阅读说明：本技术 一种不可燃脱脂清洗剂及其应用 (Nonflammable degreasing cleaning agent and application thereof ) 是由 吴冤 金泽明 王瑞冬 于 2020-07-14 设计创作，主要内容包括：本发明属于气雾罐型清洗剂,更具体的,本发明涉及一种不可燃脱脂清洗剂及其应用。一种不可燃脱脂清洗剂,按重量份计,所述不可燃脱脂清洗剂至少包括卤代烃80-100份、脂肪醇1-10份。本发明提供的不可燃脱脂清洗剂,无论是对极性还是对非极性污垢均具有很好的清洗效果,同时还具有不可燃、毒性低、挥发快和无残留的特点,可以在高温环境下正常使用,具有更高使用安全性；本发明的不可燃脱脂清洗剂对人体无害,且与气雾罐中的二氧化碳气体的相容性较好；同时在贮存和运输过程中具有极高的化学稳定性,对被清洗表面无腐蚀性。(The invention belongs to an aerosol can type cleaning agent, and particularly relates to a non-combustible degreasing cleaning agent and application thereof. The non-combustible degreasing cleaning agent at least comprises 80-100 parts by weight of halogenated hydrocarbon and 1-10 parts by weight of fatty alcohol. The non-flammable degreasing cleaning agent provided by the invention has a good cleaning effect on polar dirt and non-polar dirt, has the characteristics of non-flammability, low toxicity, quick volatilization and no residue, can be normally used in a high-temperature environment, and has higher use safety; the non-combustible degreasing cleaning agent is harmless to human bodies, and has good compatibility with carbon dioxide gas in aerosol cans; meanwhile, the cleaning agent has extremely high chemical stability in the storage and transportation processes, and has no corrosion to the cleaned surface.)

1. The non-combustible degreasing cleaning agent is characterized by comprising 80-100 parts by weight of halogenated hydrocarbon and 1-10 parts by weight of fatty alcohol.

2. The non-flammable degreasing cleaning agent as claimed in claim 1, wherein the halogenated hydrocarbon is selected from one or more of chlorinated hydrocarbon, fluorinated hydrocarbon and chlorofluorocarbon.

3. The non-flammable degreasing cleaning agent as claimed in claim 2, wherein the ratio of the number of fluorine and chlorine atoms in the chlorofluorocarbon is 1: (1-3).

4. The non-flammable degreasing cleaning agent as claimed in claim 2, wherein the number of carbon atoms in the chlorofluorocarbon is 1 to 5.

5. The non-flammable degreasing cleaning agent according to any one of claims 1-4, wherein the fatty alcohol is selected from one or more of saturated dihydric fatty alcohol having C2-C5, fatty alcohol having C7-C13, fatty alcohol having C15-C18, and fatty alcohol having more than 20 carbon atoms.

6. The non-flammable degreasing cleaning agent according to claim 5, wherein the C7-C13 fatty alcohol is selected from one or more of n-heptanol, n-octanol, isooctanol, lauryl alcohol, n-decanol, caprylocanol and n-undecanol.

7. The non-combustible degreasing cleaning agent as claimed in claim 6, wherein the mass ratio of the caprylyl decanol to the n-undecanol is (1.2-1.8): 1.

8. the non-flammable degreasing cleaning agent as claimed in claim 1, wherein the non-flammable degreasing cleaning agent further comprises 0.5-5 parts by weight of a fatty ester.

9. The non-flammable degreasing cleaning agent according to claim 8, wherein the fatty ester is selected from one or more of myristyl myristate, cetyl myristate, stearyl myristate, myristyl palmitate, cetyl palmitate, stearyl palmitate, myristyl stearate, cetyl stearate, stearyl stearate and behenyl behenate, isocetyl myristate.

10. Use of a non-flammable degreasing cleaning agent according to any one of claims 1-9, wherein the non-flammable degreasing cleaning agent is used in aerosol cans with a vacuum degree of-0.8 to-0.6 MPa.

Technical Field

The invention belongs to an aerosol can type cleaning agent, and particularly relates to a non-combustible degreasing cleaning agent and application thereof.

