Improved preparation method of zinc stearate
A technology of zinc stearate and a production method, applied in the directions of carboxylate preparation, carboxylate preparation, chemical instruments and methods, etc., can solve problems such as poor product consistency, achieve good product consistency, ensure quality, and decompose efficiency high effect
Active Publication Date: 2018-04-20
杭州欣科复合材料有限公司
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Problems solved by technology
[0004] Although the production process disclosed in this patent has very obvious economic benefits and social benefits, in this production process, a single pulverization is adopted, and the product consistency is poor. Therefore, designing a kind of preparation method of improved zinc stearate is very necessary
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[0057] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.
[0058] The preparation method of this improved zinc stearate, the method may further comprise the steps:
[0059] a, the stearic acid in liquid state is transported in the reaction kettle by conveying pump and carries out stirring heating, and stirring time is 20-28min, and heating temperature is 120-150 ℃, and in the present embodiment, stirring time is 24min, and heating temperature is 130°C;
[0060] b. Add zinc oxide into the reaction kettle three times, and react at a temperature of 160-180°C and a pressure of 0.18-0.24Mpa. The reaction time is 40-50min. In this embodiment, at a temperature of 170°C and a pressure of 0.21Mpa Under react, the reaction time is 45min;
[0061] C, the zinc stearate that reacts is transp...
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The invention provides an improved preparation method of zinc stearate. In the existing production process, single smashing results in poor consistence of products. The preparation method solves the above problem. The improved preparation method of zinc stearate comprises the following steps of a. conveying liquid stearic acid into a reaction kettle through a convey pump, stirring for 20-28 minutes and heating at 120-150 DEG C; b. adding zinc oxide into the reaction kettle for three times, reacting at 160-180 DEG C for 40-50 minutes under the pressure of 0.18-0.24Mpa; c. conveying reacted zincstearate to a tableting machine for tableting; d. roughly smashing the tableted zinc stearate through a common grinder; and e. fine crushing the roughly smashed zinc stearate through an air flow crushing system, so as to prepare the zinc stearate. The preparation method has the advantage of preparing highly consistent products.
Description
technical field [0001] The invention relates to a preparation method, in particular to an improved preparation method of zinc stearate. Background technique [0002] Zinc stearate is mainly used as a lubricant and release agent for styrene resins, phenolic resins, and amino resins; at the same time, it also has the functions of vulcanization active agent and softener in rubber. [0003] After searching, for example, Chinese patent literature discloses an improved zinc stearate production process [application number: 201510771630.3; publication number: CN 105348072A]. This improved zinc stearate production process is characterized in that the following steps are adopted: (a) after stearic acid is heated and melted in a reactor, under high-speed stirring, zinc oxide is added between 120°C-150°C, React for 10-15 minutes, then add pure water; (b) Vacuumize: seal the reaction kettle, evacuate to a vacuum degree of 50-500Pa, react for 20-30 minutes, cool down and enter the pulver...
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IPC IPC(8): C07C53/126C07C51/41
CPCB02C21/00C07C51/412C07C53/126
Inventor 林晓丽陈晔
Owner 杭州欣科复合材料有限公司