AU636887B2 - Finely powdered magnesium hydroxide and method for preparing it - Google Patents
Finely powdered magnesium hydroxide and method for preparing itInfo
- Publication number
- AU636887B2 AU636887B2 AU55281/90A AU5528190A AU636887B2 AU 636887 B2 AU636887 B2 AU 636887B2 AU 55281/90 A AU55281/90 A AU 55281/90A AU 5528190 A AU5528190 A AU 5528190A AU 636887 B2 AU636887 B2 AU 636887B2
- Authority
- AU
- Australia
- Prior art keywords
- ppm
- magnesium hydroxide
- water
- preparing
- finely powdered
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/02—Magnesia
- C01F5/06—Magnesia by thermal decomposition of magnesium compounds
- C01F5/10—Magnesia by thermal decomposition of magnesium compounds by thermal decomposition of magnesium chloride with water vapour
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/14—Magnesium hydroxide
- C01F5/16—Magnesium hydroxide by treating magnesia, e.g. calcined dolomite, with water or solutions of salts not containing magnesium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
Abstract
Finely powdered magnesium hydroxide, in particular for use as a flame retardant filler for plastic compounds, in which the particles may have a thin coating of a surface active substance. The particle size of the magnesium hydroxide, as determined by laser diffraction, is less than 10 mu m and the mean particle size is greater than 0.8 mu m but not more than 3 mu m. The magnesium hydroxide has a water-soluble ionic impurities content, i.e., Ca<++>, Na<+>, K<+>, SO4<--> and Cl<->, below the following limits (in parts by mass): Ca<++> < 1000 ppm, Na<+> < 20 ppm, K<+> < 20 ppm, SO4<--> < 1500 ppm and Cl<-> < 1000 ppm, and Mn, Ni and Cu contents below the following limits (in parts by mass): MnO < 100 ppm, NiO < 100 ppm and CuO < 10 ppm. In the method for preparing the magnesium hydroxide, magnesium oxide obtained by spray roasting a magnesium chloride solution free of impurities is hydrated by mixing with water, the resultant magnesium hydroxide is filtered off and the filter cake material is then washed with water.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT1073/89 | 1989-05-05 | ||
| AT1073/89A AT392774B (en) | 1989-05-05 | 1989-05-05 | FINE POWDERED MAGNESIUM HYDROXIDE AND METHOD FOR THE PRODUCTION THEREOF |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU5528190A AU5528190A (en) | 1990-11-29 |
| AU636887B2 true AU636887B2 (en) | 1993-05-13 |
Family
ID=3506013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU55281/90A Withdrawn - After Issue AU636887B2 (en) | 1989-05-05 | 1990-05-02 | Finely powdered magnesium hydroxide and method for preparing it |
Country Status (16)
| Country | Link |
|---|---|
| EP (1) | EP0427817B1 (en) |
| JP (1) | JPH03505863A (en) |
| KR (1) | KR920700162A (en) |
| CN (1) | CN1046878A (en) |
| AT (2) | AT392774B (en) |
| AU (1) | AU636887B2 (en) |
| BR (1) | BR9006763A (en) |
| CA (1) | CA2032470C (en) |
| CZ (1) | CZ219790A3 (en) |
| DD (1) | DD294234A5 (en) |
| DE (1) | DE59004217D1 (en) |
| HU (1) | HUT56795A (en) |
| IL (1) | IL94273A (en) |
| SK (1) | SK219790A3 (en) |
| WO (1) | WO1990013516A1 (en) |
| ZA (1) | ZA903359B (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL112385A (en) * | 1994-01-21 | 1998-08-16 | Flamemag International Gie | Process for preparing a flame retardant magnesium hydroxide |
| JP3836649B2 (en) | 1999-11-22 | 2006-10-25 | 協和化学工業株式会社 | Semiconductor sealing resin composition and molded product thereof |
| KR20000049740A (en) * | 2000-04-26 | 2000-08-05 | 김철우 | Making process of magnesia powder by spray roasting method |
| WO2001083620A1 (en) * | 2000-05-02 | 2001-11-08 | Kyowa Chemical Industry Co., Ltd. | Resin composition for electric and electronic appliances |
| JP2002371198A (en) * | 2001-04-11 | 2002-12-26 | Sakai Chem Ind Co Ltd | Flame retardant resin composition blended with high purity zinc borate |
| CN100375778C (en) * | 2005-09-23 | 2008-03-19 | 清华大学 | Liquid amonia pressurized precipitation and hydrothermal modification process for preparing magnesium hydroxide fire retardant |
| JP4201792B2 (en) * | 2005-10-25 | 2008-12-24 | 神島化学工業株式会社 | Flame retardant, flame retardant resin composition and molded article |
| KR101380184B1 (en) * | 2006-02-01 | 2014-04-01 | 스미또모 가가꾸 가부시키가이샤 | Micropore forming agent for porous resin film and composition for porous resin film containing the agent |
| KR20080114779A (en) * | 2006-03-31 | 2008-12-31 | 알베마를 코포레이션 | Magnesium hydroxide with improved compounding and viscosity performance |
