Release agent composition

Abstract

To provide a release agent composition that reduces the risk of a fire and a health problem in an aqueous release agent comprising benzyl alcohol, and exhibits releasability equal to or better than that of the aqueous release agent comprising benzyl alcohol.SOLUTION: A release agent composition comprises component (A): phenethyl alcohol and / or phenoxy ethanol, component (B): water, and component (C): at least one cellulose derivative. In the release agent composition, the content of the component (C) is 0.1 mass% or more and 10 mass% or less. In the release agent composition, the content of the benzyl alcohol is less than 10 mass%.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a stripping agent composition for stripping and removing old paint films on steel structures, vehicles, aircraft, buildings, etc.

Background Art

[0002] As a method of repainting the paint film (old paint film) formed on the surface of a steel structure, vehicle, aircraft, building, etc., there is a method of stripping and removing the old paint film and applying a new paint. Examples of methods for stripping and removing old paint films include physical methods such as sanding, blasting, and high-pressure treatment, or chemical methods using chemicals or solvents. In recent years, from the viewpoints of problems such as dust scattering and substrate damage, risks such as fires and health hazards, and environmental considerations, water-based coating-type paint film stripping agents (aqueous stripping agents) have been used. For example, Patent Document 1 aims to provide a water-based coating-type paint film stripping composition that reduces risks such as fires and health hazards and can exhibit stripping properties equal to or better than those of solvent-based stripping agents, and discloses a paint film stripping composition having a pH in the range of 5 to 9 and containing water, benzyl alcohol, and at least one cellulose derivative.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Aqueous release agents containing benzyl alcohol have excellent releasability, but the occurrence of fires and poisoning incidents caused by release agents has been pointed out. According to the notice "Regarding the prevention of industrial accidents in the paint peeling work using release agents" (No. 0817 Kianka Hatsu of August 17, Reiwa 2, partially revised by No. 1019 Kianka Hatsu of October 19, Reiwa 2) issued by the Safety and Health Department of the Labor Standards Bureau, Ministry of Health, Labor and Welfare, in bridge construction, when removing the paint film with a release agent containing benzyl alcohol, the occurrence of fires and serious poisoning incidents due to inhalation have been reported. Benzyl alcohol, which is the causative substance, is a chemical used in water-based or alcohol-based release agents. Although benzyl alcohol is not a regulated substance but has strong harmful properties, measures should be taken to reduce the exposure concentration of workers, such as installing an exhaust device, and furthermore, workers are required to use a supply air mask, protective goggles, and impermeable protective clothing, protective gloves, and protective boots. Therefore, regarding the handling of benzyl alcohol-containing release agents, while measures to avoid health hazards to workers are necessary, the increase in the burden on workers and the deterioration of work efficiency have become major issues.

[0005] Patent Document 1 proposes that the fire risk can be reduced by the release composition containing water. However, in reality, as described above, fires and poisoning incidents have occurred due to the use of aqueous release agents containing benzyl alcohol.

[0006] Therefore, the problem to be solved by the present invention is to provide a release agent composition that reduces the risks of fire and health hazards in aqueous release agents containing benzyl alcohol and exhibits releasability equal to or higher than that of aqueous release agents containing benzyl alcohol.

Means for Solving the Problem

[0007] In view of such circumstances, as a result of intensive studies, the present inventors have found that the above problems can be solved by using phenethyl alcohol and / or phenoxyethanol instead of benzyl alcohol in the release agent composition and using a predetermined amount of at least one cellulose derivative, and have thus completed the present invention.

[0008] That is, the present invention relates to the following. <1> Component (A): phenethyl alcohol and / or phenoxyethanol, Component (B): water, and Component (C): at least one cellulose derivative A release agent composition containing: 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 release agent composition is less than 10% by mass. <2> The release agent composition according to <1> above, wherein the release agent composition is in an emulsified state. <3> The release agent composition according to <1> or <2> above, further containing an evaporation inhibitor as component (D). <4> The release agent composition according to <3> above, wherein the evaporation inhibitor is at least one selected from the group consisting of aqueous wax emulsions, paraffin waxes, and liquid paraffins. <5> The release agent composition according to <3> or <4> above, wherein the content of the evaporation inhibitor in the release agent composition is 0.1% by mass or more and 10% by mass or less. <6> The release agent composition according to any one of <1> to <5> above, 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 release agent composition according to any one of <1> to <6> above, wherein the content of the component (A) in the release agent composition is 10% by mass or more and 90% by mass or less. <8> The release agent composition according to any one of <1> to <7> above, wherein the content of the component (B) in the release agent composition is 10% by mass or more and 90% by mass or less.

