HU191136B - Driving material of carbon dioxide base, containing corrosion inhibitors for aerosol compositions - Google Patents

Abstract

Propellants for aerosol compsns. contain based on the wt. of the compsn. 2-6 wt.% carbon-dioxide, 0.05-1.0 wt.% volatile corrosion inhibitor, 0.05-1.0 wt.% non-volatile corrosion inhibitor with surfactant properties. - The volatile corrosion inhibitor may be morpholine, alkyl-, aryl-, alkyl-, aryl- or cyclo-alkyl-aryl-amine. The non-volatile corrosion inhibitor may be an alkanol-amine, its fatty-acid-monoester or a fatty-acid salt of the latter.

Description

FIELD OF THE INVENTION The present invention relates to a carbon dioxide based anti-corrosion propellant used in aerosol compositions that protects nozzles and vials from corrosion and thus allows them to be completely emptied.

As propellants for aerosol formulations, alkyl ketones, petroleum ether, propane, butane, carbon dioxide, nitrogen oxide, chlorinated and fluorinated ethers and hydrocarbons and / or mixtures thereof are commonly used as propellants.

No. 1,385,199. Acetone, methylethylketone, petroleum ether is described in British Patent Specification as a propellant. No. 1457,031. U. S. Patent No. 4,123,128 to Feldberg proposes nitric oxide, a mixture of nitric oxide and isobutane, nitrogen gas and a mixture of nitrogen carbon dioxide as a blowing agent. No. 3,922,228. U.S. Pat. No. 4,600,198 uses a mixture of difluoromethyl, trifluoromethyl ether as propellant, mixed in various ratios.

No. 3,995,666. U.S. Patent No. 4,139,607 discloses new device and valve solutions for filling a cylinder using carbon dioxide or nitric oxide propellant. U.S. Pat. He therefore recommends a blend of more stable di-ether and carbon dioxide as propellant.

No. 3,996,153. In U.S. Patent No. 4,123,198, carbon dioxide is used as a propellant, but this solution does not completely expel the aerosol can. Therefore, a combination of difluoromethyl ether and gaseous carbon dioxide is used in varying proportions for complete evacuation. No. 4,041,148. U.S. Pat.

The propellants disclosed in the patents and used in practice do not fully meet the sacred requirements of them. They partially dismantle the ozone layer of the atmosphere, they are toxic and due to their corrosive effect, the container cannot be emptied completely.

The present invention can be overcome by the above-mentioned drawbacks. It has been found that, when using carbon dioxide propellants, corrosion inhibitors which act partly in the vapor phase, and in part by ergulizing the water optionally introduced with the materials, prevent the corrosion of the valve and thereby prevent its corrosion.

Our experiments have shown that the use of all types of carbon dioxide propellant aerosol can be completely removed from the bottle when used with appropriate and non-compatible corrosion inhibitors. Because ilium additives used as headroom inhibitors prevent valve corrosion, and non-volatile inhibitors used as headroom inhibitors ergulate the water ingested with aerosol ingredients.

In the course of our further work, it has been found that depending on the aerosol filling, in some cases only the volatile additives and in other cases only the non-volatile additives produce excellent effects.

The propellant according to the present invention is based on the weight of the aerosol composition useful ingredient in the range of from 2 to 6% by weight of carbon dioxide,

b) 0.05 to 1.0, preferably 0.05 to 0.5% by weight of morpholine, mono-, di-, tri-C 2 -C 6 alkylamine, cycloalkylamine and / or as volatile (headroom) corrosion inhibitors. a mixture thereof and / or

c) 0.05-1.0, preferably 0.05-0.5% by weight of mono-, di-, tri-2-4 alkanolamine, alkanolamine fatty acid monoester, alkanolamine fatty acid monoester as non-volatile (liquid-field) emulsifying corrosion inhibitor a fatty acid salt, preferably a mono-, di- or triethanolamine and / or a mixture thereof; and / or a mixture thereof.

