Modified banana oil composition, modified banana oil and application of modified banana oil

Abstract

The invention belongs to the technical field of solvents, and particularly relates to a modified banana oil composition, modified banana oil and application of the modified banana oil. The composition comprises the following components in parts by weight: 20-50 parts of an alcohol ether solvent, 15-30 parts of an alcohol solvent, 5-20 parts of a ketone solvent, 8-25 parts of an ester solvent, 5-20 parts of a compound as shown in a formula (I), 0.1-5 parts of alkyl carboxylic acid and 0.05-3 parts of a surfactant, in the formula (I), X is a chloride ion, a nitrate ion, a p-benzenesulfonate ion, a tetrafluoroborate ion or a hexafluorophosphate ion. The banana oil composition can effectively remove oil stains, can effectively adjust the viscosity of paint, especially the viscosity of acrylate paint, and can promote the drying speed of the paint.

Description

Technical Field

[0001] The present invention belongs to the technical field of solvents, and particularly relates to a modified thinners composition, a modified thinners and its applications. Background Art

[0002] Thinners, also known as "banana oil", is a common industrial solvent. The main functions of thinners are: (1) Diluting paint: used to adjust the viscosity of paint; (2) Cleaning oil stains: used for residual oil stains during machinery; (3) Solvent for certain materials. Traditional thinners are mainly composed of benzene-based solvents (accounting for 30-60% usually), supplemented with esters (such as ethyl acetate), ketones (such as acetone) and alcohols (such as ethanol) solvents compounded. Although benzene-based solvents have excellent solubility, their high toxicity, volatile organic compounds (VOCs) emissions and environmental residue problems have become the key bottlenecks restricting the sustainable development of the industry.

[0003] In order to reduce the use of benzene-based solvents, currently the following methods are often used in the industry to improve the formula of thinners: (1) Using a single environmentally friendly solvent (such as propylene glycol methyl ether acetate, propylene glycol methyl ether acetate, etc.) to replace benzene-based solvents. However, the dissolution efficiency of these components for high-viscosity oils is 30-50% lower than that of benzene-based solvents, and it is necessary to extend the cleaning time or increase the use temperature, resulting in increased energy consumption; (2) Mixing alcohols, esters and ethers to simulate the dissolution spectrum of benzene-based solvents. However, it is difficult to match each component to achieve good solubility, resulting in a low removal rate of oil stains.

[0004] The prior art shows that the core contradiction in developing a benzene-based solvent replacement formula lies in the balance between maintaining solubility and reducing toxicity. Summary of the Invention

[0005] The first aspect of the present invention provides a modified thinners composition. By weight, the composition contains: 20-50 parts of alcohol ether solvents, 15-30 parts of alcohol solvents, 5-20 parts of ketone solvents, 8-25 parts of ester solvents, 5-20 parts of the compound shown in formula (I), 0.1-5 parts of alkyl carboxylic acid, 0.05-3 parts of surfactant;

[0006]

[0007] In formula (I), X is a chloride ion, a nitrate ion, a p-toluenesulfonate ion, a tetrafluoroborate ion or a hexafluorophosphate ion.

[0008] The thinners composition in the present invention can effectively remove oil stains, and at the same time can effectively adjust the viscosity of paint, especially the viscosity of acrylate paints, and can also promote the drying speed of paint.

[0009] As a preferred technical solution of the present invention, by weight, the composition contains: 30-35 parts of an alcohol ether solvent, 18-20 parts of an alcohol solvent, 15-18 parts of a ketone solvent, 12-15 parts of an ester solvent, 12-15 parts of a compound represented by formula (I), 1-1.5 parts of an alkyl carboxylic acid, and 0.2-0.5 parts of a surfactant.

[0010] The alcohol ether solvent refers to a compound containing both a hydroxyl group (-OH) and an ether bond (-O-). As a preferred technical solution of the present invention, the alcohol ether solvent is selected from ethylene glycol ether solvents and / or propylene glycol ether solvents, preferably propylene glycol ether solvents.