Advantages of the Invention

[0009] The release agent composition of the present invention can reduce the risks of fire and health hazards in the aqueous release agent containing benzyl alcohol, and can exhibit release properties equal to or higher than those of the aqueous release agent containing benzyl alcohol.

Modes for Carrying Out the Invention

[0010] Hereinafter, modes for carrying out the present invention (hereinafter simply referred to as "the present embodiment") will be described in detail. The following present embodiment is an exemplification for explaining the present invention, and is not intended to limit the present invention to the following content. The present invention can be appropriately modified and implemented within the scope of its gist. In this specification, the description of "XX to YY" means "XX or more and YY or less".

[0011] The release agent composition of the present invention is Component (A): Phenethyl alcohol and / or phenoxyethanol, Component (B): Water, and Component (C): At least one cellulose derivative a release agent composition containing wherein the content of the component (C) in the release agent composition is 0.1% by mass or more and 10% by mass or less, and the content of benzyl alcohol in the release agent composition is less than 10% by mass.

[0012] <Phenethyl alcohol and / or phenoxyethanol (Component (A))> The release agent composition of the present invention contains phenethyl alcohol and / or phenoxyethanol. According to the "Globally Harmonized System of Classification and Labelling of Chemicals (GHS)", benzyl alcohol is classified as "Category 3" regarding acute toxicity (inhalation: vapor) and is judged to be "toxic when inhaled". On the other hand, phenethyl alcohol and phenoxyethanol are also known as cosmetic ingredients and are not subject to classification in the GHS classification. In addition, the damage to the organs (central nervous system, kidneys) of the specific target organ toxicity (single exposure) of phenethyl alcohol is one level lower than that of benzyl alcohol. Therefore, phenethyl alcohol and phenoxyethanol have a lower risk and danger to health hazards compared to benzyl alcohol. By using phenethyl alcohol and / or phenoxyethanol instead of benzyl alcohol, the risks of fire and health hazards in the aqueous release agent containing benzyl alcohol can be reduced.

[0013] Phenethyl alcohol and phenoxyethanol may be used in combination. The ratio of phenethyl alcohol to phenoxyethanol when used in combination is not particularly limited.

[0014] From the viewpoint of releasability, the total content of phenethyl alcohol and phenoxyethanol (component (A)) in the release agent composition is preferably 10% by mass or more, more preferably 20% by mass or more, still more preferably 30% by mass or more, and still more preferably 40% by mass or more with respect to the total amount of the release agent composition. And from the viewpoint of reducing the risks of fire and health hazards, it is preferably 90% by mass or less, more preferably 80% by mass or less, and still more preferably 75% by mass or less with respect to the total amount of the release agent composition.

[0015] From the viewpoint of reducing the risk of health hazards, phenoxyethanol is more preferable than phenethyl alcohol. From the viewpoint of further reducing the risk of health hazards, the content of phenethyl alcohol in the release agent composition is preferably 50% by mass or less, more preferably 40% by mass or less, and still more preferably 30% by mass or less with respect to the total amount of the release agent composition.

[0016] <Benzyl alcohol> In the release agent composition of the present invention, the content of benzyl alcohol in the release agent composition is less than 10% by mass. Therefore, the risks of fire and health hazards caused by benzyl alcohol can be reduced. From such a viewpoint, the content of benzyl alcohol in the release agent composition of the present invention is preferably less than 5% by mass, more preferably less than 1% by mass, still more preferably less than 0.5% by mass. It is more preferable that the release agent composition of the present invention is substantially free of benzyl alcohol, and still more preferable that it contains no benzyl alcohol at all. Here, "substantially" means that it may be included as long as the effects of the present invention are achieved.

[0017] <Water (Component (B))> The release agent composition of the present invention contains water. By being an aqueous release agent composition, the risks of fire and health hazards that can occur in a solvent-based release agent composition can be reduced.

