WO1998000480A1 - Liquid fuel generating coloured flame for candle - Google Patents

Abstract

A liquid fuel generating coloured flame consists of > 97 wt.% ethylene glycol and < 3 wt.% one or two colouring compounds selected from a group consisting of boron, lithium, potassium, sodium, strontium, cesium, cobalt, copper and barium. The fuel can produce red, orange, yellow, green, blue and violet colour and stable flame and no smoke when it is burned, and it is non-toxic, and safe odourless.

Description

 TECHNICAL FIELD

 The present invention relates to a color flame liquid fuel.

Background of the invention

 In the past, it was used to decorate the festive banquet environment. Generally, single-tone solid candles were used. Even special-purpose artistic candles are limited to the change of the shape and color of the candle body. In recent years, various colored flame solid candles have appeared because of their low melting points. It is difficult to store due to water absorption, etc. Some toxic substances such as nitrogen oxides are produced during combustion to pollute the environment. It is difficult to put on the market; some liquid fuels currently on sale are called ultra-pure oil in the United States. (Ultrapure oil), but its flame is still the color of ordinary candlelight.

 Japanese Patent Laid-Open No. 63258987 discloses a color flame liquid fuel. This color flame liquid fuel is composed of fatty acid alkali metal salts and alkaline earth metal salts, chelated alkali metal salts and chelated alkaline earth metal salts, or fatty compounds of alcohol and boric acid, and the manufacturing process is relatively complicated. A single or two or more substances are mixed as a coloring agent, and different multi-component liquid fuels with a boiling point of 120 ° C or higher are selected to become liquid fuels that produce colored flames. The color flame liquid fuel has a complicated structure and production. First, a metal organic compound coloring agent must be produced. For example, a red flame needs to synthesize fatty acid strontium or fatty acid lithium; a green flame requires boric acid, polyethylene glycol, and polyethylene. Ethyl alcohol is made into ethyl borate, and then the color former is dissolved in different liquid fuels. Since the chelate of the chromophoric metal cannot be dissolved in high-boiling alcohols such as glycerin and polyenzymes, anionic surfactants must be added to the liquid fuel to uniformly distribute the chromophoric substances in the liquid fuel, which not only makes the preparation It is more complicated and affects the color of the flame. Because the color percentage of the above-mentioned liquid fuel of the coloring agent is 3-30¾, if it is less than 3¾, the coloring effect cannot be fully achieved, and these coloring agents have a certain hygroscopicity. In order to reduce their hygroscopicity, Add 10-40 linoleic acid and liquid paraffin as anti-humidity agent to the liquid fuel, but the addition of anti-humidity agent will affect the color and combustion of the flame.

 Color flame liquid fuels, such as disclosed in CN1094083, JP01245093, and JP04065488, mainly use methanol and ethanol as fuels, and also use monoalcohols of less than four carbons. However, it is well known that methanol is a volatile substance that has a toxic effect on people's eyes. As for monohydric alcohols below four carbons, because of its high vapor pressure at room temperature, it is a flammable and dangerous substance and cannot be used in open containers for transportation Storage is extremely unsafe, with special requirements for packaging and containers.

 Due to the difficulty in finding suitable fuels and matching colorants, although a lot of tests have been carried out by researchers in many countries, but so far, there is no color flame liquid with good performance and truly acceptable to the majority of users See the market for fuel products.

— 1— Correction page Summary of the invention

 The object of the present invention is to provide a color flame liquid fuel for candle lamps with simple preparation process, stable and durable combustion flame, bright color, purity, non-toxicity, no pollution, and safe use, storage and transportation.

 The above-mentioned object of the present invention is achieved in such a manner that the color flame liquid fuel is mainly composed of a single component of ethylene glycol and a metal and non-metal compound coloring agent. The metal and non-metal compounds include boron, lithium, potassium, sodium, strontium, cesium, cobalt, copper, and barium compounds. The weight percentage of the color flame liquid fuel component of the present invention is fuel> 97% and color developing agent <3¾. That is, the present invention can generate a bright flame by adding a coloring agent not exceeding 3¾. For example, adding lithium chloride with a weight ratio of 0.1-2.5% in ethylene glycol will produce a red flame when burning; and adding 1.5-2.5 boric acid will emit green.

 The technical solution concept of the present invention first provides a basis for exploration in principle, that is, the characteristics that must be possessed by each component in the color flame liquid fuel formula should be:

 1. When the liquid fuel itself is burned, its flame color must be extremely light, otherwise it will disturb the color and flame effect of the colorant. Based on this, in addition to selecting low-carbon fuels, it should also try to select oxygen-containing organic compounds with a carbon / oxygen atomic ratio of 1: 1 in the chemical formula.

 2. The liquid fuel as a solvent for the color-developing agent must have a good binding and miscibility with metal salt or non-metallic compound color-developing agents. According to this, the chemical formula of the liquid fuel should have as many hydroxyl groups (-0H) as possible.

