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Pasty calcium-zinc composite heat stabilizer and preparation method thereof

A technology of calcium-zinc composite and heat stabilizer, which is applied in the field of pasty calcium-zinc composite heat stabilizer and its preparation, can solve the problems of PVC, difficult to disperse, and difficult to apply transparent products, etc., to improve the thermal stability of PVC, transparent good sex effect

Inactive Publication Date: 2011-06-15
ZHEJIANG HIMPTON NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the plastic category, polyvinyl chloride (PVC) is used the most, accounting for 28%. It has good transparency, flexibility, compatibility, resistance to chemical stress cracking, easy processing, recyclable and low cost, etc. Significant advantages, but the toxicity problem caused by the precipitation of PVC plasticizer phthalates has always plagued the application of PVC in the medical industry
However, most of the calcium-zinc composite stabilizers are powders at present, which are difficult to apply to transparent products and are not easy to disperse during processing.

Method used

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  • Pasty calcium-zinc composite heat stabilizer and preparation method thereof
  • Pasty calcium-zinc composite heat stabilizer and preparation method thereof
  • Pasty calcium-zinc composite heat stabilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] First take 52kg of epoxy soybean oil and 16kg of di-aspartic acid into the reaction kettle, slowly raise the temperature to 70-80°C, then add 2kg of zinc stearate, 6kg of calcium stearate, and 12kg of dibenzoylmethane (DBM) , tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester 8kg and pentaerythritol 4kg, mix, melt, keep temperature at 75 ℃, insulate and stir for 2 hours, cool to room temperature to obtain Paste calcium zinc composite heat stabilizer 100kg.

Embodiment 2

[0066] First take 50kg of epoxidized soybean oil and 16kg of di-aspartic acid into the reaction kettle, slowly raise the temperature to 70-80°C, then add 4kg of zinc stearate, 7kg of calcium stearate, and 12kg of dibenzoylmethane (DBM) , tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol 8kg and sorbitol 4kg, mix, melt, keep temperature at 75 ℃, insulate and stir for 2.5 hours, cool to Room temperature obtains 101kg of pasty calcium-zinc composite heat stabilizer.

Embodiment 3

[0068] First take 52kg of epoxy castor oil and 16kg of non-toxic phosphite into the reaction kettle, slowly raise the temperature to 70-80°C, then add 4kg of zinc stearate, 8kg of calcium stearate, dibenzoylmethane (DBM) 11kg, tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol 7kg and sorbitol 4kg, mix, melt, keep the temperature at 75°C, keep stirring for 3 hours, and cool Obtain pasty calcium-zinc composite heat stabilizer 102kg to room temperature.

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Abstract

The invention provides a pasty calcium-zinc composite heat stabilizer and a preparation method thereof. The composite heat stabilizer comprises the following raw materials in a mass ratio: 2-10 parts of zinc stearate, 6-13 parts of calcium stearate, 45-52 parts of epoxy compound, 14-16 parts of chelating agent, 10-12 parts of beta-diketone, 6-8 parts of antioxidant and 2-4 parts of polyalcohol. The pasty calcium-zinc composite heat stabilizer provided by the invention conforms to environmental protection requirements, is applied to the fields of medical treatment and public health and has the main advantages that each component of the pasty calcium-zinc composite heat stabilizer system has appropriate calcium soap to zinc soap ratio and various auxiliary stabilizing groups. By means of the synergistic effect of the components, the zinc burning phenomenon of the system can be effectively delayed, and the thermal stability of PVC (Poly Vinyl Chloride) can be increased. Moreover, assistants selected for the system have closer refractive indexes to PVC resin, so that prepared PVC products have good transparency.

Description

(1) Technical field [0001] The invention relates to a paste calcium-zinc composite heat stabilizer and a preparation method thereof, in particular to a paste calcium-zinc composite heat stabilizer for polyvinyl chloride (PVC) and a preparation method thereof. (2) Background technology [0002] In recent years, the global medical plastic products market has developed rapidly, which has brought huge market opportunities to the medical products industry. In the next few years, China will surpass Japan to become the world's second largest medical equipment market. By 2010, the total output value of China's medical equipment will reach 100 billion yuan, of which medical plastics will increase by 15% to 20% every year. In the plastic category, polyvinyl chloride (PVC) is used the most, accounting for 28%. It has good transparency, flexibility, compatibility, resistance to chemical stress cracking, easy processing, recyclable and low cost, etc. It has obvious advantages, but the ...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K5/00C08K5/098C08K5/1515C08K5/134C08K5/053C08K5/524C08K5/13
Inventor 高尔金唐伟孟建新陈建军梁生贵瞿英俊
Owner ZHEJIANG HIMPTON NEW MATERIAL
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