JPH0684518B2 - Method for producing sodium percarbonate composition having excellent fluidity - Google Patents
Method for producing sodium percarbonate composition having excellent fluidityInfo
- Publication number
- JPH0684518B2 JPH0684518B2 JP62286667A JP28666787A JPH0684518B2 JP H0684518 B2 JPH0684518 B2 JP H0684518B2 JP 62286667 A JP62286667 A JP 62286667A JP 28666787 A JP28666787 A JP 28666787A JP H0684518 B2 JPH0684518 B2 JP H0684518B2
- Authority
- JP
- Japan
- Prior art keywords
- sodium percarbonate
- temperature
- surfactant
- nonionic surfactant
- composition
- 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.)
- Expired - Fee Related
Links
- VTIIJXUACCWYHX-UHFFFAOYSA-L disodium;carboxylatooxy carbonate Chemical compound [Na+].[Na+].[O-]C(=O)OOC([O-])=O VTIIJXUACCWYHX-UHFFFAOYSA-L 0.000 title claims description 53
- 229940045872 sodium percarbonate Drugs 0.000 title claims description 53
- 239000000203 mixture Substances 0.000 title claims description 14
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 239000004094 surface-active agent Substances 0.000 claims description 21
- 239000002736 nonionic surfactant Substances 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 238000005507 spraying Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 5
- 238000005187 foaming Methods 0.000 claims description 2
- 230000005484 gravity Effects 0.000 description 13
- 239000000843 powder Substances 0.000 description 12
- 238000001035 drying Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical class C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 238000004061 bleaching Methods 0.000 description 2
- 239000002738 chelating agent Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- -1 ether compound Chemical class 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 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 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229920001983 poloxamer Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Detergent Compositions (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は界面活性剤を含有する流動性に優れた過炭酸ナ
トリウム組成物の製造法に関し、更に詳しくは、過炭酸
ナトリウムを80〜140℃の温度で加熱処理した後の該過
炭酸ナトリウムに液化させた非イオン界面活性剤の特定
量を特定温度下に散布、含有させることを特徴とする流
動性に優れた過炭酸ナトリウム組成物の製造法に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a method for producing a sodium percarbonate composition containing a surfactant and having excellent fluidity. More specifically, sodium percarbonate is added at 80 to 140 ° C. Of a sodium percarbonate composition excellent in fluidity, characterized by spraying and containing a specific amount of a liquefied nonionic surfactant in the sodium percarbonate after heat treatment at Concerning the law.
過炭酸ナトリウムは、過酸化水素と炭酸ナトリウムとを
反応させることによって製造され、広く漂白剤として利
用されているが、近年では、過炭酸ナトリウムと界面活
性剤とを混合し、漂白作用と洗浄作用とを兼併した組成
物が利用されつつある。この組成物の製造法としては、
従来、界面活性剤を粉末状のまま過炭酸ナトリウムと混
合するか、或いは液状又はペースト状の界面活性剤を一
般的な過炭酸ナトリウムの粒子表面に散布、含有させて
いる。Sodium percarbonate is produced by reacting hydrogen peroxide with sodium carbonate, and is widely used as a bleaching agent. In recent years, sodium percarbonate and a surfactant are mixed to obtain a bleaching action and a cleaning action. A composition that combines both and is being used. As a method for producing this composition,
Conventionally, a surfactant is mixed in powder form with sodium percarbonate, or a liquid or pasty surfactant is sprayed and contained on the surface of general sodium percarbonate particles.
過炭酸ナトリウムは粒子状等の本来的に流動性の良い状
態で生成させることが可能であるが、これに粉末状又は
液状の界面活性剤を、混合もしくは散布して含有せしめ
ると組成物の流動性が損なわれ、結果として最密比重と
見掛け比重の差が増大し、流動過程での振動等によっ
て、容器内の製品容積が大きく変化するといった不都合
や、或いは使用に際して組成物が容器からスムーズに取
り出しにくいという問題を生じ、従来の方法はこれらの
欠点を生ぜしめるものであった。Sodium percarbonate can be produced in a state of inherently good fluidity such as particles, but if powdered or liquid surfactant is mixed or sprinkled into it, the composition will flow. Property, resulting in an increase in the difference between the close-packed specific gravity and the apparent specific gravity, and due to vibration in the flow process, the product volume in the container changes significantly, or the composition smoothly flows from the container during use. The conventional method gives rise to these drawbacks by causing a problem of difficulty in taking out.
