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Environmental-friendly dust-free calcium-zinc composite heat stabilizer for PVC processing

A technology of calcium-zinc composite and heat stabilizer, which is applied in the field of special chemicals, can solve the problems of not being able to meet the market demand and the performance of calcium-zinc stabilizer is not mature enough, and achieve the goal of reducing processing energy consumption, reducing production cost and shortening the process flow Effect

Active Publication Date: 2009-12-16
九江天盛塑料助剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Calcium-zinc stabilizers have been widely used in foreign countries. Under the general trend of my country's current and future environmental protection, it has also become the first choice for lead stabilizer substitutes in various processing enterprises. However, the high price of imported calcium-zinc stabilizers makes most PVC products It is difficult for processing enterprises to accept it, and the performance of domestic calcium-zinc stabilizers currently on the market is not mature enough to meet market demand

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Put 575Kg of stearic acid into the reaction kettle, put in 55Kg of zinc oxide after melting, raise the temperature to 130°C, put in 20Kg of hydrogen peroxide, and react at 130°C for 15 minutes, until the material is clarified, put in 25Kg of calcium hydroxide, react for 15 minutes, until the phase is uniform, Add 200Kg of polyethylene wax, 150Kg of pentaerythritol, and 50Kg of triphenyl phosphite in sequence, discharge after stirring evenly, and make tablets to obtain the product of the present invention.

Embodiment 2

[0036] Put 290Kg of stearic acid and 265Kg of lauric acid into the reaction kettle, put in 63Kg of zinc oxide after melting, raise the temperature to 130°C, put in 20Kg of hydrogen peroxide, and react at 140°C for 20min until the material is clarified, put in 30Kg of calcium hydroxide, and react for 20min to The material phase is uniform, successively put in 100Kg of polyethylene wax, 25Kg of stearyl alcohol, 25Kg of glyceryl monostearate, 100Kg of dipentaerythritol, 100Kg of hydrotalcite, and 40Kg of trinonylphenyl phosphite. After reaching room temperature, it is transferred to a mixer, and 10Kg of dibenzoylmethane is put in, mixed evenly, and discharged to obtain a finished product.

Embodiment 3

[0038]Put 850Kg of stearic acid into the reaction kettle, heat up to make it melt, drop 30Kg of a mixed solution containing 70% acetic acid, 29% hydrogen peroxide and 1% sulfuric acid at 90°C, and drop 170Kg of lanthanum oxide at 95°C. Insulated and reacted for 3 hrs, discharged into tablets to obtain the intermediate lanthanum stearate for later use.

[0039] Put 360Kg of palmitic acid into the reaction kettle, put in 40Kg of zinc oxide after melting, raise the temperature to 130°C, put in 18Kg of a mixture of hydrogen peroxide and acetic acid with a mass ratio of 3:1, and react at 130°C for 25min until the material is clarified, put in hydrogen oxidation Calcium 15Kg, react for 25min, until the material phase is uniform, add polyethylene wax 150Kg, stearyl alcohol 25Kg, glyceryl monostearate 25Kg, lanthanum stearate 50Kg, ST-220100Kg, hydrotalcite 50Kg, zeolite 50Kg, phosphorous acid 50Kg of 1-benzenediisooctyl, stirred evenly, discharged, made into tablets, cooled to room t...

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PUM

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Abstract

The invention relates to an environmental-friendly dust-free calcium-zinc composite heat stabilizer for PVC processing, which comprises the following components: 20 to 80 percent of metallic soap of main stabilizer, 10 to 60 percent of auxiliary stabilizer and 5 to 30 percent of lubricant. The invention also provides a preparation method of the heat stabilizer. The environmental-friendly dust-free calcium-zinc composite heat stabilizer has the advantages of meeting the requirements for environmental protection, along with excellent thermal stability, low cost of production and use, high efficiency and innocuity.

Description

Technical field: [0001] The invention belongs to the field of special chemicals, and in particular relates to a heat stabilizer required for the production of PVC products. technical background: [0002] The production of PVC (polyvinyl chloride) products requires the use of heat stabilizers to delay or prevent the zipper degradation of PVC molecules during thermal processing and prolong the service life of the products. PVC heat stabilizers can be divided into lead, cadmium, metal soap, organotin, etc. according to their components, among which lead stabilizers are the most widely used. However, in recent years, with the continuous deterioration of the ecological environment, people's understanding of environmental protection issues has become increasingly profound, and various environmental protection regulations have been increasingly improved. Heavy metal salt stabilizers such as lead and cadmium are gradually being replaced by environmentally friendly stabilizers that d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/00C08K5/098C08K5/053C08K5/526C08L23/06C08K13/02C08L27/06C07C51/41
Inventor 晏苏学林强潘小文
Owner 九江天盛塑料助剂有限公司
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