JPH10265716A - Composition for treating sealing material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a composition for treating a sealing material capable of preventing a crack without being affected by the quality of a material in the vicinity of the sealing material and improving a soil preventing property, an endurance and an appearance by containing an aliphatic hydrocarbon-based solvent and a polymer containing fluorine and dissolvable therein. SOLUTION: This composition for treating a sealing material contains (A) an aliphatic hydrocarbon-based solvent containing >=80 wt.% aliphatic hydrocarbon and having 80-300 deg.C boiling point and (B) a polymer dissolvable in the component (A) and containing fluorine (the fluorine content is preferably 20-35 wt.%) such as a polymer containing an acrylate polymerization unit containing a polyfluoroalkyl group or a methacrylate polymerization unit containing the polyfluoroalkyl group. Further, the blending ratio of the components (A) with (B) is 85-99.9 pt.wt. component (A) and 0.1-15 pt.wt. component (B) based on 100 pts.wt. composition, and it is preferable to treat the surface of the sealing agent with the composition for treating the sealing material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a composition for treating a sealing material.

[0002]

2. Description of the Related Art Sealing materials applied to joints of the interior and exterior of buildings are materials used by filling joints and gaps between various building members for the purpose of imparting watertightness and airtightness. is there.

[0003] Conventionally, as a sealing material, there have been resins made of silicone, modified silicone, polysulfide, modified polysulfide, polyurethane or the like, and among these, they are excellent in durability and weather resistance. In particular, a modified silicone resin, a modified polysulfide resin or a polyurethane resin is widely used because they have a good balance of performance.

[0004] However, since the sealing material made of these resins remains sticky (tacky) on the surface even after curing,
There is a problem that dust in the atmosphere adheres to the joints and impairs the appearance. Especially in the Kanto region, due to the Kanto loam,
There is also a problem that the surface of the sealing material is significantly stained, and for aesthetic reasons, a technique for imparting antifouling properties to the surface of the sealing material has been proposed.

For example, a method has been proposed in which a barrier layer is provided by applying a dust-preventing agent to the surface of a sealing material after the sealing material has been cured. However, it is not possible to prevent adhesion of dust until the sealing material is cured. There's a problem. In addition, as a dust-prevention agent, an acrylic, urethane-based, or silicone-based resin is the main component, and the hardness of the coating film is hard, so that it cannot follow the movement of joints, or it is affected by the action of light. There is also a problem of deterioration, cracks, and adhesion of dust there.

Further, in order to prevent dust from adhering before the sealing material is cured, a method of applying a solvent type antifouling agent containing a fluororesin as a main component when the sealing material is not cured. (Japanese Patent Laid-Open No. 2-18 / 1990)
2767, JP-A-7-118572).

[0007]

The chlorinated fluorinated hydrocarbons and chlorinated hydrocarbons have been used as solvents for solvent-type antifouling materials containing a fluorine resin as a main component. Due to consideration, it has become necessary to select a solvent other than the solvent.

Other solvents capable of dissolving the fluororesin include ester solvents such as ethyl acetate and butyl acetate, ketone solvents such as methyl ethyl ketone and methyl isobutyl ketone, and aromatic hydrocarbon solvents such as xylene and toluene. . However, since these solvents have high solubility in organic materials, there are problems such as discoloration, shrinkage, and change in gloss of the organic materials around the sealing material. The agent has a problem that it is limited to application to a material in which the material around the sealing material is an inorganic material. Further, considering the solubility in a solvent, there is a problem that the fluorine content in the fluororesin is low, and there is also a problem that the coating amount is large in order to expect performance derived from fluorine. In addition, when the coating amount is increased, there is a problem that the appearance is changed or a crack is generated.

[0009]

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problems, and is directed to a composition for treating the surface of a sealing material, comprising an aliphatic hydrocarbon solvent and a solvent soluble in the solvent. Provided is a composition for treating a sealing material, comprising a fluoropolymer.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As the aliphatic hydrocarbon-based solvent in the present invention, a known solvent containing an aliphatic hydrocarbon as a main component can be used. The aliphatic hydrocarbon in the present specification is a narrowly defined aliphatic hydrocarbon composed of only carbon atoms and hydrogen atoms.

As the aliphatic hydrocarbon solvent in the present invention, a solvent containing at least 80% by weight of an aliphatic hydrocarbon is preferable. It is preferable that the aliphatic hydrocarbon-based solvent does not substantially contain a solvent other than the aliphatic hydrocarbon-based solvent, and particularly does not contain an oxygen-containing solvent such as an aromatic hydrocarbon, an acetate, and a ketone. However, a small amount may be contained as long as the effect on the organic coating can be ignored.