[0011] By adopting the above technical solution in the present invention, the composition has better oil stain removal property, solubility and quick drying property.

[0012] As a preferred technical solution of the present invention, the propylene glycol ether solvent is selected from at least one of propylene glycol monomethyl ether, propylene glycol monobutyl ether, propylene glycol monophenyl ether and propylene glycol dimethyl ether, preferably a combination of propylene glycol monomethyl ether and propylene glycol monophenyl ether.

[0013] By adopting the above technical solution and using a specific propylene glycol ether solvent, the composition has better oil stain removal property, solubility and quick drying property.

[0014] As a more preferred technical solution of the present invention, the weight ratio of propylene glycol monomethyl ether to propylene glycol monophenyl ether is 1:(0.1-0.8), such as 1:0.1, 1:0.2, 1:0.3, 1:0.4, 1:0.5, 1:0.7 or 1:0.8, preferably 1:(0.3-0.5).

[0015] As a preferred technical solution of the present invention, the alcohol solvent is selected from at least one of ethanol, isopropanol, n-propanol, n-butanol and propylene glycol.

[0016] As a preferred technical solution of the present invention, the alcohol solvent is a combination of ethanol and n-butanol.

[0017] By selecting the combination of ethanol and n-butanol as the alcohol solvent in the present invention, the composition can better comprehensively achieve the effects of oil stain removal property, solubility and quick drying property.

[0018] As a more preferred technical solution of the present invention, the weight ratio of ethanol to n-butanol is 1:(0.1-1), such as 1:0.1, 1:0.2, 1:0.3, 1:0.4, 1:0.5, 1:0.6, 1:0.7, 1:0.8, 1:0.9, 1:1, preferably 1:(0.3-0.4).

[0019] In the present invention, controlling the ethanol and n-butanol within the above ratio range enables the composition to better comprehensively achieve the effects of oil stain removal, solubility, and fast drying.

[0020] As a preferred technical solution of the present invention, the ketone solvent is selected from at least one of acetone, butanone, cyclohexanone, and acetophenone.

[0021] As a more preferred technical solution of the present invention, the ketone solvent is a combination of acetone and cyclohexanone.

[0022] In the present invention, selecting the combination of acetone and cyclohexanone as the ketone solvent enables the composition to better comprehensively achieve the effects of oil stain removal, solubility, and fast drying.

[0023] As a more preferred technical solution of the present invention, the weight ratio of acetone to cyclohexanone is 1:(0.1 - 1), for example, 1:0.1, 1:0.2, 1:0.3, 1:0.4, 1:0.5, 1:0.6, 1:0.7, 1:0.8, 1:0.9, 1:1, and preferably 1:(0.1 - 0.2).

[0024] The ester solvent is an organic compound containing an ester group (-COO-). As a preferred technical solution of the present invention, the ester solvent is selected from at least one of ethyl acetate, butyl acetate, isopropyl acetate, and dimethyl carbonate.

[0025] As a more preferred technical solution of the present invention, the ester solvent is a combination of ethyl acetate and dimethyl carbonate.

[0026] In the present invention, selecting the combination of ethyl acetate and dimethyl carbonate as the ester solvent better comprehensively achieves the effects of oil stain removal, solubility, and fast drying.

[0027] As a more preferred technical solution of the present invention, the weight ratio of ethyl acetate to dimethyl carbonate is 1:(0.3 - 1), for example, 1:0.3, 1:0.4, 1:0.5, 1:0.6, 1:0.7, 1:0.8, 1:0.9, 1:1, and preferably 1:(0.4 - 0.5).

[0028] The composition in the present invention can also effectively adjust the viscosity of the paint, especially the viscosity of acrylate paints, and at the same time can promote the drying speed of the paint. It is speculated that on the one hand, because the various components in the composition act synergistically with each other, especially the compound shown in formula (I) in the composition can form π-π interactions with the benzene ring, enhancing solubility, and at the same time acting synergistically with the surfactant to make the composition have good film-forming properties.

[0029] As a preferred technical solution of the present invention, in formula (I), X is a nitrate ion.

