CN112341326A - Novel preparation process of zinc stearate - Google Patents
Novel preparation process of zinc stearate Download PDFInfo
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- CN112341326A CN112341326A CN202011064415.7A CN202011064415A CN112341326A CN 112341326 A CN112341326 A CN 112341326A CN 202011064415 A CN202011064415 A CN 202011064415A CN 112341326 A CN112341326 A CN 112341326A
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- zinc
- zinc stearate
- preparation process
- heating
- stearate
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- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 title claims abstract description 54
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 31
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 150000003751 zinc Chemical class 0.000 claims abstract description 21
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 18
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 18
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000008117 stearic acid Substances 0.000 claims abstract description 18
- 239000011787 zinc oxide Substances 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 14
- 239000002253 acid Substances 0.000 claims abstract description 13
- 238000004806 packaging method and process Methods 0.000 claims abstract description 13
- 239000012266 salt solution Substances 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 239000012047 saturated solution Substances 0.000 claims abstract description 8
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 5
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims description 4
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 claims description 3
- DLINORNFHVEIFE-UHFFFAOYSA-N hydrogen peroxide;zinc Chemical compound [Zn].OO DLINORNFHVEIFE-UHFFFAOYSA-N 0.000 claims description 3
- 239000004246 zinc acetate Substances 0.000 claims description 3
- 239000011592 zinc chloride Substances 0.000 claims description 3
- 235000005074 zinc chloride Nutrition 0.000 claims description 3
- 229940105296 zinc peroxide Drugs 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 claims description 2
- 229910000165 zinc phosphate Inorganic materials 0.000 claims description 2
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 2
- 229960001763 zinc sulfate Drugs 0.000 claims description 2
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 2
- HSYFJDYGOJKZCL-UHFFFAOYSA-L zinc;sulfite Chemical compound [Zn+2].[O-]S([O-])=O HSYFJDYGOJKZCL-UHFFFAOYSA-L 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000002844 melting Methods 0.000 abstract description 8
- 230000008018 melting Effects 0.000 abstract description 8
- 239000003054 catalyst Substances 0.000 abstract description 6
- 230000002378 acidificating effect Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000000463 material Substances 0.000 description 5
- 229920001971 elastomer Polymers 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000012760 heat stabilizer Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- AGXUVMPSUKZYDT-UHFFFAOYSA-L barium(2+);octadecanoate Chemical compound [Ba+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O AGXUVMPSUKZYDT-UHFFFAOYSA-L 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/41—Preparation of salts of carboxylic acids
- C07C51/412—Preparation of salts of carboxylic acids by conversion of the acids, their salts, esters or anhydrides with the same carboxylic acid part
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to a novel preparation process of zinc stearate, which is characterized by comprising the following steps: the preparation process comprises the following steps: s1: adding stearic acid into a reaction kettle, heating to 80-90 ℃, adding a zinc salt solution into the reaction kettle after the stearic acid is completely dissolved, and uniformly stirring; s2: heating the reaction kettle to 110 ℃ again, adding zinc oxide, heating to 125 ℃ again, preserving the heat at 125 ℃ again, and fully stirring for 35-40 min; s3: after the reaction is finished, discharging, cooling, tabletting, crushing and packaging are carried out to obtain a finished product; according to the invention, a saturated solution of zinc salt is adopted to replace a mode of adding an acidic substance in the conventional zinc stearate melting method production as a catalyst, the zinc salt is adopted as the catalyst in the zinc stearate melting method production, the saturated solution of zinc salt is adopted, and zinc stearate is generated by combining zinc ions in the zinc salt with stearic acid, so that the generation of free acid can be reduced, and the exceeding of the free acid is avoided.
Description
Technical Field
The invention relates to the technical field of preparation of zinc stearate, in particular to a novel preparation process of zinc stearate.
