JPS58176115A - Stabilized active silicic acid sol liquid obtained by mixing active silicic acid sol with water containing acidic ion and obtained by electrolysis - Google Patents

Abstract

PURPOSE:To prepare stabilized active silicic acid sol by mixing active silicic acid sol with acidic ions produced by electrolysis. CONSTITUTION:An active silicic acid sol liquid (0.01-60% concentration in terms of SiO2) is usually prepared by adding concentrated sulfuric acid to a calcium silicate compound, has pH value of 2.5-3.5 and is free from surface electrical charge. Accordingly, it forms a temporarily stabilized sol liquid, however, the gelation proceeds with time and the storage of the sol liquid is difficult. The stability of the liquid can be improved by mixing the liquid 10-100% of ionic water having pH of 2.8-4 and obtained by electrolysis. For example, the storage life of an active silicic acid sol (20% solution of active silicic acid) can be elongated by about 30 days and 90 days by adding 100cc and 500cc of acidic ionized water to 1,000cc of the sol, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION Since the activated silicate sol is produced by adding concentrated sulfuric acid to a calcium silicate compound, the pH of the activated silicate sol is naturally 2.5 to 5.5. This means that the activated silicic acid sol has no surface charge. That is, the activated silicic acid sol liquid forms a temporarily stable sol liquid, but as time passes, it gradually progresses toward gelation, making it difficult to store. Furthermore, even when an activated silicic acid sol is used as the main ingredient and a derivative depending on the purpose of the product is added thereto, the product is unstable because it has a strong tendency to proceed in the direction of gelation.

Activated silicic acid sol contains active groups such as silanol groups and siloxane/
Although it is widely accepted that the deodorizing effect is achieved by the action of the base, if onion agents, cation agents, etc. are mixed in to further enhance the effect, gelation immediately begins, which is a drawback in terms of manufacturing method. There was. The present inventor has added acidic ion water (PH2, 8 to 4) using an electrolytic method to active silicic acid sol.
．． It was discovered that by successively mixing K with 0), the active silicic acid No.2 sol becomes stable.

Next, about the experiment and results: Activated silicic acid sol 200,000 PPm (Activated silicic acid 20% solution)
Add 100CC of acidic ion water to 1000CC, 300
CC15QOCCI 1000CC was added and mixed respectively. In addition, in the case of standard activated silicate sol, 200,000 PPm (
(Activated silicic acid 20% solution) For 1000CC, the number of days for stabilization can be extended by increasing the amount of distilled water (100C:C, 300), and if the same amount of activated silicic acid sol is added as 1OOCC, it will exceed 600 days. However, when distilled water was added to the activated silicic acid sol, IQOCCl 500CC1500
C.C.

The result of adding and mixing each with 1000CC is 1
The occurrence of gelation was observed within 0 to 15 days. That is, it has been found that there is a clear correlation between the amount of acidic ion water added and the activated silicic acid sol.

(Fig. 1) (Fig. 2) ■Amount of added ionized water Amount of distilled water added N003 Furthermore, according to test results in which nonionic cationic agents were added to activated silicic acid sol, gelation occurred within a few days, but acidic ions It was found that when the same amount of water was added, no gelation occurred even if the product was left for more than one year, and could be stored for a long time. That is, activated silicic acid sol can be used as a deodorant,
In order to use it for multiple purposes, it is necessary to combine it with derivatives, and together with the properties of active silicic acid sol, it is possible to expand the scope of its effective use. In other words, it was confirmed that stabilization can be achieved by adding and mixing a certain amount of acidic ionized water produced by electrolysis to the activated silicate sol solution in order to ensure its effectiveness and shelf life. .

Procedures Amendment Letter dated August 1980, Tsuboichi, Commissioner of the Patent Office, 3, Person making the amendment 4, Date of amendment order: July 27, 1980, O1 Description 2, Claims Active silicic acid Stable active silicic acid sol characterized by acidic PH2.8 to 4.0 ion water (mixed at a ratio of 10 to 100 degrees) produced by electrolysis in a sol liquid (0.01 to 60 degrees as SiO2). It is a liquid.

Since the active silicic acid sol is manufactured by adding , the pH of the activated silicic acid sol is naturally 2.5 to 6.5, and there is no surface charge of the activated silicic acid sol. That is, the activated silicic acid sol liquid forms a temporarily stable sol liquid, but as time passes, it gradually progresses toward gelation, making storage difficult. Furthermore, even when an active silicic acid sol is used as the main ingredient and a derivative depending on the purpose of the product is added to it, the product tends to gel, resulting in unstable products.

It is well known and widely recognized that activated silicic acid sol has a deodorizing effect due to the action of active groups such as silanol groups and siloxane groups, but in order to further enhance the effect, onion agents, cation agents, etc. are mixed in. As a result, gelation immediately began, which caused a manufacturing problem. The present inventor has added acidic ion water (PH2, 8 to 4) using an electrolytic method to active silicic acid sol.
, 0), activated silicic acid I
2. It was discovered that the sol becomes stable.

Next, about the experiment and results: Activated silicic acid sol 200,000 PPm (20% activated silicic acid solution)
1oocc K, 1oocc acidic ion water, 6
oocc, 5oocc, and 1ooocc were added and mixed. In addition, in the case of standard activated silicic acid sol, 100 OCO of 1d200,000 PPm (20% active silicic acid solution) is mixed with 1 oocc of distilled water.

30000.500C (:!, 1000C (1! and I+Nia II respectively) mixed fc. As shown in Figures 1 and 2, the results are as follows: As the number of stabilization increases, the number of stabilizations can be increased, and when the same amount of J DDOCC as the activated silicic acid sol was added, it remained stable even after 1d3001J, but when 100cc of distilled water was added to the activated silicic acid sol.

5oocc, 5oocc, 1aaacc and 1 each
1 Attachment jJD iW A L, fc results are all 10
The occurrence of gelation was observed in ~15 days. That is, it has been found that there is a clear correlation between the amount of acidic ion water added and the activated silicic acid sol.

Furthermore, according to test results when a nonionic cationic agent was added to activated silicate sol, gelation occurred within a few days, but when the same amount of acidic ionized water was added, gelation did not occur even after being left for over a year. It was found that the product could withstand long-term storage without any occurrence. That is, active silicic acid sol, including lotus for deodorant,
In order to use it for multiple purposes, it is necessary to combine it with derivatives, and together with the properties of active silicic acid sol, it is possible to expand the scope of its effective use. In other words, the acidic N
o, 5 Adding ionized water to the activated silicic acid sol solution at a certain ratio,
It was confirmed that stabilization can be achieved by mixing it.

[Brief explanation of the drawing]

In the plan view of FIG. 1, the vertical axis represents the number of days, and the minimum unit is 30 days. Further, the horizontal axis shows the amount of acidic ion water added as a percentage, and the minimum unit is 10 inches. In the plan view of FIG. 2, the vertical axis represents the number of days, with 60 days being the minimum unit. Further, the horizontal axis shows the amount of distilled water added in percentage, and the minimum unit is 10 inches. Japanese Unexamined Patent Publication No. 58-176115 (3) (Reference 2.1)

Claims (1)

[Claims] Acidic pn2β-4β ion water (10%
This is a stable active silicic acid sol liquid characterized by the fact that it is mixed at a ratio of -100%.