JPH048365B2 - - Google Patents
Info
- Publication number
- JPH048365B2 JPH048365B2 JP23765986A JP23765986A JPH048365B2 JP H048365 B2 JPH048365 B2 JP H048365B2 JP 23765986 A JP23765986 A JP 23765986A JP 23765986 A JP23765986 A JP 23765986A JP H048365 B2 JPH048365 B2 JP H048365B2
- Authority
- JP
- Japan
- Prior art keywords
- powder
- sulfamic acid
- caking
- formaldehyde resin
- sulfonic acid
- 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
Links
- 239000000843 powder Substances 0.000 claims description 68
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 claims description 51
- 229920000877 Melamine resin Polymers 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 4
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid group Chemical group S(N)(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 claims description 2
- 125000000542 sulfonic acid group Chemical group 0.000 description 18
- 239000002245 particle Substances 0.000 description 13
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 230000007774 longterm Effects 0.000 description 5
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical class CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 239000012736 aqueous medium Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000006482 condensation reaction Methods 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 description 1
- 229940063655 aluminum stearate Drugs 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- IVJISJACKSSFGE-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine Chemical class O=C.NC1=NC(N)=NC(N)=N1 IVJISJACKSSFGE-UHFFFAOYSA-N 0.000 description 1
- HANVTCGOAROXMV-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine;urea Chemical compound O=C.NC(N)=O.NC1=NC(N)=NC(N)=N1 HANVTCGOAROXMV-UHFFFAOYSA-N 0.000 description 1
- 235000019359 magnesium stearate Nutrition 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- FDDDEECHVMSUSB-UHFFFAOYSA-N sulfanilamide Chemical compound NC1=CC=C(S(N)(=O)=O)C=C1 FDDDEECHVMSUSB-UHFFFAOYSA-N 0.000 description 1
- 229940124530 sulfonamide Drugs 0.000 description 1
- 238000006277 sulfonation reaction Methods 0.000 description 1
Landscapes
- Detergent Compositions (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、スルフアミン酸粉末又はこれを主成
分として含有する粉末組成物の固結防止方法に関
する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for preventing caking of sulfamic acid powder or a powder composition containing the same as a main component.
スルフアミン酸は、洗浄剤、窒素酸化物除去
剤、水ガラスの硬化剤、その他の分野に広く用い
られている。スルフアミン酸は、通常、工業製品
としては、溶解速度の高い粉状品が望まれている
が、貯蔵が長期に及び場合には固結し易く、粉体
の流動性を失うことが多い。 Sulfamic acid is widely used in cleaning agents, nitrogen oxide removers, water glass hardening agents, and other fields. As an industrial product, sulfamic acid is generally desired to be in powder form with a high dissolution rate, but when stored for a long period of time, it tends to solidify and often loses its fluidity.
このような固結が起ると、使用前粉枠しないと
軽量が困難であつたり、また、水に溶解させるの
に長時間を要する等不都合を招くので、長期保存
によつても固結の起らないスルフアミン酸粉末の
提供が望まれている。 If such caking occurs, it will be difficult to reduce the weight without using a powder frame before use, and it will take a long time to dissolve in water, so long-term storage will also prevent caking. It would be desirable to provide a sulfamic acid powder that does not cause oxidation.
（従来の技術）
スルフアミン酸粉末の固結防止方法としては、
スルフアミン酸粉末に界面活性剤やステアリン酸
の塩類、シリカ微粉等を混入させる方法が知られ
ている。(Prior art) As a method for preventing caking of sulfamic acid powder,
A method is known in which a surfactant, stearic acid salts, fine silica powder, etc. are mixed into sulfamic acid powder.
（発明が解決しようとする問題点）
上記界面活性剤を混入させる方法では、得られ
たスルフアミン酸粉末を水に溶かして使用する際
泡立ちが起り易く、また、上記ステアリン酸の塩
類添加の場合には、スルフアミン酸とステアリン
酸塩とが反応を起し、その結果ステアリン酸が遊
離するので、スルフアミン酸粉末の溶解に用いた
水の表面にステアリン酸の油膜が生じ易い。更
に、上記シリカ微分を混入させる方法によると、
得られたスルフアミン酸粉末を取り扱う際に刺激
性発塵が起り易く、作業環境か害される。(Problems to be Solved by the Invention) In the above method of mixing a surfactant, foaming tends to occur when the obtained sulfamic acid powder is dissolved in water and used, and when the above stearic acid salts are added, Since sulfamic acid and stearate react and as a result stearic acid is liberated, an oil film of stearic acid is likely to form on the surface of the water used to dissolve the sulfamic acid powder. Furthermore, according to the method of mixing the silica derivative described above,
When handling the obtained sulfamic acid powder, irritating dust is likely to occur, which harms the working environment.
