CN103524324A - Method for preparing magnesium stearate by normal-pressure melting - Google Patents
Method for preparing magnesium stearate by normal-pressure melting Download PDFInfo
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- CN103524324A CN103524324A CN201310431245.5A CN201310431245A CN103524324A CN 103524324 A CN103524324 A CN 103524324A CN 201310431245 A CN201310431245 A CN 201310431245A CN 103524324 A CN103524324 A CN 103524324A
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- Prior art keywords
- magnesium stearate
- reaction
- magnesium oxide
- normal pressure
- normal
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- 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
Abstract
The invention belongs to the technical field of metallic soap preparation and particularly relates to a method for preparing magnesium stearate by normal-pressure melting. The method comprises the following steps: reacting stearic acid with magnesium oxide in a special feeding way at normal pressure and temperature higher than the melting point of stearic acid; granulating or slicing the material obtained after reaction, thereby obtaining magnesium stearate with very high transparency. The method is low in device investment, small in environment pollution and high in product transparency.
Description
Technical field
The invention belongs to the preparing technical field of metallic soap, be specifically related to a kind of preparation method of normal pressure scorification Magnesium Stearate.
Background technology
Magnesium Stearate be white easily without the fine powder of grittiness, micro-have a special smell, Magnesium Stearate and skin contact after pulverizing have soapy feeling.This product is insoluble in water, ethanol or ether, mainly as lubricant, antisticking agent, glidant.The granulation of suitable especially oils, extract medicament, the particle of making has good mobility and compressibility.In direct compression, be used as glidant.For daily use chemicals and pharmaceutical industries.
The main production technique of Magnesium Stearate is double decomposition: stearic acid and sodium hydroxide reaction are generated to soda soap, then generate water-insoluble Magnesium Stearate and effluent brine with water-soluble magnesium salt.Wash again, separated, the dry finished product that obtains.Application number 201310036332.0 discloses the technique that a kind of double decomposition is prepared Magnesium Stearate, and reaction process is as follows:
C
17H
35COOH+NaOH=C
17H
35COONa+H
2O
2C
17H
35COONa+MgSO
4=(C
17H
35COO)
2Mg+Na
2SO
4
The shortcoming of this technique is that reaction produces a large amount of brine wastes, and environmental stress is very large.
Application number 200910304510.7 discloses a kind of method of producing Magnesium Stearate with pressure reaction still, and the method facility investment is large.
The technological difficulties that normal pressure is produced scorification Magnesium Stearate are to reach after temperature of reaction, and reactant magnesium oxide is reunited rapidly, make the magnesium oxide can not homogeneous reaction, cause the incomplete reaction product of carrying magnesium oxide particle secretly.
Summary of the invention
The preparation method that a kind of normal pressure scorification Magnesium Stearate is provided of the present invention, specifically stearic acid is heated to fusing, at the temperature of 100 ℃～150 ℃, add pre-prepd pasty state magnesium oxide, reaction obtains the Magnesium Stearate that transparency is very high, and main chemical equation is:
2C
17H
35COOH+MgO=(C
17H
35COO)
2Mg+H
2O
Magnesium oxide is treated as to thick pasty state with liquid dispersant, adds reaction system, with a small amount of liquid dispersant, wash several times magnesium oxide container, washes adds reaction system in the lump, and reaction finally obtains Magnesium Stearate.
Liquid dispersant to be can overflow reaction system or decomposition under temperature of reaction, and resolvent do not affect end product quality for selecting foundation, and described liquid dispersant comprises water, ethanol, and wherein water is the most cheap liquid dispersant.
The magnesian preparation of pasty state: by the thick pasty state of suitable quantity of water furnishing for magnesium oxide, add reaction system, repeatedly wash magnesium oxide container with a small amount of moisture, washes adds reaction system in the lump, and reaction finally obtains Magnesium Stearate.
Although magnesium oxide can not molten and water, but can water by magnesium oxide furnishing pasty state, water works the magnesian effect that disperses in the preparation method of normal pressure scorification Magnesium Stearate, water in pasty state magnesium oxide can be vaporized when being greater than 100 ℃, so just avoided magnesium oxide reunion, reaction can uniform and stable be carried out.If magnesium oxide and water are separately added and magnesium oxide will occur reunites, cause reaction not exclusively.
Beneficial effect of the present invention: the preparation of normal pressure scorification Magnesium Stearate of the present invention, under condition of normal pressure, react, do not need reactor, facility investment is little; Preparation process can not produce waste liquid, causes environmental pollution; In reaction process, magnesium oxide can not reunited, and product transparency is high.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, many present invention elaborate.
embodiment
In other container, 16.8 kilograms of magnesium oxide are become to pasty state magnesium oxide with the water stirring of 30 kilograms, standby.
