JPH0397618A - Basic magnesium carbonate and production thereof - Google Patents
Basic magnesium carbonate and production thereofInfo
- Publication number
- JPH0397618A JPH0397618A JP23283089A JP23283089A JPH0397618A JP H0397618 A JPH0397618 A JP H0397618A JP 23283089 A JP23283089 A JP 23283089A JP 23283089 A JP23283089 A JP 23283089A JP H0397618 A JPH0397618 A JP H0397618A
- Authority
- JP
- Japan
- Prior art keywords
- magnesium carbonate
- basic magnesium
- suspension
- present
- ray diffraction
- 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.)
- Pending
Links
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 title claims abstract description 50
- 239000001095 magnesium carbonate Substances 0.000 title claims abstract description 50
- 229910000021 magnesium carbonate Inorganic materials 0.000 title claims abstract description 50
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 238000002441 X-ray diffraction Methods 0.000 claims abstract description 9
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 239000007900 aqueous suspension Substances 0.000 claims description 9
- 239000011777 magnesium Substances 0.000 claims description 5
- 230000005484 gravity Effects 0.000 abstract description 8
- 239000001509 sodium citrate Substances 0.000 abstract description 2
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 abstract description 2
- 239000000725 suspension Substances 0.000 abstract 4
- 238000010586 diagram Methods 0.000 abstract 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 abstract 1
- 239000000347 magnesium hydroxide Substances 0.000 abstract 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 abstract 1
- 235000012254 magnesium hydroxide Nutrition 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 12
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000011734 sodium Substances 0.000 description 7
- 229910052708 sodium Inorganic materials 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- -1 feed Substances 0.000 description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- 229960003975 potassium Drugs 0.000 description 3
- 238000002076 thermal analysis method Methods 0.000 description 3
- 229910019440 Mg(OH) Inorganic materials 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- WXUAQHNMJWJLTG-VKHMYHEASA-N (S)-methylsuccinic acid Chemical compound OC(=O)[C@@H](C)CC(O)=O WXUAQHNMJWJLTG-VKHMYHEASA-N 0.000 description 1
- CYDQOEWLBCCFJZ-UHFFFAOYSA-N 4-(4-fluorophenyl)oxane-4-carboxylic acid Chemical compound C=1C=C(F)C=CC=1C1(C(=O)O)CCOCC1 CYDQOEWLBCCFJZ-UHFFFAOYSA-N 0.000 description 1
- 238000004438 BET method Methods 0.000 description 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical class [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 229940069428 antacid Drugs 0.000 description 1
- 239000003159 antacid agent Substances 0.000 description 1
- 230000001458 anti-acid effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- XFTRTWQBIOMVPK-UHFFFAOYSA-N citramalic acid Chemical compound OC(=O)C(O)(C)CC(O)=O XFTRTWQBIOMVPK-UHFFFAOYSA-N 0.000 description 1
- 238000011437 continuous method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000002050 diffraction method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000706 filtrate Chemical class 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000008141 laxative Substances 0.000 description 1
- 230000002475 laxative effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- AVTYONGGKAJVTE-OLXYHTOASA-L potassium L-tartrate Chemical compound [K+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O AVTYONGGKAJVTE-OLXYHTOASA-L 0.000 description 1
- 239000001508 potassium citrate Substances 0.000 description 1
- 229960002635 potassium citrate Drugs 0.000 description 1
- QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical compound [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 description 1
- 235000011082 potassium citrates Nutrition 0.000 description 1
- PHZLMBHDXVLRIX-UHFFFAOYSA-M potassium lactate Chemical compound [K+].CC(O)C([O-])=O PHZLMBHDXVLRIX-UHFFFAOYSA-M 0.000 description 1
- 239000001521 potassium lactate Substances 0.000 description 1
- 235000011085 potassium lactate Nutrition 0.000 description 1
- 229960001304 potassium lactate Drugs 0.000 description 1
- SVICABYXKQIXBM-UHFFFAOYSA-L potassium malate Chemical compound [K+].[K+].[O-]C(=O)C(O)CC([O-])=O SVICABYXKQIXBM-UHFFFAOYSA-L 0.000 description 1
- 239000001415 potassium malate Substances 0.000 description 1
- 235000011033 potassium malate Nutrition 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 239000001472 potassium tartrate Substances 0.000 description 1
- 229940111695 potassium tartrate Drugs 0.000 description 1
- 235000011005 potassium tartrates Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- HELHAJAZNSDZJO-OLXYHTOASA-L sodium L-tartrate Chemical compound [Na+].[Na+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O HELHAJAZNSDZJO-OLXYHTOASA-L 0.000 description 1
- 229960001790 sodium citrate Drugs 0.000 description 1
- 239000001540 sodium lactate Substances 0.000 description 1
- 235000011088 sodium lactate Nutrition 0.000 description 1
- 229940005581 sodium lactate Drugs 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000001433 sodium tartrate Substances 0.000 description 1
- 229960002167 sodium tartrate Drugs 0.000 description 1
- 235000011004 sodium tartrates Nutrition 0.000 description 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、新規な塩基性炭酸マグネシウム及びその製造
方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a novel basic magnesium carbonate and a method for producing the same.
