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Calcium and zinc heat stabilizer for PVC and application of calcium and zinc heat stabilizer

A technology of heat stabilizer and main stabilizer, applied in the direction of organic chemistry, etc., can solve the problem of easy breeding of various bacteria, achieve good market application prospects, simplify the formula of antibacterial PVC, and reduce costs.

Active Publication Date: 2016-02-10
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on the nature of PVC as a hydrocarbon and its added organic additives, the surface of its products is more likely to breed various bacteria, which is also an important factor restricting the use of PVC in drinking water pipes and other fields

Method used

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  • Calcium and zinc heat stabilizer for PVC and application of calcium and zinc heat stabilizer
  • Calcium and zinc heat stabilizer for PVC and application of calcium and zinc heat stabilizer
  • Calcium and zinc heat stabilizer for PVC and application of calcium and zinc heat stabilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The preparation of embodiment 1 pipemidic acid calcium

[0039] Mix 3.033g (8.5mmol) pipemidic acid and 150mL water at room temperature 45°C, add 0.6g (15mmol) sodium hydroxide to a 250mL flask, react at 50°C for 2h to generate pipemidic acid sodium salt, and then add Put 1.11g (10mmol) of calcium chloride into the flask, stir and react at 60°C for 12h, and precipitate occurs. Filter the reaction solution with a Buchner funnel, wash the filter cake with hot water at 70°C until there is no chloride ion in the washing liquid, and place in Dry in a vacuum oven at 30°C for 24 hours to obtain 3.1 g of pipemidic acid calcium.

[0040] Metal elements such as calcium and zinc and fluorine elements were determined by X-ray fluorescence spectrometer (ARLADVANT’X, Thermofisher, USA), and the contents of carbon, hydrogen and nitrogen were determined by organic element analyzer (varioMacrocube, Elementar, Germany).

[0041] Elemental analysis results: 6% calcium; 52% carbon; 22% ni...

Embodiment 2

[0042] Embodiment 2 zinc pipemidate

[0043] Mix 3.033g of pipemidic acid (8.5mmol) with 150mL of water at 45°C, add 0.6g (15mmol) of sodium hydroxide in a 250mL flask, and react at 40°C for 1h to generate pipemidic acid sodium salt, then add 2.745 Add g (15mmol) zinc acetate to the flask, continue to stir and react for 4h, and precipitate occurs. The reaction solution is filtered with a Buchner funnel, and the filter cake is washed with hot water at 70°C until there is no acetate ion in the washing liquid, and placed in a vacuum oven at 40°C. After drying for 24 hours, 2.9 g of zinc pipemidate was obtained.

[0044] The element test method is the same as in Example 1.

[0045] Elemental analysis results: 10% zinc; 50% carbon; 20% nitrogen; 6% hydrogen.

Embodiment 3

[0046] Embodiment 3 norfloxacin zinc

[0047] Mix 3.192g (10mmol) of norfloxacin with 190mL of distilled water at 60°C, add 2.12g (20mmol) of sodium carbonate, react at 30°C for 2h, add 1.45g (9mmol) of zinc sulfate, and stir for 6h to produce Precipitate, filter the reaction solution with a Buchner funnel, wash the filter cake with hot water at 70°C until there is no sulfate ion in the washing solution, and dry it in vacuum at 50°C for 12 hours to obtain 3.1 g of norfloxacin zinc.

[0048] The element test method is the same as in Example 1.

[0049] Elemental analysis results: 9% zinc; 5% fluorine; 55% carbon; 12% nitrogen; 6% hydrogen.

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Abstract

The invention provides a calcium and zinc heat stabilizer for PVC and application of the calcium and zinc heat stabilizer. The calcium and zinc heat stabilizer is prepared from 50-80 parts of main stabilizer and 20-50 parts of auxiliary stabilizer. The main stabilizer is prepared from 10-50 parts of quinolone zinc salt and 10-70 parts of quinolone calcium salt. The auxiliary stabilizer is a compound prepared from one or two or more of triphenyl phosphite, epoxidized soybean oil, 2-ethylhexyl epoxystearate, pentaerythritol, dipentaerythritol, sorbitol, trimethylolpropane, dibenzoyl methane, stearoylbenzoylmethane and uracil according to any proportion. The calcium and zinc heat stabilizer for PVC has good PVC heat stabilizing performance and meanwhile has the excellent surface bacterium resisting function.

Description

(1) Technical field [0001] The invention relates to the field of polyvinyl chloride (PVC) heat stabilizers, in particular to an environmentally friendly and highly efficient calcium-zinc heat stabilizer for PVC with antibacterial functions and its preparation and application. (2) Background technology [0002] Polyvinyl chloride (PVC), as one of the five general-purpose resins (PE, PP, PVC, PS, ABS), is widely used all over the world, and its output is now second only to polyethylene. Polyvinyl chloride is widely used in various fields by virtue of its low price and excellent characteristics, such as acid and alkali corrosion resistance, high mechanical strength, and flame retardancy, such as films for industrial and agricultural production, medical infusion bags, pipes, profiles etc. However, when polyvinyl chloride is at 140°C, the chlorine atoms on it will react with the adjacent hydrogen atoms to produce HCl and double bonds, and the hydrogen chloride produced has self-...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K5/3462C08K5/3432C08K5/526C08K5/1515C08K5/053C08K5/06C08K5/07C07D471/04C07D215/56C07D491/056
Inventor 施燕琴王旭陈思马猛吴波震徐晓鹏王慕演应杰
Owner ZHEJIANG UNIV OF TECH
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