As the aliphatic hydrocarbon-based solvent, a solvent classified according to industrial gasoline JIS Nos. 4 and 5 is preferable, and a paraffin-based hydrocarbon or a paraffin-based solvent containing isoparaffin-based hydrocarbon as a main component is preferable. The paraffinic solvent hydrocarbon is usually a mixture containing two or more kinds of paraffinic hydrocarbons or isoparaffinic hydrocarbons having different carbon numbers, and a plurality of paraffinic hydrocarbons or isoparaffinic hydrocarbon compounds having 6 or more carbon atoms. It is particularly preferable that the content of paraffin-based hydrocarbon having 7 to 12 carbon atoms or isoparaffin-based hydrocarbon having 7 to 12 carbon atoms be 80% by weight or more. For example, as a paraffin-based solvent, isopentane, n-pentane, n-hexane, n-heptane, n
Those containing octane or the like are preferred. Further, the boiling point of the aliphatic hydrocarbon-based solvent is preferably from 80 to 300 ° C.

The above-mentioned aliphatic hydrocarbon-based solvent is commercially available, and the commercially available product can be used as it is in the present invention. Commercially available products include the following. A Solvent, K Solvent, Mineral Spirit, Dry Solvent, New Solve DX, LA Solvent (trade names of Nippon Oil Co., Ltd.), Vegazol AN45, Vegazol 3
040 (above, product names manufactured by Mobile), Essonafusa N
o. 6, Essonafusa No. 5 (above, trade name of Esso Chemical Co., Ltd.), LAWS, Shell Eight, Bright Sol, Shell Sol 140 (above, trade name of Shell Chemical Co., Ltd.), Shoseki Solvent, Shoseki SS Dry Sol, Shoseki Naphsol 1
No. (the trade name of Showa Sekiyu KK), Kyoishi Special Solvent,
Kyoishi White Sol, LA Solvent (above, trade name of Kyodo Sekiyu), Mineral Tarpen, Diamond Solvent (above, trade name of Mitsubishi Petroleum), Solvent Kerosene L
A, Solvent Kerosene (above, trade names made by General Petroleum Co., Ltd.), Dyna Solvent (trade name made by Daikyo Oil Co., Ltd.), Idemitsu Solvent (trade name made by Idemitsu Kosan Co., Ltd.), etc.

Further, as the aliphatic hydrocarbon solvent in the present invention, an aliphatic hydrocarbon may be used alone. As the aliphatic hydrocarbon, normal paraffins having 10 to 18 carbon atoms are preferable, and specific examples include decane, undecane, dodecane, tetradecane, hexadecane, and octadecane. Further, the aliphatic hydrocarbon-based solvent may be an alicyclic hydrocarbon such as methylcyclohexane.

The fluorinated polymer in the present invention includes:
Polymers containing polyfluoroalkyl groups are preferred. In the following, acrylate and methacrylate are collectively referred to as “(meth) acrylate”. The same applies to other compounds. Hereinafter, a polyfluoroalkyl group is referred to as an ^Rf group.

The R ^f group means a group in which two or more hydrogen atoms of an alkyl group have been replaced by fluorine atoms. Further, the R ^f group in the present invention may contain an etheric oxygen atom between carbon-carbon bonds. The carbon number of the R ^f group is 1-2.
0 is preferable, 4 to 16 is more preferable, and 6 to 12 is particularly preferable. The R ^f group preferably has a linear or branched structure, and more preferably has a linear structure. In the case of a branched structure, the branched portion exists at the terminal portion of the R ^f group,
And it is preferable that it is a short chain having about 1 to 3 carbon atoms.

The number of fluorine atoms in the R ^f group is represented by [(the number of fluorine atoms in the R ^f group) / (the number of hydrogen atoms in the alkyl group having the same carbon number corresponding to the R ^f group)] × 100%. In this case, it is preferably 60% or more, particularly preferably 80% or more, and preferably substantially 100%.

Usually, the R ^f group is preferably a group having a hydrogen atom or a chlorine atom at the terminal, or an etheric oxygen between the carbon-carbon bonds of the group. It may be a group having an inserted atom, for example, an oxypolyfluoroalkylene group-containing group.

The R ^f group is preferably a perfluoroalkyl group in which all hydrogen atoms of the alkyl group have been replaced by fluorine atoms. The perfluoroalkyl group has 4 to 20 carbon atoms.
Is preferable, 4-16 are more preferable, and 6-12 are especially preferable. The structure of the perfluoroalkyl group is preferably a linear or branched structure, and particularly preferably a linear structure.
A perfluoroalkyl group having a linear structure is represented by C _n F
A group represented by _{2n + 1} (where n represents an integer of 4 to 16) is preferable, and a group having n of 6 to 12 is particularly preferable.

