Weather resistant, impact resistant and economical PVC promoter

An economical and weather-resistant technology, applied in the field of processing aids for PVC products, can solve the problems of limited improvement in impact resistance, unsatisfactory impact strength, high price, etc., and achieve excellent impact resistance and weather resistance , Excellent powder fluidity, and the effect of reducing production costs

Inactive Publication Date: 2008-12-24
SHANDONG RUIFENG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyvinyl chloride (pvc) is a general-purpose plastic with excellent cost performance. The impact strength of PVC products is not very satisfactory. Although the impact strength of products can be improved by adding CPE, MBS or high-impact ACR resin, CPE The price is low, the output is large, the application range is wide, and it does not contain carbon-carbon double bonds, but the impact resistance of CPE products is limited; MBS cannot improve the UV resistance of polybutadiene due to its main component pol

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] According to the above process, based on 100% of the total weight of polymerized monomers, butyl acrylate accounts for 30%, chlorinated polyethylene accounts for 30%, octyl acrylate accounts for 35%, and methyl methacrylate accounts for 5%. The surfactant is sodium lauryl sulfate, accounting for 1% of the total amount of polymerized monomers, and the initiator is potassium persulfate, accounting for 0.02% of the total amount of polymerized monomers.

Embodiment 2

[0013] According to the above process, based on 100% of the total weight of polymerized monomers, butyl acrylate accounts for 35%, chlorinated polyethylene accounts for 35%, octyl acrylate accounts for 20%, and methyl methacrylate accounts for 10%. The surfactant is sodium lauryl sulfate, which accounts for 2% of the total amount of polymerized monomers, and the initiator is ammonium persulfate, which accounts for 0.04% of the total amount of polymerized monomers.

Embodiment 3

[0015] According to the above process, based on 100% of the total weight of polymerized monomers, butyl acrylate accounts for 40%, chlorinated polyethylene accounts for 30%, octyl acrylate accounts for 15%, and methyl methacrylate accounts for 15%. Potassium stearate is used as the surfactant, accounting for 1.5% of the total amount of polymerized monomers, and potassium persulfate is used as the initiator, accounting for 0.01% of the total amount of polymerized monomers.

[0016] The copolymer obtained in the above Examples 1-3 (hereinafter referred to as auxiliary agent) was formulated as a polyvinyl chloride test material according to the following formula.

[0017] 100 parts polyvinyl chloride

[0018] Auxiliary 9 parts

[0019] Calcium carbonate 5 parts

[0020] Tribasic lead sulfate 3 parts

[0021] Dibasic lead phosphite 2 parts

[0022] Calcium stearate 0.6 part

[0023] 0.8 parts of lead stearate

[0024] Polyethylene wax 0.15 parts

[0025] Stearic acid 0.1 pa...

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PUM

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Abstract

The invention relates to a PVC auxiliary agent with good weathering resistance, shock resistance and economical efficiency, which is characterized in that: the PVC auxiliary agent is a copolymer with a nuclear shell structure, wherein, a nuclear layer of the PVC auxiliary agent is formed by emulsion polymerization of butyl acrylate, chlorinated polyethylene and 2-ethyl hexyl acrylate under the protection of a surfactant and nitrogen and through initiation of an initiator, and a core shell is formed by continuous emulsion polymerization and grafting reaction of methyl methacrylate on the nuclear layer. By adoption of the total weight of a monomer polymer as 100 percent, the butyl acrylate occupies 30 to 40 percent; the chlorinated polyethylene occupies 30 to 40 percent; the 2-ethyl hexyl acrylate occupies 15 to 35 percent; and the methyl methacrylate occupies 5 to 20 percent. The PVC auxiliary agent has superior shock resistance and weathering resistance and simultaneously has superior powder fluidity, and the shock resistance of the PVC auxiliary agent is higher than that of MBS and acrylic ester shock modifiers which are widely applied in the industry.

Description

technical field [0001] The invention belongs to a processing aid for PVC products, in particular to a PVC additive with excellent weather resistance, impact resistance and economical efficiency. Background technique [0002] Polyvinyl chloride (pvc) is a general-purpose plastic with excellent cost performance. The impact strength of PVC products is not very satisfactory. Although the impact strength of products can be improved by adding CPE, MBS or high-impact ACR resin, CPE The price is low, the output is large, the application range is wide, and it does not contain carbon-carbon double bonds, but the impact resistance of CPE products is limited; MBS cannot improve the UV resistance of polybutadiene due to its main component polybutadiene. The weather resistance of the product; although the high impact ACR resin has impressive weather resistance because it does not have carbon-carbon double bonds, it is limited by the price limit of the raw material market, and there are in...

Claims

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Application Information

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IPC IPC(8): C08F220/16C08F210/02C08F2/24C08L27/06
Inventor 刘春信赵立峰丁锋徐勤国蔡全国程东法
Owner SHANDONG RUIFENG CHEM
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