[0030] In the present invention, the selection of the above compounds can make the composition have better comprehensive properties, especially the effect of removing oil stains.

[0031] On the basis of containing the compound shown in formula (I), the composition in the present invention has the addition of an alkyl carboxylic acid, and can also effectively adjust the viscosity of the paint, especially the viscosity of acrylate paints, and at the same time can promote the drying speed of the paint.

[0032] As a preferred technical solution of the present invention, the alkyl carboxylic acid is selected from at least one of acetic acid, propionic acid, lauric acid, palmitic acid and stearic acid, and is preferably propionic acid.

[0033] As a preferred technical solution of the present invention, the surfactant is selected from bio-based surfactants.

[0034] As a more preferred technical solution of the present invention, the bio-based surfactant is selected from alkyl polyglucosides.

[0035] As a more preferred technical solution of the present invention, the model of the alkyl polyglucoside is Clariant 818UP.

[0036] The second aspect of the present invention provides a modified thinner, and the modified thinner contains the modified thinner composition described in the first aspect of the present invention.

[0037] The modified thinner containing the composition of the present invention has excellent oil stain removal property, and can also better adjust the viscosity of the paint, especially the viscosity of acrylate paints, and at the same time can promote the drying speed of the paint.

[0038] There is no specific limitation on the preparation method of the modified thinner in the present invention, and each component in the modified thinner composition can be mixed evenly.

[0039] The third aspect of the present invention provides the application of the modified thinner described in the second aspect of the present invention in diluting paint.

[0040] The paint described in the present invention can be a conventional paint in the art, and preferably the paint is an acrylic polyurethane varnish.

[0041] The fourth aspect of the present invention provides the application of the modified thinner described in the second aspect of the present invention in cleaning oil stains.

[0042] The oil stains in the present invention can be common types of oil stains in the art, such as common lubricating oil in the art.

[0043] Compared with the prior art, the present invention has at least the following beneficial effects:

[0044] 1. Traditional thinners contain benzene solvents, and these solvents are highly toxic. By optimizing the composition compatibility system, the present invention can significantly improve the penetration and stripping efficiency of oil-based pollutants while maintaining the inherent solubility of thinners on the premise of completely abandoning benzene solvents.

[0045] 2. The composition in the present invention effectively solves the technical pain points of traditional thinners with single function and poor adaptability, and has significant application advantages in high-end coating fields such as automotive refinish paints and industrial baking paints. Specific Embodiments

[0046] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0047] Example 1

[0048] Preparation of Modified Thinner:

[0049] By weight, 24 parts of propylene glycol monomethyl ether, 10.5 parts of propylene glycol monophenyl ether, 14 parts of ethanol, 5 parts of n-butanol, 14 parts of acetone, 2.3 parts of cyclohexanone, 10 parts of ethyl acetate, 5 parts of dimethyl carbonate, 12 parts of 1-benzyl-3-methylimidazolium nitrate (CAS No. 1277192-18-3), 1 part of propionic acid and 0.2 part of alkyl polyglycoside (Clariant 818UP) are mixed evenly to obtain the modified thinner.

[0050] The obtained mixture is the modified thinner.

[0051] Example 2

[0052] Preparation of Modified Thinner:

[0053] By weight, 22.5 parts of propylene glycol monomethyl ether, 9.5 parts of propylene glycol monophenyl ether, 15.3 parts of ethanol, 4.6 parts of n-butanol, 14.8 parts of acetone, 2.5 parts of cyclohexanone, 10 parts of ethyl acetate, 4.5 parts of dimethyl carbonate, 15 parts of 1-benzyl-3-methylimidazolium nitrate (CAS No. 1277192-18-3), 1.2 parts of propionic acid and 0.3 part of alkyl polyglycoside (Clariant 818UP) are mixed evenly to obtain the modified thinner.