（従来技術）
現在、一般に塩基性炭酸マグネシウムと呼ばれている化
合物は、
（３〜４）ＭｇＣＯ，・Ｍｇ（○Ｈ）ｚ・（３〜４）Ｈ
．０の組成式で示され、比表面積が１０〜４ ０ ｍ”
／ｇであり、その粉末の見掛け比重は０．２〜０．３ｇ
／ｃｍ３の範囲のものである。その用途としては、ゴム
用フィラー、飼料用、制酸剤、下剤等が挙げられ、広い
分野で使用されている。(Prior art) Currently, the compound generally called basic magnesium carbonate is (3-4)MgCO, ・Mg(○H)z・(3-4)H
．． It has a compositional formula of 0 and a specific surface area of 10 to 40 m".
/g, and the apparent specific gravity of the powder is 0.2-0.3g.
/cm3. Its uses include rubber filler, feed, antacid, laxative, etc., and it is used in a wide range of fields.
（発明が解決しようとする課題〉
しかしながら、この塩基性炭酸マグネシウムは上記した
ように見掛け比重が０． ２〜０．３ ｇ／ｃｍ’と低
いために嵩高く、袋詰めや輸送の点で取扱いが困難であ
った。(Problem to be solved by the invention) However, as mentioned above, this basic magnesium carbonate has a low apparent specific gravity of 0.2 to 0.3 g/cm' and is therefore bulky, making it difficult to handle in terms of bagging and transportation. was difficult.
（課題を解決するための手段〉
本発明者らは、従来の塩基性炭酸マグネシウムの欠点を
改良し、見掛け比重の大きい塩基性炭酸マグネシウムを
得ることを目的として研究を重ねてきた。その結果、従
来の塩基性炭酸マグネシウムと組戒式やＸ線回折による
ピーク位置が異なる新規な塩基性炭酸マグネシウムの合
或に成功し、また、その見掛け比重が０． ４ ｇ／ｃ
ｍ’以上であることを見出し、本発明を完威させるに至
った。(Means for Solving the Problems) The present inventors have conducted repeated research with the aim of improving the drawbacks of conventional basic magnesium carbonate and obtaining basic magnesium carbonate with a large apparent specific gravity.As a result, We have succeeded in combining conventional basic magnesium carbonate with a new basic magnesium carbonate that has a different peak position in combination formula and X-ray diffraction, and its apparent specific gravity is 0.4 g/c.
m' or more, and have completed the present invention.
即ち、本発明は、
一般式
ｍＭｇｃ Ｏｚ−Ｍｇ（Ｏ Ｈ）ｚ・ｎＨｚ○（但し、
ｌ≦ｍ≦２．５、Ｑ＜ｎ≦３である〕で示され、Ｘ線回
折において２θで１６．８〜１７．４゜の範囲にピーク
を有することを特徴とする塩基性炭酸マグネシウムであ
る。That is, the present invention has the general formula mMgc Oz-Mg(OH)z・nHz○ (however,
l≦m≦2.5, Q<n≦3], and is characterized by having a peak in the range of 16.8 to 17.4° at 2θ in X-ray diffraction. be.
