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Production method for barium stearate

A technology of barium stearate and its production method, which is applied in chemical instruments and methods, carboxylate preparation, carboxylate preparation, etc., can solve problems such as wastewater discharge that cannot be overcome, and achieve the effects of reducing energy consumption and saving costs

Inactive Publication Date: 2015-07-15
GUANGZHOU VOCATIONAL COLLEGE OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is still unable to overcome the disadvantage of wastewater discharge

Method used

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  • Production method for barium stearate

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Effect test

Embodiment 1

[0029] The production method of barium stearate described in the present embodiment, carries out according to the following steps:

[0030] 1) In a 5000ml flask with a heating, stirring and temperature measuring device, add 1200ml of water to start stirring and heating;

[0031] 2) Under normal pressure, with water as the reaction dispersion medium, under the condition of heating while stirring, first add powdered barium hydroxide octahydrate (Ba(OH)) into the flask in step 1). 2 ·8H 2 O) 132.0g, stir evenly to form a barium hydroxide suspension; when the temperature reaches 58°C, add 222.2g of stearic acid while stirring, the stearic acid is fine granular industrial stearic acid; when the temperature reaches At 66°C, the heating was stopped; due to the exothermic reaction, the temperature further rose, and the temperature was maintained at 70°C, and the reaction was carried out for 30 minutes; the reaction ended. The barium hydroxide octahydrate is powdered barium hydroxide...

Embodiment 2

[0035] The production method of barium stearate described in the present embodiment, carries out according to the following steps:

[0036] 1) In the 5000ml flask with heating, stirring and temperature measuring device, add 1200ml embodiment 1 gained circulating mother liquor, heat while stirring, start stirring and heating;

[0037] 2) Under normal pressure, with water as the reaction dispersion medium, under the condition of heating while stirring, first add 132.1g of powdered barium hydroxide octahydrate to the flask in step 1), and form barium hydroxide suspension after stirring evenly. Turbid liquid; when the temperature reaches 56°C, add 222.05g of stearic acid while stirring, and the stearic acid is fine granular industrial grade stearic acid; when the temperature reaches 65°C, stop heating; The temperature was further raised, maintained at a temperature of 69° C., and reacted for 30 minutes; the reaction ended. The barium hydroxide octahydrate is powdered barium hydro...

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Abstract

The invention discloses a production method for barium stearate. The production method comprises the following steps: 1) adding water into a reactor and starting stirring and heating; 2) with water as a reaction dispersion medium and under the conditions of stirring and heating, adding powdery barium hydroxide at normal pressure so as to form a barium hydroxide suspension, then adding subparticle stearic acid while stirring when temperature reaches 50 to 60 DEG C, stopping heating when temperature reaches 65 to 66 DEG C and carrying out a reaction for 20 to 30 min when temperature rises to 69 to 70 DEG C caused by reaction exotherm; and 3) subjecting a reaction product to filtering separation, drying and crushing so as to obtain a barium stearate product. The production method provided by the invention realizes a complete chemical reaction of stearic acid with barium hydroxide under the reaction condition that a catalyst is not added and has low requirements on equipment; process flow is simple; the reaction medium water can be cyclically used, so no waste water is discharged, causing no pollution to the environment; reaction temperature is low, and little energy is consumed; no catalyst is needed, and production cost is reduced.

Description

technical field [0001] The invention relates to a production method of barium stearate, which belongs to the technical field of preparation of metal soaps. Background technique [0002] Barium stearate is mainly used in heat stabilizers and lubricants of polyethylene and polyvinyl chloride copolymers. Has excellent heat resistance stability, lubricity and processability. Used in polyvinyl chloride products such as transparent film, artificial leather, hard sheet and pipe. It can also be used as high temperature resistant release agent and high temperature lubricant for machinery. [0003] At present, the method for producing barium stearate is mainly the traditional saponification metathesis method. This method has a mature process, but it consumes a lot of water, caustic soda is used, and the discharge of high-concentration saline wastewater is large, polluting the environment. It does not meet the current requirements of energy saving, environmental protection and clea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C51/41C07C53/126
CPCC07C51/412C07C53/126
Inventor 邓志城
Owner GUANGZHOU VOCATIONAL COLLEGE OF SCI & TECH
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