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Hydrotalcite composite heat stabilizer and application thereof

A technology of compound heat stabilizer and auxiliary heat stabilizer, which is applied in the field of hydrotalcite compound heat stabilizer, can solve the problems of short heat stabilization time, poor colorability, and high cost, achieve good compatibility, reduce plastic torque, and improve heat stability. sexual effect

Active Publication Date: 2013-11-13
江苏爱特恩高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composite heat stabilizer not only does not need to use rare earth materials, but also solves the common shortcomings of traditional heat stabilizers such as toxicity, cost, poor colorability, and short thermal stability time, and there will be no composite melt viscosity after adding halogen-containing polyolefin increase, increased torque, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: The ratio of the composite heat stabilizer is: 60% of magnesium aluminum hydrotalcite, 20% of metal calcium terephthalate, 15% of paraffin and 5% of stearyl benzoylmethane.

[0022] Add 50 parts of water to 1 part of magnesium aluminum hydrotalcite, heat up to 100°C, add 5% sodium stearate, stir for 4 hours, wash, filter and dry to obtain modified magnesium aluminum hydrotalcite. The obtained product is fully mixed with metal calcium terephthalate and stearyl benzoylmethane in a reaction kettle, then moved to a kneader for heating and stirring, adding paraffin, kneading at 90°C for 20 minutes, discharging and pressing into tablets. .

[0023] Add 60 parts of di-n-octyl phthalate (DOP) and 5.5 parts of composite heat stabilizer to 100 parts of PVC powder, mix at high speed for 5 minutes, knead on a double-roller mill at 200°C for 5 minutes, and make tablets.

Embodiment 2

[0024] Embodiment 2: The ratio of the composite heat stabilizer is: 50% of calcium-zinc hydrotalcite, 5% of metal magnesium terephthalate, 20% of polyethylene wax and 25% of dibenzoylmethane.

[0025] Add 40 parts of water to 1 part of calcium-zinc hydrotalcite, heat up to 90°C, add 4% sodium stearate, stir for 3 hours, wash, filter and dry to obtain modified calcium-zinc hydrotalcite. The obtained product is fully mixed with metal magnesium terephthalate and dibenzoylmethane in a reaction kettle, and then moved to a kneader for heating and stirring, adding polyethylene wax, kneading at 100°C for 20 minutes, discharging and pressing into tablets. .

[0026] Add 50 parts of di-n-octyl phthalate (DOP) and 4.5 parts of composite heat stabilizer to 100 parts of PVC powder, mix at high speed for 4 minutes, knead on a double-roller mill at 190°C for 4 minutes, and make tablets.

Embodiment 3

[0027] Embodiment 3: The ratio of the composite heat stabilizer is: 40% of calcium magnesium hydrotalcite, 40% of metal aluminum terephthalate, 10% of stearic acid and 10% of isovalerylbenzoylmethane.

[0028] Add 30 parts of water to 1 part of calcium magnesium hydrotalcite, heat up to 80°C, add 3% sodium stearate, stir for 2 hours, wash, filter and dry to obtain modified calcium magnesium hydrotalcite. The resulting product is fully mixed with metal aluminum terephthalate and isovalerylbenzoylmethane in a reaction kettle. After fully mixed, move to a kneader for heating and stirring, add stearic acid, knead at 80°C for 20 minutes, discharge and press into tablets be made of.

[0029] Add 40 parts of di-n-octyl phthalate (DOP) and 3.5 parts of composite heat stabilizer to 100 parts of PVC powder, mix at high speed for 5 minutes, knead on a double-roll mill at 180°C for 4 minutes, and make tablets.

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PUM

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Abstract

The invention relates to a hydrotalcite composite heat stabilizer. The hydrotalcite composite heat stabilizer is characterized by containing hydrotalcite, an auxiliary heat stabilizer, a lubricating agent and a terephthalic acid metal salt. The composite heat stabilizer provided by the invention can effectively improve heat stability of halogen-containing polyolefin; and the composite heat stabilizer has the advantages of good dissolvability with the halogen-containing polyolefin, good processing performances, good plasticizing performance, effects of preventing increasing the viscosity of a composite melt and effectively reducing the torque of plastic, and no toxicity and pollution in materials and process.

Description

technical field [0001] The invention relates to a hydrotalcite composite thermal stabilizer and its application. Background technique [0002] Under the condition of light or heating, halogen-containing polyolefin will undergo autocatalytic reaction of removing HCl, which will directly lead to darkening of product color and great damage to structure and performance. Therefore, heat stabilizer must be added during processing to prevent Prevent or delay its degradation. [0003] Commonly used heat stabilizers include lead salts, metal soaps, organotins, composite heat stabilizers and other additives. Lead salt heat stabilizers have good thermal stability, good electrical insulation and weather resistance, and are cheap, but lead is poisonous, not only limited in application in food-related products, but also in almost all Applications in the product are restricted. In addition, lead salt heat stabilizers are also susceptible to sulfur contamination and invalidation. Metal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K13/06C08K9/04C08K3/26C08K5/07C08K5/098C08L27/06B29B7/72
Inventor 丁玉兰方春平
Owner 江苏爱特恩高分子材料有限公司