JP2002212013A - Urea peroxide tablet and method for manufacturing the same - Google Patents
Urea peroxide tablet and method for manufacturing the sameInfo
- Publication number
- JP2002212013A JP2002212013A JP2001011747A JP2001011747A JP2002212013A JP 2002212013 A JP2002212013 A JP 2002212013A JP 2001011747 A JP2001011747 A JP 2001011747A JP 2001011747 A JP2001011747 A JP 2001011747A JP 2002212013 A JP2002212013 A JP 2002212013A
- Authority
- JP
- Japan
- Prior art keywords
- urea peroxide
- urea
- tablet
- peroxide
- binder
- 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.)
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- Agricultural Chemicals And Associated Chemicals (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Fertilizers (AREA)
Abstract
Description
【発明の詳細な説明】本発明は過酸化尿素に生分解性を
有するバインダ−を添加して加圧成型する過酸化尿素錠
剤の製造方法に関する。更に詳しくは、生分解性バイン
ダ−を用いて錠剤状にする事により、分解物質との接
触面積を低減化して安定度が改善され、取り扱いが容
易になり、徐放性が得られ、錠剤の強度が改善さ
れ、使用後に完全に分解する過酸化尿素錠剤に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a urea peroxide tablet which is formed by adding a biodegradable binder to urea peroxide and press-molding. More specifically, by forming a tablet using a biodegradable binder, the contact area with the decomposed substance is reduced, stability is improved, handling is facilitated, sustained release is obtained, and tablet release is achieved. It relates to urea peroxide tablets which have improved strength and which completely decompose after use.
【０００１】[0001]
【従来の技術】過酸化尿素は水に溶解して過酸化水素を
放出できる有機過酸化物であり、酸化剤、漂白剤などの
使用例がある。また、過酸化尿素中に含まれる窒素はタ
ンパク質の構成元素であり、過酸化水素は殺菌作用を有
す他、分解して酸素と水を生成して植物の生育に効果が
あることから土壌改良や肥料として使用されている例が
ある。過酸化尿素は、吸湿性が高く潮解性があり不安定
で、湿気などにより水分を吸収して過酸化水素を容易に
遊離する。また、遊離した過酸化水素が分解して内部で
水を生成して、過酸化尿素の分解が促進されてしまうな
ど、使用用途が限られていた。過酸化尿素の安定化方法
として、過酸化水素と尿素の反応完結前に燐酸塩類を添
加する方法（特公昭４５−３４３７号）や、反応系内に
石膏を添加する方法（特公昭６２−１２７８９号）、石
膏と硫酸マグネシウムや、無水塩化カルシウムを添加す
る方法（特公昭６２−２８０２９８号）がある。2. Description of the Related Art Urea peroxide is an organic peroxide capable of dissolving in water to release hydrogen peroxide, and examples of use include oxidizing agents and bleaching agents. In addition, nitrogen contained in urea peroxide is a constituent element of protein, and hydrogen peroxide has a bactericidal action and decomposes to produce oxygen and water, which is effective for plant growth, and thus soil improvement. And there are examples used as fertilizer. Urea peroxide has a high hygroscopicity, is deliquescent and is unstable, and absorbs moisture due to moisture or the like to easily release hydrogen peroxide. In addition, the use of use has been limited, for example, the liberated hydrogen peroxide is decomposed to generate water inside, thereby promoting the decomposition of urea peroxide. As a method for stabilizing urea peroxide, a method of adding phosphates before the completion of the reaction between hydrogen peroxide and urea (Japanese Patent Publication No. 45-3337) or a method of adding gypsum to the reaction system (Japanese Patent Publication No. 62-12789) No.), a method of adding gypsum, magnesium sulfate, and anhydrous calcium chloride (Japanese Patent Publication No. 62-280298).