本発明の目的は、これらの欠点のない流動性に優れた界
面活性剤含有過炭酸ナトリウム組成物の製造方法を提供
することにある。An object of the present invention is to provide a method for producing a surfactant-containing sodium percarbonate composition which is free from these drawbacks and has excellent fluidity.
本発明者等は、前記問題点を解決するために鋭意研究の
結果、過炭酸ナトリウムを80〜140℃の温度で加熱処理
した後、さらに特定の温度条件下において液状とした非
イオン界面活性剤を散布、含有せしめることによって、
従来の欠点を持たない流動性に優れた過炭酸ナトリウム
組成物を得ることが出来ることを見出し、本発明を完成
した。The present inventors, as a result of earnest research to solve the above problems, after heat treatment of sodium percarbonate at a temperature of 80 ~ 140 ℃, a nonionic surfactant which is liquefied under specific temperature conditions By spraying and containing
The present invention has been completed by finding that it is possible to obtain a sodium percarbonate composition having excellent fluidity without the conventional drawbacks.
即ち、本発明は界面活性剤を含有する過炭酸ナトリウム
組成物を製造するに際し、過炭酸ナトリウムを80〜140
℃の温度で加熱処理して発泡性過炭酸ナトリウムを得、
該発泡性過炭酸ナトリウムに対し、0.5〜10重量％の液
状とした非イオン界面活性剤を10〜100℃の温度下に散
布、含有せしめることを特徴とする流動性に優れた過炭
酸ナトリウム組成物の製造法に関する。That is, the present invention, when producing a sodium percarbonate composition containing a surfactant, sodium percarbonate 80-140
Heat treatment at a temperature of ℃ to obtain effervescent sodium percarbonate,
A sodium percarbonate composition having excellent fluidity, characterized in that 0.5 to 10% by weight of a liquid nonionic surfactant is sprayed and contained at a temperature of 10 to 100 ° C with respect to the effervescent sodium percarbonate. It relates to a manufacturing method of a product.
本発明で用いる過炭酸ナトリウムは、炭酸ナトリウムと
過酸化水素とを水性媒体中で反応生成させ、これを濾過
し乾燥させる湿式製法、或いは乾燥気流中、炭酸ナトリ
ウム水溶液と過酸化水素とを噴霧し反応させ、そのまま
乾燥する乾式製法などの一般的製法で得られたものを使
用し得る。これらの方法で得られる過炭酸ナトリウムに
は種々の目的から反応時もしくは、濾過後もしくは、乾
燥後にケイ酸塩、有機キレート剤、リン酸塩、ポリアク
リル酸塩、マグネシウム塩等が添加され過炭酸ナトリウ
ム結晶粒子中に含有されてもよい。The sodium percarbonate used in the present invention is produced by reacting sodium carbonate and hydrogen peroxide in an aqueous medium and then filtering and drying this, or by spraying an aqueous sodium carbonate solution and hydrogen peroxide in a dry air stream. It is possible to use those obtained by a general production method such as a dry production method of reacting and drying as it is. For various purposes, sodium percarbonate obtained by these methods is added with silicates, organic chelating agents, phosphates, polyacrylic acid salts, magnesium salts, etc. during reaction or after filtration or after drying. It may be contained in sodium crystal particles.
本発明に於いて、過炭酸ナトリウムは乾燥品を、或いは
湿潤過炭酸ナトリウムを乾燥と同時に80〜140℃の温度
に昇温加熱するが、この際の温度は80〜140℃、好まし
くは110〜130℃の品温で処理するのが望ましく、温度が
低すぎる場合には処理に長時間を要し、高すぎる場合は
過炭酸ナトリウムの分解が激しく起こり、その分割熱に
よって温度の制御が困難となる。In the present invention, sodium percarbonate is a dried product, or wet sodium percarbonate is heated to a temperature of 80 to 140 ° C. at the same time as drying, and the temperature at this time is 80 to 140 ° C., preferably 110 to 140 ° C. It is desirable to treat at a product temperature of 130 ° C. If the temperature is too low, it takes a long time to treat it, and if it is too high, the decomposition of sodium percarbonate occurs violently, and it is difficult to control the temperature due to the heat of division. Become.
加熱処理に要する時間は、処理温度等との関係に於いて
特に限定することが出来ないが、110〜130℃で５〜40分
で実施するのが好ましい。加熱処理が終了した過炭酸ナ
トリウムは、無効な分解を抑えるために適正な温度まで
強制的に冷却される。The time required for the heat treatment cannot be particularly limited in relation to the treatment temperature and the like, but it is preferably carried out at 110 to 130 ° C. for 5 to 40 minutes. The heat-treated sodium percarbonate is forcibly cooled to an appropriate temperature in order to suppress ineffective decomposition.