Background
Zinc stearate is used in the pharmaceutical industry, in the formulation of solidified oils and lubricants, and also as a paint drier. The composite material is used for processing PVC and rubber nontoxic products, has synergistic effect with calcium stearate and barium stearate, can effectively improve the photo-thermal stability of PVC and rubber products, and the dosage in PVC processing is usually less than 1 part; the rubber composition is used for rubber product mold forming agents, PP, PE, PS and EPS polymerization additives and pencil leads, and the general dosage is 1-3 parts.
Zinc stearate can be used as a heat stabilizer; a lubricant; lubricating grease; an accelerator; thickeners, and the like. For example, it is generally used as a heat stabilizer for PVC resins. For general industrial transparent articles; the product can be used together with calcium soap, can be used for nontoxic products, is generally used for soft products, but has started to be used for hard transparent products such as mineral water bottles, water feeding pipes and other products in recent years, has good lubricating property, can improve the scale precipitation phenomenon, and can also be used as a lubricant, a mold release agent, a flatting agent of paint and an additive of coating; the zinc stearate has a wide market, and how to reduce the production cost of the zinc stearate and improve the product quality becomes important.
The zinc stearate production process at home and abroad mainly comprises three production processes of a double decomposition method, a water phase one-step method and a melting method (dry method), wherein the double decomposition process needs 8 times of water as much as stearic acid for heating reaction in the production process, the dehydrated water cannot be recycled, a large amount of energy and a large amount of waste water are consumed, and the dehydrated materials with the water content of 35-40% also consume a large amount of heat when being dried; the water removed in the production process by the water phase one-step process can be recycled, and compared with a double decomposition process, the water phase one-step process is energy-saving and environment-friendly; the melting method does not need water during production, and the subsequent process does not have a drying procedure, so that the method is more energy-saving and environment-friendly than a one-step method, is a clean production process, has lower product cost and better quality, and improves the competitiveness of the product in the market.
At present, when zinc stearate is prepared by a melting method, stearic acid, zinc oxide and a catalyst are put into a reaction kettle and react under normal pressure to prepare the zinc stearate. It has the following disadvantages: the reaction kettle is vertical, the viscosity of the mixed liquid is high, the stirring is not uniform, the reaction is not uniform, after the reaction is finished, the quality of the upper layer and the lower layer of products in the kettle is different, and acidic substances are often adopted in the catalyst, so that the free acid in the products is more.
Disclosure of Invention
The invention aims to solve the technical problem of providing a novel preparation process of zinc stearate, which can solve the problem that the zinc stearate adopts a conventional melting preparation method to cause more free acid in a product.
In order to solve the technical problems, the technical scheme of the invention is as follows: the novel preparation process of the zinc stearate has the innovation points that: the preparation process comprises the following steps:
s1: adding stearic acid into a reaction kettle, heating to 80-90 ℃, adding a zinc salt solution into the reaction kettle after the stearic acid is completely dissolved, and uniformly stirring;
s2: heating the reaction kettle to 110 ℃ again, adding zinc oxide, heating to 125 ℃ again, preserving the heat at 125 ℃ again, and fully stirring for 35-40 min;
s3: after the reaction is finished, discharging, cooling, tabletting, crushing and packaging are carried out to obtain a finished product.
Further, the zinc salt solution added in the step S1 is a saturated solution; the zinc salt solution contains one or more of zinc sulfate, zinc nitrate, zinc peroxide, zinc chloride, zinc phosphate, zinc sulfite and zinc acetate.
Further, the temperature of the reaction kettle in the S2 is increased to 110 ℃, zinc oxide is added, the temperature is increased to 125 ℃ again, the temperature is kept at 125 ℃, and the mixture is fully stirred for 40 min.
And further, discharging the molten zinc stearate in the S3, feeding the discharged zinc stearate into a tablet press, tabletting and cooling the zinc stearate, feeding the flaky material into an airflow crusher for crushing, collecting the crushed product by a pulse dust collector, and packaging and warehousing the product by an automatic packaging machine.