[0018] From the viewpoint of reducing the risks of fire and health hazards, the content of water (Component (B)) in the release agent composition is preferably 10% by mass or more, more preferably 20% by mass or more, still more preferably 25% by mass or more, with respect to the total amount of the release agent composition; and from the viewpoints of releasability and the risk of compositional changes due to evaporation of water, it is preferably 90% by mass or less, more preferably 80% by mass or less, still more preferably 70% by mass or less, still more preferably 60% by mass or less, with respect to the total amount of the release agent composition.

[0019] 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, still more preferably 30 / 70 to 75 / 25, still more preferably 40 / 60 to 70 / 30.

[0020] <Cellulose derivative (Component (C))> The release agent composition of the present invention contains at least one cellulose derivative. By containing a cellulose derivative, the release agent composition of the present invention exhibits an emulsifying action, emulsifies water and phenethyl alcohol and / or phenoxyethanol, suppresses the evaporation and volatilization of water, and thus can reduce the risks of fire and health hazards. Further, in the release agent composition of the present invention, the cellulose derivative acts as a thickening agent. By containing a cellulose derivative as a thickening agent, the release agent composition of the present invention exhibits an emulsifying action and has a predetermined viscosity. As a result, the release agent composition is easy to apply and can prevent dripping after application.

[0021] As the cellulose derivative, at least one selected from the group consisting of alkyl cellulose, hydroxyalkyl cellulose, and carboxyalkyl cellulose is preferable. From the viewpoint of film formation, the number of carbon atoms of the alkyl group in alkyl cellulose, hydroxyalkyl cellulose, and carboxyalkyl cellulose is preferably 1 to 8, more preferably 1 to 4, and still more preferably 1 to 3.

[0022] More preferably, 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 is used as the cellulose derivative, and still more preferably, at least one selected from the group consisting of methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, and hydroxypropyl methyl cellulose is used.

[0023] The viscosity of the cellulose derivative, as the viscosity value of a 2 mass% aqueous solution at 20°C, is preferably 100 mPa·s or more, more preferably 150 mPa·s or more, still more preferably 200 mPa·s or more, and preferably 15000 mPa·s or less, more preferably 10000 mPa·s or less, still more preferably 6000 mPa·s or less.

[0024] Specific examples of the cellulose derivative include methyl cellulose ("Metrose (registered trademark)" SM-4000, SM-8000 manufactured by Shin-Etsu Chemical Co., Ltd.), ethyl cellulose ("ETHOCEL (registered trademark)" STD-200 manufactured by The Dow Chemical Company), hydroxyethyl cellulose ("NATROSOL (registered trademark)" 250HHR, 250HR manufactured by Ashland Japan Co., Ltd.), hydroxypropyl cellulose ("NISSO HPC" VH, H, M manufactured by Nippon Soda Co., Ltd.), hydroxypropyl methyl cellulose ("Metrose (registered trademark)" 60SH-4000, 60SH-10000, 65SH-4000, 65SH-15000, 90SH-15000 manufactured by Shin-Etsu Chemical Co., Ltd.), hydroxyethyl methyl cellulose ("Metrose (registered trademark)" SEB-4000 manufactured by Shin-Etsu Chemical Co., Ltd.), carboxymethyl cellulose ("Sunrose (registered trademark)" manufactured by Nippon Paper Industries Co., Ltd.), and the like.

[0025] From the viewpoints of coatability and emulsion stability and reduction of fire and health hazard risks, the total content of the cellulose derivative (component (C)) in the release agent composition is 0.1% by mass or more and 10% by mass or less, preferably 0.3% by mass or more and 5% by mass or less, more preferably 0.5% by mass or more and 4% by mass or less, based on the total amount of the release agent composition.

[0026] 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, still more preferably 0.5 / 100 to 4 / 100.

[0027] From the viewpoints of coatability and emulsion stability and reduction of fire and health hazard risks, the total content of components (A), (B) and (C) in the release agent composition of the present invention is preferably 80% by mass or more, more preferably 85% by mass or more, still more preferably 90% by mass or more.

[0028] <Other components> The release agent composition of the present invention may further contain components other than those described above, as long as the effects of the present invention are not inhibited.