[0054] Example 3

[0055] Preparation of Modified Thinner:

[0056] By weight, 25 parts of propylene glycol monomethyl ether, 10 parts of propylene glycol monophenyl ether, 13 parts of ethanol, 5.2 parts of n-butanol, 15.2 parts of acetone, 2 parts of cyclohexanone, 10 parts of ethyl acetate, 4 parts of dimethyl carbonate, 13.3 parts of 1-benzyl-3-methylimidazolium nitrate (CAS No. 1277192-18-3), 1 part of propionic acid and 0.5 part of alkyl polyglycoside (Clariant 818UP) are mixed evenly to obtain the modified thinners.

[0057] Example 4

[0058] Preparation of the modified thinners:

[0059] By weight, 34.5 parts of propylene glycol monomethyl ether, 14 parts of ethanol, 5 parts of n-butanol, 14 parts of acetone, 2.3 parts of cyclohexanone, 10 parts of ethyl acetate, 5 parts of dimethyl carbonate, 12 parts of 1-benzyl-3-methylimidazolium nitrate (CAS No. 1277192-18-3), 1 part of propionic acid and 0.2 part of alkyl polyglycoside (Clariant 818UP) are mixed evenly to obtain the modified thinners.

[0060] Example 5

[0061] Preparation of the modified thinners:

[0062] By weight, 34.5 parts of propylene glycol monophenyl ether, 14 parts of ethanol, 5 parts of n-butanol, 14 parts of acetone, 2.3 parts of cyclohexanone, 10 parts of ethyl acetate, 5 parts of dimethyl carbonate, 12 parts of 1-benzyl-3-methylimidazolium nitrate (CAS No. 1277192-18-3), 1 part of propionic acid and 0.2 part of alkyl polyglycoside (Clariant 818UP) are mixed evenly to obtain the modified thinners.

[0063] Example 6

[0064] Preparation of the modified thinners:

[0065] By weight, 24 parts of propylene glycol monomethyl ether, 10.5 parts of propylene glycol monophenyl ether, 14 parts of ethanol, 5 parts of n-butanol, 14 parts of acetone, 2.3 parts of cyclohexanone, 10 parts of ethyl acetate, 5 parts of dimethyl carbonate, 12 parts of 1-benzyl-3-methylimidazolium chloride (CAS No. 36443-80-8), 1 part of propionic acid and 0.2 part of alkyl polyglycoside (Clariant 818UP) are mixed evenly to obtain the modified thinners.

[0066] Example 7

[0067] By weight, 24 parts of propylene glycol monomethyl ether, 10.5 parts of propylene glycol monophenyl ether, 14 parts of ethanol, 5 parts of n-butanol, 14 parts of acetone, 2.3 parts of cyclohexanone, 10 parts of ethyl acetate, 5 parts of dimethyl carbonate, 12 parts of 1-benzyl-3-methylimidazolium nitrate (CAS No. 1277192-18-3), 1 part of lauric acid and 0.2 part of alkyl polyglycoside (Clariant 818UP) are mixed evenly to obtain the modified thinners.

[0068] Comparative Example 1

[0069] Preparation of the modified thinners:

[0070] By weight, 15 parts of n-butyl acetate, 15 parts of ethyl acetate, 12 parts of n-butanol, 5 parts of ethanol, 8 parts of acetone and 40 parts of toluene are mixed evenly to obtain the thinners.

[0071] Comparative Example 2

[0072] Preparation of the modified thinners:

[0073] By weight, 26.2 parts of propylene glycol monomethyl ether, 11.3 parts of propylene glycol monophenyl ether, 16.2 parts of ethanol, 5.8 parts of n-butanol, 16.5 parts of acetone, 2.8 parts of cyclohexanone, 12 parts of ethyl acetate, 6 parts of dimethyl carbonate, 1 part of propionic acid and 0.2 part of alkyl polyglycoside (Clariant 818UP) are mixed evenly to obtain the modified thinners.

[0074] Comparative Example 3

[0075] Preparation of the modified thinners:

[0076] By weight, 24 parts of propylene glycol monomethyl ether, 10.5 parts of propylene glycol monophenyl ether, 14 parts of ethanol, 5 parts of n-butanol, 14 parts of acetone, 2.3 parts of cyclohexanone, 10 parts of ethyl acetate, 5 parts of dimethyl carbonate, 12 parts of 1-benzyl-3-methylimidazolium nitrate (CAS No. 1277192-18-3) and 1.2 parts of alkyl polyglycoside (Clariant 818UP) are mixed evenly to obtain the modified thinners.

