JPS58140312A - Stable composition for generating gaseous carbon dioxide - Google Patents

Abstract

PURPOSE:To obtain a composition for generating gaseous CO2 preventing the deterioration of the blowing property and having stabilized performance by adding zeolite to a composition consisting of a carbonate and a solid or powdery acid. CONSTITUTION:This composition for generating gaseous CO2 contains a carbonate such as sodium hydrogencarbonate, a solid or powdery org. acid such as tartaric acid or succinic acid, and zeolite contg. practically no water as essential components. By the composition the deterioration of the blowing property can be preserved even in long-term storage. This composition is used as a component for a powdery soft drink, a cleaner for a denture, a detergent for a bath, etc.

Description

[Detailed description of the invention] FIELD OF THE INVENTION This invention relates to stable carbon dioxide generating compositions.

It is a well-known fact that carbon dioxide gas is produced when carbonates and acids are mixed. This phenomenon occurs in powdered soft drinks,
Used in denture cleaning steel or bath water cleaning steel.

These products are warm mixtures of solid carbonates and solid acids. The intensity with which carbon dioxide gas is generated is better as the ratio of acid and carbonate is higher. In the case of powdered juice for powdered soft drinks or cleaning agents for dentures, since the amount of water used is small, even a mixed system of powders or granules foams well. However, mixing the powdered bathwater cleanser with a large amount of water does not provide sufficient effervescence, so it is preferable to add it in the form of tablets. However, in the case of tablets, the contact between carbonate and acid decreases, so the effervescence decreases when stored for a long period of time.

The inventors take it! We conducted extensive studies to prevent the deterioration of foamability, and as a result, we discovered that the problem could be solved by adding zeolite, resulting in the present invention.

That is, the present invention provides a stable carbon dioxide gas-generating composition characterized by containing a carbonate, a solid or powdered acid, and a zeolite as essential components.

Carbonates used in the present invention include sodium bicarbonate,
Potassium bicarbonate is most preferred, but sodium carbonate and potassium carbonate can also be used.

Examples of acids used in the present invention include organic acids such as tartaric acid, citric acid, succinic acid, fumaric acid, maleic acid, and malic acid. In the present invention, the zeolite is a naturally occurring zeolite.

Any synthetic zeolite can be used, but synthetic zeolites are preferred.The synthetic zeolites used in the present invention are preferably alkyl silicates represented by the following formula (!).

(M, no) X Muj20. -(810,)a
(Summer) [y 0.6 to 10 Zeolite has crystal water in its crystal structure, and the zeolite used in the present invention may have crystal water, but the water content is preferably less than saturated crystal water, and more preferably A zeolite containing substantially no water is preferable.

What is the weight ratio of carbonate and acid in the composition of the present invention?
! I-5:5~! 5 is a good moat! S~30:s~70
is even more preferable. Also, the blending ratio of zeolite is preferably O6S to 50% by weight relative to the mixture of carbonate and acid, and 2 to S
More preferred is O weight. Although it is acceptable to add more than 50% by weight, it is undesirable because it contains a large amount of insoluble matter.

The composition of the present invention may optionally further include **sodium,
Inorganic salts such as sodium tripolyphosphate, sodium birophosphate, sodium phosphate, polyethylene glycol (2000-20000).

High molecular compounds such as carboxymethyl cellulose, hydroxyethyl cellulose, sodium citrate, WA sodium chlorate, sodium succinate, sodium marron trita, etc., anionic activators, nonionic Active Agent 9 Surfactants such as amphoteric active agents and cationic active agents, as well as small amounts of fragrances, pigments, dyes, etc., can be added as optional ingredients.

The particle size of the component according to the present invention is not particularly specified, but it is generally good to have particles that pass through a 14-mesh sieve (11111 95 or more), and an 80-mesh sieve (80
1! What remains is better.

It is also possible to use products that pass through a 100-80 Metsche sieve. One tablet of the composition of the invention preferably ranges from 0.5 to 1.
It can be compressed into 1sOfK tablets and used as a bath water additive.

The present invention will be described in further detail in the following 11 Examples.

Example 1 Zeolite (zeolite 4) in sodium bicarbonate and tartaric acid
(trade name: Zeolum 4) was added in various amounts to obtain the compositions shown in Table 1. These compositions were kept for a day and night (1
4 hours) Stored in a desiccator containing 4 ml of Zeorum, then immediately punched into 517 tablets. This tablet is packed in a labyrinth-shaped alumpyro capsule with small holes* (pyro capsule scissors with a mechanism that does not absorb moisture from the outside but releases the carbon dioxide gas generated inside, specification number 134804/1986). (Refer to the book) - A friend who fills the pocket with locks one by one. It was stored at 50°C for 20 days, and the changes in the amount of carbon dioxide gas produced were kept constant using the following method.9.

The results are shown in Table 2.

Method for measuring the amount of carbon dioxide gas produced: 2 in a 5200@l Erlenmeyer flask.
Add tap water at S℃, add the tablets into it, stir with a stirrer bead, keep the amount generated after 5 minutes constant, and at the same time add the tablets, add the Erlenmeyer flask to 500ml.
A syringe-shaped container with a capacity of 11j is connected with a polyethylene thin tube and separated by nine rubber elms, and the generated carbon dioxide gas is introduced into the syringe, and the amount of gas generated is defined as the amount of gas generated.

Table 1 Table 2 Example 2 Various carbon dioxide gas generating compositions shown in Table 1K were prepared. At that time, zeolites 21', Y, and L were each cooled in a hot section at normal pressure in an electric furnace at 500°C, and the raw materials for each were 16 mesh (11111 m) to 80 mesh 10.177 cm.
) was used. 5 fAi of fillet composition
Tablets were compressed into 50CK2 tablets, packaged in Alumpiro packaging in the same manner as in Example 1, and stored for 1 day to determine the amount of carbon dioxide released. The results are shown in Table 4.

Front Ink Table 4

Claims (1)

[Scope of Claims] 1. A stable carbon dioxide gas-generating composition, characterized in that it contains a carbonate, isomorphic or powdered acid, and zeolite as essential components. 2. The composition according to claim 1, wherein the zeolite is substantially free of moisture. 5. The composition according to claim 1, wherein the solid or powdered acid is an organic acid. 4. Organic acids are tartaric acid, citric acid, and succinic acid! The composition according to claim 5, which is leic acid, fumaric acid or malic acid. 5. The composition according to claim 1, wherein the carbonate is sodium bicarbonate, potassium bicarbonate, sodium sulfate, or potassium carbonate. 6. The composition according to claim 1, which contains a carbonate, an organic acid, and a zeolite that does not substantially absorb water.