| RU2008143217A (en) * | 2006-03-31 | 2010-05-10 | Альбемарл Корпорейшн (Us) | MAGNESIUM HYDROXIDE HAVING IMPROVED MIXTURE AND VISCOSITY CHARACTERISTICS |
| WO2008120746A1 (en) * | 2007-03-30 | 2008-10-09 | Ube Material Industries, Ltd. | Magnesium hydroxide powder and method for producing the same |
| WO2009153936A1 (en) * | 2008-06-18 | 2009-12-23 | 丸尾カルシウム株式会社 | Magnesium hydrate composition and manufacturing method thereof, and resin composition and molded article thereof |
| JP2020045349A (en) * | 2011-08-16 | 2020-03-26 | ピュラック バイオケム ビー． ブイ． | Recovery of carboxylic acids from magnesium salts thereof through precipitation using hydrochloric acid, useful for fermentation broth processing |
| WO2015051482A1 (en) * | 2013-10-11 | 2015-04-16 | 河北联合大学 | Method for manufacturing sheet monodisperse nano-magnesium hydroxide by using magnesite |
| CN104925838B (en) * | 2015-07-15 | 2016-12-28 | 后英集团海城市高新技术产品有限公司 | A kind of efficient oxidation magnesium prepares magnesium hydroxide technique |
| EP3575267A1 (en) * | 2018-06-01 | 2019-12-04 | Omya International AG | Development of surface-treated magnesium hydroxide-comprising material |
| GR20180100313A (en) * | 2018-07-12 | 2020-03-18 | Τερνα Λευκολιθοι Ανωνυμος Μεταλλευτικη, Εμπορικη, Τεχνικη, Βιομηχανικη Εταιρεια Α.Μ.Ε. Τ.Β.Ε | Magnesium hydroxide production method |
| CN110182832A (en) * | 2019-05-25 | 2019-08-30 | 邢台镁熙环保材料有限公司 | A kind of petroleum catalyst special magnesium oxide production technology |
| CN115893459A (en) * | 2022-12-20 | 2023-04-04 | 山东沃特斯德新材料科技有限公司 | Preparation method of multifunctional water-soluble nano magnesium hydroxide stock solution |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT335973B (en) * | 1975-03-12 | 1977-04-12 | Oesterr Amerikan Magnesit | PROCESS FOR THE PREPARATION OF AQUATIC SOLUTIONS OF MAGNESIUM CHLORIDE |
| AT356630B (en) * | 1978-12-13 | 1980-05-12 | Ruthner Industrieanlagen Ag | METHOD FOR PRODUCING MAGNESIUM OXYD SINTER |
| DD205412A1 (en) * | 1982-07-02 | 1983-12-28 | Kali Veb K | PROCESS FOR CLEANING CHLORIDE-CONTAINING MAGNESIUM OXIDE |
| US4695445A (en) * | 1985-08-14 | 1987-09-22 | Asahi Glass Company Ltd. | Magnesium hydroxide and process for its production |
| AT388392B (en) * | 1987-06-26 | 1989-06-12 | Veitscher Magnesitwerke Ag | METHOD FOR THE PRODUCTION OF PURE MAGNESIUM OXIDE, IN PARTICULAR FOR THE PRODUCTION OF REFRACTORY-RESISTANT PRODUCTS |
-
1989
- 1989-05-05 AT AT1073/89A patent/AT392774B/en not_active IP Right Cessation
-
1990
- 1990-05-02 AU AU55281/90A patent/AU636887B2/en not_active Withdrawn - After Issue
- 1990-05-02 CA CA002032470A patent/CA2032470C/en not_active Expired - Lifetime
- 1990-05-02 JP JP2506271A patent/JPH03505863A/en active Pending
- 1990-05-02 EP EP90906047A patent/EP0427817B1/en not_active Expired - Lifetime
- 1990-05-02 BR BR909006763A patent/BR9006763A/en not_active Application Discontinuation
- 1990-05-02 DE DE90906047T patent/DE59004217D1/en not_active Expired - Lifetime
- 1990-05-02 WO PCT/AT1990/000043 patent/WO1990013516A1/en active IP Right Grant
- 1990-05-02 AT AT90906047T patent/ATE100070T1/en not_active IP Right Cessation
- 1990-05-02 HU HU903640A patent/HUT56795A/en unknown
- 1990-05-03 CZ CS902197A patent/CZ219790A3/en unknown
- 1990-05-03 DD DD90340337A patent/DD294234A5/en not_active IP Right Cessation
- 1990-05-03 SK SK2197-90A patent/SK219790A3/en not_active IP Right Cessation
- 1990-05-03 IL IL9427390A patent/IL94273A/en active IP Right Review Request
- 1990-05-03 ZA ZA903359A patent/ZA903359B/en unknown
- 1990-05-04 CN CN90102696A patent/CN1046878A/en active Pending
- 1990-12-07 KR KR1019900702575A patent/KR920700162A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| IL94273A0 (en) | 1991-03-10 |
| ATA107389A (en) | 1990-11-15 |
| DE59004217D1 (en) | 1994-02-24 |
| SK278418B6 (en) | 1997-05-07 |
| JPH03505863A (en) | 1991-12-19 |
| KR920700162A (en) | 1992-02-19 |
| DD294234A5 (en) | 1991-09-26 |
| HU903640D0 (en) | 1991-07-29 |
| CZ219790A3 (en) | 1998-04-15 |
| BR9006763A (en) | 1991-08-13 |
| SK219790A3 (en) | 1997-05-07 |
| AU5528190A (en) | 1990-11-29 |
| CA2032470A1 (en) | 1990-11-06 |
| ATE100070T1 (en) | 1994-01-15 |
| WO1990013516A1 (en) | 1990-11-15 |
| AT392774B (en) | 1991-06-10 |
| ZA903359B (en) | 1991-02-27 |
| CA2032470C (en) | 2000-09-05 |
| EP0427817A1 (en) | 1991-05-22 |
| HUT56795A (en) | 1991-10-28 |
| EP0427817B1 (en) | 1994-01-12 |
| IL94273A (en) | 1995-03-30 |
| CN1046878A (en) | 1990-11-14 |
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