KR810000905B1 - Method of producing sodium percarbonate - Google Patents
Method of producing sodium percarbonate Download PDFInfo
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- KR810000905B1 KR810000905B1 KR1019800000447A KR800000447A KR810000905B1 KR 810000905 B1 KR810000905 B1 KR 810000905B1 KR 1019800000447 A KR1019800000447 A KR 1019800000447A KR 800000447 A KR800000447 A KR 800000447A KR 810000905 B1 KR810000905 B1 KR 810000905B1
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- sodium percarbonate
- sodium
- phenol
- stabilizer
- percarbonate
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
- C01B15/055—Peroxyhydrates; Peroxyacids or salts thereof
- C01B15/10—Peroxyhydrates; Peroxyacids or salts thereof containing carbon
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- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Detergent Compositions (AREA)
Abstract
Description
본 발명은 과탄산나트륨 제조시에 페놀을 안정제로 첨가하여 대단히 안정한 과탄산나트륨을 제조하는 방법에 관한 것이다.The present invention relates to a method for producing very stable sodium percarbonate by adding phenol as a stabilizer in the production of sodium percarbonate.
과탄산나트륨은 표백제 또는 산화제로서 알려져 있으며 일반적으로 탄산나트륨에 과산화수소를 작용시켜 제조되며, 대표적으로 Na1CO3·1.5H2O2로 표시되는 백색분말상의 물질이다.Sodium percarbonate is known as a bleach or oxidizing agent and is generally produced by applying hydrogen peroxide to sodium carbonate, and is typically a white powdery substance represented by Na 1 CO 3 · 1.5H 2 O 2 .
과탄산나트륨은 유사한 작용을 가진 과붕산나트륨에 비하여 물에 대한 용해성이 크고, 냉수에도 쉽게 용해하는 장점이 있다.Sodium percarbonate has the advantage of high solubility in water and easily dissolves in cold water compared to sodium perborate with a similar action.
그러나 과탄산나트륨은 보존 안정성이 대단히 나빠서 저정중에 과붕산나트륨에 비하여 더 빠르게 유효산소를 잃는 결점이 있다. 이런 경향은 열에 의하여 더욱 가속된다. 또 과탄산나트륨은 물에 대한 친화력이 강하기 때문에 미량의 습기에 의하여도 표면이 습기흡착상태가 되어 분해가 촉진된다.Sodium percarbonate, however, has a very poor preservation stability, which results in the loss of free radicals faster than sodium perborate during storage. This tendency is further accelerated by heat. In addition, since sodium percarbonate has a strong affinity for water, the surface becomes moisture-absorbed even by a small amount of moisture, so that decomposition is accelerated.
본 발명의 목적은 과탄산나트륨의 보존안정성을 개량하여 장기 보존에도 견디는 안정한 과탄산나트륨을 제공하려는데 있다.An object of the present invention is to provide a stable sodium percarbonate that withstands long term storage by improving the storage stability of sodium percarbonate.
본 발명자들은 예의 연구를 거듭한 결과 과탄산나트륨 제조시에 안정제로서 페놀을 첨가함으로써 과탄산나트륨의 안정성을 현저히 향상시킨다는 사실을 알게되었다.As a result of intensive studies, the present inventors have found that the addition of phenol as a stabilizer in the production of sodium percarbonate significantly improves the stability of sodium percarbonate.
페놀은 C6H5OH로 표시되는 백색결정성물질로, 산성을 띄우고 있으며 물에 용해되므로 사용시에는 수용액으로 하여 첨가사용할 수도 있다.Phenol is a white crystalline substance represented by C 6 H 5 OH. It is acidic and soluble in water, so it can be used as an aqueous solution.