[0077] Performance Test

[0078] 1. Oil stain removal effect test

[0079] 0.5 mL of industrial lubricating oil (ISO VG 32) is evenly coated on the surface of a 10 cm × 10 cm steel plate and left standing at room temperature for 30 minutes to form a stable oil film. The (modified) thinners in the examples and comparative examples are sprayed using a quantitative sprayer, and the time required for complete removal of the oil stain is recorded; among them, when there are no visible oil stains visually and no residue is left after wiping with a cotton swab, the oil stain is considered to be completely removed.

[0080] The mass difference of the steel plate before and after treatment is measured by the weighing method, and the material residue rate on the surface of the steel plate is calculated:

[0081] Material residue rate = (mass of the treated steel plate - mass of the original steel plate) / mass of the original steel plate * 100%

[0082] 2. Fast-drying effect test

[0083] The acrylic polyurethane varnish with a content of 65 wt% is diluted with the (modified) thinner in the examples and comparative examples as the solvent, and the mass ratio of the solvent to the varnish is 0.5:1. The diluted varnish is evenly sprayed on a 15 cm × 15 cm glass plate to make the wet film thickness 50 μm, and the dry-to-touch time is recorded (no trace after pressing with a filter paper for 10 s).

[0084] The test results of the oil stain removal effect and the fast-drying effect are shown in Table 1.

[0085] Table 1 Test results of the oil stain removal effect and the fast-drying effect

[0086]

[0087]

[0088] It can be seen from the test results in Table 1 that the modified thinner in the present invention can effectively remove oil stains, and at the same time can effectively adjust the viscosity of the paint and promote the drying speed of the paint.

[0089] The above is the preferred implementation manner of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A modified thinner water composition, characterized in that: The composition contains, by weight: 20-50 parts of alcohol ether solvents, 15-30 parts of alcohol solvents, 5-20 parts of ketone solvents, 8-25 parts of ester solvents, 5-20 parts of the compound represented by formula (I), 0.1-5 parts of alkyl carboxylic acids, and 0.05-3 parts of surfactants; In formula (I), X is a chloride ion, a nitrate ion, a p-toluenesulfonate ion, a tetrafluoroborate ion or a hexafluorophosphate ion.

2. The composition according to claim 1, characterized in that The composition contains, by weight: 30-35 parts of alcohol ether solvents, 18-20 parts of alcohol solvents, 15-18 parts of ketone solvents, 12-15 parts of ester solvents, 12-15 parts of the compound represented by formula (I), 1-1.5 parts of alkyl carboxylic acids, and 0.2-0.5 parts of surfactants.

3. The composition according to claim 1 or 2, characterized in that The alcohol ether solvent is selected from ethylene glycol ether solvents and / or propylene glycol ether solvents.

4. The composition according to claim 1 or 2, characterized in that The alcohol solvent is selected from at least one of ethanol, isopropanol, n-propanol, n-butanol and propylene glycol.

5. The composition according to claim 1 or 2, characterized in that The ketone solvent is selected from at least one of acetone, butanone, cyclohexanone and acetophenone; the ester solvent is selected from at least one of ethyl acetate, butyl acetate, isopropyl acetate and dimethyl carbonate.

6. The composition according to claim 1 or 2, characterized in that The alkyl carboxylic acid is selected from at least one of acetic acid, propionic acid, lauric acid, palmitic acid and stearic acid.

7. The composition according to claim 1 or 2, characterized in that The surfactant is selected from bio-based surfactants.

8. A modified thinner, characterized in that: The modified thinner contains the modified thinner composition described in any one of claims 1-7.

9. Use of the modified thinner according to claim 8 in diluting paint.

10. Use of the modified thinner according to claim 8 in cleaning oil stains.

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