Furthermore, the zinc content in the zinc stearate is ensured to be unchanged and is 11.23 percent; on the premise that free acid does not exceed the standard and is less than or equal to 0.2%, the using amount of the zinc salt solution and the using amount of zinc oxide can be changed, the using amounts of the zinc salt solution and the zinc oxide are in inverse proportion, and the mass ratio of stearic acid to zinc salt to zinc oxide is 1000: 3-5: 148.
the invention has the advantages that:
1) according to the invention, a saturated solution of zinc salt is adopted to replace a mode of adding an acidic substance in the conventional zinc stearate melting method production as a catalyst, the zinc salt is adopted as the catalyst in the zinc stearate melting method production, the saturated solution of zinc salt is adopted, and zinc stearate is generated by combining zinc ions in the zinc salt with stearic acid, so that the generation of free acid can be reduced, and the exceeding of the free acid is avoided.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a diagram of a novel preparation process of zinc stearate of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
a novel preparation process of zinc stearate comprises the following specific steps:
s1: adding 1 ton of stearic acid into a reaction kettle, heating to 80 ℃, adding 8kg of zinc acetate saturated solution into the reaction kettle after the stearic acid is completely dissolved, and uniformly stirring;
s2: heating the reaction kettle to 100 ℃ again, adding 148kg of zinc oxide, heating to 120 ℃ again, preserving heat at 120 ℃, and fully stirring for 35 min;
s3: discharging the molten zinc stearate after the reaction, feeding the zinc stearate into a tablet press, tabletting and cooling the zinc stearate, feeding the flaky material into a jet mill for crushing, collecting the crushed product by a pulse dust collector, and packaging and warehousing the product by an automatic packaging machine; and detecting that the content of free acid in the zinc stearate is less than 0.15 percent.
Example 2:
a novel preparation process of zinc stearate comprises the following specific steps:
s1: adding 1 ton of stearic acid into a reaction kettle, heating to 90 ℃, adding 3kg of zinc peroxide and 1kg of water into the reaction kettle after the stearic acid is completely dissolved, and uniformly stirring;
s2: heating the reaction kettle to 110 ℃ again, adding 148kg of zinc oxide, heating to 125 ℃ again, preserving heat at 125 ℃, and fully stirring for 40 min;
s3: discharging the molten zinc stearate after the reaction, feeding the zinc stearate into a tablet press, tabletting and cooling the zinc stearate, feeding the flaky material into a jet mill for crushing, collecting the crushed product by a pulse dust collector, and packaging and warehousing the product by an automatic packaging machine; and detecting that the content of free acid in the zinc stearate is less than 0.1 percent.
Example 3:
a novel preparation process of zinc stearate comprises the following specific steps:
s1: adding 1 ton of stearic acid into a reaction kettle, heating to 90 ℃, adding 4.5kg of zinc chloride saturated solution into the reaction kettle after the stearic acid is completely dissolved, and uniformly stirring;
s2: heating the reaction kettle to 110 ℃ again, adding 148kg of zinc oxide, heating to 125 ℃ again, preserving heat at 125 ℃, and fully stirring for 40 min;
s3: and discharging the molten zinc stearate after the reaction, feeding the zinc stearate into a tablet press, tabletting and cooling the zinc stearate, feeding the flaky material into a jet mill for crushing, collecting the crushed product by a pulse dust collector, and packaging and warehousing the product by an automatic packaging machine. And detecting that the content of free acid in the zinc stearate is less than 0.2 percent.
The content of free acid in the zinc stearate prepared by the method is obviously and greatly lower than 1 percent, and the content of the free acid in the product is effectively reduced.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A novel preparation process of zinc stearate is characterized by comprising the following steps: the preparation process comprises the following steps:
s1: adding stearic acid into a reaction kettle, heating to 80-90 ℃, adding a zinc salt solution into the reaction kettle after the stearic acid is completely dissolved, and uniformly stirring;
s2: heating the reaction kettle to 110 ℃ again, adding zinc oxide, heating to 125 ℃ again, preserving the heat at 125 ℃ again, and fully stirring for 35-40 min;
s3: after the reaction is finished, discharging, cooling, tabletting, crushing and packaging are carried out to obtain a finished product.
