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Acrylic acid ester promoter for polyvinyl chloride use, preparation method and application thereof

A technology of acrylate and polyvinyl chloride, which is applied in the field of acrylate additives for polyvinyl chloride, its preparation and application, can solve the problems of product performance impact, product quality control, product appearance impact, etc., and achieve melt fluidity Good, fast plasticizing effect

Inactive Publication Date: 2012-07-04
WUXI CHANGSHENG PLASTICIZING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition amount, addition time, and addition sequence of these additives will have a relatively large impact on the performance of the product, making the production process of PVC complicated, product quality difficult to control, and unable to meet the requirements of standardized production; on the other hand, excessive additives The chemical reaction of the agent will occur at a certain temperature (maybe its own degradation, or a chemical reaction between the additives), which also affects the appearance or performance of the product.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] An acrylate additive for polyvinyl chloride, with an average molecular weight of 9,000,000, obtained by emulsion polymerization of the following parts by mass: 20 parts by mass of ST, 50 parts by mass of MMA and 30 parts by mass of BUA.

[0031] Its preparation method is:

[0032] Add an appropriate amount of demineralized water, 2 parts by mass of sodium lauryl sulfate into the reaction kettle, add 20 parts by mass of a monomer mixture, seal the manhole, start stirring, protect with nitrogen, and heat up to 40°C with steam, add 0.5 Parts by mass of ammonium sulfate or potassium persulfate are used as an initiator, 90 parts by mass of the two-stage monomer mixture is added dropwise at 65° C., reacted for 5 hours, cooled down, and spray-dried to obtain a finished product.

Embodiment 2

[0034] An acrylate additive for polyvinyl chloride, with an average molecular weight of 10,000,000, obtained by emulsion polymerization of the following parts by mass: 30 parts by mass of ST, 50 parts by mass of MMA and 20 parts by mass of BUA.

[0035] Its preparation method is:

[0036] Add an appropriate amount of demineralized water and 4 parts by mass of sodium stearate to the reaction kettle, add 40 parts by mass of a monomer mixture, seal the manhole, start stirring, protect with nitrogen, heat up to 50°C with steam, and add 0.6 parts by mass Ammonium sulfate or potassium persulfate is used as an initiator, 80 parts by mass of the two-stage monomer mixture is added dropwise at 70° C., reacted for 4 hours, cooled, and spray-dried to obtain a finished product.

Embodiment 3

[0038] An acrylate additive for polyvinyl chloride, the average molecular weight of which is 11,000,000, obtained by emulsion polymerization of the following parts by mass: 10 parts by mass of ST, 60 parts by mass of MMA, 10 parts by mass of BUA, 10 parts by mass of EA and 10 parts by mass of AN.

[0039] Its preparation method is:

[0040] Add an appropriate amount of demineralized water and 3 parts by mass of sodium dodecylbenzenesulfonate into the reaction kettle, add 60 parts by mass of a monomer mixture, seal the manhole, start stirring, protect with nitrogen, and heat up to 60°C by passing steam. Add 0.4 parts by mass of ammonium sulfate or potassium persulfate as an initiator, add 70 parts by mass of the two-stage monomer mixture dropwise at 45°C, react for 4.5 hours, cool down, and spray dry to obtain a finished product.

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PUM

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Abstract

The invention relates to a copolymer of methyl methacrylate and acrylic acid esters, in particular to an acrylic acid ester promoter for polyvinyl chloride use. The acrylic acid ester promoter has an average molecular weight of 9,000,000-11,000,000, and is obtained by emulsion polymerization from the following substances by mass parts: 10-30 parts of styrene, 40-90 parts of methyl methacrylate, 5-30 parts of butyl acrylate, 0-10 parts of alpha-methyl styrene, 0-30 parts of ethyl acrylate, 0-30 parts of acrylonitrile, 0-20 parts of 2-ethylhexyl acrylate, and 0-20 parts of vinyl acetate. The invention also discloses a preparation method of the acrylic acid ester promoter and application of the acrylic acid ester promoter in a polyvinyl chloride process and foamed products. The acrylic acid ester promoter has rapid plasticizing speed, good melt fluidity, enough melt intensity, and enough later-period plasticizing ability in the polyvinyl chloride process.

Description

technical field [0001] The invention relates to a copolymer of methyl methacrylate and acrylate, its preparation method and its application as a modifying agent in the processing of rigid polyvinyl chloride products and foamed products. Background technique [0002] Acrylate copolymer (ACR) is the main processing aid material in PVC processing. It can significantly shorten the plasticization time, accelerate melting, and promote plasticization. It can increase the balance torque of extruded products and make the plasticization uniform; For calendered products, adding ACR can overcome surface wrinkles, which is beneficial to material roll wrapping and reduce air bubbles; for vacuum formed products, adding ACR can improve melt extensibility, overcome melt fracture phenomenon, facilitate deep drawing, and make products uniform in thickness. From the appearance of the product, ACR can obviously improve the surface gloss of the product, making the product look smooth and delicate...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F212/08C08F220/18C08F220/44C08F218/08C08F2/22C08L27/06C08L33/12C08J9/00
Inventor 赵圣宝王秋英王可伟周振寰
Owner WUXI CHANGSHENG PLASTICIZING
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