 Liquid fuels that can satisfy both of the conditions mentioned in 1, 2 are methanol, ethylene glycol, and glycerol. Their carbon / oxygen atomic ratios are both 1: 1. However, methanol has a toxic effect on human eyes and skin, and is very volatile. It is a secondary flammable and dangerous substance, which is not conducive to safety during use, storage and transportation. Glycerol is non-toxic to the human body, and it is associative at room temperature. The flash point and boiling point are extremely high, so it is extremely safe. However, its viscosity is also very high, which seriously reduces its use in cotton wicks. The transport and lifting effect of the lamp makes it impossible to guarantee the continuous burning of the flame due to insufficient liquid supply when the lamp is used. In contrast, ethylene glycol is not toxic to the human body, and the degree of association between the molecules of glyoxal at room temperature is large. Its vapor pressure is low, its flash point is 118 ° C, and its boiling point is 18 ° C. Therefore, it is used, stored and transported. It is extremely safe at the same time; although the adipic enzyme association degree is large, the macromolecules of ethylene glycol in the associated state can be depolymerized when heated, and vaporize into small molecules to participate in combustion; and the ethylene glycol contains two Hydroxyl, therefore, it has a strong binding and mutual solubility effect on various color-developing agents used in the present invention. Therefore, ethylene glycol is a liquid fuel most ideal for manufacturing color flame liquid fuel for lamps and is selected by the present invention.

 The invention has the following advantages:

 1. Due to the use of a single glycol as a fuel, it can be used in lamps in open containers, even in lamps

-2- correction page When the core tube was heated, the fuel level in the container did not ignite. When the top of the wick is ignited, the liquid level of the container is up to 8 cm, and it can still be smoothly lifted to the top of the wick under the action of the capillary of the cotton wick, continuously supplying fuel, forming a stable flame. The yellow flame is generated and affects the color of the color flame fuel flame, and only a small amount of coloring agent (weight percentage less than 3¾) can be added to obtain a bright and pure flame;

 2. Because the used coloring agent does not need to undergo complicated artificial synthesis, the fuel manufacturing process becomes simple and easy, and the cost is low;

 3. Due to the good binding and mutual solubility of the fuel ethylene glycol to the color former, the color flame generated during the combustion of the present invention is stable and durable.

Examples of the invention

 The following examples will further provide the proportional relationship between the color flame fuel and the color former components and their corresponding colors-Examples 1-13,

 Example Flame color Raw material content of each component (weight ¾)

 1 red glycol 99.90-97.50

 Lithium chloride 0. 10- 2.50

 2 red glycol 99.80-97.50

 Strontium chloride + lithium chloride 0.20- 2.50

 3 Red Aceto 99.80-97.50

 Lithium chloride + lithium acetate 0.20- 2.50

 4 Red Glycol 99. 90-97.50

 Strontium chloride + strontium acetate 0. 10- 2.50

 5 yellow glycol> 97

 Sodium chloride <3

 6 yellow glycol> 97

 Sodium hydroxide <3

 7 green glycol 98.50-97.50

 Boric acid 1.50-2.50

 8 Green Ethyl alcohol> 97

 Copper chloride <3

 9 blue glycol> 97

 Copper chloride + gasified ammonia <3

 10 Blue Glycol> 97

-3- £ front page Copper sulfate <3

 1 1 Orange Glycol 99.80-97.50

 Sodium chloride + strontium chloride 0.20- 2.50

 12 purple glycol> 97

 Cesium chloride + cobalt chloride <3

 13 Purple Glycol> 97

 Cesium chloride + potassium chloride <3

 An application example of the present invention for a color candle lamp is given in conjunction with the following drawings:

 FIG. 1 is a perspective view of a wick base of an open container colored flame liquid candle lamp according to the present invention.

 FIG. 2 is a sectional view of a wick base of the color flame liquid candle lamp of the present invention shown in FIG. 1. FIG.

 FIG. 3 is a perspective view of a wick base of a color-flame liquid candle lamp for a closed container according to the present invention.

 As shown in FIGS. 1 and 2, the color flame liquid candle lamp includes color flame liquid fuel 1, wick 2, wick base 3, open fuel container 4, and wick base 3 by a base 32 and a wick tube 31 inserted into the center of the base 32. Composition, the base 32 is placed on the fuel level inside the open fuel container 4, the wick 2 is inserted in the wick tube 31, the upper end is a combustion zone, and the lower end extends into the fuel. The wick 2 is made of cotton fiber and non-woven cloth. . With this structure of the candle lamp, its burning flame 5 height can reach> 4 cm.

 As shown in FIG. 3, the color flame liquid candle lamp may also have the following structure: including color flame liquid fuel 1, wick 2, wick base 3, closed fuel container 4, wick base 3 by a base 32 and inserted into the base 32 The center wick tube 31 is composed. The wick 2 consists of a non-woven roll and is inserted into a cotton sleeve. The fuel container 4 can reach 8 cm.

1 4 1 垔 Positive page

Claims

Rights request What is claimed is: 1. A liquid fuel for a color candle lamp, characterized in that it is mainly composed of a metal, a non-metal compound coloring agent, and a single-component ethanedoxol fuel.  The liquid fuel for a color candle lamp according to claim 1, wherein the metal and non-metal compound coloring agent is a compound of boron, lithium, potassium, sodium, strontium, cesium, cobalt, copper, or barium.  The color flame liquid fuel for a color flame candle according to claim 1, characterized in that the weight percentage of ethylene glycol and color developing agent is: fuel> 97¾, color developing agent <3%. -5- correction page