Sodium-zinc PVC stabilizer and method for preparing same

A stabilizer, sodium-zinc technology, applied in the field of PVC heat stabilizer preparation, can solve the problems of good initial heat resistance, poor initial heat resistance, poor long-term heat resistance, etc., and achieve the effect of process safety and simple process

Active Publication Date: 2010-05-26
江苏嘉仁禾科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the shortcomings of the traditional calcium-zinc stabilizer, such as zinc soap, which has good initial heat resistanc

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1: Preparation of sodium zinc stabilizer

[0021] 1. Preparation of zinc intermediate (CZ-109)

[0022] Add 389kg of isooctanoic acid, 144kg of antioxidant, 0.018kg of defoamer, 116kg of zinc oxide and 2.16kg of filter aid into the reaction tank. After stirring the reaction for twenty minutes. Reduce the stirring speed, slowly increase the temperature to 115-125°C, and start vacuuming, and maintain it at 120°C and -0.9MPa until the weight of the extracted distilled water reaches 22.8kg. Add isooctanoic acid to supplement the weight of distilled water and stir for ten minutes. The air is pressurized to drive the contents of the reaction tank into the discharge tank. After filtering until the filtrate is completely clear, a zinc intermediate is obtained.

[0023] 2. Preparation of sodium intermediate (CA-106):

[0024] Add 819 kg of isooctanoic acid, 313 kg of kerosene, 213 kg of sodium hydroxide, 313 kg of dibutyl maleate and 6.69 kg of filter aid into the reaction t...

Example Embodiment

[0027] Example 2: Preparation of sodium zinc stabilizer

[0028] 1. Preparation of zinc intermediate (CZ-109)

[0029] Add 395kg isooctanoic acid, 148kg antioxidant, 0.029kg defoamer, 120kg zinc oxide and 2.88kg filter aid into the reaction tank. Start stirring and react for twenty minutes. Reduce the stirring speed, slowly increase the temperature to 115-125°C, and start vacuuming, and maintain it at 120°C and -0.9MPa until the weight of the extracted distilled water reaches 23.30kg. Add isooctanoic acid to supplement the weight of distilled water and stir for ten minutes. The air is pressurized to drive the contents of the reaction tank into the discharge tank. After filtering until the filtrate is completely clear, a zinc intermediate is obtained.

[0030] 2. Preparation of sodium intermediate (CA-106):

[0031] Add 843 kg of isooctanoic acid, 333 kg of kerosene, 240 kg of sodium hydroxide, 333 kg of dibutyl maleate and 6.69 kg of filter aid into the reaction tank. Start stirr...

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PUM

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Abstract

The invention discloses a sodium-zinc PVC stabilizer and a method for preparing the same, and belongs to the technical field of PVC thermal stabilizer preparation. The method for preparing the same comprises the following steps: adding iso-octoic acid, antioxidant, defoaming agent, zinc oxide and filtration aid in proportion, stirring the mixture for 10 to 20 minutes, heating the mixture to 110 to 130 DEG C, adding iso-octoic acid in the same weight as the extracted distilled water after vacuumizing, stirring again to obtain zinc intermediate; adding iso-octoic acid, coal oil, sodium hydroxide, dibutyl maleate and filtration aid in proportion, stirring the mixture for 10 to 20 minutes, heating the mixture to 110 to 130 DEG C, adding coal oil in the same weight as the extracted distilled water after vacuumizing, stirring again to obtain sodium intermediate; and combining the obtained zinc intermediate and sodium intermediate, adding phosphorous acid ester and acrylic resin, heating the mixture to 100 to 110 DEG C, then stirring the mixture for 10 to 20 minutes, and cooling to obtain Na/Zn stabilizer. The method has the advantages of simple process, safe technique and capability of producing Na/Zn stabilizer on a large scale.

Description

technical field [0001] The invention belongs to the technical field of PVC heat stabilizer preparation, in particular to the preparation of a non-toxic, high-transparency sodium-zinc PVC stabilizer. Background technique [0002] In recent years, the world's total demand for PVC is still showing a growing trend. Because PVC plastic has the advantages of self-extinguishing, flame retardant, wear-resistant, high strength, good electrical insulation and chemical stability, and low price, It is widely used, but due to the special structure of PVC, the thermal stability is poor during processing, and it will cause discoloration, thermal degradation and other deterioration phenomena during use. A certain amount of heat stabilizer needs to be added during processing to inhibit It degrades, increasing its thermal stability. [0003] At present, my country's sodium-zinc stabilizers are still in the research and development stage, and most PVCs use calcium-zinc stabilizers in the proc...

Claims

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Application Information

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IPC IPC(8): C08K5/098C08K5/524C08L33/02C08L27/06
Inventor 沈卫锋
Owner 江苏嘉仁禾科技有限公司
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