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Preparation and application method of polyvinyl chloride (PVC) resin terminator

A technology of polyvinyl chloride and terminator, which is applied in the preparation of polyvinyl chloride resin terminator, both in 2 fields, can solve the problems of insignificant thermal and oxidative aging resistance of resin, relatively toxic ATSC substances, large ATSC substances, etc. Achieve good synergistic effect, facilitate industrial application, high whiteness and aging whiteness

Inactive Publication Date: 2012-06-13
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010]Acetone thiosemicarbazone (ATSC) is a terminator with excellent performance, which can quickly react with free radicals and initiators. Chain molecules, and then improve the thermal stability of the product has a certain effect, but the effect on the thermal and oxidative aging resistance of the resin is not obvious
[0011] The toxicity of bisphenol A and ATSC products and the negative effects of PVC terminators have been recognized by people, and the use is limited due to the toxic effect
[0012] Chinese patent CN101735357A discloses a method for improving the aging whiteness of polyvinyl chloride resin, wherein acetone thiosemicarbazone is used as a terminator, tert-butyl-terephthalene Phenol is an anti-fish eye agent, and EB44-34, an aqueous emulsion type antioxidant made from semi-hindered phenol antioxidants of Ciba Specialty Chemicals, is a chain terminator. The disadvantage is that it uses highly toxic ATSC substances
[0013] Chinese patent CN101921354A discloses a preparation method of transparent high polyvinyl chloride resin, wherein acetone thiosemicarbazone or diethylhydroxylamine is used as a single terminator, Or use dilauryl thiomalonate and one of BHT, bisphenol A, and antioxidant 1076, 1010 as a terminator, but the shortcoming is the use of highly toxic ATSC substances; or use BHT and bisphenol A products that have negative effects on the ecological environment
[0014] Chinese patent CN1657546A discloses a method for preparing general-purpose polyvinyl chloride resin by suspension method, wherein acetone thiosemicarbazone is used as a single terminator, and it is prepared into 3 ~10% aqueous solution, with the disadvantage of using the more toxic ATSC substance

Method used

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  • Preparation and application method of polyvinyl chloride (PVC) resin terminator
  • Preparation and application method of polyvinyl chloride (PVC) resin terminator
  • Preparation and application method of polyvinyl chloride (PVC) resin terminator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Add 750 grams of 2,6-di-tert-butylphenol, 60 grams of dodecylbenzenesulfonic acid, 2.5 grams of polymerization inhibitor, start stirring, feed nitrogen as nitrogen protection, slowly heat up to 110~112°C, start to add styrene dropwise at this temperature, the amount of styrene is 455g, add dropwise at a uniform speed and Complete within ~200 minutes, keep warm at 110~112°C for 60 minutes. After the reaction is over, lower the temperature to 80°C, add 46 grams of neutralizing and decolorizing agent diethylhydroxylamine, and keep stirring at this temperature for 20 minutes, add 843 grams of styrene, stir for 30 minutes, and mix thoroughly to make HKY-10; maintain the temperature At 60~65°C, add 68 grams of benzofuranone antioxidant and 253 grams of phosphite antioxidant, and stir thoroughly for 30 minutes to obtain 1# oil-soluble composite liquid terminator product (1# terminator) .

Embodiment 2

[0054] Add 750 grams of 2,6-di-tert-butylphenol, 53 grams of dodecylbenzenesulfonic acid, 6.0 grams of polymerization inhibitor, start stirring, feed nitrogen as nitrogen protection, slowly heat up to 80~85°C, start to add styrene dropwise at this temperature, the amount of styrene is 340g, add dropwise at a constant speed and Complete within ~240 minutes, keep warm at 80~85°C for 80 minutes. After the reaction is over, cool down to 60°C, add 38 grams of neutralizing and decolorizing agent diethylhydroxylamine, and keep stirring at this temperature for 20 minutes, add 807 grams of isododecane, stir for 30 minutes, and mix thoroughly to make HKY-10; Maintain the temperature at 75~80°C, add 60 grams of benzofuranone antioxidant and 322 grams of phosphite antioxidant, and stir thoroughly for 50 minutes to obtain 2# oil-soluble composite liquid terminator product (2# Termination agent).

Embodiment 3

[0056] Add 750 grams of 2,6-di-tert-butylphenol, 67 grams of dodecylbenzenesulfonic acid, 4.5 grams of polymerization inhibitor, start stirring, feed nitrogen as nitrogen protection, slowly heat up to 117~120°C, start to add styrene dropwise at this temperature, the amount of styrene is 378g, add dropwise at a uniform speed and Complete within ~215 minutes, keep warm at 117~120°C for 60 minutes. After the reaction is over, cool down to 70°C, add 60 grams of neutralizing and decolorizing agent diethylhydroxylamine, and keep stirring at this temperature for 30 minutes, add 800 grams of α-methylstyrene, stir for 30 minutes, and mix thoroughly to make HKY- 10. Keep the temperature at 50~55°C, add 80 grams of benzofuranone antioxidants, 400 grams of phosphite antioxidants, and stir thoroughly for 60 minutes to obtain 3# oil-soluble composite liquid terminator products (3# terminator).

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Abstract

The invention relates to a preparation and application method of a polyvinyl chloride (PVC) resin terminator, belonging to the technical field of chemical products. The invention particularly relates to a liquid antioxidant product, which mainly comprises 2,6-di-bert-butyl-4-(1-phenylethyl)phenol and is obtained by carrying out catalytic alkylation reaction on 2,6-di-bert-butyl phenol and styrene as raw materials. An organic solvent is added into the liquid antioxidant product which mainly comprises the 2,6-di-bert-butyl-4-(1-phenylethyl)phenol, and is sufficiently stirred to obtain the liquid antioxidant product HKY-10. The HKY-10 is compounded with a benzofuran ketone antioxidant and a phosphite ester antioxidant to obtain an oil-soluble compound liquid terminator product as a terminator for a general-purpose PVC resin product preparation process by a suspension method; and the liquid terminator is added in a polymerization reaction process to obtain a PVC resin product with stable properties, thereby enhancing the aging whiteness of the PVC resin product. The PVC resin terminator has the characteristics of no toxicity and environmental protection, and does not generate water pollutants.

Description

technical field [0001] The invention relates to a preparation method of a polyvinyl chloride resin terminator, which is used for improving the stability performance of a general-purpose polyvinyl chloride (PVC) resin product by a suspension method. Specifically relate to by 2,6-di-tert-butylphenol, styrene is raw material, catalyzed alkylation reaction preparation formula ( ) is a liquid antioxidant product whose main product is 2,6-di-tert-butyl-4-(1-phenylethyl)phenol; it involves the technical field of chemical products; [0002] [0003] ( ) [0004] Add an organic solvent to the liquid antioxidant product whose main product is 2,6-di-tert-butyl-4-(1-phenylethyl)phenol, and stir thoroughly to make the liquid antioxidant product HKY-10. Background technique [0005] The formula ( ) into the liquid antioxidant product as the main product, add an organic solvent and stir fully to make a liquid antioxidant product HKY-10, a compound of a benzofuranone antioxidant a...

Claims

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Application Information

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IPC IPC(8): C08F14/06C08F2/42C08F2/18
Inventor 杜飞马龙季金艳花蓓蓓徐婷婷
Owner CHANGZHOU UNIV
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