Background

General degreasing cleaning agents are classified into three categories: the degreasing agent mainly comprises an alkaline substance, the degreasing agent mainly comprises a surfactant, and the degreasing agent mainly comprises a solvent degreasing agent. The first two types are aqueous solutions, and after degreasing, the aqueous solutions are washed with water and dried, which brings troubles to use. Solvent degreasers, such as single compound solvents like hydrocarbons, halogenated hydrocarbons, nitroalkanes, alcohols, aldehydes, ketones, esters, phenols, alcohol ethers, organic amines, organic acids and organic sulfides, have the disadvantage of being flammable, toxic or damaging the ozone layer.

Aerosol can type degreasing cleaning agent is widely used in steel industry, precision machining, aerospace, shipbuilding, heavy industry, civil field and household cleaning, most of aerosol can cleaning agents in the current market are inflammable and explosive products, the content generally adopts low-boiling-point hydrocarbon solvent, acetone, methyl ethyl ketone, methylal and low-carbon chain fatty alcohol to form, the propellant generally is Liquefied Petroleum Gas (LPG), dimethyl ether (DME) and the like which are easy to burn and explode, the products are easy to burn and accident in the using process, the cleaning agent can be used for cleaning after the workpiece is completely cooled, and meanwhile, high temperature and open fire areas need to be kept away, physical impact is avoided, otherwise, the untestable phenomenon is easy to occur. Meanwhile, the storage and transportation processes of the products also need to be strictly controlled according to flammable and explosive materials. Because most of hydrocarbon and oxygen-containing solvents are combustible liquids determined by chemical properties, the common cleaning agent adopts low boiling point solvents to ensure the cleaning capability and certain volatility, so that the final product becomes extremely flammable. The main raw materials adopted in the cleaning agent for solvent degreasing are halogenated hydrocarbon and petroleum hydrocarbon substances, and in the specific degreasing agent, the two raw materials are used respectively or mixed in a certain proportion. Halogenated hydrocarbons are generally high in toxicity and large in ODP value, some halogenated hydrocarbons are forbidden and some halogenated hydrocarbons are regulated to be used for a limited period, and petroleum hydrocarbon degreasing agents have the defects of low flash point, flammability, high risk and the like.

Disclosure of Invention

In order to solve the technical problems, the first aspect of the invention provides a non-combustible degreasing cleaning agent, which at least comprises 80-100 parts of halogenated hydrocarbon and 1-10 parts of fatty alcohol by weight.

As a preferred technical scheme, the halogenated hydrocarbon is selected from one or more of chlorinated hydrocarbon, fluorinated hydrocarbon and chlorofluorocarbon.

As a preferred technical solution, the number ratio of fluorine and chlorine atoms in the chlorofluorocarbon is 1: (1-3).

In a preferred embodiment, the number of carbon atoms in the chlorofluorocarbon is 1 to 5.

As a preferable technical scheme, the fatty alcohol is selected from one or more of saturated dihydric fatty alcohol of C2-C5, fatty alcohol of C7-C13, fatty alcohol of C15-C18 and fatty alcohol with the carbon atom number more than 20.

As a preferable technical scheme, the fatty alcohol of C7-C13 is selected from one or more of n-heptanol, n-octanol, isooctanol, lauryl alcohol, n-decanol, capryl-decanol and n-undecanol.

As a preferable technical scheme, the mass ratio of the octyl decanol to the n-undecanol is (1.2-1.8): 1.

as a preferable technical scheme, the non-combustible degreasing cleaning agent also comprises 0.5-5 parts by weight of fatty ester.

As a preferred technical solution, the fatty ester is selected from one or more of myristyl myristate, cetyl myristate, stearyl myristate, myristyl palmitate, cetyl palmitate, stearyl palmitate, myristyl stearate, cetyl stearate, stearyl stearate and behenyl behenate, isocetyl myristate.

The second aspect of the invention provides an application of the non-combustible degreasing cleaning agent, wherein the non-combustible degreasing cleaning agent is used for an aerosol can with the vacuum degree of-0.8 to-0.6 MPa.

Has the advantages that: the non-flammable degreasing cleaning agent provided by the invention has a good cleaning effect on polar dirt and non-polar dirt, has the characteristics of non-flammability, low toxicity, quick volatilization and no residue, can be normally used in a high-temperature environment, and has higher use safety; the non-combustible degreasing cleaning agent is harmless to human bodies, and has good compatibility with carbon dioxide gas in aerosol cans; meanwhile, the cleaning agent has extremely high chemical stability in the storage and transportation processes, and has no corrosion to the cleaned surface.

Detailed Description

The technical features of the technical solutions provided by the present invention are further clearly and completely described below with reference to the specific embodiments, and the scope of protection is not limited thereto.