본 발명의 방법은 과탄산나트륨 제조시에 페놀을 공지의 안정제(이하에서 설명)와 연합하여 탄산나트륨 분말에 혼합하거나 또는 페놀을 수용액으로 하여 과산화수소에 첨가한 후 탄산나트륨에 과산화수소를 작용시키고 젖은 반응생성물을 가열공기로 건조시키는 것이다. 이때 페놀의 사용량은 과탄산나트륨에 대하여 약 500-10,000 ppm이면 충분하다.In the process of the present invention, phenol is mixed with a known stabilizer (described below) in the preparation of sodium percarbonate or mixed with sodium carbonate powder or phenol is added as an aqueous solution to hydrogen peroxide, and then hydrogen peroxide is acted on sodium carbonate and the wet reaction product is heated. It is dried by air. In this case, the amount of phenol used is about 500-10,000 ppm with respect to sodium percarbonate.
앞서의 공지의 안정제로는 규산마그네슘, 황상마그네슘, 산화마그네슘등의 마그네슘화학물중 하나 또는 그 이상과 소디움 메타 실리케이트나 물유리(water glass)등의 규산염을 동시에 사용하는 것이 바람직하다.As a known stabilizer, one or more of magnesium chemicals such as magnesium silicate, magnesium sulfate, magnesium oxide, and silicate such as sodium metasilicate or water glass is preferably used.
본 발명에 따라서 상기의 공지안정제만을 첨가사용하여서는 얻을 수 없는 과탄산나트륨의 안정도를 페놀을 연합첨가함으로써 획기적으로 향상시킬 수 있는 것이다.According to the present invention, the stability of sodium percarbonate, which cannot be obtained by using only the above known stabilizer, can be remarkably improved by associating phenol.
한편 페놀은 물과 과산화수소에 용해하므로 과산화수소에 직접 첨가 용해시켜 사용할 수 있으며 따라서 건식법으로 탄산나트륨 분말에 과산화수소를 분무하여 반응시킬 때 과산화수소와 함께 페놀도 탄산나트륨에 균일하게 분무되므로 생성되는 과탄산나트륨에 균일한 안정도를 부여할 수 있는 장점도 지니고 있다.On the other hand, phenol is dissolved in water and hydrogen peroxide, so it can be added and dissolved directly in hydrogen peroxide. Therefore, when the reaction is carried out by spraying hydrogen peroxide on sodium carbonate powder by dry method, phenol is also uniformly sprayed on sodium carbonate together with hydrogen peroxide. It also has the advantage of being granted.
[실시예]EXAMPLE
폴리에틸렌 재료로 만든 비-커형의 반응기에 탄산나트륨분말 119g(탄산나트륨 함유량 89.0%)을 담고, 50% 과산화수소 102g을 반분하여 한쪽에 공지의 안정제인 규산나트륨을 1g을, 또 한쪽에는 황산마그네슘과 페놀을 각각 1g씩을 첨가한 것을 약 30분간에 걸쳐서 동시에 탄산나트륨에 적하교반하여 반응시킨다. 젖은 생성물을 50℃의 가열공기로 약 60분간 건조하여 과탄산나트륨을 얻는다.A non-kerer reactor made of polyethylene material contains 119 g of sodium carbonate powder (89.0% of sodium carbonate), half of 50% of hydrogen peroxide, and 1 g of sodium silicate, a known stabilizer, on one side and magnesium sulfate and phenol on one side. 1 g each was added dropwise stirring and reacting with sodium carbonate simultaneously for about 30 minutes. The wet product is dried with heated air at 50 ° C. for about 60 minutes to obtain sodium percarbonate.
본 실험결과로 얻어진 안정화된 과탄산나트륨 및 미처리품을 온도 32℃, 상대습도 85%에서 5일간 방치함으로써 유효산소의 보존율을 측정한 결과는 다음과 같았다.The preservation rate of free oxygen was measured by leaving the stabilized sodium percarbonate and the untreated product at the temperature of 32 ° C. and 85% RH for 5 days.
단, 미처리품 중 A는 안정제 무첨가품, B는 공지의 안정제만 첨가한 제품임.However, among the untreated products, A is a stabilizer-free additive and B is a product to which only a known stabilizer is added.
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KR1019800000447A KR810000905B1 (en) | 1980-02-05 | 1980-02-05 | Method of producing sodium percarbonate |
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KR1019800000447A KR810000905B1 (en) | 1980-02-05 | 1980-02-05 | Method of producing sodium percarbonate |
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1980
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