A kind of preparation method of bulk zinc stearate
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A technology of zinc stearate and stearic acid, which is applied in the field of preparation of massive zinc stearate, can solve the problems of small flakes, some micropowders, potential safety hazards in dust production, extrusion of flakes, etc., so as to reduce health effects. , and the effect of breakage, spontaneous combustion or reduction of the explosion index
Active Publication Date: 2016-07-27
DONGGUAN CHNV TECH CO LTD
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Problems solved by technology
Although beads and flakes can currently meet the processing requirements of most modified plastics, filler masterbatches, and color masterbatches, the use of internal mixers for color masterbatches and filler masterbatches in the petrochemical polyolefin industry is harmful to the environment and process accuracy. A very demanding industry that cannot fully meet the requirements
[0005] For the production enterprises of zinc stearate, powder products and bead products still have certain potential safety hazards in dust production, and flake products are easy to be lumped during transportation, flakes are squeezed, etc., become small pieces and some fine powders, etc. Happening
Method used
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Embodiment 1
[0023] A preparation method of bulk zinc stearate, a, under normal pressure, 1400g stearic acid is dropped into the reaction kettle and heated to 130-160° C. After adding catalyst hydrogen peroxide 70g and zinc oxide 220g, the reaction is molten state for 90 minutes; B, add antioxidant 5g and stir for 5-20 minutes; c, add in the mold that is placed the polyethylene mesh skeleton in the molten zinc stearate that step b makes; D, make the required shape after cooling Zinc stearate in lumps.
Embodiment 2
[0025] A kind of preparation method of bulk zinc stearate, a, under normal pressure, 1400g stearic acid is dropped into reactor and be heated to 130-160 ℃, add catalyst sodium dihydrogen phosphate 60g and zinc oxide 210g reaction 100 minutes to be Molten state; b, adding antioxidant 4g and stirring for 5-20 minutes; c, adding in the molten zinc stearate that step b makes in the mold that is placed on the polyethylene wire mesh skeleton; d, obtained after cooling Zinc stearate blocks in desired shape.
Embodiment 3
[0027] A preparation method of bulk zinc stearate, a, under normal pressure, 1400g of stearic acid is put into the reaction kettle and heated to 130-160°C, then add 50g of catalyst citric acid and 220g of zinc oxide and react for 120 minutes to be in a molten state B, add antioxidant 6g and stir for 5-20 minutes; c, add in the molten zinc stearate that step b makes in the mold that is placed on polyethylene wire mesh skeleton; D, make desired shape after cooling Zinc stearate in lumps.
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Abstract
The invention provides a preparation method of bulk zinc stearate. The preparation method comprises the following steps: a. feeding stearic acid at normal pressure to a reaction kettle, heating up to 130-160 DEG C, then adding a catalyst and zinc oxide to the reaction kettle, and taking reaction for 80-120 minutes till reaching the molten state; b. adding an antioxidant, and stirring for 5-20 minutes; c. adding the molten zinc stearate prepared in the step b to a mold with a framework; d. cooling to obtain the required bulk zinc stearate with a certain shape. The preparation method disclosed by the invention is to add the molten zinc stearate prepared by the dry method to the framework to prepare the bulk zinc stearate, and cannot generate particles or microparticle dust in a processing workshop, so as to effectively improve the environment quality of the workshop, greatly reduce influence on health of workers in the workshop, and achieve a great promotional value and social significance.
Description
technical field [0001] The invention relates to the field of preparation of auxiliary materials, in particular to a method for preparing block zinc stearate. Background technique [0002] Zinc stearate, Chinese aliases: zinc octadecanoate, zinc octadecanoate, zinc stearate (light), zinc stearate, zinc fatty wax, zinc stearate, white light powder, Specific gravity 1.095, greasy feeling, insoluble in water, soluble in hot organic solvents such as ethanol, benzene and turpentine, decomposed into stearic acid and corresponding zinc salt in case of strong acid, this product is hygroscopic. [0003] Zinc stearate has a wide range of uses, common uses: as heat stabilizer, lubricant, grinding agent, accelerator, thickener, acid scavenger, etc. [0004] At present, the products on the market are usually in the form of powder, beads, and flakes. Powder products are generally used as abrasives for coatings, and beads and flakes are often used as lubricants and dispersants for modifie...
Claims
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Application Information
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