過炭酸ナトリウムは、以上の処理によって物質特性を変
化させ、又水に溶解させた際に発泡化するようになる。Sodium percarbonate changes the material properties by the above treatment, and becomes foamed when dissolved in water.
これらの物性を付与された過炭酸ナトリウムには、次い
で非イオン界面活性剤が散布される。非イオン界面活性
剤の散布は、均一な分散ができ、過炭酸ナトリウムの粒
子を必要以上に崩壊させない装置であれば、特に限定さ
れるものではない。リボン型、パドル型等の一般的な混
合による機械攪拌を行うか、或いは容器底部の多孔板か
らの噴出空気による流動化型で行えばよい。本発明に於
いて非イオン界面活性剤の添加は、攪拌されている過炭
酸ナトリウムにスプレーされることが望ましい。The sodium percarbonate having these physical properties is then sprayed with a nonionic surfactant. The dispersion of the nonionic surfactant is not particularly limited as long as it is a device that can be uniformly dispersed and does not disintegrate the particles of sodium percarbonate more than necessary. Mechanical stirring may be performed by general mixing such as ribbon type and paddle type, or fluidized type may be performed by air blown from a perforated plate at the bottom of the container. In the present invention, the addition of the nonionic surfactant is preferably sprayed on the stirred sodium percarbonate.
本発明に用いる非イオン界面活性剤としては、C8〜C22
の直鎖又は分枝鎖をもつ高級アルコールのエチレンオキ
サイドの付加物（付加モル数５以上）、C8〜C22のアル
キル基を持つアルキルフェノールのエチレンオキサイド
付加物（付加モル数５以上）等が挙げられ、或いはこれ
ら非イオン界面活性剤とC1〜C22の直鎖又は、分枝鎖を
もつアルコールとのエーテル化合物、或いはエチレンオ
キサイドとプロピレンオキサイドのブロック共重合体か
らなるプルロニック型の界面活性剤も使用することがで
きる。Examples of the nonionic surfactant used in the present invention include C 8 to C 22.
Of higher alcohols having a linear or branched chain of ethylene oxide adducts (more than 5 moles added), ethylene oxide adducts of alkylphenols having a C 8 to C 22 alkyl group (more than 5 moles added), etc. Or a pluronic type surface active agent composed of an ether compound of these nonionic surfactants and an alcohol having a C 1 to C 22 linear or branched chain, or a block copolymer of ethylene oxide and propylene oxide. Agents can also be used.
非イオン界面活性剤の性状は、粉体等の固体から液状体
まで温度により異なり特に限定できないが、散布するた
めに液状化するには水などの溶媒により溶解させる方
法、或いは温度を融点（流動点）以上に上げて液状化す
る方法があるが、いずれかに限定されるものではない。
水などの溶媒を使用した場合、散布される過炭酸ナトリ
ウムが溶媒により表面変化する場合が考えられること、
或いは次の工程で溶媒を蒸発させるための再乾燥が必要
となるため、溶媒の使用はできるだけ少量の方が望まし
い。The properties of nonionic surfactants vary from solids such as powders to liquids depending on the temperature, and are not particularly limited, but in order to liquefy them for spraying, they are dissolved in a solvent such as water, or the temperature is the melting point (fluidity). Point) There is a method of liquefying by raising the temperature above, but the method is not limited to either one.
If a solvent such as water is used, the surface of the sodium percarbonate sprayed may change depending on the solvent.
Alternatively, it is necessary to re-dry the solvent in the next step in order to evaporate the solvent. Therefore, it is desirable to use the solvent in the smallest possible amount.
非イオン界面活性剤は一種類のみで、或いは複数を組み
合わせて使用することができる。更に、本発明の効果を
阻害しない範囲に於いて、陰イオン界面活性剤、陽イオ
ン界面活性剤、各種キレート剤および各種添加物と併用
することも可能である。The nonionic surfactant may be used alone or in combination of two or more. Further, it may be used in combination with an anionic surfactant, a cationic surfactant, various chelating agents and various additives as long as the effects of the present invention are not impaired.
