JP7713719B2 - Stripping composition - Google Patents

Description

The present invention relates to a stripping agent composition for removing old paint films from steel structures, vehicles, aircraft, buildings, etc.

As a method for repainting a coating film (old coating film) formed on the surface of a steel structure, vehicle, aircraft, building, etc., there is a method of peeling off the old coating film and painting a new paint. Examples of methods for peeling off the old coating film include physical methods such as sanding, blasting, and high-pressure treatment, and chemical methods using chemicals or solvents. In recent years, water-based paint-on-coat removers (aqueous removers) have been used from the perspective of problems such as dust scattering and damage to the base, risks of fire and health hazards, and environmental considerations. For example, Patent Document 1 discloses a paint-on-coat remover composition having a pH in the range of 5 to 9 and containing water, benzyl alcohol, and at least one type of cellulose derivative, with the aim of providing a water-based paint-on-coat remover composition that reduces the risks of fire and health hazards and exhibits stripping properties equal to or greater than those of solvent-based removers.

International Publication No. 2018/179925

Water-based strippers containing benzyl alcohol have excellent stripping properties, but fires and poisoning cases caused by the stripper have been reported. According to the notice "Prevention of industrial accidents in paint stripping work using strippers" by the Ministry of Health, Labor and Welfare, Labor Standards Bureau, Safety and Health Department (Kianka-Hatsu No. 0817-1 dated August 17, 2020, partially amended by Kianka-Hatsu No. 1019-1 dated October 19, 2020) issued by the Ministry of Health, Labor and Welfare, there have been reports of fires and serious poisoning cases due to inhalation during bridge construction work in which paint films were removed using strippers containing benzyl alcohol. The causative substance, benzyl alcohol, is a chemical substance used in water-based or alcohol-based strippers. Although benzyl alcohol is not subject to regulation, it is highly harmful, so measures must be taken to reduce worker exposure, such as installing exhaust systems, and workers are required to wear air-supplied masks, protective glasses, impermeable protective clothing, protective gloves, and protective boots. Therefore, while it is necessary to take measures to avoid health hazards to workers when handling stripping agents containing benzyl alcohol, the increased burden on workers and the resulting deterioration of work efficiency are major issues.

Patent Document 1 proposes that the risk of fire can be reduced by including water in the stripping composition. However, in reality, as mentioned above, fires and poisoning cases have occurred due to the use of aqueous stripping agents containing benzyl alcohol.

Therefore, the problem that the present invention aims to solve is to provide a stripping agent composition that reduces the risk of fire and health hazards associated with aqueous stripping agents containing benzyl alcohol and exhibits stripping properties equal to or greater than those of aqueous stripping agents containing benzyl alcohol.

As a result of intensive research conducted in light of the above circumstances, the inventors discovered that the above problems could be solved by using phenethyl alcohol and/or phenoxyethanol instead of benzyl alcohol in the stripping agent composition, and by using a specified amount of at least one type of cellulose derivative, and thus completed the present invention.

That is, the present invention relates to the following.
＜1＞
Component (A): phenethyl alcohol and/or phenoxyethanol,
A stripping agent composition comprising: component (B): water; and component (C): at least one cellulose derivative,
The content of the component (C) in the release agent composition is 0.1% by mass or more and 10% by mass or less,
The stripping composition has a benzyl alcohol content of less than 10 mass %.
＜2＞
The stripping agent composition according to the above item <1>, wherein the stripping agent composition is in an emulsified state.
＜3＞
The stripping composition according to the above item <1> or <2>, further comprising an evaporation inhibitor as component (D).
＜4＞
The stripping agent composition according to the above item <3>, wherein the evaporation inhibitor is at least one selected from the group consisting of an aqueous wax emulsion, paraffin wax, and liquid paraffin.
＜5＞
The stripping composition according to the above item <3> or <4>, wherein the content of the evaporation inhibitor in the stripping composition is 0.1% by mass or more and 10% by mass or less.
＜6＞
The release agent composition according to any one of the above <1> to <5>, wherein the cellulose derivative is at least one selected from the group consisting of methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl methyl cellulose, and carboxymethyl cellulose.
＜７＞
The stripping composition according to any one of the above items <1> to <6>, wherein the content of the component (A) in the stripping composition is 10% by mass or more and 90% by mass or less.
＜8＞
The stripping composition according to any one of the above <1> to <7>, wherein the content of the component (B) in the stripping composition is 10% by mass or more and 90% by mass or less.