[0029] <Evaporation inhibitor (component (D))> The release agent composition of the present invention may contain an evaporation inhibitor, and it is preferable to contain it. The inventors of the present invention have found that although the risk of ignition is low during the preparation of the aqueous release agent composition and immediately after coating, as water evaporates over time, the release agent composition denatures into a combustible substance after a certain period of time and can catch fire and burn. By containing an evaporation inhibitor in the release agent composition of the present invention, the evaporation of water can be continuously suppressed after coating, and the fire risk during the coating peeling operation process can be significantly reduced.

[0030] As the evaporation inhibitor, one or more are selected from glycerin, trimethylolpropane, pentaerythritol, diglycerin, sorbitol, aqueous wax emulsion, paraffin wax, liquid paraffin, microcrystalline, and beeswax. Among these evaporation inhibitors, at least one selected from the group consisting of aqueous wax emulsion, paraffin wax, and liquid paraffin is preferable.

[0031] Specific examples of the evaporation inhibitor include aqueous wax emulsion ("AQUACER" 497, 530, 531, 539, 541 manufactured by BYK-Chemie Japan Co., Ltd.), wax emulsion ("MYW-135E", "HT-P135" manufactured by Maruhiro Chemical Co., Ltd.), wax emulsion ("EMUSTAR-0136" manufactured by Nippon Seiko Co., Ltd.), paraffin wax ("MAW-9088" manufactured by Nippon Seiko Co., Ltd.), liquid paraffin ("BYK-S 782" manufactured by BYK-Chemie Japan Co., Ltd.), etc.

[0032] From the viewpoint of further suppressing the evaporation of water and significantly reducing the fire risk during the coating peeling operation process, the total content of the evaporation inhibitor (Component (D)) in the release agent 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 still more preferably 0.5% by mass or more and 5% by mass or less based on the total amount of the release agent composition.

[0033] When Component (D) is included, the mass ratio of the evaporation inhibitor (Component (D)) to the total amount of water (Component (B)) and phenethyl alcohol and phenoxyethanol (Component (A)), (D / (A + B)), is preferably 0.1 / 100 to 10 / 100, more preferably 0.4 / 100 to 8 / 100, and still more preferably 0.5 / 100 to 5 / 100.

[0034] When Component (D) is included, the mass ratio of the evaporation inhibitor (Component (D)) to water (Component (B)), (D / B), is preferably 0.001 to 1, more preferably 0.005 to 0.5, and still more preferably 0.01 to 0.1.

[0035] When Component (D) is included, the total content of Components (A), (B), (C), and (D) in the release agent composition of the present invention is preferably 90% by mass or more, more preferably 95% by mass or more, and still more preferably 97% by mass or more from the viewpoints of coatability and emulsion stability and reduction of fire and health hazard risks.

[0036] <Inorganic thickener> The release agent composition of the present invention may contain an inorganic thickener. Examples of the inorganic thickener include bentonite, fumed silica, etc., and specifically, bentonite ("Kunibis" 110, 127 manufactured by Kunimine Industries Co., Ltd.), quaternary ammonium salt-modified bentonite ("Esben" NZ, NTO manufactured by Hoejun Co., Ltd.), fumed silica ("AEROSIL (registered trademark)" 130, 200, 380, R812, R974, R976 manufactured by Nippon Aerosil Co., Ltd.), etc. From the viewpoint of improving coatability, the total content of the inorganic thickener in the release agent composition is preferably 0.02% by mass or more and 4% by mass or less, more preferably 0.05% by mass or more and 3% by mass or less, still more preferably 0.1% by mass or more and 2% by mass or less with respect to the total amount of the release agent composition.

[0037] <ph> The release agent composition of the present invention preferably has a pH in the range of 5 or more and 9 or less. If the pH is near neutrality in the range of 5 or more and 9 or less, the skin corrosiveness and irritation are low, and the risk of health damage to workers can be reduced. Also, the risk of corrosion of the support matrix of the coating film to be peeled is low.

[0038] <Emulsion state> The release agent composition of the present invention is preferably in an emulsion state. That is, by emulsifying water and phenethyl alcohol and / or phenoxyethanol, and dissolving and uniformly dispersing a cellulose derivative, evaporation and volatilization of water due to phase separation can be suppressed, and thus the risks of fire and health damage can be reduced.