非イオン界面活性剤の散布量は、発泡性過炭酸ナトリウ
ムに対して0.5〜10重量％、好ましくは１〜５重量％で
ある。散布量が0.5重量％未満では本発明の目的とする
該組成物としての十分な洗浄作用を得ることができず、
また10重量％を越えると、本発明の目的である流動性の
改善が困難となる。The amount of the nonionic surfactant applied is 0.5 to 10% by weight, preferably 1 to 5% by weight, based on the foaming sodium percarbonate. If the spray amount is less than 0.5% by weight, a sufficient cleaning action as the composition of the present invention cannot be obtained,
On the other hand, if it exceeds 10% by weight, it becomes difficult to improve the fluidity which is the object of the present invention.
過炭酸ナトリウムの加熱処理条件に於いて、温度が低く
加熱処理時間が短いものは、界面活性剤を多く含有した
場合、過炭酸ナトリウムの流動性が改善されにくく、温
度が高く加熱処理時間が長いものは、界面活性剤が多く
含有しても流動性改善の効果が期待できる傾向にある。Regarding the heat treatment conditions of sodium percarbonate, those having a low temperature and a short heat treatment time have a high temperature and a long heat treatment time, when the surfactant is contained in a large amount, the fluidity of sodium percarbonate is difficult to improve. The product tends to be expected to have the effect of improving the fluidity even if it contains a large amount of the surfactant.
非イオン界面活性剤散布時の過炭酸ナトリウムの温度
は、10〜100℃、好ましくは20〜40℃である。温度が10
℃未満では、散布された非イオン界面活性剤の過炭酸ナ
トリウム表面での凝結が起きやすく、本発明の効果が出
にくく、100℃を越えると過炭酸ナトリウムの分解によ
る安全性が問題となり、好ましくない。なお、温度が40
〜100℃での散布後は、直ちに強制的に冷却し、40℃以
下とするのが好ましい。The temperature of sodium percarbonate at the time of spraying the nonionic surfactant is 10 to 100 ° C, preferably 20 to 40 ° C. Temperature is 10
If the temperature is lower than 0 ° C, coagulation of the sprayed nonionic surfactant on the surface of sodium percarbonate is likely to occur, and the effect of the present invention is difficult to be obtained, and if the temperature exceeds 100 ° C, safety due to decomposition of sodium percarbonate becomes a problem, which is preferable. Absent. The temperature is 40
After spraying at -100 ° C, it is preferable to forcibly and immediately cool to 40 ° C or lower.
加熱処理された過炭酸ナトリウムに非イオン界面活性剤
を散布した後は、粉末物性の安定化のため少なくとも１
時間、好ましくは３〜５時間を10℃以上の温度で、好ま
しくは20〜40℃の温度下で保存することが好ましい。After spraying the heat-treated sodium percarbonate with the nonionic surfactant, at least 1% is required to stabilize the powder properties.
It is preferable to store for a time, preferably 3 to 5 hours, at a temperature of 10 ° C or higher, preferably at a temperature of 20 to 40 ° C.
通常乾燥の過炭酸ナトリウムに非イオン界面活性剤を散
布すると、粉末の流動性が低下（安息角の増大）し、そ
の結果、見掛比重が測定上小さい値となるが、最密比重
の変動は見掛比重の変動に比べて少ないため、最密比重
と見掛比重の差は大きくなり粉末物性は低下する。When nonionic surfactant is sprinkled on dry sodium percarbonate, the fluidity of the powder decreases (the angle of repose increases), and the apparent specific gravity becomes a small value in the measurement, but the fluctuation of the close-packed specific gravity Is smaller than the change in apparent specific gravity, the difference between the closest packed specific gravity and the apparent specific gravity becomes large, and the physical properties of the powder deteriorate.
しかしながら、本発明の製造法のように、通常乾燥より
更に加熱処理された過炭酸ナトリウムを用いる場合は、
非イオン界面活性剤を散布しても界面活性剤の影響を見
掛け上受けていない程度まで粉末物性が改善される。However, as in the production method of the present invention, when using sodium percarbonate that has been further heat treated than normal drying,
Even if the nonionic surfactant is sprayed, the physical properties of the powder are improved to the extent that the effect of the surfactant is not apparently affected.
この現象の作用機構については、まだ明らかではない。
しかし、この現象をさらに詳しく調べると、本発明品も
界面活性剤散布直後は通常乾燥品とほぼ同様な粉末物性
を示すが、時間経過と共に見掛比重が界面活性剤散布以
前の値へと変動し、この傾向は数時間のうちに安定化す
ることがわかった。The mechanism of action of this phenomenon is not yet clear.