【０００２】過酸化水素付加物にメタ硼酸を混ぜて安定
度を改善する特許(特公昭４９−６７６０号)に顆粒状や
錠剤状に成型しても安定度が損なわれないことが述べら
れているが成型する事により得られる安定度の向上効果
について詳細な説明、実施例がなく不明であった。A patent for improving stability by mixing metaboric acid with an adduct of hydrogen peroxide (Japanese Patent Publication No. 49-6760) states that the stability is not impaired even when molded into granules or tablets. However, there was no detailed description and examples of the effect of improving the stability obtained by molding, and it was unknown.
【０００３】その他、漂白組成物に通常添加される公知
のバインダ−として硫酸塩、珪酸塩、燐酸塩等の水溶性
無機バインダ−や、エチレンジアミン四酢酸塩、酒石
酸、クエン酸等の有機バインダ−、高分子バインダ−を
添加しても差し支えない技術の記載がみられる(特公昭
６２−２８０２９８号、特公昭６２−２５２５００
号)。しかし、バインダ−を用いて成型することなど詳
細な説明が無く、実施例についても生分解性の無いポリ
アクリル酸を添加した例しか見られてなかった。Other well-known binders usually added to the bleaching composition include water-soluble inorganic binders such as sulfates, silicates and phosphates, and organic binders such as ethylenediaminetetraacetate, tartaric acid and citric acid. There are descriptions of technologies that can be added to a polymer binder (Japanese Patent Publication No. 62-280298, Japanese Patent Publication No. 62-252500).
issue). However, there is no detailed description such as molding using a binder, and only examples in which polyacrylic acid having no biodegradability was added were found in Examples.
【０００４】農業に関して土壌改良剤や植物の生育促進
剤として肥料などを加える場合、その効果が長持ちする
こと、根焼けを防ぐことなど緩効性であることが望まし
いことが多い。肥料を成型して徐放性を与える技術、生
分解性の高分子を用いて被覆する技術について多くの研
究が行なわれているが過酸化尿素に関して述べられた技
術は見られていない。[0004] In the case of agriculture, when a fertilizer is added as a soil conditioner or a plant growth promoter, it is often desirable to have a long-lasting effect and a slow effect such as prevention of root burning. Much research has been conducted on a technique for forming a fertilizer to give sustained release and a technique for coating with a biodegradable polymer, but none of the techniques described for urea peroxide has been found.
【０００５】[0005]
【発明が解決しようとする問題】本発明は過酸化尿素の
安定度を改善、取り扱いを容易にする他、徐放性があり
使用時の効果を持続することが出来、且つ使用後に完全
に分解して地球環境への負荷を低減化することが出来る
過酸化尿素を提供しようとすることにある。SUMMARY OF THE INVENTION The present invention improves the stability of urea peroxide, facilitates handling, has a sustained release property, can maintain the effect of use, and completely decomposes after use. To provide urea peroxide which can reduce the load on the global environment.
【０００６】[0006]
【課題を解決するための手段】本発明者等はこれらの問
題を解決すべく鋭意検討を行った結果、過酸化尿素と生
分解性バインダーとからなる組成物を加圧成型して錠剤
状にする事により安定度を改善し、取り扱いが容易にな
り、錠剤の強度を向上させ、使用後に完全に分解する過
酸化尿素錠剤を得る事を見出して本発明を完成させた。The present inventors have [Means for Solving the Problems] As a result of intensive studies to solve these problems, the tablet form of the composition comprising urea peroxide and a biodegradable binder pressure molded to The present invention was found to improve the stability, facilitate handling, improve the strength of the tablet, and obtain a urea peroxide tablet that completely decomposes after use, thereby completing the present invention.
