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Method for preparing Ca-Zn composite heat stabilizer

A heat stabilizer and calcium-zinc composite technology, which is applied in the field of preparation of calcium-zinc composite heat stabilizers, can solve the problems of product post-processing difficulties, catalysts cannot be removed, and product appearance quality is poor, so as to avoid post-processing steps, oxidation less, better results

Active Publication Date: 2010-12-15
ZHEJIANG TRANSFAR WHYYON CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The output of calcium-zinc synthesis in the first part of the process is relatively large, but the post-treatment of the product is relatively difficult, and it needs to be cooled and precipitated, and it is easy to generate dust when crushed, and the crushing to the specified fineness requires high equipment and energy consumption. also increased accordingly
Due to the reaction at a higher temperature (generally between 150°C and 170°C), the color is relatively poor, and the catalyst cannot be removed, which affects the use effect; in the latter step of compounding, due to the mixing of solids, it is easy to cause mixing Uneven, the apparent quality of the product is poor, and affects the final use effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. Turn on the steam in the kneading pot. After preheating for 15 minutes, add 826.8KG of stearic acid measured, turn on two horizontal stirring paddles, control the stirring speed at 30-80 rpm, and then add 46.8KG of calcium oxide, Zinc oxide 63.8KG, after the feeding is completed, start to heat up, the temperature rises to 120 ℃, and the reaction is qualified for 40 minutes.

[0030] 2. Add 7.71KG of ammonia water for modification to the product obtained in the previous step, 10KG of glyceryl monostearate, C 16 -C 18 60KG of natural fatty alcohol (stearic acid has been put in at the same time as feeding for the first time), put in 300KG of hydrotalcite, keep warm for 20 minutes, and continue to put in the rest of the auxiliary raw materials: 90KG of pentaerythritol, 270KG of polyethylene wax, 120KG of paraffin wax, stearyl benzyl Acyl methane 60KG, heat preservation and stirring for 40 minutes after completion.

[0031] 3. Turn on the cooling slicer corresponding to...

Embodiment 2

[0033] 1. Turn on the steam in the kneading pot. After preheating for 15 minutes, add 738.5KG of stearic acid that has been measured, turn on two horizontal stirring paddles, and then add 41.0KG of calcium oxide and 65.8KG of zinc oxide at the same time. After feeding, start to heat up , the temperature rises to 120°C, and the reaction is qualified for 40 minutes.

[0034] 2. Add glyceryl monostearate 30KG, C for modification in the product obtained in the previous step16 -C 18 50KG of natural fatty alcohol (stearic acid has been put in at the same time as the first feeding), put in 300KG of hydrotalcite, keep warm for 20 minutes, and continue to put in the rest of auxiliary raw materials: 90KG of pentaerythritol, 200KG of polyethylene wax, 120KG of paraffin wax, 60KG of oxidized polyethylene wax , stearyl benzoyl methane 60KG, after the completion of the insulation and stirring for 40 minutes.

[0035] 3. Turn on the cooling slicer corresponding to the kneading pot, turn on ...

Embodiment 3

[0037] 1. Turn on the steam in the kneading pot. After preheating for 15 minutes, add 664.8KG of stearic acid that has been measured, turn on two horizontal stirring paddles, and then add 46.8KG of calcium oxide and 39.9KG of zinc oxide at the same time. After feeding, start to heat up , the temperature rises to 120°C, and the reaction is qualified for 40 minutes.

[0038] 2. Add 7.71KG of ammonia water for modification, 10KG of glyceryl monostearate, C 16 -C 18 30KG of natural fatty alcohol (stearic acid has been put in at the same time as feeding for the first time), put in 270KG of hydrotalcite, keep warm for 20 minutes, and continue to put in the remaining auxiliary raw materials: 9KG of triphenyl phosphite, 90KG of pentaerythritol stearate, polyethylene 180KG of wax, 100KG of paraffin wax, 60KG of paraffin wax, 80KG of stearyl benzoylmethane, and keep stirring for 40 minutes after completion.

[0039] 3. Turn on the cooling slicer corresponding to the kneading pot, turn...

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Abstract

The invention discloses a preparation method for a Ca-zinc complex heat stabilizer. The complex formulation of current technology is carried out at a solid state, which is hard to mix completely evenly, thus realizing optimal effects. The invention puts fatty acid of C16-C18 and calcium and zinc oxide into a kneading pot. The kneading pot uses a horizontal type double stirring; temperature rises with the stirring; the highest temperature is controlled between 100 DEG C to 120 DEG C, thus synthesis of fatty acid calcium and fatty acid zinc is finished within one step; after the fatty acid calcium and fatty acid zinc being qualified, houghite and a modifying agent are added at a meltdown state; the modifying agent is used to modify the houghite; at a meltdown state, the houghite and a modifying agent are added into the product for mixing and dissolving, and finally cooling and slicing are carried out, and particle shaped solid products are extruded through an extruder. The complex formulation of the invention is carried out at the meltdown state, thus making lubricant and an auxiliary stabilizing agent completely melt down, realizing real complete even mixing and dissolving, and making cooperated effects bring into play to a maximum.

Description

technical field [0001] The invention relates to the preparation of a heat stabilizer, in particular to a preparation method of a calcium-zinc composite heat stabilizer. Background technique [0002] Heat stabilizers are mainly used in the processing of polyvinyl chloride and vinyl chloride to avoid degradation of polyvinyl chloride and vinyl chloride at processing temperatures. Heat stabilizers mainly include lead salts, organic tin, organic antimony and calcium-zinc composite heat stabilizers Wait. [0003] Lead salt and composite lead salt stabilizers are the most commonly used stabilizers, which have excellent heat resistance and are especially suitable for high temperature processing. However, it has the disadvantages of being opaque and toxic, and its application is limited in some occasions with high hygienic requirements in today's environment where the calls for environmental protection are getting higher and higher. [0004] Organotin stabilizers not only have goo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/00C08K5/098C08L27/06C08K13/06
Inventor 巫书刚竹百均肖锦平
Owner ZHEJIANG TRANSFAR WHYYON CHEM
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