Synthesis method for aluminum carboxylate nucleater without acidic byproduct

A technology of aluminum carboxylate and synthesis method, which is applied in the direction of carboxylate preparation, chemical instruments and methods, and compounds containing elements of group 3/13 of the periodic table, etc., to reduce requirements, reduce difficulty and cost, and improve purity Effect

Active Publication Date: 2011-05-25
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, regardless of n=1 or n=2, according to the molar ratio of the above reaction, hydrochloric acid will be generated in the final product, and the waste liquid discharged from the reaction will be acidic and pollute the environment. Moreover, due to the generation of acidic substances in the reaction process, more stringent requirements are put forward for the material of the reactor.
In addition, when n=2, the main product of the reaction is dihydroxy aromatic carboxylic acid aluminum salt, and the application effect is not very ideal

Method used

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  • Synthesis method for aluminum carboxylate nucleater without acidic byproduct
  • Synthesis method for aluminum carboxylate nucleater without acidic byproduct
  • Synthesis method for aluminum carboxylate nucleater without acidic byproduct

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Take 180.00g (1 mole) of tert-butylbenzoic acid, slowly add 61.30g (1.5 moles) of 30wt% NaOH aqueous solution under stirring, and carry out neutralization reaction at 25°C. After reacting for 30min, the reaction system presents a clear homogeneous solution After that, 125.25g (0.5 moles) of 35wt% AlCl 3 ·6H 2 O aqueous solution was gradually added to the reaction system, the stirring speed was increased, and the reaction was carried out at 55° C. for 1.5 hr, the reaction was terminated, filtered, the filtrate was collected, and the pH value of the filtrate was measured; the soluble salt remaining in the nucleating agent was removed by water washing, dried, and calculated as The monohydroxyl salt is the synthetic reaction yield of the calculation basis, and the synthetic reaction yield is based on the reactant tert-butylbenzoic acid; the DSC method is used to measure the decomposition temperature; the analysis and determination is the nucleating agent purity based on the...

Embodiment 2

[0028] The operation steps are the same as in Example 1, except that the neutralization reaction temperature is 30° C., the reaction time is 1.0 hr, the amount of NaOH is 57.21 g (1.4 moles), the neutralization replacement / hydroxylation reaction temperature is 45° C., and the reaction time is 1.0 hr. hr. Analysis and measurement and application test are the same as in Example 1.

Embodiment 3

[0030] The operation steps are the same as in Example 1, except that the neutralization reaction temperature is 1° C., the reaction time is 1.0 hr, the amount of NaOH is 65.39 g (1.6 moles), the neutralization replacement / hydroxylation reaction temperature is 60° C., and the reaction time is 2.0 hr. hr. Analysis and measurement and application test are the same as in Example 1.

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Abstract

The invention relates to a method for synthesizing an aluminum carboxylate salt nucleating agent without generating acid by-product, which is obtained by adding a neutralization reaction product of an aromatic carboxylic acid and a soluble hydroxide drop by drop into a soluble aluminum slat solution, and carrying out a displacement / hydroxylation reaction, limiting the OH<-> mol participated in the reaction and carried by hydroxide, which is 40-60% over than the -COOH participated in the reaction and carried by the aromatic carboxylic acid in the neutralization, in the displacement / hydroxylation reaction, the mol amount of the soluble aluminum salt Al<3+> being 45-55% of the aromatic carboxylic acid, ensuring the reaction process not to generate or generate the acid by-product as little as possible, and reducing the material demand on reactor in the reaction. The invention further enables not to generate the dihydroxy salt and non-hydroxy salt, or to generate the dihydroxy salt and non-hydroxy salt as little as possible, ensures the yield of target products of the mono-hydroxyl aromatic carboxylate aluminum salt, improves the purity of final product, and reduces the hardness and cost of following treatment.

Description

technical field [0001] The invention relates to a method for synthesizing an aluminum carboxylate nucleating agent, in particular to a method for synthesizing an aluminum carboxylate nucleating agent without generating acidic by-products. This method can effectively reduce the amount of acidic by-products generated during the synthesis of aluminum carboxylate polyolefin nucleating agents, so that dihydroxy salts and non-hydroxyl salts are not generated or generated as little as possible, ensuring that the target product monohydroxy aromatic carboxyl The amount of aluminum salts produced can improve the purity of the final product, reduce the difficulty and cost of product post-processing, and reduce the requirements for reactor materials. Background technique [0002] Adding a nucleating agent to improve polyolefin, especially its bending and tensile properties, is an important way to strengthen and modify polypropylene. Aromatic carboxylic acid metal soaps are a kind of nu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C51/41C07F5/06C07C63/04C07C57/30C08F6/00C08F6/26
Inventor 王小强李吉春董炳利田亮程中克苟文甲景媛媛王玫陈礼金
Owner PETROCHINA CO LTD
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