【０００７】[0007]
【発明の実施の形態】次に本発明の方法を具体的に説明
する本発明で対象となる過酸化尿素は、予め尿素と過
酸化水素を溶解した溶液から晶析により過酸化尿素を取
得し、未反応尿素と過酸化水素を母液として循環使用す
る晶析法、高濃度の過酸化水素水溶液に、尿素の結晶
を添加する溶融混練法や、尿素に過酸化水素を直接吹
きつけながら混練するスプレードライ法等の技術により
得ることが出来る。その具体的な合成方法は特に制限を
受けない。BEST MODE FOR CARRYING OUT THE INVENTION The urea peroxide which is the subject of the present invention, which specifically explains the method of the present invention, is obtained by crystallizing urea peroxide from a solution in which urea and hydrogen peroxide are previously dissolved. A crystallization method in which unreacted urea and hydrogen peroxide are circulated as a mother liquor, a melt-kneading method in which urea crystals are added to a high-concentration aqueous hydrogen peroxide solution, or kneading while directly spraying hydrogen peroxide on urea It can be obtained by a technique such as a spray drying method. The specific synthesis method is not particularly limited.
【０００８】本発明の生分解性バインダーは、生分解性
を持ち、バインダ−としての効果を発揮できればよい。
例として合成高分子であるポリ−ε−カプロラクトン、
ポリ乳酸、ポリグリコ−ルの様な脂肪族ポリエステル、
ポリエチレングリコ−ルやポリプロピレングリコ−ル、
ポリテトラメチレングリコ−ルなど可溶性のポリエ−テ
ル、ポリビニルアルコ−ル、ポリアミノ酸が挙げられ
る。天然高分子としては可溶性のキチンやキトサン、ア
ルギン酸が挙げられる。また、多糖類としてカ−ドラ
ン、ザンタン、プルラン、ガラクト酸などが挙げられ
る。[0008] The biodegradable binder of the present invention is not limited as long as it has biodegradability and can exhibit the effect as a binder.
Examples are synthetic polymers poly-ε-caprolactone,
Aliphatic polyesters such as polylactic acid and polyglycol,
Polyethylene glycol and polypropylene glycol,
Examples include soluble polyethers such as polytetramethylene glycol, polyvinyl alcohol, and polyamino acids. Natural polymers include soluble chitin, chitosan, and alginic acid. Examples of polysaccharides include cardran, xanthan, pullulan, and galactic acid.
【０００９】加圧成型は含水率０．５％以下の乾燥した
過酸化尿素及び生分解性バインダ−を用いる場合、含水
率１０％程度の湿紛の過酸化尿素及び溶液状の生分解性
バインダ−を用いる場合、そのどちらか一方が水分を含
んでいる場合、何れの場合においても可能である。しか
し、乾燥した結晶同士では成型後の過酸化尿素表面に凹
凸が生じてチッピングが起こり、徐放性、安定度の向上
が損なわれる。また、含水率が高いと乾燥時に内部に空
洞が出来、錠剤の強度、徐放性が著しく劣るため好まし
くない。この為、過酸化尿素及び生分解性バインダ−
は、それぞれ含水率１〜５％の状態で加圧成型すること
が好ましい。In the case of press molding, when dry urea peroxide having a water content of 0.5% or less and a biodegradable binder are used, wet powder urea peroxide having a water content of about 10% and a solution-type biodegradable binder are used. When-is used, when either one contains water, it is possible in any case. However, the dried crystals form irregularities on the surface of the urea peroxide after molding, causing chipping and impairing the sustained release properties and stability. On the other hand, when the water content is high, cavities are formed in the inside during drying, and the strength and sustained release of the tablet are remarkably poor, which is not preferable. Therefore, urea peroxide and biodegradable binder
Is preferably molded under pressure with a water content of 1 to 5%.
【００１０】加圧成型後の乾燥時における温度は３０℃
〜６０℃、好ましくは４０℃〜５０℃である。温度が低
すぎると乾燥に時間がかかる他、含まれる水分によって
過酸化水素が遊離して有効酸素量の低下を招くため好ま
しくない。また、温度が高すぎても過酸化尿素が分解し
て有効酸素濃度が低下する他、過酸化尿素中の尿素が分
解し、植物に有害であるビウレットの生成を促進してし
まう。The temperature during drying after pressure molding is 30 ° C.