（問題点を解決するための手段）
ところが、意外なことに、スルホン酸基含有メ
ラミンホルムアルデヒド樹脂粉末をスルフアミン
酸に対して0.01％以上、好ましくは１％以下スル
フアミン酸粉末に加えて充分に混合すると、得ら
れたスルフアミン酸粉末は長期保存後にも固結が
起らず、上記従来法における問題も起らない。(Means for Solving the Problem) However, surprisingly, when sulfonic acid group-containing melamine formaldehyde resin powder is added to sulfamic acid powder in an amount of 0.01% or more, preferably 1% or less based on sulfamic acid, and mixed thoroughly, The obtained sulfamic acid powder does not cause caking even after long-term storage, and the above-mentioned problems in the conventional method do not occur.
本発明の対象とするスルフアミン酸粉末は、粒
子径に特に制限を有するものではないが、通常の
粉状工業製品であつて、平均粒径150ミクロン程
度以下のものに本発明の方法は適する。また、ス
ルフアミン酸粉末に少量の添加剤、例えば、微粉
シリカ流動化剤等を加えたスルフアミン酸を主成
分とする粉末組成物等にも適用することができ
る。 The sulfamic acid powder that is the object of the present invention has no particular restriction on particle size, but the method of the present invention is suitable for ordinary powdery industrial products that have an average particle size of about 150 microns or less. It can also be applied to powder compositions containing sulfamic acid as a main component, which are obtained by adding a small amount of additives, such as a finely divided silica fluidizing agent, to sulfamic acid powder.
本発明の方法に用いられるスルホン酸基含有メ
ラミンホルムアルデヒド樹脂粉末は、公知の物質
であつて、セメント減水剤としてもよく知られ、
公知の方法により容易に製造される。例えば、水
性媒体中、メラミンとホルマリンとを反応させた
後、更に重亜硫酸ソーダ又はスルフアミン酸を加
えてスルホン化と縮合反応を起させることによ
り、或いは、水性媒体中、メラミンとホルマリン
と重亜硫酸ソーダ又はスルフアミン酸とを加えて
反応させた後、更に縮合反応をさせることにより
得られるスルホン化メラミンホルムアルデヒド樹
脂水溶液を、スプレードライヤー等乾燥機により
乾燥することにより容易に得られる。また、市販
品としても入手し得る。この粉末は、含水率が低
い程よいが、10重量％以下の水を含んでいてもよ
い。また、この粉末の粒径としては、通常、60〜
200ミクロン程度でよい。また、メラミンの一部
を尿素で置換して得られるスルホン酸基含有メラ
ミン尿素ホルムアルデヒド樹脂も使用することが
できる。更に、保存中の着色が不都合でない場合
には、ナフタレンスルホン酸ソーダホルムアルデ
ヒド樹脂や、リグリニンスルホン酸又はその塩、
そのホルムアルデヒド樹脂等も使用することがで
きる。 The sulfonic acid group-containing melamine formaldehyde resin powder used in the method of the present invention is a known substance and is also well known as a cement water reducing agent.
It is easily manufactured by known methods. For example, by reacting melamine and formalin in an aqueous medium and then adding sodium bisulfite or sulfamic acid to cause a sulfonation and condensation reaction, or by reacting melamine, formalin, and sodium bisulfite in an aqueous medium. Alternatively, it can be easily obtained by drying an aqueous sulfonated melamine formaldehyde resin solution obtained by adding and reacting with sulfamic acid and then carrying out a condensation reaction using a drier such as a spray dryer. It is also available as a commercial product. This powder may contain up to 10% by weight of water, although the lower the water content, the better. In addition, the particle size of this powder is usually 60~
Approximately 200 microns is sufficient. Furthermore, a sulfonic acid group-containing melamine urea formaldehyde resin obtained by substituting a part of melamine with urea can also be used. Furthermore, if coloration during storage is not inconvenient, naphthalene sulfonic acid soda formaldehyde resin, ligrinine sulfonic acid or its salt,
Formaldehyde resins and the like can also be used.