本発明の塩基性炭酸マグネシウムは、上記一般弐で示さ
れるように、従来の塩基性炭酸マグネシウムに比べてＭ
ｇ（ＯＨ）ｚで表わされる量が相対的に多い。As shown in General 2 above, the basic magnesium carbonate of the present invention has a higher molecular weight than conventional basic magnesium carbonate.
The amount expressed by g(OH)z is relatively large.
また、本発明の塩基性炭酸マグネシウムは、Ｘ線回折に
おいて２θで１６．８〜１７．６“の範囲、通常は１７
．１゜近辺に特徴的なピークを有する。In addition, the basic magnesium carbonate of the present invention has a 2θ value in the range of 16.8 to 17.6″ in X-ray diffraction, usually 17
．． It has a characteristic peak around 1°.
このピークは、従来の塩基性炭酸マグネシウムでは現わ
れないピークである。このことから、本発明の塩基性炭
酸マグネシウムは、従来のものと異なる結晶構造を有す
るものであることがわかる。This peak does not appear in conventional basic magnesium carbonate. This shows that the basic magnesium carbonate of the present invention has a crystal structure different from that of conventional magnesium carbonate.
上記のピークの他にも、本発明の塩基性炭酸マグネシウ
ムは、２θで２７．４゜及び３ ２． ５ ’近辺にピ
ークを有する。さらに、本発明の塩基性炭酸マグネシウ
ムは、従来の塩基性炭酸マグネシウムに見られる２θで
９．６゜近辺のピークが認められない。In addition to the above peaks, the basic magnesium carbonate of the present invention has a peak of 27.4° and 32.0° in 2θ. It has a peak near 5'. Furthermore, the basic magnesium carbonate of the present invention does not exhibit a peak around 9.6° in 2θ, which is observed in conventional basic magnesium carbonate.
このことからも本発明の塩基性炭酸マグネシウムが従来
にない新規なものであることがわかる。This also shows that the basic magnesium carbonate of the present invention is novel and unprecedented.
本発明の塩基性炭酸マグネシウムは、一般に０．４ｇ／
ｃ一以上、特に０．５〜０．８ｇ／ｃ−の見掛け比重を
有し、また、５０〜２ ５ ０ ｍ”／ｇの比表面積を
有する。The basic magnesium carbonate of the present invention is generally 0.4 g/
It has an apparent specific gravity of c1 or more, especially 0.5 to 0.8 g/c, and a specific surface area of 50 to 250 m''/g.
本発明の塩基性炭酸マグネシウムは、どのような方法に
よって得ても良いが、次に述べる方法によって容易に得
ることができる。The basic magnesium carbonate of the present invention may be obtained by any method, but it can be easily obtained by the method described below.
即ち、炭酸マグネシウムの水性懸濁液をヒドロキシカル
ポン酸塩の存在下に加熱する方法である。That is, it is a method in which an aqueous suspension of magnesium carbonate is heated in the presence of a hydroxycarponate.
炭酸マグネシウムとしては、従来公知のものが何ら制限
なく採用され、例えば、無水物やろ水塩が好適に用いら
れる。As the magnesium carbonate, any conventionally known magnesium carbonate can be used without any restriction, and for example, anhydride and filtrate salt are preferably used.
上記の炭酸マグネシウムを水に懸濁させることによって
水性懸濁液が形威される。水性懸濁液中の炭酸マグネシ
ウムの濃度は、本発明の塩基性炭酸マグネシウムを安定
して製造するためにはＭｇＯとして０． １〜１．０ｍ
ｏｌ／１の範囲とすることが好ましい。特に、８ ０
ｍ２／ｇ以上の高比表面積の塩基性炭酸マグネシウムを
得ることを目的とする場合には、炭酸マグネシウムの濃
度はＭｇ○として０．１〜０．６ｍｏ６／ｉ！の範囲で
あることが好ましい。An aqueous suspension is formed by suspending the above magnesium carbonate in water. In order to stably produce the basic magnesium carbonate of the present invention, the concentration of magnesium carbonate in the aqueous suspension should be 0.0% as MgO. 1-1.0m
It is preferable to set it in the range of ol/1. In particular, 80
When the purpose is to obtain basic magnesium carbonate with a high specific surface area of m2/g or more, the concentration of magnesium carbonate is 0.1 to 0.6 mo6/i as Mg○! It is preferable that it is in the range of .