To 60 ° C, preferably 40 ° C to 50 ° C. If the temperature is too low, it takes a long time for drying, and the contained water liberates hydrogen peroxide to cause a decrease in the available oxygen amount, which is not preferable. In addition, if the temperature is too high, urea peroxide is decomposed to lower the available oxygen concentration, and urea in urea peroxide is decomposed to promote the production of biuret, which is harmful to plants.
【００１１】生分解性バインダ−の添加量は、過酸化尿
素に対して１％〜２０％が好ましく、添加量が少なすぎ
ると錠剤の強度、徐放性の効果の低下を招く。一方、添
加量が多すぎると過酸化尿素としての効果が損なわれ
る。また、使用後の完全分解に比較的長時間を要するた
め好ましくない。The amount of the biodegradable binder to be added is preferably 1% to 20% with respect to urea peroxide. If the amount is too small, the strength of the tablet and the effect of sustained release are reduced. On the other hand, if the addition amount is too large, the effect as urea peroxide is impaired. Further, it is not preferable because a relatively long time is required for complete decomposition after use.
【００１２】加圧成型時に加える圧力は４０ｋｇf／ｃ
ｍ2以上が好ましく、４０ｋｇf／ｃｍ2以下では錠剤の
強度が著しく低下すると共に徐放性も低下する。The pressure applied during pressure molding is 40 kgf / c
m 2 or more is preferable, and if it is 40 kgf / cm 2 or less, the tablet strength is remarkably reduced and the sustained release property is also lowered.
【００１３】加圧成型は単発式打錠機、ロ−タリ−式打
錠機など打錠機による方法とロ−ル式圧縮造粒機による
ブリケットがあるが何れの方法を用いても構わない。There are two types of pressure molding: a method using a tableting machine such as a single-shot type tableting machine and a rotary type tableting machine, and a briquette using a roll-type compression granulator, but any method may be used. .
【００１４】本発明の錠剤状過酸化尿素を土壌中に散布
した場合、遊離する過酸化水素によって殺菌効果が得ら
れる。また、過酸化水素の分解によって生成する水、酸
素や過酸化水素の遊離によって生成する尿素は植物の生
育促進に効果をもたらす。その他、過酸化尿素に比べて
分解の遅いバインダ−は水によって土壌中に染込み、団
粒形成を促して通気性、根の伸長性を改善することがで
きる。[0014] When the tablet-like urea peroxide of the present invention is sprayed into the soil, a bactericidal effect is obtained by liberated hydrogen peroxide. In addition, water generated by decomposition of hydrogen peroxide, urea generated by liberation of oxygen and hydrogen peroxide have an effect on promoting plant growth. In addition, a binder that decomposes more slowly than urea peroxide infiltrates into soil with water, promotes the formation of aggregates, and can improve air permeability and root elongation.
【００１５】[0015]
【実施例】次に本発明の方法を実施例により具体的に説
明するが、これらに限定されるものではない。Next, the method of the present invention will be described in more detail with reference to Examples, but it should not be construed that the invention is limited thereto.