The stripping agent composition of the present invention reduces the risk of fire and health hazards associated with aqueous stripping agents containing benzyl alcohol, and exhibits stripping properties equal to or greater than those of aqueous stripping agents containing benzyl alcohol.

The following describes in detail the form for carrying out the present invention (hereinafter simply referred to as "the present embodiment"). The following present embodiment is an example for explaining the present invention, and is not intended to limit the present invention to the following content. The present invention can be carried out with appropriate modifications within the scope of its gist. In this specification, the description "XX-YY" means "XX or more and YY or less."

The stripping composition of the present invention comprises:
Component (A): phenethyl alcohol and/or phenoxyethanol,
A stripping agent composition comprising: component (B): water; and component (C): at least one cellulose derivative,
The content of the component (C) in the release agent composition is 0.1% by mass or more and 10% by mass or less,
The content of benzyl alcohol in the stripping composition is less than 10% by mass.

<Phenethyl Alcohol and/or Phenoxyethanol (Component (A))>
The stripping composition of the present invention contains phenethyl alcohol and/or phenoxyethanol. According to the Globally Harmonized System of Classification and Labeling of Chemicals (GHS), benzyl alcohol is classified as "Category 3" in terms of acute toxicity (inhalation: vapor) and is judged to be "toxic if inhaled". On the other hand, phenethyl alcohol and phenoxyethanol are also known as cosmetic ingredients and are not classified in the GHS classification. In addition, the specific target organ toxicity (single exposure) of phenethyl alcohol is classified one level lower than that of benzyl alcohol in terms of organ damage (central nervous system, kidney). Therefore, phenethyl alcohol and phenoxyethanol have lower danger and risk of health damage than benzyl alcohol. By using phenethyl alcohol and/or phenoxyethanol instead of benzyl alcohol, the risk of fire and health damage in an aqueous stripping agent containing benzyl alcohol can be reduced.

Phenethyl alcohol and phenoxyethanol may be used in combination. When used in combination, there are no particular restrictions on the ratio of phenethyl alcohol to phenoxyethanol.

The total content of phenethyl alcohol and phenoxyethanol (component (A)) in the stripper composition is, from the viewpoint of stripping performance, preferably 10% by mass or more, more preferably 20% by mass or more, even more preferably 30% by mass or more, and even more preferably 40% by mass or more, based on the total amount of the stripper composition; and, from the viewpoint of reducing the risk of fire and health hazards, is preferably 90% by mass or less, more preferably 80% by mass or less, and even more preferably 75% by mass or less, based on the total amount of the stripper composition.

From the viewpoint of reducing the risk of health hazards, phenoxyethanol is preferred to phenethyl alcohol. From the viewpoint of further reducing the risk of health hazards, the content of phenethyl alcohol in the stripper composition is preferably 50% by mass or less, more preferably 40% by mass or less, and even more preferably 30% by mass or less, based on the total amount of the stripper composition.

<Benzyl alcohol>
The content of benzyl alcohol in the stripper composition of the present invention is less than 10% by mass. Therefore, the risk of fire and health hazards caused by benzyl alcohol can be reduced. From this viewpoint, the content of benzyl alcohol in the stripper composition of the present invention is preferably less than 5% by mass, more preferably less than 1% by mass, and even more preferably less than 0.5% by mass. It is more preferable that the stripper composition of the present invention does not substantially contain benzyl alcohol, and even more preferable that it does not contain benzyl alcohol at all. Here, "substantially" means that it may be contained as long as the effect of the present invention is achieved.

<Water (component (B))>
The stripping composition of the present invention contains water. By being a water-based stripping composition, it is possible to reduce the risks of fire and health hazards that may occur in a solvent-based stripping composition.

The content of water (component (B)) in the stripper composition is preferably 10% by mass or more, more preferably 20% by mass or more, and even more preferably 25% by mass or more, based on the total amount of the stripper composition, from the viewpoint of reducing the risk of fire and health hazards, and is preferably 90% by mass or less, more preferably 80% by mass or less, even more preferably 70% by mass or less, and even more preferably 60% by mass or less, based on the total amount of the stripper composition, from the viewpoint of strippability and the risk of composition changes due to evaporation of water.