本発明により、長期保存後も固結しないスルフ
アミン酸粉末は、上記スルフアミン酸粉末に上記
スルホン酸基含有メラミンホルムアルデヒド樹脂
粉末を、スルフアミン酸に対して0.01〜１％程度
加え、充分に混合することにより得られる。この
混合は、通常の混合機、例えば、Ｘ型混合機等を
用いることにより容易に行ない得る。混合時間
は、加えたスルホン酸基含有メラミンホルムアル
デヒド樹脂粉末による固結防止効果が発現するに
充分な時間でよいが、通常の混合機によるとき
は、５〜60分程度でよい。また、上記混合機によ
る混合の他、粉砕機を用いることもできる。粉砕
機による混合は、粒度の粗いスルフアミン酸結晶
粒を粉砕して粉末スルフアミンとする場合に、こ
の粉砕特にスルホン酸基含有メラミンホルムアル
デヒド樹脂粉末を加えることによつて、粉砕と同
時に行ない得る。 According to the present invention, the sulfamic acid powder that does not solidify even after long-term storage can be obtained by adding the sulfonic acid group-containing melamine formaldehyde resin powder to the sulfamic acid powder in an amount of about 0.01 to 1% based on the sulfamic acid and thoroughly mixing the powder. can get. This mixing can be easily carried out using a conventional mixer such as an X-type mixer. The mixing time may be a time sufficient for the added sulfonic acid group-containing melamine formaldehyde resin powder to exhibit an anti-caking effect, but when using a normal mixer, it may be about 5 to 60 minutes. In addition to mixing using the mixer described above, a pulverizer can also be used. Mixing using a pulverizer can be carried out simultaneously with pulverization when coarse sulfamic acid crystal grains are pulverized to obtain powdered sulfamine, especially by adding sulfonic acid group-containing melamine formaldehyde resin powder.
（作用）
スルフアミン酸は、スルホン基を有する化合物
であるから、その結晶粒表面のスルホン酸基との
高い親和性により、スルホン酸基含有メラミンホ
ルムアルデヒド樹脂粉末をスルフアミン酸粒子の
表面に保持させ易く作用し、長期保存後も、スル
フアミン酸粒子同志の表面固着を起させ難くして
いるものと思われる。(Function) Since sulfamic acid is a compound having a sulfonic acid group, its high affinity with the sulfonic acid group on the surface of the crystal grains makes it easy to hold the sulfonic acid group-containing melamine formaldehyde resin powder on the surface of the sulfamic acid particles. However, it seems that this makes it difficult for the sulfamic acid particles to stick to each other on the surface even after long-term storage.
スルフアミン酸粉末に加えられるスルホン酸基
含有メラミンホルムアルデヒド樹脂粉末の量が、
スルフアミン酸に対し0.01重量％以下では、固結
防止が殆ど達成されない。この添加は増える程固
結防止に有効であるが、スルフアミン酸に対し１
重量％以上に高めても、さ程その効果の向上がな
く、スルフアミン酸の純度低下を招来するから好
ましくない。 The amount of sulfonic acid group-containing melamine formaldehyde resin powder added to sulfamic acid powder is
If the amount is less than 0.01% by weight based on the sulfamic acid, hardly any caking prevention will be achieved. The more this addition is, the more effective it is in preventing caking, but for sulfamic acid,
Even if the content is increased by more than % by weight, the effect will not be significantly improved and the purity of the sulfamic acid will decrease, which is not preferable.
また、スルフアミン酸粉末とスルホン酸基含有
メラミンホルムアルデヒド樹脂粉末との充分な混
合によつて、スルフアミン酸粒子の表面における
スルホン酸基含有メラミンホルムアルデヒド樹脂
粉末の充分な保持が達成されると考えられる。 Further, it is considered that by sufficiently mixing the sulfamic acid powder and the sulfonic acid group-containing melamine formaldehyde resin powder, sufficient retention of the sulfonic acid group-containing melamine formaldehyde resin powder on the surface of the sulfamic acid particles is achieved.
実施例 １
90％が50〜200ミクロンであつて、平均粒径120
ミクロンであるスルフアミン酸粉末400Kgと、平
均粒径80ミクロンの市販スルホン酸基含有メラミ
ンホルムアルデヒド樹脂粉末400ｇをＶ型ミキサ
ーに投入し、常温で30分間混合した。得られた粉
末25Kgを紙袋に充填し、40℃、相対湿度85〜90％
の室内に２トンの荷重下15日間放置した。次い
で、この荷重を除き、紙袋を切り開いてスルフア
ミン酸粉末の固結有無をしらべたところ、固結は
全く認められなかつた。Example 1 90% is 50-200 microns, average particle size 120
400 kg of sulfamic acid powder having an average particle size of 80 microns and 400 g of a commercially available sulfonic acid group-containing melamine formaldehyde resin powder having an average particle size of 80 microns were placed in a V-type mixer and mixed for 30 minutes at room temperature. Fill 25Kg of the obtained powder into paper bags and store at 40℃ and relative humidity 85-90%.