200 kilograms of stearic acid are added to reactor, be warmed to 105 ℃, (because the melting Magnesium Stearate viscosity that reacts completely is large, the present invention need to use high-torque to stir to start stirring.), the hydrogen peroxide that adds 5 kilogram 30%, add slowly pre-prepd pasty state magnesium oxide simultaneously, add the magnesian speed of pasty state take to control that to react not flash be prerequisite, by 10 kg water, wash several times magnesium oxide container, washing water add reaction system in the lump, progressively improve temperature of reaction to 150 ℃, drive reactant and resultant and hydrogen peroxide out of and decompose the water producing, when reaction system becomes after whole clearing, at 150 ℃, maintain 0.5 hour, make to react completely.Then stopped reaction is cut into slices or granulation, obtains target product.
Above-described embodiment is only in order to illustrate technical scheme of the present invention; but not design of the present invention and protection domain are limited; those of ordinary skill in the art modifies or is equal to replacement technical scheme of the present invention; and not departing from aim and the scope of technical scheme, it all should be encompassed in claim scope of the present invention.
Claims (3)
1. a preparation method for normal pressure scorification Magnesium Stearate, is characterized in that: under condition of normal pressure, stearic acid is heated to fusing, at the temperature of 100 ℃～150 ℃, adds pasty state magnesium oxide, and reaction obtains the Magnesium Stearate that transparency is very high.
2. a kind of normal pressure scorification Magnesium Stearate preparation method according to claim 1, it is characterized in that: magnesium oxide is treated as to thick pasty state with liquid dispersant, add reaction system, with liquid dispersant, wash several times magnesium oxide container, washes adds reaction system in the lump, and reaction finally obtains Magnesium Stearate.
3. a kind of normal pressure scorification Magnesium Stearate preparation method according to claim 1, is characterized in that: described liquid dispersant comprises water, ethanol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310431245.5A CN103524324A (en) | 2013-09-22 | 2013-09-22 | Method for preparing magnesium stearate by normal-pressure melting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310431245.5A CN103524324A (en) | 2013-09-22 | 2013-09-22 | Method for preparing magnesium stearate by normal-pressure melting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103524324A true CN103524324A (en) | 2014-01-22 |
Family
ID=49926735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310431245.5A Pending CN103524324A (en) | 2013-09-22 | 2013-09-22 | Method for preparing magnesium stearate by normal-pressure melting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103524324A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016109856A1 (en) | 2015-01-02 | 2016-07-07 | Melaleuca, Inc. | Multi-supplement compositions |
| WO2016109852A2 (en) | 2015-01-02 | 2016-07-07 | Melaleuca, Inc. | Bacterial compositions |
| CN107311855A (en) * | 2017-07-31 | 2017-11-03 | 郑州庆宏塑胶科技有限公司 | A kind of preparation method of stearate |
| US10137164B2 (en) | 2015-01-02 | 2018-11-27 | Melaleuca, Inc. | Dietary supplement compositions |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57182399A (en) * | 1981-05-02 | 1982-11-10 | Asahi Denka Kogyo Kk | Manufacture of metal soap bar |
| CN101337877A (en) * | 2008-08-07 | 2009-01-07 | 百利合化工（中山）有限公司 | Method for preparing higher fatty acid alkali salt |
| CN101648859A (en) * | 2009-07-02 | 2010-02-17 | 荀育军 | Production formula and novel process of magnesium stearate |
-
2013
- 2013-09-22 CN CN201310431245.5A patent/CN103524324A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57182399A (en) * | 1981-05-02 | 1982-11-10 | Asahi Denka Kogyo Kk | Manufacture of metal soap bar |
| CN101337877A (en) * | 2008-08-07 | 2009-01-07 | 百利合化工（中山）有限公司 | Method for preparing higher fatty acid alkali salt |
| CN101648859A (en) * | 2009-07-02 | 2010-02-17 | 荀育军 | Production formula and novel process of magnesium stearate |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016109856A1 (en) | 2015-01-02 | 2016-07-07 | Melaleuca, Inc. | Multi-supplement compositions |
| WO2016109852A2 (en) | 2015-01-02 | 2016-07-07 | Melaleuca, Inc. | Bacterial compositions |
| US10137164B2 (en) | 2015-01-02 | 2018-11-27 | Melaleuca, Inc. | Dietary supplement compositions |
| US10576112B2 (en) | 2015-01-02 | 2020-03-03 | Melaleuca, Inc. | Bacterial compositions |
| US11207388B2 (en) | 2015-01-02 | 2021-12-28 | Melaleuca, Inc. | Multi-supplement compositions |
| US11273195B2 (en) | 2015-01-02 | 2022-03-15 | Melaleuca, Inc. | Dietary supplement compositions |
| EP3973972A1 (en) | 2015-01-02 | 2022-03-30 | Melaleuca, Inc. | Multi-supplement compositions |
| EP4019028A1 (en) | 2015-01-02 | 2022-06-29 | Melaleuca, Inc. | Bacterial compositions |
| US11433107B2 (en) | 2015-01-02 | 2022-09-06 | Melaleuca, Inc. | Bacterial compositions |
| CN107311855A (en) * | 2017-07-31 | 2017-11-03 | 郑州庆宏塑胶科技有限公司 | A kind of preparation method of stearate |
| CN107311855B (en) * | 2017-07-31 | 2020-11-10 | 郑州庆宏塑胶科技有限公司 | Preparation method of stearate |
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Application publication date: 20140122 |