CZ295895B6 - Liquid bubble-forming solution for making luminescent bubbles - Google Patents

Abstract

In the present invention, there is disclosed a liquid bubble-forming solution for making luminescent bubbles containing 67 to 89 percent by volume water, 8 to 25 percent by volume surface-active agent, 2 percent by volume glycerin and 1 to 6 percent by volume fluorescent brightening agent and adjusted to make light-emitting bubbles when viewed in dark and in the presence of external source of invisible ultraviolet or infra-red radiation. The fluorescent brightening agent is represented by a liquid of light brown color being selected from the group consisting of diaminestilbene sulfonic acid derivatives.

Description

Technical field

BACKGROUND OF THE INVENTION The present invention relates to a liquid bubble-forming solution for producing fluorescent bubbles, and more particularly to a liquid bubble-forming solution adapted to produce bubbles that emit light when viewed in the dark and in the presence of an external source of invisible ultraviolet or infrared radiation.

BACKGROUND OF THE INVENTION

The known liquid bubble forming solution to form bubbles luminous in the dark is comprised of 75% to 90% by volume of surfactant and 10% to 25% by volume of fluorescent agent and is adapted to provide bubble luminosity when observed in the dark in the presence of an external invisible source ultraviolet or infrared radiation. This liquid bubble forming solution composition has a number of disadvantages as described below, i.e., high manufacturing costs due to high fluorescent agent concentration, low bubble formation rate due to low surface tension due to high fluorescent agent concentration, low luminous effects because of low surface area voltage is the fluorescent light evenly distributed in the bubbles and the edge of each bubble is less radiant, high risk of contamination, because the dispersion of a particular pigment is added to the latex-like liquid bubble solution to create a particular bubble color, so on clothing or other object touched by the liquid bubble solution, a color spot is formed.

SUMMARY OF THE INVENTION

These drawbacks are largely overcome by the liquid bubble forming solution of the present invention for producing fluorescent bubbles that emit light when observed in the dark and in the presence of an external source of invisible ultraviolet or infrared radiation, the liquid bubble forming solution consisting of 67-89% by volume of water. up to 25% by volume of a surfactant, 2% by volume of glycerin and 1 to 6% by volume of a fluorescent brightener, wherein the fluorescent brightener is a light brown liquid selected from diaminostilbendisulfonic acid derivatives.

The advantage of the liquid bubble-forming solution of the present invention is the low production cost, since the concentration of the fluorescent brightener is low, only 1 to 6% by volume. Another advantage is the high rate of bubble formation due to the low concentration of the fluorescent brightener, which therefore less affects the surface tension of the bubbles. An advantage is also the high light effect, because, due to the high surface tension, the fluorescent light concentrates at the edge of each formed bubble. Another advantage is the low risk of contamination because the liquid bubble-forming solution is kept transparent or half-transparent when used with a particular dye, so that contamination of the dress, floor or object touched by the bubbles is irrelevant. Another advantage is the wide operating temperature range. The liquid bubble-forming solution contains 2% by volume glycerin, which provides a humectant effect to aid dispersion of the surfactant and dye.

DETAILED DESCRIPTION OF THE INVENTION

The invention will now be further described by way of example.

-1 CZ 295895 B6

The liquid bubble-forming solution of the present invention comprises 67 to 89% by volume of water, 8 to 25% by volume of surfactant, 2% by volume of glycerin and 1 to 6% by volume of a fluorescent brightener. The water used is well sterilized. The surfactant used is the same as that used with normal liquid bubble forming solutions and consists mainly of liquid soap. Glycerin imparts a humectant effect which aids dispersion of the surfactant and prevents the surfactant from forming a gel so as to extend the operating temperature range.

The above fluorescent brightener is a light brown liquid selected from diaminostilbendisulfonic acid derivatives. The ions of the fluorescent brightener are anions. The fluorescent brightener has the following properties: specific gravity 1.1 to 1.25 at 20 ° C, pH 7 to 9 at 20 ° C, pour point about 4 ° C, melting point about 103 ° C.

Furthermore, the fluorescent brightener is highly stable and non-reactive, neither flammable nor explosive. When diluted with water, the optical brightener is non-toxic and does not irritate the skin.

The liquid bubble forming solution of the above mixture has a transparent to semi-transparent color which gives a fluorescent light of blue to purple color when viewed in the dark and under the source of invisible ultraviolet or infrared radiation. Because bubbles have a high surface tension, fluorescent light is concentrated on the periphery of the bubbles. Further, a viscosity index improver can be added to the liquid bubble-forming solution in an amount of 0.2 to 0.8% by volume to improve its viscosity and thereby improve the rate of bubble formation.

In order to achieve a particular color, a certain dye may be added to the liquid bubble solution at a rate of 5 to 20% by volume to 80 to 95% by volume of the liquid bubble solution. The dye used is a liquid pigment. The use of glycerin aids in the dispersion of the dye particles in the liquid bubble forming solution. When mixed with the dye, the liquid bubble-forming solution is in the form of a transparent to partially transparent liquid that produces a particular color of fluorescent light when viewed in the dark and in the presence of an external source of invisible ultraviolet or infrared radiation. Since the liquid bubble-forming solution is a transparent or partially transparent liquid, only insignificant stains remain on the objects touched by the liquid bubble-forming solution.

While a particular embodiment of the invention has been described in detail for purposes of illustration, various modifications and improvements may be made without departing from the scope of the invention. Therefore, the invention is limited only by the appended claims.

Claims (6)

PATENT CLAIMS A liquid bubble-forming solution for producing luminous bubbles that emit light when observed in the dark and in the presence of an external source of invisible ultraviolet or infrared radiation, characterized in that the liquid bubble-forming solution consists of 67 to 89% by volume of water, 8 to 25 % by volume of a surfactant, 2% by volume of glycerol and 1 to 6% by volume of a fluorescent brightener, the fluorescent brightener being a light brown liquid selected from diaminostilbendisulfonic acid derivatives. -2GB 295895 B6 A liquid bubble-forming solution according to claim 1, characterized in that it has a transparent to partially transparent color. A liquid bubble-forming solution according to claim 1 or claim 2, characterized in that it contains 0.2 to 0.8% by volume of a viscosity index improver. A liquid bubble-forming solution according to any one of the preceding claims, characterized in that it comprises a colorant. The liquid bubble-forming solution of claim 4, wherein the dye is liquid. The liquid bubble-forming solution according to claim 4 or claim 5, characterized in that the dye is contained in the liquid bubble-forming solution in an amount of 5 to 20% by volume of dye to 80 to 95% by volume of the liquid bubble-forming solution.