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Water-emulsion-type high-efficiency terminator for polyvinyl chloride and preparation method thereof

A technology of polyvinyl chloride and water-emulsion type, which is applied in the field of polyvinyl chloride polymerization process water-emulsion type high-efficiency terminator and its preparation. Improved safety, improved thermal stability, and strong polymerization termination effects

Inactive Publication Date: 2012-08-22
道尔达(西安)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the production of polyvinyl chloride by suspension method in my country, bisphenol A terminator was used in the 1980s, and ATSC was used in the 1990s, but both of these terminators are highly toxic and will cause great harm to the environment and operators. , and the polyvinyl chloride products made by it will slowly release toxicity during use, which will cause damage to users and affect its safety in use

Method used

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  • Water-emulsion-type high-efficiency terminator for polyvinyl chloride and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Take raw materials according to the following formula: 13kg of organic solvent with terminating effect, 18kg of high-efficiency anti-aging agent, 10kg of plasticizer, 3kg of heat stabilizer, 3kg of emulsifier, and 0.6kg of emulsion stabilizer; Wherein, the organic solvent with terminating effect is a-methylstyrene; the high-efficiency anti-aging agent is bis(2,4-di-tert-butylphenyl) pentaerythritol bis-diphosphite; Plasticizer is dioctyl phthalate; Described thermal stabilizer is dioctyltin maleate; Described emulsion stabilizer is polyvinyl alcohol 1788; Described emulsifier is sodium lauryl sulfate and NPE-10 combination, wherein the dosage of sodium lauryl sulfate is 0.3kg, and the dosage of NPE-10 is 2.7kg.

[0026] The high-efficiency anti-aging agent described in this embodiment can also be N,N-diethylhydroxylamine or β(3,5-di-tert-butyl-4-hydroxyphenyl) octadecyl propionate or 2,4 ,6-tri-tert-butylphenol or tris(2·4-di-tert-butylphenyl)phosphite or 2,6-di-t...

Embodiment 2

[0033] The raw materials are weighed according to the following formula: 16kg of organic solvent with terminating effect, 15kg of high-efficiency anti-aging agent, 12kg of plasticizer, 4kg of heat stabilizer, 2kg of emulsifier, and 0.2kg of emulsion stabilizer; The organic solvent with termination effect is a-methylstyrene; the high-efficiency anti-aging agent is N,N-diethylhydroxylamine and bis(2,4-di-tert-butylphenyl)pentaerythritol bis-di Phosphite, wherein N,N-diethylhydroxylamine 7kg, two (2,4-di-tert-butylphenyl) pentaerythritol bis-diphosphite 8kg; the plasticizer is epoxy soybean oil; the The thermal stabilizer is calcium benzoate; the emulsion stabilizer is polyvinyl alcohol 1788; the emulsifier is a combination of emulsifier MOA-4 and MOA-9, wherein MOA-4 accounts for 0.5kg, and MOA-9 accounts for 1.5kg kg.

[0034] The preparation method is basically the same as in Example 1, except that the mass of water is 50.8 kg during the dissolution and mixing of the water...

Embodiment 3

[0036]Take raw materials by following formula: take the organic solvent that has termination function as 10kg, efficient anti-aging agent as 22kg, plasticizer as 8kg, thermal stabilizer as 2kg, emulsifier as 5kg, emulsion stabilizer as 1kg; Wherein, all The organic solvent with terminating effect is a-methylstyrene; the high-efficiency anti-aging agent is N,N-diethylhydroxylamine, bis(2,4-di-tert-butylphenyl)pentaerythritol bis-diethylene Phosphate and tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol ester, of which N,N-diethylhydroxylamine accounted for 7kg, bis(2,4-di-tert-butyl phenyl) pentaerythritol bis-diphosphite accounts for 7kg, and tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester accounts for 8kg; the plasticizer is trioctyl phosphate ester; the heat stabilizer is zinc abietate; the emulsion stabilizer is polyvinyl alcohol 1788; the emulsifier is sorbitan monostearate, polyoxyethylene sorbitan monostearate Fatt...

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Abstract

The invention relates to a water-emulsion-type high-efficiency terminator for polyvinyl chloride, which is prepared from the following raw materials in parts by mass: 10-16 parts of organic solvent or mixed solvent with a termination function, 15-22 parts of high-efficiency antiaging agent, 8-12 parts of plasticizer, 2-4 parts of thermal stabilizer, 2-5 parts of emulsifier and 0.2-1 part of emulsion stabilizer. The preparation method comprises the following steps: (1) organic phase dissolving and mixing; (2) water phase dissolving and mixing; (3) emulsifying by stirring; and (4) high-shear emulsifying. The terminator provided by the invention has a strong function on terminating polymerization, can enhance the thermal stability of resins, and can improve the whiteness and aging resistanceof resins. Especially, the terminator provided by the invention is an environment-friendly terminator which is safe and convenient during production operation, and greatly enhances the use safety of the prepared polyvinyl chloride product. The terminator provided by the invention can be used in a food packaging material.

Description

technical field [0001] The invention relates to a terminator, in particular to a high-efficiency water-emulsion type terminator for the polymerization process of polyvinyl chloride and a preparation method thereof. It belongs to the field of chemical technology. Background technique [0002] Polyvinyl chloride is an important member of the plastic family. The mainstream technology of its polymerization is suspension polymerization. An important part of suspension polymerization is the chain termination reaction. The quality of the terminator directly affects the termination reaction and the quality of the final polyvinyl chloride product. [0003] The main function of the polyvinyl chloride terminator is to terminate the reaction in time when the polymerization reaction reaches a certain conversion rate, thereby reducing the proportion of unstable structures in the polyvinyl chloride molecule, improving the thermal stability of the resin, improving the plasticizing perfor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F14/06C08F2/42
Inventor 杜伟锋公会良马玉慧
Owner 道尔达(西安)新材料有限公司
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