However, when this phenomenon was investigated in more detail, the product of the present invention also showed substantially the same powder physical properties as the normally dried product immediately after the surfactant was applied, but the apparent specific gravity changed to the value before the application of the surfactant over time. However, this tendency was found to stabilize within a few hours.
これらの現象を総合すると、通常乾燥品に界面活性剤が
散布されると過炭酸ナトリウムの表面挙動および粉末特
性は、界面活性剤により大きく変化を受けるが、本発明
については過炭酸ナトリウムが加熱処理によって表面活
性を有し、表面散布された界面活性剤成分が表面挙動を
変えるには至らない程度まで内部浸透あるいは、分散等
何らかの作用を受けたものと推測される。Summarizing these phenomena, the surface behavior and powder properties of sodium percarbonate are usually significantly changed by the surfactant when the surfactant is sprayed on the dried product. It is presumed that the surfactant component having surface activity was subjected to some action such as internal penetration or dispersion to the extent that the surface-sprayed surfactant component did not change the surface behavior.
通常乾燥された過炭酸ナトリウムに界面活性剤が散布さ
れた場合は、必然的に粉末特性が変化するが、この現象
が本質的なものであると認識され、添加剤としての界面
活性剤の効果も大であることから、粉末特性に問題はあ
りつつも多くの漂白洗浄剤はこの方式が採用されてい
る。The powder properties inevitably change when surfactants are sprinkled on dried sodium percarbonate, but this phenomenon is recognized as essential and the effect of surfactants as additives Therefore, many bleaching detergents use this method, although there are problems with the powder characteristics.
本発明により、過炭酸ナトリウムを通常乾燥よりさらに
加熱処理した後に界面活性剤を散布することで上記欠点
を解消させたことは、設備の設計、生産管理および充填
効率等に代表される工業的な意義は非常に大きいものが
ある。According to the present invention, the above-mentioned drawbacks are eliminated by spraying a surfactant after heat treatment of sodium percarbonate more than usual drying, that is, industrial design represented by equipment design, production control and filling efficiency. The significance is very significant.
以下に本発明の実施例をもって説明するが、本発明はこ
れらに制限されることなく実施することができる。Examples of the present invention will be described below, but the present invention can be carried out without being limited thereto.
〔原料過炭酸ナトリウム（通常乾燥品）〕 過炭酸ナトリウム湿製品（含水率11重量％）を温度60
℃、時間30分乾燥した後、30℃まで冷却し、水分0.3重
量％の過炭酸ナトリウムを得た。[Raw material sodium percarbonate (normally dry product)] Sodium percarbonate wet product (water content 11% by weight) at temperature 60
After drying at 30 ° C for 30 minutes, it was cooled to 30 ° C to obtain sodium percarbonate having a water content of 0.3% by weight.
比較例１〜３ 上記の過炭酸ナトリウムにソフタノール120〔日本触媒
（株）非イオン界面活性剤、直鎖型C12〜14セカンダリ
ーアルコールの酸化エチレン12モル付加物〕を所定量散
布した。得られたサンプルについて粉末特性を調べた。
結果は表１に示した。Comparative Examples 1 to 3 Softanol 120 [Nippon Shokubai Co., Ltd. nonionic surfactant, linear C 12-14 secondary alcohol ethylene oxide 12 mol adduct] was sprayed on the above sodium percarbonate in a predetermined amount. The powder characteristics of the obtained sample were examined.
The results are shown in Table 1.
実施例１〜７ 上記の過炭酸ナトリウムの冷却前の状態からさらに加熱
温度を上げ、所定温度で所定時間加熱処理を行い温度30
℃まで冷却した後、ソフタノール120を所定量散布し、
当該温度で５時間保持することによって得られたサンプ
ルの粉末特性を調べた。結果は表１に示した。Examples 1 to 7 The heating temperature was further raised from the state before cooling the sodium percarbonate, and heat treatment was performed at a predetermined temperature for a predetermined time to obtain a temperature of 30.
After cooling to ℃, spray a predetermined amount of Softanol 120,
The powder property of the sample obtained by holding at the said temperature for 5 hours was investigated. The results are shown in Table 1.
測定方法 ＊１ 安息角測定方法：三輪式円筒回転法による安息角
測定器〔筒井理化学器械（株）〕を用い、測定瓶（500m
l）に試料250mlを入れセットし、３分間回転後角度を測
定する。Measuring method * 1 Measuring the angle of repose: Using a revolving angle measuring device [Tsutsui Rikagaku Kikai Co., Ltd.] based on the three-wheel cylindrical rotation method, a measuring bottle (500 m
Put 250 ml of sample in l) and set, rotate for 3 minutes and measure the angle.