[0039] <Non-flammability> The release agent composition of the present invention is water-based and, since it is in an emulsion state, evaporation and volatilization of water can be suppressed, so it is non-flammable. Specifically, as evaluated in the examples, even when a kindling flame is brought close for 10 seconds after standing 1 kg / m of the release agent composition at room temperature for 48 hours, it does not catch fire. 2

Examples

[0040] Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples at all.

[0041] The compounds used in the examples are as follows. <Component (A): Phenethyl alcohol, phenoxyethanol> Phenethyl alcohol: Manufactured by Sigma-Aldrich Japan K.K. Phenoxyethanol: Manufactured by Sigma-Aldrich Japan K.K.

[0042] <Component (A'): Benzyl alcohol> Benzyl alcohol: Manufactured by Sigma-Aldrich Japan K.K.

[0043] <Component (C): Cellulose derivative> HPMC1: Hydroxypropylmethylcellulose, "Methocel 60SH-4000", manufactured by Shin-Etsu Chemical Co., Ltd. HPMC2: Hydroxypropylmethylcellulose, "Methocel 60SH-10000", manufactured by Shin-Etsu Chemical Co., Ltd. HPC: Hydroxypropylcellulose, "Nisso HPC VH", manufactured by Nippon Soda Co., Ltd. MC: Methylcellulose, "Methocel SM-8000", manufactured by Shin-Etsu Chemical Co., Ltd. EC: Ethylcellulose, "Ethocel STD-200", manufactured by Dow Chemical Company HEC: Hydroxyethylcellulose, "Natrosol 250HHR", manufactured by Ashland Japan Co., Ltd.

[0044] <Component (D): Evaporation inhibitor> MYW-135E: Paraffin wax emulsion, "MYW-135E", manufactured by Marufang 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 Big Chemie Japan Co., Ltd. BYK-S 782: Liquid paraffin, "BYK-S 782", manufactured by Big Chemie Japan Co., Ltd.

[0045] Examples 1 to 20, Comparative Examples 1 to 9 Into a 200 mL beaker, each sample was put in the composition (mass ratio) shown in the table, and stirred with a stirrer for a sufficient time until it became uniform to prepare a release agent composition. The following evaluations were performed on the obtained release agent composition.

[0046] 1. Thickening property The presence or absence of thickening before and after adding a cellulose derivative to a mixture of water and alcohol was visually observed and evaluated according to the following criteria. In Comparative Examples 4 to 9, since no cellulose derivative was added, the thickening property was not evaluated (described as "-" in the table). ○: Thickens ×: No thickening

[0047] 2. Viscosity The viscosity of the release agent composition was measured using a BM viscometer (manufactured by Tokyo Keiki Co., Ltd.) and a No. 4 rotor under the conditions of a rotational speed of 6 rpm and a temperature of 25°C.

[0048] 3. Emulsion stability The emulsion state of the release agent composition during storage in a container was visually observed after standing at room temperature for 24 hours and evaluated according to the following criteria. ○: The liquid is milky white and maintains a uniform emulsion state. △: The liquid has a milky white part but is partially separated, and partially maintains the emulsion state. ×: The liquid is transparent, separated, and not emulsified.

[0049] 4. pH The pH of the release agent composition was visually measured using pH test paper.

[0050] 5. Coating property The release agent composition was applied to a SUS plate leaned at about 75°, and the presence or absence of coating was visually observed and evaluated according to the following criteria. ○: Coats. △: Coats but is prone to dripping. ×: Does not coat.

[0051] 6. Drying property The release agent composition was applied to a SUS plate, and the drying state of the release agent composition after standing at room temperature for 24 hours was visually observed and evaluated according to the following criteria. ○: The liquid remains milky white and does not dry. △: Slightly dries, but a milky white part of the liquid remains partially. ×: Dries and water evaporates, and the liquid becomes transparent.