The words "preferred", "more preferred", and the like, in the present invention refer to embodiments of the invention that may provide certain benefits, under certain circumstances. However, other embodiments may be preferred, under the same or other circumstances. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the invention.

In order to solve the technical problems, the first aspect of the invention provides a non-combustible degreasing cleaning agent, which at least comprises 80-100 parts of halogenated hydrocarbon and 1-10 parts of fatty alcohol by weight.

In one embodiment, the non-flammable degreasing cleaning agent comprises at least 90 parts by weight of halogenated hydrocarbon and 6 parts by weight of fatty alcohol.

Halogenated hydrocarbons

In one embodiment, the halogenated hydrocarbon is selected from one or more of chlorinated hydrocarbons, fluorinated hydrocarbons, chlorofluorocarbons.

In the present invention, the chlorinated hydrocarbon includes, but is not limited to, 1, 2-dichloroethane, 1,1 dichloroethane, 2-chloro-2-methylpropane, 3-chloropropene, 1, 1-dichloroethylene, monochloromethane, dichloromethane, trichloromethane, tetrachloromethane, 1, 1-dichloroethane, 1,1, 1-trichloroethane, 1,1, 2-trichloroethane, 1,1,1, 2-tetrachloroethane, 1,1,2, 2-tetrachloroethane, pentachloroethane, hexachloroethane, 1-chlorobutane, 2-chlorobutane, 1-chloro-2-methylpropane, 2-chloro-2-methylpropane, chloropentane, dichloropentane, 1-chlorohexane, 1-chloro-2-ethylhexane.

In the present invention, the fluorinated hydrocarbon includes, but is not limited to, one or more of 1,1,1, 2-tetrafluoroethane, pentafluoroethane, hexafluoropropene and heptafluoropropane.

In the present invention, the chlorofluorocarbon refers to a hydrocarbon containing both fluorine and chlorine substitution.

In the present invention, the chlorofluorocarbon includes, but is not limited to, one or more of monofluorodichloroethane, 1-chloro-1, 1-difluoroethane, 1-dichloro-2, 2, 2-trifluoroethane, dichlorodifluoromethane, trichlorotrifluoroethane, chlorotrifluoroethylene, chloropentafluoroethane, dichlorotetrafluoroethane.

In a preferred embodiment, the halogenated hydrocarbon is a chlorofluorocarbon.

In a preferred embodiment, the chlorofluorocarbon has a fluorine to chlorine atom number ratio of 1: (1-3); more preferably, the chlorofluorocarbon has a fluorine to chlorine atom number ratio of 1: 2.

in a preferred embodiment, the number of carbon atoms in the chlorofluorocarbon is from 1 to 5; more preferably, the number of carbon atoms in the chlorofluorocarbon is 2.

In a preferred embodiment, the number of fluorine atoms in the chlorofluorocarbon is 1 or 2; more preferably, the number of fluorine atoms in the chlorofluorocarbon is 1.

In view of the technical effect of the present invention, the halogenated hydrocarbon is monofluorodichloroethane with CAS number 1717-00-6.

In the invention, the monofluorodichloroethane is a high-purity liquid and is widely applied to the fields of cleaning and solvents. Since its destruction of the ozone layer is 1/10 of CFC113, it is designated as an ideal substitute for the perhalogenated chlorofluorocarbon compounds.

Fatty alcohols

In one embodiment, the fatty alcohol is selected from one or more of saturated dihydric fatty alcohols from C2 to C5, fatty alcohols from C7 to C13, fatty alcohols from C15 to C18, and fatty alcohols having greater than 20 carbon atoms.

In the present invention, the saturated dihydric aliphatic alcohol having C2-C5 includes, but is not limited to, one or more of 1, 2-propanediol, 1, 3-butanediol, 1, 4-butanediol, ethylene glycol, 1, 3-pentanediol, 1, 4-pentanediol, and 1, 5-pentanediol.

In the invention, the C7-C13 fatty alcohol is selected from one or more of n-heptanol, n-octanol, isooctanol, lauryl alcohol, n-decanol, capryl-decanol and n-undecanol.

In the invention, the C15-C18 fatty alcohol comprises one or more of cetyl alcohol, stearyl alcohol, pentadecyl alcohol and 1-heptadecyl alcohol.

In the present invention, the fatty alcohol having more than 20 carbon atoms includes, but is not limited to, behenyl alcohol.