2. The novel preparation process of zinc stearate according to claim 1, characterized in that: the zinc salt solution added in the S1 is a saturated solution; the zinc salt solution contains one or more of zinc sulfate, zinc nitrate, zinc peroxide, zinc chloride, zinc phosphate, zinc sulfite and zinc acetate.
3. The novel preparation process of zinc stearate according to claim 1, characterized in that: and (3) heating the reaction kettle in the S2 to 110 ℃, adding zinc oxide, heating to 125 ℃ again, preserving heat at 125 ℃, and fully stirring for 40 min.
4. The novel preparation process of zinc stearate according to claim 1, characterized in that: and discharging the molten zinc stearate in the S3, feeding the discharged zinc stearate into a tablet press, pressing the zinc stearate into a tablet, cooling the zinc stearate, feeding the tablet into a jet mill for crushing, collecting the crushed zinc stearate by a pulse dust collector, and packaging and warehousing the crushed zinc stearate by an automatic packaging machine.
5. The novel preparation process of zinc stearate according to claim 1, characterized in that: the zinc content in the zinc stearate is ensured to be unchanged and is 11.23 percent; on the premise that free acid does not exceed the standard and is less than or equal to 0.2%, the using amount of the zinc salt solution and the using amount of zinc oxide can be changed, the using amounts of the zinc salt solution and the zinc oxide are in inverse proportion, and the mass ratio of stearic acid to zinc salt to zinc oxide is 1000: 3-5: 148.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011064415.7A CN112341326A (en) | 2020-09-30 | 2020-09-30 | Novel preparation process of zinc stearate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011064415.7A CN112341326A (en) | 2020-09-30 | 2020-09-30 | Novel preparation process of zinc stearate |
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| CN112341326A true CN112341326A (en) | 2021-02-09 |
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| CN202011064415.7A Pending CN112341326A (en) | 2020-09-30 | 2020-09-30 | Novel preparation process of zinc stearate |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2261335A1 (en) * | 1974-02-20 | 1975-09-12 | Norac Cy Inc | Metallic soaps of Gp II metals prodn. - by mixing metal oxide with a higher fatty acid |
| CN1127743A (en) * | 1995-01-25 | 1996-07-31 | 烟台市福山区齐鲁助剂厂 | Specific grade zinc stearate and its producing process |
| US20040071619A1 (en) * | 1992-01-15 | 2004-04-15 | Myerson Allan S. | Method for the purification of zinc oxide controlling particle size |
| CN103922918A (en) * | 2013-01-11 | 2014-07-16 | 中山华明泰化工股份有限公司 | Ultrathin flake zinc stearate |
| CN105924344A (en) * | 2016-05-23 | 2016-09-07 | 惠州市志海新威科技有限公司 | High-quality zinc stearate prepared from glyceryl tristearate |
| CN108467344A (en) * | 2018-03-20 | 2018-08-31 | 山东三义实业股份有限公司 | A kind of production method of zinc stearate |
-
2020
- 2020-09-30 CN CN202011064415.7A patent/CN112341326A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2261335A1 (en) * | 1974-02-20 | 1975-09-12 | Norac Cy Inc | Metallic soaps of Gp II metals prodn. - by mixing metal oxide with a higher fatty acid |
| US20040071619A1 (en) * | 1992-01-15 | 2004-04-15 | Myerson Allan S. | Method for the purification of zinc oxide controlling particle size |
| CN1127743A (en) * | 1995-01-25 | 1996-07-31 | 烟台市福山区齐鲁助剂厂 | Specific grade zinc stearate and its producing process |
| CN103922918A (en) * | 2013-01-11 | 2014-07-16 | 中山华明泰化工股份有限公司 | Ultrathin flake zinc stearate |
| CN105924344A (en) * | 2016-05-23 | 2016-09-07 | 惠州市志海新威科技有限公司 | High-quality zinc stearate prepared from glyceryl tristearate |
| CN108467344A (en) * | 2018-03-20 | 2018-08-31 | 山东三义实业股份有限公司 | A kind of production method of zinc stearate |
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Application publication date: 20210209 |