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Safe, high performance composite casting system of aerosol not containing Freon

An aerosol and freon technology, applied in the field of composite projectile system, can solve problems such as non-explosive, dangerous products, fast pressure relief, etc., and achieve the effects of being beneficial to environmental protection, speeding up the action time, and improving use efficiency

Active Publication Date: 2009-10-21
JIANGSU YENSSEN BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the raw materials used as propellants in these products, freon is non-toxic, non-allergic and irritating; non-explosive, colorless, odorless, tasteless, does not chemically react with drugs, etc., and does not affect the stability of drugs. In the past, it was widely used in many aerosol products in this industry, but because it will destroy the ozone layer, it will be completely phased out according to the signed "Montreal Protocol on Substances that Deplete the Ozone Layer"
As flammable and explosive raw materials, hydrocarbons are quite dangerous when mixed with latent solvents such as acetone, which is also relatively dangerous.
However, due to its high pressure, high leakage rate and too fast pressure release speed, compressed gas can be sprayed in a very short time, which also has considerable limitations on the use of products.

Method used

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  • Safe, high performance composite casting system of aerosol not containing Freon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The propellant is 1,1,1,2-tetrafluoroethane, and the dispersant or compatibilizer is 1,1,1,3,3-pentafluorobutane instead of 1,1,1,-trichloro- 1-Fluoromethane (Freon F11), the proportion is 2kg of 1,1,1,2-tetrafluoroethane, 7kg of 1,1,1,3,3-pentafluorobutane.

[0016] 1,1,1,3,3-Pentafluorobutane has a suitable boiling point (40.2°C) and is a liquid at room temperature. The conventional production operations such as batching, stirring, and sub-packaging are very easy to control. The main physical and chemical properties are consistent with the original 1,1,1,-Trichloro-1-fluoromethane (Freon F11) commonly used in aerosols is relatively close (see Table 1), and has a wide range of material compatibility (see Table 2), which can replace 1,1, The application of 1,-trichloro-1-fluoromethane (F11) in aerosol does not require equipment modification and large process condition changes in the production process.

[0017] Table 1: Physical and chemical data comparison table of 1,...

Embodiment 2

[0037] The propellant is 1,1,1,2,3,3,3-heptafluoropropane, the dispersant or compatibilizer is 1,1,1,3,3-pentafluorobutane, and the ratio is 1,1,1 , 2,3,3,3-heptafluoropropane 2kg, 1,1,1,3,3-pentafluorobutane 7kg.

[0038] In the filling, Demoline powder produced by Jiangsu Yangsheng Biological Engineering Co., Ltd. is used as the active ingredient, and the weight is 1kg. All the other are basically the same as Example 1.

Embodiment 3

[0040] The propellant is 1,1,1,2-tetrafluoroethane, the dispersant or compatibilizer is 1,1,2,3,3-pentafluoropropane, and the ratio is 1,1,1,2-tetrafluoroethane Fluoroethane 2kg, 1,1,1,3,3-pentafluoropropane 7kg. In the filling, Demoline powder produced by Jiangsu Yangsheng Biological Engineering Co., Ltd. is used as the active ingredient, and the weight is 1kg. All the other are basically the same as Example 1.

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Abstract

This invention relates to a freon-free safe and efficient composite propelling system for aerosol. The composite propelling system is composed of propellent and latent solvent, dispersant or compatibilizer. The propellent is 1,1,1,2-tetrafluoroethane or 1,1,1,2,3,3,3-heptafluoropropane. The latent solvent, dispersant or compatibilizer is 1,1,1,3,3-pentafluorobutane, 1,1,2,3,3-pentafluoropropane, cyclopentane or isopentane. The composite propelling system has such advantages as wide applications, no freon, high safety and high volatilization speed.

Description

technical field [0001] The invention relates to a composite propellant system in aerosol product components. It belongs to the field of aerosol technology. Background technique [0002] As an important class of industrial products, aerosols have been widely used in personal, household, industrial, agricultural, pharmaceutical, construction, animal husbandry, fire protection, security and many other fields. The aerosol consists of active ingredients and a composite propellant system. The composite propellant system is an important part besides the active ingredients, and generally consists of a propellant, a latent solvent, a dispersant or a compatibilizer. A certain ejection pressure is required to ensure the atomization effect, and it can be quickly vaporized without residue after spraying to avoid affecting the use effect of active ingredients. In the past, different aerosol products often used chlorofluorocarbons (Freon) or hydrocarbons, compressed gases, etc. as prope...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/30
Inventor 周来生钟伟陶国新
Owner JIANGSU YENSSEN BIOTECH CO LTD
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