In a preferred embodiment, the fatty alcohol is a C7-C13 fatty alcohol.

In a preferred embodiment, the C7-C13 fatty alcohol is a mixture of octadecyl alcohol and n-undecyl alcohol.

In a preferred embodiment, the mass ratio of the caprylyl decanol to the n-undecanol is (1.2-1.8): 1; more preferably, the mass ratio of the octyl decanol to the n-undecanol is 1.6: 1.

in the present invention, the CAS number of octadecanol is 85566-12-7, which is purchased from Shanghai Hengbin Biotech, Inc.

In the invention, the n-undecanol belongs to higher fatty alcohols, is colorless oily liquid, is inflammable, has light sweet fat and wax fragrance, rose fragrance and citrus-like and pineapple-like fruit fragrance, exists in natural citrus fruits, and has a molecular formula of C₁₁H₂₄O, CAS number 112-42-5.

In one embodiment, the non-flammable degreasing cleaning agent further comprises 0.5-5 parts by weight of a fatty ester.

In a preferred embodiment, the non-flammable degreasing cleaning agent further comprises 4 parts by weight of a fatty ester.

Fatty esters

In one embodiment, the fatty ester is selected from one or more of myristyl myristate, cetyl myristate, stearyl myristate, myristyl palmitate, cetyl palmitate, stearyl palmitate, myristyl stearate, cetyl stearate, stearyl stearate and behenyl behenate, isocetyl myristate.

Preferably, the fatty ester is a mixture of myristyl myristate and isocetyl myristate.

In a preferred embodiment, the mass ratio of myristyl myristate to isocetyl myristate is 1: (1-3); more preferably, the mass ratio of myristyl myristate to isocetyl myristate is 1: 2.

in the present invention, the molecular formula of the myristyl myristate is C₂₈H₅₆O₂CAS number 3234-85-3.

In the invention, the CAS number of the isocetyl myristate is 83708-66-1, and the molecular formula is C₃₀H₆₀O₂。

In the invention, the preparation method of the non-combustible degreasing cleaning agent comprises the following steps: and (3) uniformly mixing the halogenated hydrocarbon, the fatty alcohol and the fatty ester to obtain the non-combustible degreasing cleaning agent.

The inventor finds that the addition of the octadecanol and the n-undecanol into the monofluoro dichloroethane not only has incombustibility, but also can enhance the cleaning effect on polar or non-polar dirt, and the inventor believes that the reason is that the octadecanol and the n-undecanol are not low boiling point substances, have the characteristics of incombustibility, low toxicity, quick volatilization and no residue, can be normally used in a high-temperature environment, and the monofluoro dichloroethane has no flash point, has very low surface tension and very high KB value, has super-strong dissolving capacity on the non-polar dirt, and simultaneously has stronger polarity of the octadecanol and the n-undecanol, thereby further enhancing the cleaning effect on the polar oil stain. In addition, the applicant also unexpectedly found that when the fatty ester is myristyl myristate or isocetyl myristate, the non-flammable degreasing cleaning agent prepared by the invention has good chemical stability under high-temperature environment and is non-corrosive to the surface to be cleaned, and the reason presumed by the inventor is that monofluorodichloroethane has strong penetration capacity, and the myristyl myristate and isocetyl myristate interact with each other, so that the cleaning power of the octyldecanol, the n-undecanol and the monofluorodichloroethane is enhanced, the surface to be cleaned is non-corrosive, the extremely high stability can be maintained in the transportation process, the non-flammable degreasing cleaning agent is particularly suitable for aerosol can type cleaning agents, and the non-flammable degreasing cleaning agent has a spraying effect with good spitting amount and atomization effect.

The second aspect of the invention provides an application of the non-combustible degreasing cleaning agent, wherein the non-combustible degreasing cleaning agent is used for an aerosol can with the vacuum degree of-0.8 to-0.6 MPa.

In one embodiment, the aerosol canister uses carbon dioxide gas as a propellant that is completely non-combustible.

In one embodiment, the aerosol canister has a stock solution weight of 297 and 303 g/canister.

In one embodiment, the carbon dioxide is present in an amount of 12 to 16 g/can.

In one embodiment, the non-flammable degreasing cleaning agent in the aerosol canister is at a pressure of 0.45 to 0.55MPa at 25 ℃.

The present invention will be specifically described below by way of examples. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.

In addition, the starting materials used are all commercially available, unless otherwise specified.