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Polyvinyl chloride-based paste resin, and preparation method therefor

A polyvinyl chloride paste resin, polyvinyl chloride resin technology, applied in the field of polyvinyl chloride paste resin and its preparation, can solve the problems of limited improvement of foamability, poor compatibility, poor dispersion, etc., to achieve improved Effects of viscosity characteristics, excellent foaming and moisture resistance

Active Publication Date: 2015-08-12
HANWHA CHEMICAL CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when an acrylic resin solution is added to PSR latex containing ion-exchanged water as a main component, it is poorly dispersed and exists as aggregates due to poor compatibility of the acrylic resin solution with ion-exchanged water , and therefore during latex transportation or drying it causes the PSR primary particles in the latex to aggregate or adhere to the sieve or wall of the dryer, and affect normal resin production
Therefore, in order to solve this problem, there is the inconvenience of using a surfactant for dispersing the acrylic acid solution
[0009] These prior art techniques are effective in improving the foamability of the resin itself, but they have the disadvantages of poor thermal stability, or limited or inconvenient improvements in foamability
In particular, when the content of the emulsifier is increased, there is a possibility that the foamability may be deteriorated due to moisture in the atmosphere
In general, due to the nature of emulsifiers having both hydrophilic groups and hydrophobic groups, PSR resins are very sensitive to moisture, and when PSR resins absorb atmospheric moisture, there is a problem in that the uniformity of pores deteriorates , the pore size increases, and inhomogeneities appear on the surface

Method used

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  • Polyvinyl chloride-based paste resin, and preparation method therefor
  • Polyvinyl chloride-based paste resin, and preparation method therefor

Examples

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preparation example Construction

[0025] And, the preparation method of the PVC paste resin comprises the steps of: preparing a PVC resin latex comprising a PVC resin; adding a styrene / acrylic resin solution to the PVC resin latex; and drying the styrene / acrylic resin into which the styrene / acrylic PVC resin latex for resin solution.

[0026] In the present invention, the terms 'first', 'second', etc. are used to explain various components, and the terms are used only to distinguish one component from other components.

[0027] Furthermore, the words "on" or "over" as used in the context of forming or building a layer or element means that one layer or element is formed or built directly on another layer or element, or To additionally form or build a layer or element between two layers or on an object or substrate.

preparation Embodiment 1

[0079] Water-soluble styrene / acrylic resins were prepared by performing continuous bulk polymerization of styrene monomers (styrene and α-methylstyrene) and acrylic monomers in the amounts disclosed in Table 1 below in a 1 L SUS reactor. The polymerization initiator used was tert-butyl peroxybenzoate, and the amount used was 0.2 parts by weight based on the total weight of the monomers. And, a mixture of dipropylene glycol methyl ether and water was used as a solvent in an amount of 9.0 parts by weight per 100 parts by weight of the monomer. At this time, the water content in the mixed solvent was 18%. The reaction temperature is 217°C.

[0080] After mixing 30 parts by weight of styrene / acrylic resin (Mw 12,800) and 62.8 parts by weight of ion-exchanged water, 7.2 parts by weight of 28% ammonia water was added thereto in 2 to 3 portions while heating the mixture to 70°C. Then, a styrene / acrylic resin solution was prepared by stirring the mixture at high speed for about 2 t...

preparation Embodiment 2

[0082] Water-soluble styrene / acrylic resins were prepared by performing continuous bulk polymerization of styrene monomers (styrene and α-methylstyrene) and acrylic monomers in the amounts disclosed in Table 1 below in a 1 L SUS reactor. The polymerization initiator used was tert-butyl peroxybenzoate, and the amount used was 0.4 parts by weight based on the total weight of monomers. And, a mixture of dipropylene glycol methyl ether and water was used as a solvent in an amount of 9.0 parts by weight per 100 parts by weight of the monomer. At this time, the water content in the mixed solvent was 18%. The reaction temperature is 221°C.

[0083] After mixing 30 parts by weight of styrene / acrylic resin (Mw 9,500) and 62.8 parts by weight of ion-exchanged water, 7.2 parts by weight of 28% ammonia water was added thereto in 2 to 3 portions while heating the mixture to 70°C. Then, a styrene / acrylic resin solution was prepared by stirring the mixture at high speed for about 2 to 3 h...

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Abstract

The present invention relates to a polyvinyl chloride-based resin latex, and a preparation method therefor. A polyvinyl chloride-based paste resin of the present invention has improved foam properties and moisture resistance and increased static viscosity. Therefore, the paste resin of the present invention can be widely used in foam products requiring high foam properties.

Description

technical field [0001] The invention relates to a polyvinyl chloride paste resin and a preparation method thereof. More specifically, it relates to a polyvinyl chloride paste resin exhibiting excellent foamability and moisture resistance, and a method for preparing the same. [0002] This application claims the benefit of Korean Patent Application No. 10-2012-0119763 filed on October 26, 2012, which is hereby incorporated by reference in its entirety into this application. Background technique [0003] Polyvinyl chloride paste resin (hereinafter, referred to as "PSR") is a general-purpose resin widely used in construction supplies, daily necessities (such as wallpaper, artificial leather, fabrics, boards and films) foam products. The most important things for a foam product are the foam product surface, foam cell size, cell uniformity, and these characteristics are collectively referred to as "foamability". [0004] As techniques for improving the foamability of PSR, ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L25/08C08L33/04C08F14/06
CPCC08F14/06C08F212/08C08L27/06C08L33/04C08L25/14C08F212/12C08F220/06C08L25/08
Inventor 沈基祚金载松崔贞贤张连洙张太荣
Owner HANWHA CHEMICAL CORPORATION
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