【００１６】実施例１晶析法によって得られた含水率１
５％のスラリ−状過酸化尿素を混練機に入れ、スラリ−
状過酸化尿素に対して分子量２０００のポリビニルアル
コ−ルを２％添加して、更に含水率が５％になるように
過酸化尿素の乾燥粉末を用いて調整した。調整後、過酸
化尿素の温度を２５℃に保ち、該過酸化尿素２０ｇを単
発式打錠機で２００ｋｇｆ／ｃｍ2の圧力を用いて成型
した。得られた直径４０ｍｍ、厚さ１０ｍｍのタブレッ
トを４０℃の真空乾燥機で4時間乾燥を行い、含水率
０．４％の過酸化尿素錠剤を得た。この錠剤をすり鉢で
すり潰して有効酸素量を１／１０Ｎ過マンガン酸カリウ
ム溶液を用いた滴定により測定した。次に、同様にして
錠剤に成型した過酸化尿素を恒温恒湿器に入れ、３０℃
／５０％ＲＨで１２０時間放置し有効酸素量の低下率を
求め、安定度とした。有効酸素量の低下率は以下に示す
式を用いて求めた。 (有効酸素低下率)＝｛(初期有効酸素)−(１２０時間後
有効酸素)｝／（初期有効酸素）×１００％ また、予め重量を測定した。過酸化尿素錠剤を直径２５
ｍｍの磁性ボ−ル１６個と一緒に磁性ポットに入れ、４
００ｒｐｍで１５分間磁性ポットを回転させて錠剤を粉
砕した。粉砕後１８メッシュの篩で篩い分けして篩を通
過した過酸化尿素の重量から微粉化率を粒子強度とし
た。微粉化率は以下に示す式を用いて調べた。結果を表
１に示した。 (微粉化率)＝(粉砕後１８メッシュ通過重量)／(タブレ
ット重量) ×１００ 次に、水を１０００ｇ入れた1Ｌビ−カ−に錠剤状過酸
化尿素をいれ７５ｒｐｍで撹拌し、完全に溶解するまで
の時間を徐放性として調べた。結果を表１に示した。ま
た、１Ｌビ−カ−に畑土を５００ｇ、錠剤状過酸化尿素
を入れて、１日４時間室温２５℃の温室に放置する他は
３０℃／４０％ＲＨの恒温恒湿機に入れた。２ヶ月経過
後の土中の錠剤状過酸化尿素の状態を調べた。結果を表
２に示した。Example 1 Water content 1 obtained by crystallization method
5% slurry urea peroxide is put into a kneader, and the slurry
2% of polyvinyl alcohol having a molecular weight of 2,000 was added to the urea peroxide in the form of urea, and the water content was adjusted to 5% using a dry powder of urea peroxide. After the adjustment, the temperature of urea peroxide was maintained at 25 ° C., and 20 g of the urea peroxide was molded using a single-shot tableting machine at a pressure of 200 kgf / cm 2 . The obtained tablets having a diameter of 40 mm and a thickness of 10 mm were dried with a vacuum dryer at 40 ° C. for 4 hours to obtain urea peroxide tablets having a water content of 0.4%. The tablets were crushed in a mortar and the effective oxygen content was measured by titration using a 1 / 10N potassium permanganate solution. Next, urea peroxide formed into tablets in the same manner was placed in a thermo-hygrostat at 30 ° C.
/ 50% RH for 120 hours, and the rate of decrease in the available oxygen amount was determined and defined as stability. The reduction rate of the available oxygen amount was determined using the following equation. (Effective oxygen decrease rate) = {(initial effective oxygen) − (effective oxygen after 120 hours)} / (initial effective oxygen) × 100% The weight was measured in advance. Urea peroxide tablets with diameter 25
Put it in a magnetic pot with 16 mm
The tablets were ground by rotating the magnetic pot at 00 rpm for 15 minutes. After pulverization, the particles were sieved with an 18-mesh sieve, and the degree of pulverization was defined as the particle strength from the weight of urea peroxide passed through the sieve. The pulverization rate was examined using the following equation. The results are shown in Table 1. (Pulverization ratio) = (Passage of 18 mesh after grinding) / (Tablet weight) × 100 Next, tablet-form urea peroxide is added to a 1 L beaker containing 1000 g of water, stirred at 75 rpm, and completely dissolved. The time to release was determined as sustained release. The results are shown in Table 1. Also, 500 g of field soil and tablet-like urea peroxide were placed in a 1-L beaker, and left in a greenhouse at room temperature of 25 ° C. for 4 hours a day, except that they were placed in a thermo-hygrostat at 30 ° C./40% RH. . After two months, the state of the tablet-like urea peroxide in the soil was examined. The results are shown in Table 2.
