Polyvinyl chloride plasticizer and preparation method thereof

A polyvinyl chloride and plasticizer technology, applied in the field of polyvinyl chloride plasticizer and its preparation, can solve problems such as health threats, pollution of physiological fluids, loss of initial properties of PVC, etc., to expand the application range and reduce the glass transition The effect of temperature

Inactive Publication Date: 2012-10-10
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will cause PVC to gradually lose its initial properties. In addition, because the additives migrating to the surface of the substrate may contaminate physiological fluids, such as blood, serum or plasma, etc., when PVC products are applied to biomedical fields or children's toys, they will be harmful. serious threat to health

Method used

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  • Polyvinyl chloride plasticizer and preparation method thereof
  • Polyvinyl chloride plasticizer and preparation method thereof
  • Polyvinyl chloride plasticizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Synthesis of 4-chlorosulfonylphthaloyl chloride

[0038] Add 100 g of sodium phthalate-4-sulfonate into a 1L round bottom flask, and add 220 g of PCl under stirring 5 , heated in an oil bath at 180°C, and reacted for 15 hours; then, 500ml of toluene solution was added to the reactor, heating was stopped, and stirring was continued. After standing for a period of time, white NaCl precipitated out, filtered, and distilled under reduced pressure to obtain 4-chlorosulfonylphthaloyl chloride.

[0039] (2) Synthesis of 4-chlorosulfonyl phthalate di-isooctyl

[0040] Take 33.2mmol of the product from the previous step, put it in a 500ml round bottom flask, add 250ml of chloroform and stir to dissolve, add 66.4mmol of 2-ethylhexanol and 66.4mmol of triethylamine successively under stirring, and react at 65°C for 2 hours. The product organic phase was washed with 1M HCl solution, saturated NH 4 Cl solution and washed with deionized water. Then the organic phases were com...

Embodiment 2

[0044] (1) Synthesis of 5-chlorosulfonylisophthaloyl chloride

[0045]Add 80 g of isophthalic acid-5-sodium sulfonate into a 1L round bottom flask, and add 240 g of PCl under stirring 5 , and reacted for 20 hours at the temperature of an oil bath at 170° C.; then, 500 ml of toluene solution was added to the reactor, heating was stopped, and stirring was continued. After standing for a period of time, white NaCl precipitated out, filtered, and distilled under reduced pressure to obtain 5-chlorosulfonylisophthaloyl chloride.

[0046] (2) Synthesis of 5-chlorosulfonyl diisooctyl isophthalate

[0047] Take 33.2mmol of the product 5-chlorosulfonyl-isophthaloyl chloride from the previous step, put it in a 500ml round-bottomed flask, add 250ml of chloroform and stir to dissolve, then add 99.6mmol of 2-ethylhexanol and 99.6mmol of trichloromethane under stirring Ethylamine, reacted at 55°C for 4 hours. The organic phase of the product was sequentially washed with 1mol / l HCl solutio...

Embodiment 3

[0051] (1) Synthesis of 4-chlorosulfonylphthaloyl chloride

[0052] This step is the same as step (1) of Example 1.

[0053] (2) Synthesis of 4-chlorosulfonyl phthalate di-n-octyl

[0054] Take 33.2mmol of the product from the previous step, put it in a 500ml round bottom flask, add 250ml of chloroform and stir to dissolve, add 66.4mmol of n-octanol and 66.4mmol of pyridine successively under stirring, and react at 70°C for 1 hour. The product organic phase was washed with 1M HCl solution, saturated NH 4 Cl solution and washed with deionized water. Then the organic phases were combined, dried over anhydrous magnesium sulfate, filtered, and the crude product obtained by concentration was distilled under reduced pressure to obtain 4-chlorosulfonyl phthalate di-n-octyl ester.

[0055] (3) Synthesis of 4-mercaptophthalate di-n-octyl

[0056] Take 10.2mmol of the product from the previous step and place it in a 250ml round bottom flask, dissolve it with 5.0ml acetic acid, and d...

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Abstract

The invention belongs to the technical field of a general polymer material, and particularly relates to a polyvinyl chloride plasticizer and a preparation method thereof. Sulfonic acid instead of phthalate is used as a raw material, and mercapto-substituted phthalate is prepared via acyl chlorination, esterification and reduction. When the plasticizer is used, the transformation temperature and flow temperature of PVC (polyvinyl chloride) glass can be reduced, the migration of the plasticizer can be inhibited, and the thermal stability of PVC can be improved. The modified PVC can maintain the stability in a long time, no damage can be caused to the environment, and the scope of application of PVC can be expanded undoubtedly.

Description

technical field [0001] The invention belongs to the technical field of general polymer materials, and in particular relates to a polyvinyl chloride plasticizer and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) is one of the five general-purpose synthetic resins and one of the earliest plastic varieties in the world to realize industrial production. Because of its advantages of non-flammability, corrosion resistance, wear resistance, excellent electrical insulation, and high mechanical strength, it is widely used in industries such as industry, agriculture, construction, transportation, electric power, telecommunications, and packaging. At present, the global production of PVC is second only to polyethylene (PE), ranking second. [0003] Since PVC is a polar molecule, there is a strong interaction between molecular chains, so it is necessary to add plasticizers to reduce the force between PVC molecular chains, so that the glass transiti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C323/62C07C319/02C08F114/06C08F8/34C08L27/22
Inventor 唐萍马汉峰邢士理
Owner FUDAN UNIV
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