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A kind of heat stabilizer for PVC and its preparation method and application

A heat stabilizer and solvent technology, applied in the field of PVC heat stabilizer and its preparation, can solve problems such as use restrictions, achieve the effects of overcoming poor heat resistance, reducing losses, and enhancing compatibility

Active Publication Date: 2018-09-04
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

Commonly used heat stabilizers on the market, such as lead heat stabilizers, organotin heat stabilizers, etc., have excellent thermal stability but their use is increasingly restricted

Method used

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  • A kind of heat stabilizer for PVC and its preparation method and application
  • A kind of heat stabilizer for PVC and its preparation method and application
  • A kind of heat stabilizer for PVC and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Dissolve 78.10 g (molecular weight: 390.51, 0.2 mol) of tungalin anhydride in 93.72 g of ethyl acetate, add it to the reaction vessel, and heat up to 25-60°C. Dissolve 24.41g (molecular weight: 137.14, 0.178mol) of p-aminobenzoic acid in 317.33g of ethyl acetate, add it dropwise to the reaction vessel, react at this temperature for 4 hours after the dropwise addition, spin evaporate, and dry in vacuo to obtain a solid product N-(3-Amino-benzoyl) tramamic acid.

[0026] (2) Add 26.38 g (molecular weight: 527.65, 0.05 mol) of N-(3-amino-benzoyl) temamic acid and 26.38 g of diethylene glycol monobutyl ether into the reaction vessel, and raise the temperature to 70°C. After completely dissolving, add 3.88g (molecular weight 81.39, 0.0475mol) zinc oxide or 2.58g (molecular weight 56.08, 0.046mol) calcium oxide in 2 batches, raise the temperature to 125°C, add 0.15g of glacial acetic acid dropwise, keep warm for 3h, pump Filtration and rotary evaporation to remove water ...

Embodiment 2

[0030] (1) Dissolve 78.10 g of tungalic anhydride in 78.10 g of ethyl acetate, add it into a reaction vessel, and heat up to 25-60°C. Dissolve 22.90 g of p-aminobenzoic acid in 343.50 g of ethyl acetate, and add it dropwise to the reaction vessel. After the dropwise addition, react at this temperature for 4 hours, rotary evaporate, and vacuum dry to obtain the solid product N-(3-amino- Benzoyl) tramamic acid.

[0031] (2) 26.38g of N-(3-amino-benzoyl) tungemamic acid, 7.91g of diethylene glycol monobutyl ether and 7.91g of odorless kerosene were added to the reaction vessel, and the temperature was raised to 70°C. After completely dissolving, add 3.70g of zinc oxide or 2.80g of calcium oxide in 3 batches, raise the temperature to 120°C, add 0.05g of hydrogen peroxide dropwise, keep warm for 3h, filter with suction, and remove water by rotary evaporation to obtain liquid N-(3-amino- Benzoyl) tramamic acid zinc salt or N-(3-amino-benzoyl) tramamic acid calcium salt.

[0032] (...

Embodiment 3

[0034] (1) Dissolve 78.10 g of tungalin anhydride in 117.15 g of acetone, add it into a reaction vessel, and raise the temperature to 25-60°C. 22.90g of p-aminobenzoic acid was dissolved in 458g of acetone, and was added dropwise to the reaction vessel. After the dropwise addition, it was reacted at this temperature for 4h, rotary evaporated, and dried in vacuo to obtain the solid product N-(3-amino-benzoic acid group ) Tongmamic acid.

[0035] (2) Add 26.38g of N-(3-amino-benzoyl) tiramamic acid and 7.91g of diethylene glycol monobutyl ether into the reaction vessel, and raise the temperature to 70°C. After completely dissolving, add 3.70g of zinc oxide or 2.80g of calcium oxide in 3 batches, raise the temperature to 120°C, add 0.05g of glacial acetic acid dropwise, keep warm for 3h, filter with suction, and remove water by rotary evaporation to obtain liquid N-(3-amino -Zinc salt of benzoyl)tramamic acid or calcium salt of N-(3-amino-benzoyl)tramamic acid.

[0036] (3) 6g ...

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Abstract

The invention discloses a heat stabilizer for PVC (polyvinyl chloride) and a preparation method and application thereof. The preparation method includes: subjecting tung maleic anhydride and para aminobenzoic acid to anhydride aminolysis reaction to obtain N-(3-amino-benzoyloxy) tung maleic amic acid; performing one-step reaction of the prepared N-(3-amino-benzoyloxy) tung maleic amic acid and metal oxides or metal hydroxides in solvent to prepare liquid N-(3-amino-benzoyloxy) tung maleic amic acid metal salt; compounding the prepared N-(3-amino-benzoyloxy) tung maleic amic acid calcium salt with zinc salt to obtain a liquid composite heat stabilizer. The prepared calcium-zinc liquid composite heat stabilizer has advantages of nontoxicity, freeness of heavy metals, environment friendliness and the like and endows PVC products with high heat stability and transparency. The preparation method is simple in process route and mild in condition, raw materials which are selected from natural environment-friendly renewable resources are rich in source and low in cost.

Description

technical field [0001] The invention belongs to the field of plastic additives, and in particular relates to a heat stabilizer for PVC, a preparation method and application thereof. Background technique [0002] Plastic additives are also called plastic additives, such as fillers, plasticizers, lubricants, stabilizers, colorants, etc., which are necessary to improve the processing performance of polymers (synthetic resins) or to improve the performance of the resin itself. some compounds added. Therefore, plastic additives occupy a particularly important position in plastic molding processing. [0003] Because the difference between the softening temperature and decomposition temperature of polyvinyl chloride (PVC) is very small and the thermal stability is poor, it brings great difficulties to the processing. Therefore, a certain amount of heat stabilizer must be added during its processing to improve its thermal stability. Commonly used heat stabilizers on the market, su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/20C08L27/06C07C231/02C07C233/63
CPCC07C231/02C08K5/20C08K2201/014C08L2201/08C08L27/06C07C233/63
Inventor 夏建陵汪梅李梅李守海黄坤蒋剑春
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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