It was left in a room under a load of 2 tons for 15 days. Next, this load was removed, the paper bag was cut open, and the presence or absence of caking of the sulfamic acid powder was examined, and no caking was observed.
比較例 １
スルホン酸基含有メラミンホルムアルデヒド樹
脂粉を加えない他は、実施例１と同様にしてスル
フアミン酸粉末の固結性をしらべたところ、当初
の粉末は塊に変り、その固結強度が30Kg／cm2であ
つた。また、この塊は、ハンマーにより打ち壊す
ことができたが、この作業を要すことは、簡便に
は使用し難いことを示すものである。Comparative Example 1 The caking property of the sulfamic acid powder was examined in the same manner as in Example 1 except that the sulfonic acid group-containing melamine formaldehyde resin powder was not added. The initial powder turned into lumps, and the caking strength was 30 kg. / cm2 . Furthermore, although this lump could be broken down with a hammer, the fact that this operation is required indicates that it is difficult to use it easily.
実施例 ２
粒径1.4mm以上が５〜10％、1.4〜0.3mmが80％、
0.3mm以下が10〜15％の粒度分布を有するスルフ
アミン酸の結晶粒からなる粉体25Kgと、実施例１
に用いたものと同じスルホン酸基含有メラミンホ
ルムアルデヒド樹脂粉末25Kgとを衝撃式粉砕機に
供給し、とり出したところ100メツシユパス95％
以上のスルフアミン酸粉末が得られた。この粉砕
されたスルフアミン酸粉末について実施例１と同
様にして固結有無のテストを行つたが、固結は全
く認められなかつた。Example 2 Particle size of 1.4 mm or more is 5-10%, 1.4-0.3 mm is 80%,
25 kg of powder consisting of sulfamic acid crystal grains having a particle size distribution of 10 to 15% of 0.3 mm or less and Example 1
When 25 kg of the same sulfonic acid group-containing melamine formaldehyde resin powder used in
The above sulfamic acid powder was obtained. The pulverized sulfamic acid powder was tested for caking in the same manner as in Example 1, but no caking was observed.
実施例 ３
実施例２と同様にして得られたスルフアミン酸
の粉砕された粉末25Kgを、厚さ100ミクロンのポ
リエチレン製袋に充填し、20〜35℃の室内に６ヶ
月間放置保存後、袋を切り開き固結有無をしらべ
たが、固結は全く認められなかつた。Example 3 25 kg of pulverized powder of sulfamic acid obtained in the same manner as in Example 2 was filled into a polyethylene bag with a thickness of 100 microns, and after being stored indoors at 20 to 35°C for 6 months, the bag was removed. I cut it open and checked for caking, but no caking was observed.
実施例 ４
実施例２に用いたものと同じスルフアミン酸の
結晶粒からなる粉体25Kgと、市販の微粉末シリカ
（塩野義製薬(株)製、商品名カープレツクスCS−
７）50ｇと、実施例１に用いたものと同じスルホ
ン酸基含有メラミンホルムアルデヒド樹脂粉末50
ｇとを用いて実施例２と同様にして粉砕されたス
ルフアミン酸の粉末を得た。次いで、実施例１と
同様にして固結有無のテストを行つたが、固結は
全く認められなかつた。更に、上記粉砕された粉
末について、デジタル粉塵計（柴田科学(株)製、モ
デルＰ−5H2型）を使用して、40cmの高さから粉
末を落したときの0.03ミクロン以上の粒径を有す
る粒子数をカウントさせたところ、200カウン
ト／５分であり、発塵は殆ど認められず、刺激臭
は感じられなかつた。Example 4 25 kg of powder consisting of the same sulfamic acid crystal grains as used in Example 2 and commercially available fine powder silica (manufactured by Shionogi & Co., Ltd., trade name Carplex CS-) were used.
7) 50 g and 50 g of the same sulfonic acid group-containing melamine formaldehyde resin powder used in Example 1
A pulverized sulfamic acid powder was obtained in the same manner as in Example 2 using Next, a test for the presence or absence of caking was conducted in the same manner as in Example 1, but no caking was observed. Furthermore, the above-mentioned pulverized powder has a particle size of 0.03 microns or more when the powder is dropped from a height of 40 cm using a digital dust meter (manufactured by Shibata Scientific Co., Ltd., model P-5H2). When the number of particles was counted, it was 200 counts/5 minutes, hardly any dust was observed, and no irritating odor was detected.
