feeding into the polymerization kettle ...

Embodiment 2

[0043] Follow the steps of Example 1.

[0044] Feeding formula: vinyl chloride 93 (weight percent, the same below), vinyl acetate 7, pure water 110, sodium dodecyl benzene sulfonate 1.2, C 12-26 Fatty alcohol 0.9, fatty acid 0.3, azobisisobutyronitrile 0.023, di-tert-butylcyclohexyl peroxydicarbonate 0.018.

[0045] Dispersion feeding time is 70min

[0046] Polymerization temperature 55℃

[0047] The conversion rate of vinyl chloride was 86.5%, and the conversion rate of vinyl acetate was 50.4%.

[0048] The analysis results of the finished product are as follows:

[0049] Product Quality Index

[0050]

Embodiment 3

[0052] Follow the steps of Example 1.

[0053] Feeding formula: vinyl chloride 86, vinyl acetate 14, pure water 100, sodium tetradecyl benzene sulfonate 0.9, C 14，2-26 Fatty alcohol 1.0, benzoyl peroxide 0.027, diisopropyl peroxydicarbonate 0.016.

[0054] Dispersion feeding time is 65min

[0055] Polymerization temperature 53℃

[0056] The conversion rate of vinyl chloride was 92.8%, and the conversion rate of vinyl acetate was 67%.

[0057] The analysis results of the finished product are as follows:

[0058] Product Quality Index

[0059]

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Abstract

A pasty copolymer resin of chloroethylene-vinyl acetate is prepared through under the protection of surfactant dispersing the chloroethylene monomer and vinyl acetate monomer in water by use of high-speed pump or slowly stirring to form fine liquid drips, polymerizing at 40-65 deg.C under the action of trigger system to obtain copolymer latex with 0.1-2.0 microns glanularity, and spray drying. Its advantages are better paste-forming performance and good low-temp plasticity.

Description

technical field [0001] The invention belongs to the technical field of polymer chemical industry, in particular to the preparation of vinyl chloride-vinyl acetate copolymerized paste resin by a micro-suspension or emulsion copolymerization method. Background technique [0002] At present, there are polyvinyl chloride (PVC) paste resin products produced in China. The main preparation methods are emulsion polymerization and micro-suspension polymerization. The primary particle size of the product is 0.1-2.0 μm, and the shape is spherical. Solid products can be made by plasticizing, and the plasticizing temperature is 140-230℃. Its main application areas are as follows: [0003] (1) Coated products: clothing and outerwear, gloves, raincoats, car interior decoration, wallpaper, floor leather, luggage bags, interior decoration of trains and passenger cars, tents, inflatable houses, inflatable life preservers, car hoods; floorboards, wallpapers , Floor lining, paper coating, el...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F214/06C08F2/26
Inventor 马竞朱静秋刘卫东杨艳华邵长伟
Owner SHENYANG CHEM IND CO LTD
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