【００１７】実施例２成型圧力を４０ｋｇｆ／ｃｍ2に
した以外は実施例１と同様にして粒子強度、完全溶解時
間、安定度を調べた。Example 2 Particle strength, complete dissolution time and stability were examined in the same manner as in Example 1 except that the molding pressure was changed to 40 kgf / cm 2 .
【００１８】比較例１ バインダ−を添加しない以外は、実施例１と同様にして
行い、粒子強度、完全溶解時間を調べた。結果を表１に
示した。Comparative Example 1 The procedure of Example 1 was repeated except that no binder was added, and the particle strength and complete dissolution time were examined. The results are shown in Table 1.
【００１９】比較例２ 圧縮成型しないこと以外は実施例１と同様にして安定
度、完全溶解時間を調べた。結果を表１に示した。Comparative Example 2 The stability and complete dissolution time were examined in the same manner as in Example 1 except that compression molding was not performed. The results are shown in Table 1.
【００２０】比較例３ バインダ−として生分解性をもたないポリアクリル酸を
使用した以外は、実施例１と同様にして、畑土に入れた
時の状態の変化を調べた。結果を表２に示した。Comparative Example 3 A change in the state when put into field soil was examined in the same manner as in Example 1 except that polyacrylic acid having no biodegradability was used as a binder. The results are shown in Table 2.
【００２１】[0021]
【表１】 [Table 1]
【００２２】[0022]
【表２】 [Table 2]
【００２３】[0023]
【発明の効果】過酸化尿素に生分解性を有するバインダ
−を添加して過酸化尿素錠剤を製造する事により、安定
度、強度の改善でき、取り扱いも容易になる。また徐放
性が得られ使用時の効果が持続する他、使用後に完全に
分解することができる。By adding a biodegradable binder to urea peroxide to produce a urea peroxide tablet, stability and strength can be improved and handling can be facilitated. In addition, sustained release properties are obtained, the effect at the time of use is maintained, and the product can be completely decomposed after use.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０５Ｇ 3/00 １０１ Ｃ０５Ｇ 3/00 １０１ 3/02 3/02 Ｃ０９Ｋ 17/14 Ｃ０９Ｋ 17/14 Ｈ 17/18 17/18 Ｈ // Ｃ０９Ｋ 101:00 101:00 (72)発明者 西村 喜男 三重県四日市市日永東２丁目４番16号 三 菱瓦斯化学株式会社四日市工場内 Ｆターム(参考） 4H011 AA01 AA02 AB03 BA01 BB18 BC19 DA03 DC11 DF02 DG06 DH02 DH29 4H026 AA07 AA09 AA10 AB02 AB04 4H061 AA01 AA02 AA10 BB16 DD01 EE35 EE37 FF08 FF15 HH03 HH44 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification code FI Theme coat ゛ (Reference) C05G 3/00 101 C05G 3/00 101 3/02 3/02 C09K 17/14 C09K 17/14 H 17 / 18 17/18 H // C09K 101: 00 101: 00 (72) Inventor Yoshio Nishimura 2-4-16 Hinagahigashi, Yokkaichi City, Mie Prefecture F term (reference) 4H011 AA01 AA02 AB03 BA01 BB18 BC19 DA03 DC11 DF02 DG06 DH02 DH29 4H026 AA07 AA09 AA10 AB02 AB04 4H061 AA01 AA02 AA10 BB16 DD01 EE35 EE37 FF08 FF15 HH03 HH44
Claims (4)
る過酸化尿素錠剤。1. A urea peroxide tablet comprising urea peroxide and a biodegradable binder.
加圧成型することを特徴とする過酸化尿素錠剤の製造方
法。2. A method for producing a urea peroxide tablet, comprising adding a biodegradable binder to urea peroxide and press-molding.