本発明において用いられるヒドロキシカルポン酸塩は、
公知の化合物が何ら制限されず用いられる。水への溶解
性の点からアルカリ金属塩、特にナトリウム塩又はカリ
ウム塩が好適に用いられる。The hydroxycarponate used in the present invention is
Known compounds can be used without any restriction. From the viewpoint of solubility in water, alkali metal salts, particularly sodium salts or potassium salts, are preferably used.
本発明において好適に用いられるヒドロキシカルボン酸
塩を具体的に例示すると、例えば、３−オキシヘキサン
酸カリウム、β−オキシカルボン酸ナトリウム、クエン
酸ナトリウム、クエン酸カリウム、α−オキシーｎ一酪
酸−カリウム、α−オキシイソ酪酸ナトリウム、α−オ
キシーｎ一吉草酸ナトリウム、α−オキシイソ吉草酸ナ
トリウム、乳酸ナトリウム、乳酸カリウム、酒石酸カリ
ウム、酒石酸ナトリウム、エチルタルトロン酸カリウム
、エチルタルトロン酸ナトリウム、ｎ−プロビルタルト
ロン酸カリウム、オキシメチルマロン酸ナトリウム、リ
ンゴ酸カリウム、α−オキシーα′メチルコハク酸ナト
リウム、α−メチルリンゴ酸ナトリウムなどである。Specific examples of hydroxycarboxylate salts preferably used in the present invention include potassium 3-oxyhexanoate, sodium β-oxycarboxylate, sodium citrate, potassium citrate, potassium α-oxy-n-monobutyrate. , sodium α-oxyisobutyrate, sodium α-oxy-n monovalerate, sodium α-oxyisovalerate, sodium lactate, potassium lactate, potassium tartrate, sodium tartrate, potassium ethyltartronate, sodium ethyltartronate, n-pro Potassium biltartronate, sodium oxymethylmalonate, potassium malate, sodium α-oxy-α′methylsuccinate, sodium α-methylmalate, and the like.
ヒドロキシカルボン酸塩の使用量は特に制限されるもの
ではないが、本発明の塩基性炭酸マグネシウムを安定し
て製造するためには、原料である炭酸マグネシウムに対
する重量比で０． １〜５の範囲、さらには０．５〜２
の範囲であることが好ましい。The amount of hydroxycarboxylate used is not particularly limited, but in order to stably produce the basic magnesium carbonate of the present invention, the weight ratio to the raw material magnesium carbonate should be 0. Range of 1 to 5, even 0.5 to 2
It is preferable that it is in the range of .
原料である炭酸マグネシウムの水性懸濁液の加熱の方法
は、従来公知の方法が何ら制限なく採用される。例えば
、反応槽内にヒーターを投入する方法、反応槽の槽壁の
外側にヒーターを設置して槽壁を加熱する方法、蒸気を
直接反応液に吹込んで加熱する方法等が挙げられる。As a method for heating the aqueous suspension of magnesium carbonate as a raw material, any conventionally known method may be employed without any restriction. Examples include a method of inserting a heater into the reaction tank, a method of installing a heater outside the wall of the reaction tank to heat the tank wall, and a method of directly blowing steam into the reaction liquid to heat it.
水性懸濁液は一般に５０℃以上沸点未満の温度、特に好
ましくは、８０〜９５℃で加熱することによって、十分
に分解反応を起こさせることができる。反応時間は、上
記温度に昇温後、２〜６時間の範囲から選択される。上
記した塩基性炭酸マグネシウムの製造方法は、パンチ式
及び連続式のいずれの方法でも行うことができる。The aqueous suspension can be heated generally at a temperature of 50°C or higher and below the boiling point, particularly preferably at 80 to 95°C, to cause a sufficient decomposition reaction. The reaction time is selected from the range of 2 to 6 hours after the temperature is raised to the above temperature. The above-described method for producing basic magnesium carbonate can be carried out by either a punch method or a continuous method.
（効 果）
本発明の塩基性炭酸マグネシウムは、従来のものと組戒
式が全く異なり、Ｘ線回折におけるピークの位置も異な
ることから、全く新らしい化合物であるといえる。(Effects) The basic magnesium carbonate of the present invention can be said to be a completely new compound since its composition is completely different from that of conventional ones and the peak position in X-ray diffraction is also different.