比較例 ２〜４
スルホン酸基含有メラミンホルムアルデヒド樹
脂粉末の代りに、ステアリン酸ソーダの粉末25ｇ
を用いた他は実施例２と同様にして比較例２の粉
砕されたスルフアミン酸粉末を得た。同様にして
ステアリン酸マグネシウムを用いて比較例３スル
フアミン酸粉末と、ステアリン酸アルミニウムを
用いて比較例４のスルフアミン酸粉末を得た。Comparative Examples 2 to 4 25g of sodium stearate powder instead of sulfonic acid group-containing melamine formaldehyde resin powder
A pulverized sulfamic acid powder of Comparative Example 2 was obtained in the same manner as in Example 2 except that . Similarly, sulfamic acid powder of Comparative Example 3 was obtained using magnesium stearate, and sulfamic acid powder of Comparative Example 4 was obtained using aluminum stearate.
次いで、これら比較例２〜４のスルフアミン酸
粉末について、実施例１と同様にして固結有無の
テストを行なつたところ、いずれも塊となり、そ
の固結強度は２〜４Kg／cm2であつた。また、これ
ら比較例の粉末について、更に実施例３と同様の
テストを行なつたが、やはり塊となり、その固結
強度は２〜３Kg／cm2であつた。 Next, when the sulfamic acid powders of Comparative Examples 2 to 4 were tested for caking in the same manner as in Example 1, they all formed into lumps, and the caking strength was 2 to 4 kg/cm 2 . Ta. Further, the powders of these comparative examples were further subjected to the same test as in Example 3, but they still formed into lumps, and the consolidation strength was 2 to 3 kg/cm 2 .
比較例 ４
スルホン酸基含有メラミンホルムアルデヒド樹
脂粉末を加えない他は、実施例４と同様にして粉
砕されたスルフアミン酸粉末を得た。次いでこの
粉砕について実施例１と同様のテストを行なつた
ところ、塊となり、その固結強度は40Kg／cm2であ
つた。更に、実施例４と同様にして発塵性をテス
トしたところ、4000〜8000カウント／５分であ
り、著しい発塵を認めると共に、刺激臭も感じら
れた。Comparative Example 4 A pulverized sulfamic acid powder was obtained in the same manner as in Example 4, except that the sulfonic acid group-containing melamine formaldehyde resin powder was not added. Next, when the same test as in Example 1 was conducted on this pulverization, it became a lump, and its consolidation strength was 40 Kg/cm 2 . Furthermore, when the dust generation property was tested in the same manner as in Example 4, the result was 4000 to 8000 counts/5 minutes, and not only significant dust generation was observed, but also an irritating odor was felt.
（発明の効果）
本発明によると、固結性のスルフアミン酸粉末
を極めて簡易に非固結性のスルフアミン酸粉末に
変性することができ、長期にわたる保存中に起る
固結を防止することができる。更に、この変性さ
れたスルフアミン酸粉末は、従来と同様に各種の
用途に用いられる。(Effects of the Invention) According to the present invention, caking sulfamic acid powder can be extremely easily modified into non-caking sulfamic acid powder, and caking that occurs during long-term storage can be prevented. can. Furthermore, this modified sulfamic acid powder can be used for various purposes as in the past.
Claims (1)
含有する粉末組成物に、スルフアミン酸に対し
0.01〜１重量％量のスルホン酸基含有メラミンホ
ルムアルデヒド樹脂粉末を加え、充分に混合する
ことを特徴とするスルフアミン酸粉末又はこれを
主成分として含有する粉末組成物の固結防止方
法。1 Addition of sulfamic acid to sulfamic acid powder or a powder composition containing this as a main component
A method for preventing caking of sulfamic acid powder or a powder composition containing sulfamic acid powder as a main component, the method comprising adding 0.01 to 1% by weight of sulfamic acid group-containing melamine formaldehyde resin powder and thoroughly mixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23765986A JPS6391359A (en) | 1986-10-06 | 1986-10-06 | Preventing method of solidification of sulfamic acid powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23765986A JPS6391359A (en) | 1986-10-06 | 1986-10-06 | Preventing method of solidification of sulfamic acid powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6391359A JPS6391359A (en) | 1988-04-22 |
| JPH048365B2 true JPH048365B2 (en) | 1992-02-14 |
Family
ID=17018600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23765986A Granted JPS6391359A (en) | 1986-10-06 | 1986-10-06 | Preventing method of solidification of sulfamic acid powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6391359A (en) |
-
1986
- 1986-10-06 JP JP23765986A patent/JPS6391359A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6391359A (en) | 1988-04-22 |
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