The mass ratio (A/B) of the total amount of phenethyl alcohol and phenoxyethanol (component (A)) to water (component (B)) is preferably 10/90 to 90/10, more preferably 20/80 to 80/20, even more preferably 30/70 to 75/25, and even more preferably 40/60 to 70/30.

<Cellulose derivative (component (C))>
The stripping agent composition of the present invention contains at least one cellulose derivative. The stripping agent composition of the present invention contains a cellulose derivative, which exerts an emulsifying effect, and emulsifies water and phenethyl alcohol and/or phenoxyethanol, thereby suppressing the evaporation of water, and thus reducing the risk of fire and health hazards. In addition, in the stripping agent composition of the present invention, the cellulose derivative acts as a thickener. The stripping agent composition of the present invention contains a cellulose derivative as a thickener, so that the stripping agent composition of the present invention exerts an emulsifying effect and has a predetermined viscosity, which makes it easier to apply the stripping agent composition and prevents it from dripping after application.

As the cellulose derivative, at least one selected from the group consisting of alkyl cellulose, hydroxyalkyl cellulose, and carboxyalkyl cellulose is preferred. From the viewpoint of forming a coating, the number of carbon atoms in the alkyl group in the alkyl cellulose, hydroxyalkyl cellulose, and carboxyalkyl cellulose is preferably 1 to 8, more preferably 1 to 4, and even more preferably 1 to 3.

As the cellulose derivative, at least one selected from the group consisting of methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methylcellulose, hydroxyethyl methylcellulose, and carboxymethyl cellulose is more preferable, and at least one selected from the group consisting of methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, and hydroxypropyl methylcellulose is even more preferable.

The viscosity of the cellulose derivative, as a viscosity value of a 2% by weight aqueous solution at 20°C, is preferably 100 mPa·s or more, more preferably 150 mPa·s or more, even more preferably 200 mPa·s or more, and is preferably 15,000 mPa·s or less, more preferably 10,000 mPa·s or less, even more preferably 6,000 mPa·s or less.

Specific examples of cellulose derivatives include methylcellulose (Metolose (registered trademark) SM-4000, SM-8000 manufactured by Shin-Etsu Chemical Co., Ltd.), ethylcellulose (ETHOCEL (registered trademark) STD-200 manufactured by The Dow Chemical Company), hydroxyethylcellulose (NATROSOL (registered trademark) 250HHR, 250HR manufactured by Ashland Japan Co., Ltd.), hydroxypropylcellulose (NISSO HPC VH, H, M manufactured by Nippon Soda Co., Ltd.), hydroxypropylmethylcellulose (Metolose (registered trademark) 60SH-4000, 60SH-10000, 65SH-4000, 65SH-15000, 90SH-15000 manufactured by Shin-Etsu Chemical Co., Ltd.), hydroxyethylmethylcellulose (Metolose (registered trademark) SEB-4000 manufactured by Shin-Etsu Chemical Co., Ltd.), and carboxymethylcellulose (Sunrose (registered trademark) manufactured by Nippon Paper Industries Co., Ltd.).

The total content of the cellulose derivative (component (C)) in the stripping agent composition is from 0.1% by mass to 10% by mass, preferably from 0.3% by mass to 5% by mass, and more preferably from 0.5% by mass to 4% by mass, based on the total amount of the stripping agent composition, from the viewpoints of coatability and emulsion stability, and of reducing the risk of fire and health hazards.

The mass ratio (C/(A+B)) of the cellulose derivative (component (C)) to the total amount of water (component (B)) and phenethyl alcohol and phenoxyethanol (component (A)) is preferably 0.1/100 to 10/100, more preferably 0.3/100 to 5/100, and even more preferably 0.5/100 to 4/100.

The total content of components (A), (B) and (C) in the stripping agent composition of the present invention is preferably 80% by mass or more, more preferably 85% by mass or more, and even more preferably 90% by mass or more, from the viewpoints of coatability and emulsion stability, and of reducing the risk of fire and health hazards.

<Other ingredients>
The stripping composition of the present invention may further contain components other than those described above, provided that the effects of the present invention are not impaired.

