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Preparation method for nucleating agent

A technology of tert-butyl benzoic acid and aluminum salt is applied in the field of preparation of polypropylene additives, which can solve the problems of increased manufacturing cost, complicated process operation, environmental pollution and the like, and achieves the effect of avoiding the recovery process, simplifying the process and simple operation.

Inactive Publication Date: 2016-02-24
GCH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a preparation method of a polypropylene nucleating agent, which is used to solve the problem that not only the process operation is complicated in the prior art, but also a large amount of organic solvent and water-soluble salt aluminum chloride must be used, causing environmental pollution and increasing production Fees and other issues

Method used

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  • Preparation method for nucleating agent
  • Preparation method for nucleating agent
  • Preparation method for nucleating agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] At room temperature, at 1m 3 In the reaction tank, put 25.6Kg of NaAlO 2 , add water 0.4m 3 , stirred and dissolved, dropped into 148.2Kg p-tert-butylbenzoic acid, started the circulation pump to circulate and stir for 2 hours, then added a concentration of 200Kg (AlCl 3 ·6H 2 O) / M 3 Aluminum salt solution 0.115M 3 , start the circulating pump to stir the reaction for 1 hour, after the reaction, add the concentration of 200Kg (AlCl 3 ·6H 2 O) / M 3 The aluminum salt solution is about 0.0105M 3 , adjust the pH value of the solution to 4.5-5.0, press filter, rinse to remove NaCl, dry, and prepare a white solid product, which is determined to be two (2,4-di-tert-butylbenzoic acid) aluminum hydroxy, through mass spectrometry and infrared analysis, The yield was 97.3%, and the Al content was 6.41%. (the infrared spectrogram of product sees attached figure 1 )

Embodiment 2

[0027] At room temperature, at 1m 3 In the reaction tank, put 25.6Kg of NaAlO 2 , add water 0.4m 3 , stirred and dissolved, dropped into 148.2Kg p-tert-butylbenzoic acid, started the circulation pump to circulate and stir for 2 hours, then added a concentration of 200Kg (AlCl 3 ·6H 2 O) / M 3 Aluminum salt solution 0.115M 3 , stirred and started the circulating pump to react for 3 hours, after the reaction was finished, the concentration of 200Kg (AlCl 3 ·6H 2 O) / M 3 The aluminum salt solution is about 0.0105M 3 , adjust the pH value of the solution to 4.5-5.0, press filter, rinse to remove NaCl, dry, and prepare a white solid product, which is determined to be two (2,4-di-tert-butylbenzoic acid) aluminum hydroxy, through mass spectrometry and infrared analysis, The yield was 97.5%, and the Al content was 6.48%.

Embodiment 3

[0029] At room temperature, at 2m 3 In the reaction tank, put 25.6Kg of NaAlO 2 , add water 0.4m 3 , stirred and dissolved, dropped into 148.2Kg p-tert-butylbenzoic acid, started the circulation pump to circulate and stir for 2 hours, then added a concentration of 200Kg (AlCl 3 ·6H 2 O) / M 3 Aluminum salt solution 0.115M 3 , stirred and started the circulation pump to react for 2 hours, after the reaction was finished, the added concentration was 200Kg (AlCl 3 ·6H 2 O) / M 3 The aluminum salt solution is about 0.0105M 3 , adjust the pH value of the solution to 4.5 to 5.0, press filter, rinse to remove NaCl, dry, and prepare a white solid product, which is determined to be two (2,4-di-tert-butylbenzoic acid) aluminum hydroxy, through mass spectrometry and infrared analysis. The yield was 97.5%, and the Al content was 6.48%.

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Abstract

The invention relates to a preparation method for 2-[4-tert-butylbenzoic acid]hydroxy-aluminium. 2-[4-tert-butylbenzoic acid]hydroxy-aluminium is prepared from 4-tert-butylbenzoic acid, a meta-aluminate radical providing substance, and aluminium salt through chemical reaction in water. Compared with a conventional method, the preparation method provided by the invention has the advantages as follows: the yield is increased, an organic solvent is not used as a reaction medium in a reaction process, and heating is not required as reaction is carried out at normal temperature, so that energy conservation and environment protection are realized; meanwhile, the organic solvent recovery and environmental pollution causing are avoided and the production cost is reduced greatly.

Description

technical field [0001] The invention relates to the technical field of preparation of polypropylene additives, in particular to a preparation method of a nucleating agent. technical background [0002] Nucleating agents are additives suitable for polymers, especially incompletely crystalline polymers, such as polyethylene and polypropylene, etc., and used to modify their crystallization behavior. The nucleating agent can shorten the molding cycle and improve the transparency, surface gloss, tensile strength, rigidity, heat distortion temperature, impact resistance and creep resistance of the product by accelerating the crystallization rate, increasing the crystallization density and promoting the miniaturization of the grain size. Denaturation and other properties. [0003] Regarding the preparation of di-[4-tert-butylbenzoic acid] hydroxyaluminum, CN102850578B discloses the preparation of this type of compound, specifically for first dissolving 2,4-di-tert-butylbenzoic aci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/06C08K5/092C08L23/12
CPCC07F5/06C08K5/092C08L23/12
Inventor 赵文林关方文
Owner GCH TECH