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Preparation method of oil/rosin base liquid calcium-zinc composite stabilizing agent used for PVC (Polyvinyl Chloride)

A technology of compounding heat stabilizer and liquid calcium and zinc, applied in the field of plastic additives, can solve the problem of price fluctuation of stabilizer, and achieve the effects of excellent thermal stability, reduced pollution, good thermal stability and toughness

Active Publication Date: 2012-12-26
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, most of the liquid calcium-zinc composite heat stabilizers on the market contain a large amount of solvents, and most of the organic acids used in them are derived from petroleum resources. As the price of petroleum rises, the price of stabilizers will inevitably fluctuate accordingly.

Method used

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  • Preparation method of oil/rosin base liquid calcium-zinc composite stabilizing agent used for PVC (Polyvinyl Chloride)
  • Preparation method of oil/rosin base liquid calcium-zinc composite stabilizing agent used for PVC (Polyvinyl Chloride)
  • Preparation method of oil/rosin base liquid calcium-zinc composite stabilizing agent used for PVC (Polyvinyl Chloride)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) In an autoclave equipped with a stirring device and a thermometer, add 282g of industrial fatty acid and 302g of rosin, the catalyst aluminum oxide accounts for 4% of the total mass of industrial fatty acid and rosin, and the cocatalyst active clay accounts for 4% of the total mass of industrial fatty acid and rosin 50%, maintain a pressure of 0.5MPa, stir and heat to 200°C, after 6 hours of reaction, stop heating, cool to 80°C; adjust the pH of the system to 7, filter, wash with water, and then distill at 230°C / 1~2mmHg, The unreacted rosin and fatty acid are steamed out, and what remains in the distillation bottle is oil / pine resin-based compound dibasic acid.

[0031] (2) Add 1 mol of oil / pine resin-based compound dibasic acid, propylene glycol methyl ether in an amount of 40% of the mass of oil / pine resin-based compound dibasic acid and 50% of the mass of oil / pine resin-based compound dibasic acid 1, 4-dioxane, after stirring evenly, add 1mol zinc oxide, keep war...

Embodiment 2

[0037] (1) In an autoclave equipped with a stirring device and a thermometer, add 846g of industrial fatty acid and 302g of rosin, the catalyst lithium carbonate accounts for 3% of the total mass of industrial fatty acid and rosin, and the cocatalyst montmorillonite accounts for 3% of the total mass of industrial fatty acid and rosin 30%, maintain a pressure of 0.4MPa, stir and heat to 250°C, after 4 hours of reaction, stop heating, cool to 80°C; adjust the pH of the system to 7, filter, wash with water, and then distill at 250°C / 1~2mmHg, The unreacted rosin and fatty acid are steamed out, and what remains in the distillation bottle is oil / pine resin-based compound dibasic acid.

[0038] (2) Add 1 mol of oil / pine resin-based compound dibasic acid, propylene glycol methyl ether in an amount of 50% of the mass of oil / pine resin-based compound dibasic acid, and 50% of the mass of oil / pine resin-based compound 1,4-Dioxane, after stirring evenly, add 0.95mol zinc oxide, keep it at ...

Embodiment 3

[0042] (1) In an autoclave equipped with a stirring device and a thermometer, add 564g of industrial fatty acid and 302g of rosin. The catalyst strong acidic cation exchange resin accounts for 5% of the total mass of industrial fatty acid and rosin, and the cocatalyst active clay accounts for 5% of the total mass of industrial fatty acid and rosin. 20% of the mass, maintain a pressure of 1MPa, stir and heat to 280°C, after 3 hours of reaction, stop heating, cool to 70°C; adjust the pH of the system to 7, filter, wash with water, and then distill at 280°C / 1~2mmHg , steam out unreacted rosin and fatty acid, and what remains in the distillation bottle is grease / rosin-based compound dibasic acid.

[0043] (2) Add 1 mol of oil / pine resin-based compound dibasic acid, high-boiling point petroleum ether in an amount equal to 50% of the mass of the oil / pine resin-based compound dibasic acid in the reaction bottle, stir evenly, add 0.8 mol of zinc oxide, and heat at 150°C After keeping ...

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Abstract

The invention relates to a preparation method of an oil / rosin base liquid calcium-zinc composite stabilizing agent used for PVC (Polyvinyl Chloride). The preparation method comprises the following steps of: (1) taking industrial fatty acid and rosin as raw materials, and synthesizing an oil / rosin base composite binary acid through a Diels-Alder reaction; (2) respectively and uniformly stirring any two metallic compounds of zinc oxide, calcium hydroxide and calcium oxide with the oil / rosin base composite binary acid and a solvent, then raising the temperature to 80-150 DEG C, refluxing for 0.5-4 hours, and distilling to remove the solvent under a vacuum degree of 1-2mmHg to obtain corresponding oil / rosin base composite binary acids of two metals; and (3) dissolving a proper quantity of the oil / rosin base composite binary acids of the two metals in a mixed solution of epoxidized soybean oil, an antioxidant, liquid paraffin, phosphite ester and beta-diketone, and filtering to obtain the oil / rosin base liquid calcium-zinc composite stabilizing agent. The oil / rosin base liquid calcium-zinc composite stabilizing agent prepared by the preparation method is used for the field of PVC plastic processing, and reproducible natural oil resources are adopted as main raw materials, so that the product has the characteristics of good thermal stability and basically no toxicity and belongs to an environmentally-friendly like product with a high cost performance.

Description

technical field [0001] The invention belongs to the field of plastic additives, and in particular relates to a grease / turpentine-based liquid calcium-zinc composite thermal stabilizer for PVC with good thermal stability. Background technique [0002] Polyvinyl chloride (PVC) is the second largest synthetic resin after polyethylene, and is widely used in construction, telecommunications, transportation, electronics, chemicals, packaging and other industries. Due to the poor thermal stability of PVC, the difference between softening temperature and decomposition temperature is very small, which brings great difficulties to processing. Therefore, a certain amount of heat stabilizer must be added during its processing to improve its thermal stability. [0003] At present, heat stabilizers on the market mainly include lead stabilizers, calcium zinc stabilizers, organic tin stabilizers, etc. For a long time, lead salt and barium cadmium salt stabilizers have been dominating the P...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K5/098C08K5/1515C08K5/524C08K5/07
CPCC08K5/098C08K5/005
Inventor 夏建陵李梅杨小华李守海汪梅张燕黄坤
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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