The amount or mixture of inhibitors as defined above provides perfect protection against corrosion and thus ensures that the active ingredient is fully utilized.

The invention is illustrated by the following non-limiting examples.

Example 1

100 g ethereal cold starter composition 4 g carbon dioxide 0.2 g morpholine 0.2 g monoethanolamine

Example 2

100g ether cold starter composition 5.5g carbon dioxide 0.25g triethylamine

0.25 g of triethanolamine oleic acid monoester oleate

Example 3

100 g of alcoholic de-icer 3.3 g of carbon dioxide 0.05 g of morpholine 0.1 g of diethylamine

Example 4

100 g of alcoholic de-icer 4 g of carbon dioxide 0.1 g of cyclohexylamine 0.1 g of triethanolamine

Example 5

Tar gassing composition based on 100 g xylene kerosene g carbon dioxide. 0.3 g of morpholine

0.25 g of triethanolamine stearic acid monoester

-2191136

Example 6

100 g xylene-kerosene-based tar-releasing composition

3.3 g of carbon dioxide 0.25 g of triethylamine

0.25 g triethanolamine stearic acid monoester stearate

Example 7

100 g ethereal cold starter composition 4 g carbon dioxide 0.2 g morpholine 0.1 g triethylamine

Example 8

100 g of alcoholic de-icer

3.3 g of carbon dioxide 0.1 g of diethanolamine

0.05 g of triethanolamine stearic acid monoester

Example 9

100g ether cold starter composition 4g carbon dioxide 0.25g diethylamine

Example 10

100 g of alcoholic ice-solvent 4 g of carbon dioxide 0.15 g of triethanolamine

II. example

Tar gassing composition based on 100 g xylene kerosene g carbon dioxide

0.2 g of morpholine

0.1 g triethylamine

0.15 g of monoethanolamine

0.1 g of triethanolamine stearic acid monoester

Claims (3)

Carbon dioxide based propellant for aerosol compositions comprising corrosion inhibitors, characterized in that the composition is based on the weight of the aerosol (a) from 2 to 6% by weight of carbon dioxide as propellant, b) 0.05 to 1.0% by weight of morpholine, mono-, di-, tri-C 2 -alkylamine, cycloalkylamine and / or mixtures thereof as the appropriate corrosion inhibitor; c) 0.05 to 1.0 wt.% of mono-, di-, tri-C 2 -C 4 alkanolamine, alkanolamine mono-fatty acid monoester, fatty acid salt of alkanolamine monoester and / or as non-compatible emulsifying corrosion inhibitor. contains a mixture of these. (Priority: 11/11/1984) Propellant according to claim 1, characterized in that it is based on the weight of the composition (a) between 2% and 5,5% by weight of carbon dioxide as propellant, b) a suitable anti-corrosion agent of 0.05 to 0.5% by weight of morpholine, triethylamine, cyclohexylamine and / or a mixture thereof, c) 0.05 to 0.5% by weight of mono-, di- or trielanolamine and / or a mixture thereof, and a mono, di- or triethanolamine monoester or a stearic acid monoester of the same fatty acids as a non-compatible emulsifying corrosion inhibitor. ester salts and / or mixtures thereof. (Priority: 11/11/1984) 3. Carbon dioxide based propellant for aerosol compositions containing anticorrosive inhibitors, characterized in that (a) from 2 to 6% by weight of carbon dioxide as propellant, b) 0.05 to 1.0% by weight of morpholine, mono-, di-, tri-C 2 -C 6 alkylamine, cycloalkylamine and / or a mixture thereof as a suitable corrosion inhibitor, and / or c) 0.05 to 1.0% by weight of a mono-, di-, tri-C 2 -C 4 alkanolamine, an alkanolamine fatty acid monoester, an alkanolamine fatty acid monoester fatty acid and / or a non-compatible emulsifying corrosion inhibitor. or a mixture thereof. (Priority 02/02/1986)