<Evaporation Inhibitor (Component (D))>
The stripping composition of the present invention may contain, and preferably contains, an evaporation inhibitor.
The inventors have found that although the risk of ignition is low when the aqueous stripping composition is prepared and immediately after application, as the water evaporates over time, the stripping composition may be transformed into a combustible substance after a certain period of time, which may ignite and burn. By including an evaporation inhibitor in the stripping composition of the present invention, the evaporation of water can be continuously suppressed after application, and the risk of fire during the coating film stripping process can be significantly reduced.

The evaporation inhibitor is one or more selected from the group consisting of glycerin, trimethylolpropane, pentaerythritol, diglycerin, sorbitol, aqueous wax emulsion, paraffin wax, liquid paraffin, microcrystalline, and beeswax. Of these evaporation inhibitors, at least one selected from the group consisting of aqueous wax emulsion, paraffin wax, and liquid paraffin is preferred.

Specific examples of evaporation inhibitors include water-based wax emulsions (AQUACER 497, 530, 531, 539, and 541, manufactured by BYK Japan KK), wax emulsions (MYW-135E and HT-P135, manufactured by Maruyoshi Chemical Co., Ltd.), wax emulsions (EMUSTAR-0136, manufactured by Nippon Seiro Co., Ltd.), paraffin wax (MAW-9088, manufactured by Nippon Seiro Co., Ltd.), and liquid paraffin (BYK-S 782, manufactured by BYK Japan KK).

The total content of the evaporation inhibitor (component (D)) in the stripper composition is preferably 0.1% by mass or more and 10% by mass or less, more preferably 0.4% by mass or more and 8% by mass or less, and even more preferably 0.5% by mass or more and 5% by mass or less, based on the total amount of the stripper composition, from the viewpoint of further suppressing water evaporation and significantly reducing the risk of fire during the coating stripping process.

When component (D) is contained, the mass ratio (D/(A+B)) of the evaporation inhibitor (component (D)) to the total amount of water (component (B)) and phenethyl alcohol and phenoxyethanol (component (A)) is preferably 0.1/100 to 10/100, more preferably 0.4/100 to 8/100, and even more preferably 0.5/100 to 5/100.

When component (D) is contained, the mass ratio (D/B) of the evaporation inhibitor (component (D)) to water (component (B)) is preferably 0.001 to 1, more preferably 0.005 to 0.5, and even more preferably 0.01 to 0.1.

When component (D) is contained, the total content of components (A), (B), (C) and (D) in the stripping agent composition of the present invention is preferably 90% by mass or more, more preferably 95% by mass or more, and even more preferably 97% by mass or more, from the viewpoints of coatability and emulsion stability, and of reducing the risk of fire and health hazards.

<Inorganic thickener>
The stripping composition of the present invention may contain an inorganic thickener.
The inorganic thickener can be selected from bentonite, fumed silica, and the like. Specific examples include bentonite ("Kunibis" 110, 127 manufactured by Kunimine Kogyo Co., Ltd.), quaternary ammonium salt modified bentonite ("Esben" NZ, NTO manufactured by Hojun Co., Ltd.), and fumed silica ("AEROSIL (registered trademark)" 130, 200, 380, R812, R974, R976 manufactured by Nippon Aerosil Co., Ltd.).
From the viewpoint of improving the coatability, the total content of the inorganic thickener in the release agent composition is preferably from 0.02% by mass to 4% by mass, more preferably from 0.05% by mass to 3% by mass, and even more preferably from 0.1% by mass to 2% by mass, based on the total amount of the release agent composition.

<pH>
The stripping composition of the present invention preferably has a pH in the range of 5 to 9. When the pH is close to neutral, ie, 5 to 9, the skin corrosiveness and irritation are low, and the risk of health damage to workers can be reduced. In addition, the risk of corrosion of the support matrix of the coating film to be stripped is also low.

<Emulsified state>
The stripping agent composition of the present invention is preferably in an emulsified state, that is, by emulsifying water and phenethyl alcohol and/or phenoxyethanol and by uniformly dispersing the cellulose derivative in a compatible manner, it is possible to suppress water evaporation due to phase separation, and thus to reduce the risk of fire and health hazards.

<Nonflammability>
The stripping composition of the present invention is water-based and, because it is in an emulsified state, it is possible to suppress the evaporation and dissipation of water, and therefore it is non-flammable. Specifically, as evaluated in the examples, 1 kg/ ^m2 of the stripping composition does not ignite even when a pilot flame is brought close to it for 10 seconds after it is left at room temperature for 48 hours.

