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Acrylic copolymer for processing aid of vinyl chloride resin composition, method for preparing the same and vinyl chloride resin composition containing the same

A technology of vinyl chloride resin and acrylic acid, applied in the field of acrylic copolymers used as processing aids for vinyl chloride resin compositions, preparing the acrylic copolymers and vinyl chloride resin compositions comprising the acrylic copolymers, Can solve problems such as white spots

Active Publication Date: 2011-07-27
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still the possibility of white spots due to the irregularities of the foaming cells

Method used

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  • Acrylic copolymer for processing aid of vinyl chloride resin composition, method for preparing the same and vinyl chloride resin composition containing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-12 and comparative Embodiment 1-4

[0058] Examples 1-12 and Comparative Examples 1-4: Preparation of Acrylic Copolymer

Embodiment 1

[0060] (1) Preparation of acrylic copolymer

[0061] To a 3 L four-necked flask reactor equipped with a stirrer, a thermometer, a nitrogen inlet and a circulating condenser (circulating condenser), 232 g of ion-exchanged water, 37.5 g of 8% fatty acid potassium salt solution and 75 g of vinyl chloride were added by mixing Monomer prepared from seed latex (A1) (solid content: 30 g, average diameter: 100 nm) with methyl methacrylate and butyl acrylate (85:15, 153 g of methyl methacrylate mixed with 27 g of butyl acrylate) mixture to make an emulsion. The temperature of the reactor was maintained at 40° C., and in the presence of nitrogen, 0.07 g of 10% tert-butyl hydroperoxide solution and 6.5 g of 4% activator (activator) solution were added thereto, followed by the first batch reaction. The activator solution was composed of 0.017 g of disodium ethylenediaminetetraacetic acid (EDTA), 0.04 g of sodium formaldehyde sulfoxylate (SFS), 0.001 g of ferrous sulfate, and 1.392 g o...

Embodiment 2

[0068] The experiment was carried out in the same manner as described in Example 1 except that the vinyl chloride seed latex (A2) having an average diameter of 50 nm was used.

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Abstract

The present invention relates to an acrylic copolymer, a method of preparing the same and a vinyl chloride resin composition containing the same, more precisely an acrylic copolymer prepared by polymerization of vinyl chloride seed with a monomer mixture composed of (bl) methyl methacrylate and (b2) one or more monomers selected from the group consisting of alkyl acrylate and alkyl methacrylate, a method of preparing the same, and a vinyl chloride resin composition comprising the same. According to the present invention, the addition of the acrylic copolymer of the invention to the vinyl chloride resin composition results in the excellent compatibility, the improvement of gelation, fish-eye and flow mark inhibitory effect during calendaring and extruding without reducing secondary processability including transparency and elongation at high temperature and at the same time satisfies the required foaming properties including foaming magnitude and foaming cell stability for the foaming extrusion.

Description

technical field [0001] The present invention relates to an acrylic copolymer used as a processing aid for a vinyl chloride resin composition, a method for preparing the acrylic copolymer and a vinyl chloride resin composition comprising the acrylic copolymer, more specifically, to An acrylic copolymer, a method for producing the acrylic copolymer, and a vinyl chloride resin composition comprising the acrylic copolymer, the acrylic copolymer having excellent compatibility so that when it is added to the vinyl chloride resin composition It improves the gelation in the melting process when it is in the material, reduces the white spots and ripples in the calendering or extrusion process without reducing the secondary processability including transparency and elongation at high temperature, and at the same time has an impressive Satisfactory foamability for foam extrusion such as foam amount and stability of foam cells. Background technique [0002] Vinyl chloride resin is a po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F259/04
CPCC08F214/06C08F259/04C08F2/002C08L27/06C08L51/003C08L2666/24C08L2666/04C08L2666/02C08F265/06
Inventor 韩正燮李勇勋安贞宪孔钟允
Owner LG CHEM LTD