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Sn-Sb-Zn composite heat stabilizer for polyvinyl chloride (PVC) sheets and preparation method and application thereof

A composite heat stabilizer, sn-sb-zn technology, applied in the field of plastic processing, can solve the problem of high melting point, achieve high product transparency, stable process conditions, and reduce consumption

Inactive Publication Date: 2012-09-19
ZHEJIANG HIMPTON NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN 1631963A proposes to form Ca-Zn-Sn composite stabilizer with calcium stearate, zinc stearate and organotin, but because calcium stearate and zinc stearate have higher melting points, it is difficult to dissolve in organotin, so Only solid stabilizers can be made

Method used

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  • Sn-Sb-Zn composite heat stabilizer for polyvinyl chloride (PVC) sheets and preparation method and application thereof
  • Sn-Sb-Zn composite heat stabilizer for polyvinyl chloride (PVC) sheets and preparation method and application thereof
  • Sn-Sb-Zn composite heat stabilizer for polyvinyl chloride (PVC) sheets and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Take 10kg of methyl tin mercaptoacetate and 40kg of isooctyl antimony trimercaptoacetate respectively, mix them and put them into the reaction kettle, control the stirring speed at 80r / min, control the temperature at 65°C, mix and hold the time for 0.5h, and then put in iso Zinc octoate 5kg, mixed for 1h, then cooled and filtered to obtain 55kg of colorless transparent liquid Sn-Sb-Zn methyl tin composite heat stabilizer, and the tin content was detected in Table 1.

Embodiment 2

[0042] Take 15kg of methyl tin thioglycolate and 45kg of isooctyl antimony pentathioglycolate, mix them and put them into the reaction kettle, control the stirring speed at 90r / min, control the temperature at 75°C, mix and hold for 1h, and then put in isooctanoic acid 10kg of zinc was mixed for 1h, then cooled and filtered to obtain 70kg of colorless transparent liquid Sn-Sb-Zn methyl tin composite heat stabilizer, and the tin content was detected in Table 1.

Embodiment 3

[0044] Take 17kg of methyl tin thioglycolate and 50kg of antimony ethyl pentathioglycolate respectively, mix them and put them into the reaction kettle, control the stirring speed at 100r / min, control the temperature at 85°C, mix and hold for 1.5h, and then put in oleic acid 15kg of zinc was mixed for 1.5h, then cooled and filtered to obtain 82kg of colorless transparent liquid Sn-Sb-Zn methyl tin composite heat stabilizer, and the tin content was detected in Table 1.

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PUM

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Abstract

The invention discloses a Sn-Sb-Zn composite heat stabilizer for polyvinyl chloride (PVC) sheets. The Sn-Sb-Zn composite heat stabilizer comprises, by weight, 10-20 parts of thioglycolic acid methyl tin, 40-60 parts of thioglycolic acetic ester antimony and 5-15 parts of organic acid zinc salt. The invention further discloses the preparation method of the Sn-Sb-Zn composite heat stabilizer and application of the Sn-Sb-Zn composite heat stabilizer as a PVC stabilizer. The composite heat stabilizer is high in product quality, low in toxicity, environment-friendly, less in tin content in a formula and applicable to various PVC hard sheet materials, has good initial and long-term heat stability, and is high in product transparency.

Description

(1) Technical field [0001] The invention relates to plastic processing technology, in particular to a Sn-Sb-Zn composite heat stabilizer for PVC sheets and a preparation method thereof. (2) Background technology [0002] Polyvinyl chloride (PVC) is widely used in insulation materials, building materials and daily-use plastic products because of its low price and excellent performance. In recent years, my country's total demand for PVC is still showing a stable double-digit growth trend. However, due to structural defects in the PVC molecular chain, hydrogen chloride will be released when heated to 110°C, and the released hydrogen chloride will accelerate the decomposition of PVC. Decrease in mechanical properties, etc., will affect service life. In order to prevent PVC from degrading during processing, heat stabilizers need to be added. Commonly used heat stabilizers include lead salts, metal soaps, rare earths, and organic tins. [0003] In recent years, PVC heat stabili...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K5/59C08K5/098
Inventor 高尔金瞿英俊唐伟周天红陈建军
Owner ZHEJIANG HIMPTON NEW MATERIAL
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