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Powdery calcium-zinc complex heat stabilizer and preparation method and application thereof

A technology of calcium-zinc composite heat stabilizer, which is applied in the field of powder calcium-zinc composite heat stabilizer and its preparation, can solve the problems of insufficient initial and long-term stability, vacancy, and inability to meet market demand, etc., and achieve the improvement of initial and long-term Thermal stability, improvement of dispersion performance and processability, effect of delaying zinc burning phenomenon

Inactive Publication Date: 2012-06-20
ZHEJIANG HIMPTON NEW MATERIAL
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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 processing Enterprises are difficult to accept
However, the initial and long-term stability of the domestic calcium-zinc composite heat stabilizer is not enough. For a long time, it has been mostly used in PVC soft products with low heat stability requirements or as an auxiliary heat stabilizer, which has been limited.
In particular, the current excellent calcium-zinc composite heat stabilizer products used for rigid polyvinyl chloride (PVC-U) products such as profiles, pipes, pipe fittings, etc. are still vacant and cannot meet market demand

Method used

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  • Powdery calcium-zinc complex heat stabilizer and preparation method and application thereof
  • Powdery calcium-zinc complex heat stabilizer and preparation method and application thereof
  • Powdery calcium-zinc complex heat stabilizer and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] First take 8kg of epoxidized soybean oil into the reaction kettle, slowly raise the temperature to 50°C, then add 20kg of zinc stearate, 15kg of calcium stearate, 25kg of dibenzoylmethane, and 6kg of 2,6-di-tert-butyl-p-cresol , 15kg of pentaerythritol, 16kg of modified hydrotalcite (Dalian Haichen Chemical Mineral Co., Ltd.) and 15kg of polyethylene wax were mixed, melted, kept at 50°C and stirred for 2 hours, and the reaction mixture was cooled to room temperature to obtain a powder calcium-zinc composite thermal stabilizer 120kg.

Embodiment 2

[0035] First take 7kg of epoxy castor oil into the reactor, slowly heat up to 60°C, then add 22kg of zinc stearate, 16kg of calcium stearate, 23kg of stearoylbenzoylmethane, tetrakis [β-(3,5 -di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester 5kg, sorbitol 15kg, modified hydrotalcite (Dalian Haichen Chemical Mining Co., Ltd.) 16kg mixes with oxidized polyethylene wax 14kg, melts, keeps The temperature was stirred at 60° C. for 3 hours, and the reaction mixture was cooled to room temperature to obtain 118 kg of powder calcium-zinc composite thermal stabilizer.

Embodiment 3

[0037] First take 6kg of epoxy linseed oil into the reaction kettle, slowly raise the temperature to 70°C, then add 24kg of zinc stearate, 20kg of calcium stearate, 22kg of dibenzoylmethane, tris[2.4-di-tert-butylphenyl] 4kg of phosphite, 14kg of maltitol, 15kg of modified zeolite (Ninghai County Jiahe Chemical Co., Ltd.) and 13kg of monoglyceride stearate were mixed, melted, kept at 70°C and stirred for 4 hours, and the reaction mixture was cooled to room temperature to obtain a powder Calcium-zinc composite heat stabilizer 118kg.

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Abstract

The invention discloses a powdery calcium-zinc complex heat stabilizer, which comprises the following components in weight ratio: 20-30 parts of zinc stearate, 15-25 parts of calcium stearate, 4-8 parts of epoxy compound, 15-25 parts of beta-diketone, 2-6 parts of antioxidant, 10-15 parts of polyatomic alcohol, 12-16 parts of inorganic assistant and 10-15 parts of lubricant. The powdery calcium-zinc complex heat stabilizer disclosed by the invention is capable of effectively delaying the generation of zinc-burning phenomenon of a system and improving the initial-stage and long-term heat stability of polyvinyl chloride (PVC), and moreover, the system has a good lubrication component, thus, the dispersion property and the processing property of the system in resin can be improved, thereby being beneficial to reducing energy consumption.

Description

(1) Technical field [0001] The invention relates to a powder calcium-zinc composite heat stabilizer and a preparation method thereof, in particular to a powder calcium-zinc composite heat stabilizer for rigid polyvinyl chloride (PVC-U) and a preparation method thereof. (2) Background technology [0002] Since the mid-1950s, my country began to independently produce PVC heat stabilizers, the consumption of heat stabilizers has increased significantly with the rapid development of the PVC industry, and has developed into the second largest category of plastic additives. Traditional heavy metal salt heat stabilizers containing lead, barium, and cadmium silver pollute the environment and affect human health, and are now banned from use. Organotins have good thermal stability, but some are toxic, have peculiar smell, and are easy to pollute. Calcium zinc heat stabilizer is a non-toxic, environment-friendly heat stabilizer recognized in the world, and has the advantages of low pr...

Claims

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Application Information

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IPC IPC(8): C08K13/02C08K9/04C08K5/00C08K5/098C08K5/07C08K3/34C08K5/053C08K5/1545C08L27/06
Inventor 高尔金孟建新唐伟瞿英俊陈建军
Owner ZHEJIANG HIMPTON NEW MATERIAL
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