JPH0354246A - Stringy aerosol composition - Google Patents

Abstract

PURPOSE:To obtain the title composition in the form of a long continuous string which is safe against firing by mixing a (meth)acrylic ester resin with a specified mixed aerosol propellent and usual additives. CONSTITUTION:An aerosol propellent is obtianed by mixing 15-45wt.% monochlorodifluoromethane with 40-65wt.% monochlorodifluoroethane and 15-45wt.% octafluorocyclobutane. 20-45wt.% (meth)acrylic ester resin and/or polymer resins thereof are mixed with 80-55wt.% said propellent and optionally a plasticizer, a silicone oil as a lubricant, liquid paraffin, a higher fatty acid ester, etc., and the obtained mixture is filled in a pressure vessel.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application 1] The present invention relates to an aerosol string-like braid used for hobby aerosol products and the like.

[Prior art] A string-like composition prepared by adding appropriate amounts of additives such as silicone oil, liquid paraffin, and higher fatty acid esters as plasticizers and lubricants to resins such as acrylic ester resins, methacrylic ester resins, and/or their copolymer resins. is dissolved in a propellant mixture of 1 2/1 1 liquefied Freon, stored in a pressure container, and the resulting aerosol product is injected into the atmosphere.The propellant immediately evaporates and becomes more flexible than the injection port of the pressure container. A beautiful structure is blown out. Since the aerosol string-like composition thus provides a tape-like spray, it has been commercialized as a hobby item that takes advantage of aerosol technology, and is mainly used as entertainment items at Christmas, 1A parties, weddings, and the like. In such an aerosol string composition, in order to dissolve the resin component, Freon 12/11 is used as a material that satisfies the requirements of dissolving ability of the liquefied propellant, non-toxicity, non-flammability, and appropriate vapor pressure. 60/4 of
A mixed set of Kaimono from 0 to 95/5 has been used. A nonflammable propellant was an absolute necessity, especially considering the environment in which it would be used and the fact that, unlike other aerosols, it would be used in large quantities indoors. Since 1989, the use of Freon-12 and Freon-11 has been severely restricted as they are polluting gases that destroy the ozone layer in the upper layers of the earth, making it impossible to use them.

Aerosols for human use such as hairspray, antiperspirant deodorant, etc.
The amount of liquefied gas propellants such as propane, butane, dimethyl ether, etc. is It has been demonstrated that it is safe to use. However, such aerosol products that use liquefied gas propellants can be used at parties, weddings, etc., where people are intoxicated, smoke, etc., and the presence of fire nearby and the sense of openness can distract their attention, making it difficult to use normally once. The amount is about 20 to 100 g, which is a significantly large amount compared to the amount used for other aerosol products, and the spray often adheres to people's heads, faces, chests, etc. Since the remaining liquefied gas in the sprayed material is vaporized and evaporated, it is easily ignited, and in that case, there is a danger that it will instantly cause an entire fire.

[Means for solving the problem] As mentioned above, string-like composition sprays using nonflammable liquefied gas are extremely dangerous, and nonflammable alternative chlorofluorocarbon gases are currently not being used because toxicity tests have not been completed. Can not.

According to the present invention, a mixture of chlorofluorocarbon gases known to be toxic is used, and monochlorodifluoromethane (Freon 22), monochlorodifluoroethane (Freon 142b), and octafluorocyclobutane (Freon 142b) are used as a nonflammable combination. The conventional problems were solved by using a mixture of three types of propellants: Freon C3, 1, and 8). String-shaped kumikaimono is required to be a flexible string-like body that is dried at the time it is released into the atmosphere from the spout of the aerosol container, so it is highly soluble and has a high boiling point. 1. 1-} When dichloroethane (boiling point 74°C) is mixed, it becomes a sticky and sticky propellant, and Freon 22 (boiling point -40.8'C) and Freon 14
2b (Boiling point -9.7"C) In the case of a mixture of two types of propellants, the solubility in the resin is too good, in other words, the solvent separation is poor, resulting in a sticky and soft propellant. It is not possible to obtain a string-like propellant in which the liquefied gas contained inside is vaporized and released.Also, in order to obtain a dry and non-sticky string-like object, a solvent with a low boiling point and a solvent (
Gas) A propellant with good separation is required.

According to the present invention, monochlorodifluoromethane (Freon 22) and monochlorodifluoromethane (Freon 142b)
) and octafluorocyclobutane (Freon C3), which has a low boiling point (-6°C) and has little solubility in many organic solvents and water, but improves solvent separation
18) The above-mentioned problems were solved by blending. The CFC 0318 used here is non-flammable and highly safe, so it has been used in conjunction with laughing gas as a propellant for food aerosols. Freon 142b is a combustible material with a flammability range of 7.8 to 16.8%, and compared to propane, butane, dimethyl ether, etc.
Its flammability is extremely low, such as Freon 22 and Freon 0318.
The resulting mixture is nonflammable even when mixed with up to about 60%. Each portion of the aerosol mixture propellant of the present invention contains 15 to 45 monochlorodifluoromethane.
wt%, monochlorodifluoroethane 40-65 wt%
, 15 to 45% by weight of octafluorobutane.

Moreover, the aerosol string-like braid or material of the present invention has a resin component of 20 to
45% by weight and 80-55% by weight of a mixed propellant.

Conventional additives such as silicone oil, liquid paraffin, higher fatty acid esters, etc. as plasticizers and lubricants can be added to the aerosol string-like composition of the present invention in appropriate amounts.

The following examples and comparative examples further illustrate the present invention.
Explain physically.

[Examples] Examples 1 to 4 of the present invention, conventional products, and comparative example 1 are shown below.
and 2 are summarized in Tables 1 and 2. As is clear from Tables 1 and 2, Examples 1 to 4 of the present invention, which used a mixed propellant consisting of Freon 22, Freon 142b, and Freon 0318, did not use this mixture (conventional products and Comparative Example 1 and Comparative Example 2 using a mixed propellant that deviates from the mixing ratio of the mixed propellant of the present invention
Gives a longer and better string-like body compared to.

[Effects of the Invention] According to the aerosol string-like Mi precept of the present invention, a mixed propellant consisting of monochlorodifluoromethane, monochlorodifluoroethane and octafluorobutane is used, so it is safe against fire. , a long, continuous string-like body can be obtained.

Claims (1)

[Claims] In an aerosol string composition comprising an acrylic ester resin, a methacrylic ester resin, and/or a copolymer resin thereof, an aerosol mixed propellant, and an appropriate amount of ordinary additives added thereto, monochlorodifluoromethane 15 is used as the aerosol mixed propellant. ~45% by weight of the resin component, 40-65% by weight of monochlorodifluoroethane and 15-45% by weight of octafluorocyclobutane;
-55% by weight of an aerosol string composition.