The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples in any way.

The compounds used in the examples are as follows.
<Component (A): Phenethyl Alcohol, Phenoxyethanol>
Phenethyl alcohol: Sigma-Aldrich Japan, LLC. Phenoxyethanol: Sigma-Aldrich Japan, LLC.

<Component (A'): Benzyl Alcohol>
Benzyl alcohol: Sigma-Aldrich Japan LLC

<Component (C): Cellulose Derivative>
HPMC1: Hydroxypropyl methylcellulose, "Metolose 60SH-4000", manufactured by Shin-Etsu Chemical Co., Ltd. HPMC2: Hydroxypropyl methylcellulose, "Metolose 60SH-10000", manufactured by Shin-Etsu Chemical Co., Ltd. HPC: Hydroxypropyl cellulose, "NISSO HPC VH", manufactured by Nippon Soda Co., Ltd. MC: Methylcellulose, "Metolose SM-8000", manufactured by Shin-Etsu Chemical Co., Ltd. EC: Ethyl cellulose, "ETHOCEL STD-200", manufactured by Dow Chemical Co. HEC: Hydroxyethyl cellulose, "Natrosol 250HHR", manufactured by Ashland Japan Co., Ltd.

<Component (D): Evaporation Inhibitor>
MYW-135E: Paraffin wax emulsion, "MYW-135E", manufactured by Maruyoshi Chemical Co., Ltd.
EMUSTAR-0136: Paraffin wax emulsion, "EMUSTAR-0136", manufactured by Nippon Seiro Co., Ltd.
AQUACER 497: Paraffin wax emulsion, "AQUACER 497", manufactured by BYK Japan Co., Ltd.
BYK-S 782: Liquid paraffin, "BYK-S 782", manufactured by BYK Japan Co., Ltd.

Examples 1 to 20, Comparative Examples 1 to 9
Each sample was placed in a 200 mL beaker in the composition (mass ratio) shown in the table, and stirred with a stirrer for a sufficient time until the mixture was homogenized to prepare a stripping composition. The obtained stripping composition was evaluated as follows.

1. Thickening Before and after the addition of the cellulose derivative to a mixture of water and alcohol, the presence or absence of thickening was visually observed and evaluated according to the following criteria. Note that in Comparative Examples 4 to 9, thickening was not evaluated because no cellulose derivative was added (shown as "-" in the table).
○: Viscosity increases ×: Viscosity does not increase

2. Viscosity The viscosity of the release agent composition was measured using a BM type viscometer (manufactured by Tokyo Keiki Co., Ltd.) and a No. 4 rotor at a rotation speed of 6 rpm and a temperature of 25°C.

3. Emulsion Stability The emulsion state of the stripping composition when stored in a container was visually observed after leaving it to stand at room temperature for 24 hours, and evaluated according to the following criteria.
○: The liquid is milky white and maintains a uniform emulsified state. △: The liquid has milky white parts, but is partially separated and maintains a partially emulsified state. ×: The liquid is clear, separated, and not emulsified.

4. pH
The pH of the stripping composition was measured visually using pH test paper.

5. Coating Ability The release agent composition was applied to a SUS plate leaned against an angle of about 75°, and the presence or absence of coating was visually observed and evaluated according to the following criteria.
○: Adheres to the skin △: Adheres to the skin but drips easily ×: Does not adhere to the skin

6. Drying Property The release agent composition was applied to a SUS plate and allowed to stand at room temperature for 24 hours, after which the drying state of the release agent composition was visually observed and evaluated according to the following criteria.
○: The liquid remains milky white and does not dry. △: It dries slightly, but some milky white parts remain in the liquid. ×: It dries, the water evaporates, and the liquid becomes transparent.