率が、それぞれ１〜５％であることを特徴とする請求項
２記載の過酸化尿素錠剤の製造方法。3. The method for producing a urea peroxide tablet according to claim 2, wherein the water content of each of the urea peroxide and the biodegradable binder is 1 to 5%.
あることを特徴とする請求項２記載の過酸化尿素錠剤の
製造方法。 【０００１】4. The method for producing a urea peroxide tablet according to claim 2, wherein the pressure during pressure molding is 40 kgf / cm 2 or more. [0001]
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| JP2001011747A JP2002212013A (en) | 2001-01-19 | 2001-01-19 | Urea peroxide tablet and method for manufacturing the same |
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| JP2001011747A JP2002212013A (en) | 2001-01-19 | 2001-01-19 | Urea peroxide tablet and method for manufacturing the same |
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| JP2002212013A true JP2002212013A (en) | 2002-07-31 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102219609A (en) * | 2011-05-17 | 2011-10-19 | 杨季冬 | Oxygen-increasing controlled-release fertilizer as well as preparation method and application thereof |
| CN103304310A (en) * | 2011-05-17 | 2013-09-18 | 杨季冬 | Oxygen-increasing slow-release fertilizer |
| CN103304347A (en) * | 2011-05-17 | 2013-09-18 | 杨季冬 | Slow-release fertilizer and preparation method thereof |
| CN103304346A (en) * | 2011-05-17 | 2013-09-18 | 杨季冬 | Fertilizer for indoor flowers and plants and preparation method thereof |
| JP2017516602A (en) * | 2014-03-18 | 2017-06-22 | クールサン ハイジーン ソリューションズ ピーティーワイ リミテッド | Storage device and method |
| US20210230037A1 (en) * | 2018-10-10 | 2021-07-29 | GlasPort Bio Limited | Treatments of organic waste |
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| JPS62502245A (en) * | 1985-03-25 | 1987-09-03 | ユニバ−シティ・オブ・バス | Disinfecting compositions and methods for contact lenses |
| JP2002212164A (en) * | 2001-01-19 | 2002-07-31 | Mitsubishi Gas Chem Co Inc | Method for producing granular urea peroxide |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS62502245A (en) * | 1985-03-25 | 1987-09-03 | ユニバ−シティ・オブ・バス | Disinfecting compositions and methods for contact lenses |
| JP2002212164A (en) * | 2001-01-19 | 2002-07-31 | Mitsubishi Gas Chem Co Inc | Method for producing granular urea peroxide |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102219609A (en) * | 2011-05-17 | 2011-10-19 | 杨季冬 | Oxygen-increasing controlled-release fertilizer as well as preparation method and application thereof |
| CN103304310A (en) * | 2011-05-17 | 2013-09-18 | 杨季冬 | Oxygen-increasing slow-release fertilizer |
| CN103304347A (en) * | 2011-05-17 | 2013-09-18 | 杨季冬 | Slow-release fertilizer and preparation method thereof |
| CN103304346A (en) * | 2011-05-17 | 2013-09-18 | 杨季冬 | Fertilizer for indoor flowers and plants and preparation method thereof |
| CN103304347B (en) * | 2011-05-17 | 2014-05-21 | 杨季冬 | Slow-release fertilizer and preparation method thereof |
| CN103304346B (en) * | 2011-05-17 | 2014-06-18 | 杨季冬 | Fertilizer for indoor flowers and plants and preparation method thereof |
| CN103304310B (en) * | 2011-05-17 | 2014-07-16 | 杨季冬 | Oxygen-increasing slow-release fertilizer |
| JP2017516602A (en) * | 2014-03-18 | 2017-06-22 | クールサン ハイジーン ソリューションズ ピーティーワイ リミテッド | Storage device and method |
| US10994914B2 (en) | 2014-03-18 | 2021-05-04 | Coolsan Hygiene Solutions Pty Ltd | Storage product and method |
| US20210230037A1 (en) * | 2018-10-10 | 2021-07-29 | GlasPort Bio Limited | Treatments of organic waste |
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