[0052] 7. Fire resistance (0 hr) For 1 kg / m of the release agent composition immediately after being placed in a small dish 2 a kindling flame was brought close for 10 seconds, and the presence or absence of ignition was visually observed and evaluated according to the following criteria. ○: Does not catch fire ×: Catches fire

[0053] 8. Fire resistance (24 hr, 48 hr) 1 kg / m of the release agent composition placed in a small dish 2 After standing at room temperature for 24 hours or 48 hours, a pilot flame was brought close for 10 seconds, and the presence or absence of ignition was visually observed and evaluated according to the following criteria. If it does not catch fire after standing for 48 hours, it is considered qualified. ○: Does not catch fire ×: Catches fire

[0054] 9. Peelability 1 kg / m of the release agent composition was applied to a phthalic acid coating film (undercoat: rust prevention, intermediate coat: phthalic acid, top coat: phthalic acid). 2 After standing at room temperature for 24 hours, the peelability of the coating film was visually observed and evaluated according to the following criteria. In Comparative Examples 4 to 9, since two-layer separation occurred when stirring was stopped, it was difficult to evaluate the peelability as a composition, and the peelability was not evaluated (indicated as "-" in the table). ○: Peels off △: Partially peels off ×: Does not peel off

[0055]

Table 1-1

[0056]

Table 1-2

[0057]

Table 1-3

[0058] In Comparative Examples 1 to 3 using benzyl alcohol, evaporation of water was observed after standing for 24 hours. In Comparative Examples 1 and 2 with a low water content, the influence of water evaporation was early, and ignition occurred after 24 hours. In Comparative Example 3 with a high water content, although water evaporated at 24 hours, the fire resistance was good, but ignition occurred after 48 hours. In Comparative Examples 4 to 9, water and the organic solvent were separated into two layers without emulsification, and water evaporated after standing for 24 hours. Also, the fire resistance was good at 0 hour, but ignition occurred after 24 hours. This is because in Comparative Examples 4 to 9, the release agent composition taken in the dish was phase-separated and the water layer was located on the outer surface side. It did not ignite immediately after being taken in the dish (0 hour), but it is considered that ignition occurred after 24 hours because water evaporated thereafter. Compared with these comparative examples, all of the examples have good emulsion stability and good fire resistance, suppress the evaporation of water, and can reduce the risks of fire and health hazards.

[0059] Reference Examples 1 to 4 As described in this specification, the health hazard 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) is evaluated. Regarding the compositions shown in Table 2, the acute toxicity (oral) of each composition was calculated according to the following formula (additive formula) defined in the "Globally Harmonized System of Classification and Labelling of Chemicals (GHS)". The estimated acute toxicity value ATEi of each component was obtained from the 50% lethal dose (LD 50 ) value from the website "Occupational Safety Site" of the Ministry of Health, Labour and Welfare and the safety data sheet (SDS) of Sigma-Aldrich Japan Co., Ltd. A higher numerical value of the estimated acute toxicity value (ATEmix) of the composition indicates lower toxicity and lower health hazard risk.

[0060]

Number

[0061]

Table 2

[0062] From the results in Table 2, it can be seen that phenoxyethanol and phenethyl alcohol have lower acute toxicity (oral) and lower health hazard risks compared to benzyl alcohol.

Industrial Applicability

[0063] The release agent composition of the present invention has good fire resistance and a low fire risk. Also, it has good emulsion stability, suppresses the evaporation of water, and can reduce the risks of fire and health hazards. And it can exhibit a release property equal to or better than that of an aqueous release agent containing benzyl alcohol. Furthermore, when the release agent composition of the present invention contains a predetermined amount of an evaporation inhibitor, the evaporation of water can be more effectively suppressed, and the risks of fire and health hazards can be significantly reduced.< / ph>

Claims

**Claim 1** Component (A): phenethyl alcohol and / or phenoxyethanol, Component (B): water, Component (C): at least one cellulose derivative, and Component (D): at least one selected from the group consisting of an aqueous wax emulsion, paraffin wax, and liquid paraffin as an evaporation inhibitor A release agent composition containing: 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 release agent composition is less than 10% by mass, and the release agent composition is in an emulsified state. A release agent composition. **Claim 2** The content of the evaporation inhibitor in the release agent composition is 0.1% by mass or more and 10% by mass or less. The release agent composition according to claim 1. **Claim 3** 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 release agent composition according to claim 1 or 2. **Claim 4** The content of the component (A) in the release agent composition is 10% by mass or more and 90% by mass or less. The release agent composition according to any one of claims 1 to 3. **Claim 5** The content of the component (B) in the release agent composition is 10% by mass or more and 90% by mass or less. The release agent composition according to any one of claims 1 to 4.

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