さらに、本発明の塩基性炭酸マグネシウムは、見掛け比
重が従来の塩基性炭酸マグネシウムに比べて大きく、ま
た比表面積も大きいため、種々の高充填剤、特に感熱紙
又は感熱フィルムの填剤として好適に使用でき、また農
薬や香料の担体としても用い得る。Furthermore, since the basic magnesium carbonate of the present invention has a larger apparent specific gravity and a larger specific surface area than conventional basic magnesium carbonate, it is suitable as a filler for various high fillers, especially thermal paper or film. It can also be used as a carrier for pesticides and fragrances.
以下に、本発明を具体的に説明するために実施例を掲げ
るが、本発明はこれら実施例に限定されるものではない
。Examples are given below to specifically explain the present invention, but the present invention is not limited to these Examples.
実施例Ｉ
Ｍｇ Ｃ Ｏ ３・３Ｈｚθのケーキ（水分７０％）５
．２ｋｇにクエン酸ソーダ１． ０ ｋｇを水に溶解せ
しめたものを加え、さらに水を加えてＭｇＣＯｔ・３Ｈ
．θの水性懸濁液７０ｊ！を得た。この水性懸濁液を反
応槽中に入れ、９０℃まで１時間で昇温し、９０〜９３
℃で３時間反応させた。Example I Mg CO 3.3Hzθ cake (70% moisture)5
．． 2 kg of soda citrate 1. Add 0 kg dissolved in water, then add water to make MgCOt・3H
．． Aqueous suspension 70j of θ! I got it. This aqueous suspension was placed in a reaction tank, and the temperature was raised to 90°C in 1 hour to reach a temperature of 90-93°C.
The reaction was carried out at ℃ for 3 hours.
反応後、ろ過水洗し、１０５℃で乾燥させ、塩基性炭酸
マグネシウムを得た。化学分析の結果より、１．３Ｍｇ
ＣＯｚ・Ｍｇ（ＯＨ）ｔ・１．２Ｈｚθで示されること
がわかった。ＢＥＴ法で求めた比表面積は、８ ４ ｔ
ｓ”／ｇで、コールターカウンター法により求めた平均
粒径は３． ０μｍであった。）１回折の結果、第１図
に示したように２θで１７．１゜． ２ ７． ４゜？
び３ ２． ５ ’にピークが認められ、従来の塩基性
炭酸マグネシウムに見られる９．６゛近辺のピークは認
められなかった。２θで１ ７． ０ ’のピークの半
価巾は０．２５゜であった，さらに熱分析（ＤＴＡ−Ｔ
Ｇ）結果を第２図に示した。After the reaction, it was filtered, washed with water, and dried at 105°C to obtain basic magnesium carbonate. From the results of chemical analysis, 1.3Mg
It was found that it is expressed as COz・Mg(OH)t・1.2Hzθ. The specific surface area determined by the BET method is 8 4 t
s"/g, and the average particle size determined by the Coulter counter method was 3.0 μm.) As a result of one diffraction, as shown in Figure 1, it was 17.1° in 2θ. 2 7. 4°?
and 3 2. A peak was observed at 5', and a peak around 9.6', which is observed in conventional basic magnesium carbonate, was not observed. 1 at 2θ 7. The half-width of the 0' peak was 0.25°.Furthermore, thermal analysis (DTA-T
G) The results are shown in Figure 2.
実施例２
ＭｇＣＯ，・３Ｈ■θのケーキ（水分７０％）２．６ｋ
ｇにし、それ以外は実施例１と同様に反応した。化学分
析の結果、１． ５ Ｍｇ Ｃ Ｏ ａ・Ｍｇ（Ｏ Ｈ
Ｌ４．３ Ｈ ｔ○で示されることがわかった．ＢＥ
Ｔ法で求めた比表面積は１ ２ ０ ｍ”／ｇで、平均
粒径は２．８μｍであった。又、ＸＮｉＡ回折及び熱分
析の結果は、実施例１の結果と同じであった。Example 2 MgCO, ・3H■θ cake (70% water) 2.6k
g, and the reaction was otherwise carried out in the same manner as in Example 1. As a result of chemical analysis, 1. 5 Mg C O a・Mg(OH
It was found that it is indicated by L4.3 H t○. BE
The specific surface area determined by the T method was 1 20 m''/g, and the average particle size was 2.8 μm. Also, the results of XNiA diffraction and thermal analysis were the same as those of Example 1.