7. Ignition resistance (0hr)
Immediately after placing the stripping composition on the small plate at 1 kg/ ^m2 , a pilot flame was placed close to the plate for 10 seconds, and the presence or absence of ignition was visually observed and evaluated according to the following criteria.
○: Does not ignite ×: Will ignite

8. Ignition resistance (24hr, 48hr)
1 kg/ ^m2 of the stripping composition was placed on a small plate, and after leaving it at room temperature for 24 or 48 hours, a pilot flame was placed close to it for 10 seconds, and the presence or absence of ignition was visually observed, and the composition was evaluated according to the following criteria: If no ignition occurred after leaving it for 48 hours, the composition passed the test.
○: Does not ignite ×: Will ignite

9. Strippability The stripper composition was applied at 1 kg/ ^m2 to a phthalic acid coating (undercoat: rust prevention, middle coat: phthalic acid, top coat: phthalic acid) and allowed to stand at room temperature for 24 hours, after which the coating was visually observed for strippability and evaluated according to the following criteria. Note that in Comparative Examples 4 to 9, the compositions separated into two layers when stirring was stopped, making it difficult to evaluate the strippability of the compositions, and therefore the strippability was not evaluated (shown as "-" in the table).
○: Peeled off △: Partially peeled off ×: No peeling

In Comparative Examples 1 to 3, which used benzyl alcohol, evaporation of water was observed after standing for 24 hours. In Comparative Examples 1 and 2, which contained a small amount of water, the effect of water evaporation was early, and ignition occurred after 24 hours. In Comparative Example 3, which contained a large amount of water, ignition resistance was good even after 24 hours of water evaporation, but ignition occurred after 48 hours.
In Comparative Examples 4 to 9, the water and organic solvent were not emulsified and separated into two layers, and the water evaporated after 24 hours of standing. In addition, the ignition resistance was good at 0 hours, but ignition occurred after 24 hours. This is thought to be because in Comparative Examples 4 to 9, the stripping agent composition placed on the small plate separated into two phases, with the water layer located on the outer surface side, and it did not ignite immediately after being placed on the small plate (0 hours), but ignited after 24 hours because the water evaporated.
Compared with these Comparative Examples, all of the Examples have good emulsion stability and good ignition resistance, and can suppress water evaporation and reduce the risk of fire and health damage.

Reference examples 1 to 4
As described in this specification, the health damage risks of acute toxicity (inhalation: vapor) and specific target organ toxicity (single exposure) are lower for phenoxyethanol and phenethyl alcohol than for benzyl alcohol. Furthermore, acute toxicity (oral) will be evaluated.
For the compositions shown in Table 2, the acute toxicity (oral) of each composition was calculated according to the following formula (additive formula) specified in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS). The acute toxicity estimate ATEi of each component was obtained by referencing the 50% lethal dose ( _LD50 ) value from the Ministry of Health, Labour and Welfare's Workplace Safety Site website and the safety data sheet (SDS) of Sigma-Aldrich Japan LLC. The higher the acute toxicity estimate (ATEmix) of a composition, the lower its toxicity and the lower the risk of health damage.

The results in Table 2 show that phenoxyethanol and phenethyl alcohol have lower acute toxicity (oral) and a lower risk of health problems than benzyl alcohol.

The stripping agent composition of the present invention has good ignition resistance and low fire risk. It also has good emulsion stability, suppresses water evaporation, and reduces the risk of fire and health hazards. It can exhibit stripping properties equal to or greater than those of aqueous stripping agents containing benzyl alcohol. Furthermore, when the stripping agent composition of the present invention contains a specified amount of an evaporation inhibitor, it can further suppress water evaporation, and significantly reduce the risk of fire and health hazards.

Claims (5)

Component (A): phenethyl alcohol and/or phenoxyethanol,
Component (B): water,
A release agent composition comprising: component (C): at least one cellulose derivative; and component (D): at least one evaporation inhibitor selected from the group consisting of an aqueous wax emulsion, paraffin wax, and liquid paraffin,
The content of the component (C) in the release agent composition is 0.1% by mass or more and 10% by mass or less,
The stripping agent composition has a benzyl alcohol content of less than 10% by mass, and the stripping agent composition is in an emulsified state . 2. The stripping composition according to claim 1 , wherein the content of the evaporation inhibitor in the stripping composition is from 0.1% by mass to 10% by mass. 3. The stripping agent composition according to claim 1 , wherein the cellulose derivative is at least one selected from the group consisting of methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl methyl cellulose and carboxymethyl cellulose. The stripping composition according to any one of claims 1 to 3 , wherein the content of the component (A) in the stripping composition is 10% by mass or more and 90% by mass or less. The stripping composition according to any one of claims 1 to 4 , wherein the content of the component (B) in the stripping composition is 10% by mass or more and 90% by mass or less.