＊２ 見掛け比重測定方法:JIS K3362-1978,6.2見掛け
密度測定法による。* 2 Apparent specific gravity measuring method: JIS K3362-1978, 6.2 Apparent density measuring method.
＊３ 最密比重測定方法：電磁振動式カサ密度測定器
〔筒井理化学器械（株）型式VBD-080〕を用い、試料カ
ップ（100ml）と接続用円筒枠を組み合わせた試料をセ
ットし、４分間振動後接続用円筒枠を取り外し試料上部
をヘラでスリ切り計量する（Wg）。次式より最密比重を
算出する。* 3 Closest specific gravity measurement method: Using an electromagnetic vibration type bulk density measuring instrument [Tsutsui Rikagaku Kikai Co., Ltd. model VBD-080], set a sample that combines a sample cup (100 ml) and a connecting cylinder frame, and set for 4 minutes. After vibration, remove the cylindrical frame for connection and cut the upper part of the sample with a spatula and weigh it (Wg). The closest density is calculated from the following formula.
＊４ B/A値：容器充填容積の変化を示す値で１に近い
程容積の変化が少ないことを示す。なお、Ｂは最密比
重、Ａは見掛比重であり、ＢをＡで除した値である。 * 4 B / A value: A value that indicates the change in the filling volume of the container. The closer it is to 1, the smaller the change in volume. B is the closest specific gravity, A is the apparent specific gravity, and is a value obtained by dividing B by A.
＊５ B/A値の判定基準 ここで、実施例３と比較例３とを比べた場合、両者とも
見掛比重が0.63であったが、B/A値が1.19と1.27であ
り、過炭酸ナトリウム500gであれば最密時に約42mlの容
積差が生じることになる。* 5 B / A value judgment criteria Here, when comparing Example 3 with Comparative Example 3, both had apparent specific gravities of 0.63, but B / A values were 1.19 and 1.27. A volume difference of 42 ml will occur.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 荒木 宏幸 栃木県芳賀郡市貝町赤羽2606―６ (56)参考文献 特開 昭50−70286（ＪＰ，Ａ) 特開 昭59−195505（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroyuki Araki 2606-6 Akabane, Kai-cho, Haga-gun, Tochigi Prefecture (56) References JP-A-50-70286 (JP, A) JP-A-59-195505 (JP, A) )
Claims (3)
成物を製造するに際し、過炭酸ナトリウムを80〜140℃
の温度で加熱処理して発泡性過炭酸ナトリウムを得、該
発泡性過炭酸ナトリウムに対し0.5〜10重量％の液状に
した非イオン界面活性剤を10〜100℃の温度下に散布、
含有せしめることを特徴とする流動性に優れた過炭酸ナ
トリウム組成物の製造法。1. When producing a sodium percarbonate composition containing a surfactant, sodium percarbonate is added at 80 to 140 ° C.
To obtain effervescent sodium percarbonate by heat treatment, and spraying 0.5 to 10% by weight of a liquid nonionic surfactant with respect to the effervescent sodium percarbonate at a temperature of 10 to 100 ° C.,
A method for producing a sodium percarbonate composition having excellent fluidity, which is characterized by containing it.
110〜130℃である特許請求の範囲第１項記載の製造法。2. The temperature for heat treatment of sodium percarbonate is
The method according to claim 1, which is 110 to 130 ° C.
性剤を散布した後、少なくとも１時間は10℃以上の温度
で保存する特許請求の範囲第１項記載の製造法。3. The method according to claim 1, wherein the foaming sodium percarbonate is sprayed with a nonionic surfactant and then stored at a temperature of 10 ° C. or higher for at least 1 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62286667A JPH0684518B2 (en) | 1987-11-13 | 1987-11-13 | Method for producing sodium percarbonate composition having excellent fluidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62286667A JPH0684518B2 (en) | 1987-11-13 | 1987-11-13 | Method for producing sodium percarbonate composition having excellent fluidity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01129100A JPH01129100A (en) | 1989-05-22 |
| JPH0684518B2 true JPH0684518B2 (en) | 1994-10-26 |
Family
ID=17707397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62286667A Expired - Fee Related JPH0684518B2 (en) | 1987-11-13 | 1987-11-13 | Method for producing sodium percarbonate composition having excellent fluidity |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0684518B2 (en) |
-
1987
- 1987-11-13 JP JP62286667A patent/JPH0684518B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01129100A (en) | 1989-05-22 |
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