実施例３
炭酸マグネシウムの水性懸濁液の濃度、ヒドロキシカル
ボン酸塩の種類及び使用量、昇温時間、反応温度を第１
表に示したとおりにした他は、実施例１と同様にして塩
基性炭酸マグネシウムを得た。結果を第１表に示した。Example 3 The concentration of the aqueous suspension of magnesium carbonate, the type and amount of hydroxycarboxylate used, the heating time, and the reaction temperature were
Basic magnesium carbonate was obtained in the same manner as in Example 1 except as shown in the table. The results are shown in Table 1.
尚、Ｘ線回折の結果、２θで１７．１゜． ２ ７．
４゜３２．５゜にピークが認められた．
また、ヒドロキシカルボン酸を用いなかったこと以外は
上記と同様にした結果を第１表にｍ７として併記した．
ヒドロキシカルボン酸を用いない場合は、従来の４Ｍｇ
ＣＯ，・Ｍｇ（○Ｈｈ・４Ｈ２０で示される塩基性炭酸
マグネシウムが得られた。In addition, as a result of X-ray diffraction, it is 17.1° at 2θ. 2 7.
A peak was observed at 4°32.5°. In addition, the results of the same procedure as above except that hydroxycarboxylic acid was not used are also listed in Table 1 as m7.
If hydroxycarboxylic acid is not used, conventional 4Mg
Basic magnesium carbonate represented by CO,.Mg(○Hh.4H20) was obtained.
第１図及び第２図は、実施例１で得られた本発明の塩基
性炭酸マグネシウムＸ線回折チャート及び熱分析（ＤＴ
Ａ−ＴＧ）チャートを夫々示す。Figures 1 and 2 show the basic magnesium carbonate X-ray diffraction chart and thermal analysis (DT) of the present invention obtained in Example 1.
A-TG) charts are shown respectively.
Claims (2)
、１≦ｍ≦２．５、０＜ｎ≦３である）で示され、Ｘ線
回折において２θで１６．８〜１７．４°の範囲にピー
クを有することを特徴とする塩基性炭酸マグネシウム。(1) It is represented by the general formula mMgCO_3・Mg(OH)_2・nH_2O (1≦m≦2.5, 0<n≦3), and is 16.8 to 17.4 at 2θ in X-ray diffraction. Basic magnesium carbonate characterized by having a peak in the range of °.
ボン酸塩の存在下に加熱することを特徴とする特許請求
の範囲第（１）項記載の塩基性炭酸マグネシウムの製造
方法。(2) The method for producing basic magnesium carbonate according to claim (1), which comprises heating an aqueous suspension of magnesium carbonate in the presence of a hydroxycarboxylate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23283089A JPH0397618A (en) | 1989-09-11 | 1989-09-11 | Basic magnesium carbonate and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23283089A JPH0397618A (en) | 1989-09-11 | 1989-09-11 | Basic magnesium carbonate and production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0397618A true JPH0397618A (en) | 1991-04-23 |
Family
ID=16945458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23283089A Pending JPH0397618A (en) | 1989-09-11 | 1989-09-11 | Basic magnesium carbonate and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0397618A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008123566A1 (en) * | 2007-04-02 | 2008-10-16 | Kyowa Chemical Industry Co., Ltd. | Carbonic acid group-containing magnesium hydroxide particle and method for producing the same |
-
1989
- 1989-09-11 JP JP23283089A patent/JPH0397618A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008123566A1 (en) * | 2007-04-02 | 2008-10-16 | Kyowa Chemical Industry Co., Ltd. | Carbonic acid group-containing magnesium hydroxide particle and method for producing the same |
| JP5202514B2 (en) * | 2007-04-02 | 2013-06-05 | 協和化学工業株式会社 | Carbonate group-containing magnesium hydroxide particles and method for producing the same |
| US9346683B2 (en) | 2007-04-02 | 2016-05-24 | Kyowa Chemical Industry Co., Ltd. | Carbonate radical-containing magnesium hydroxide particle and manufacturing method thereof |
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