Specific examples of the R ^f group include the following. In addition, in the following specific examples, groups corresponding to respective structurally isomer groups are also included. C ₄ F ₉ - _{[e.g., CF 3 (CF 2) 3} -, (CF
₃ ) ₂ CFCF _2- , (CF ₃ ) ₃ C-, CF ₃ CF ₂
CF (CF ₃₎ - and the like structural isomers. ], C ₅ F ₁₁ - _{[e.g., CF 3 (CF 2) 4} -, (CF 3) 2 CF (CF
_{2) 2 -, (CF 3} ) 3 CCF 2 -, CF 3 (CF 2)
₂ CF (CF ₃₎ - and the like structural isomers. ], C ₆ F ₁₃ −
_{[CF 3 (CF 2) 2} C (CF 3) 2 - and the like structural isomers. _{], C 8 F 17 -,} C 10 F 21 -, C 12 F 25 -, C 14 F
_{29 -, C 16 F 31 -} , C 18 F 37 -, (CF 3) 2 CFC s
_F2s- (where s is an integer of 1 to 15), HC
_t F _2t - (., where, t is 1 to 18 integer), tetrafluorophenyl group, 3-trifluoromethylphenyl group, 1,3-bis-trifluoromethylphenyl group and the like.

Specific examples of the case where the R ^f group is a group containing an etheric oxygen atom include the following. Here, u represents an integer of 1 to 10, v represents an integer of 1 to 11, and w represents an integer of 1 to 11. m represents an integer of 1 to 10, and preferably an integer of 1 to 6. _{CF 3 (CF 2) 4 OCF} (CF 3) -, F [CF (C
F ₃ ) CF ₂ O] _u CF (CF ₃ ) —, F (CF ₂ CF)
₂ CF ₂ O) _v CF ₂ CF _2- , F (CF ₂ CF ₂ O)
_{w CF 2 CF 2 -, F} [CF (CF 3) CF 2 O] m C
F (CF ₃₎ -.

As the fluorine resin containing an R ^f group in the present invention, a polymer containing polymerized units of a (meth) acrylate containing an R ^f group is preferable. The following compounds are preferred as the (meth) acrylate containing an R ^f group. In the following formula, R ^f represents a C 1-20 perfluoroalkyl group, and R ⁴ represents a hydrogen atom or a methyl group.

CH ₂ = C (R ⁴ ) COOCH ₂ CH ₂ R ^f CH ₂ = C (R ⁴ ) COOCH ₂ CH ₂ N (C ₃ H ₇ ) COR ^f CH ₂ = C (R ⁴ ) COOCH (CH ₃ ) CH ₂ R ^f CH ₂ = C (R ⁴ ) COOCH ₂ CH ₂ N (CH ₃ ) SO ₂ R ^f CH ₂ = C (R ⁴ ) COOCH ₂ CH ₂ N (CH ₃ ) COR ^f CH ₂ = C ( R ⁴ ) COOCH ₂ CH ₂ N (C ₂ H ₅ ) SO ₂ R ^f CH ₂ = C (R ⁴ ) COOCH ₂ CH ₂ N (C ₂ H ₅ ) COR ^f CH ₂ = C (R ⁴ ) COOCH ₂ CH ₂ N (C ₃ H ₇ ) SO ₂ R ^f CH ₂ = C (R ⁴ ) COOCH (CH ₂ Cl) CH ₂ OCH ₂ CH ₂ N (CH ₃ ) SO ₂ R ^f

[0024] The polymer containing polymerized units of containing ^the R ^f group (meth) acrylate, containing ^the R ^f group (meth) acrylate polymerization units, also contain one or more Good. If it contains 2 or more is preferably used together R ^f number of carbon atoms contained in the group moiety contains two or more different ^the R ^f group (meth) acrylate.

[0025] R ^f containing a group (meth) polymer comprising polymerized units of acrylate, of a monomer having a radical polymerizable unsaturated bond other than polymerized units of which contain ^the R ^f group (meth) acrylate It may contain a polymerized unit. In the following, the monomer having the radical polymerizable unsaturated bond is referred to as “other monomer”.

Other monomers include the following from the viewpoint of solubility in the above-mentioned aliphatic hydrocarbon solvents. Among these, it is preferable that cyclohexyl (meth) acrylate is essential as the other monomer, and it is particularly preferable that cyclohexyl methacrylate is essential.

Ethylene, vinyl acetate, vinyl fluoride, halogenated vinyl styrene, α-methyl styrene, p-methyl styrene, (meth) acrylic acid and its alkyl ester, poly (oxyalkylene) (meth) acrylate, (meth) Acrylamide, diacetone (meth) acrylamide, methylolated (meth) acrylamide, N
-Methylol (meth) acrylamide, vinyl alkyl ether, vinyl alkyl ketone, butadiene, isoprene, chloroprene, glycidyl (meth) acrylate, aziridinyl (meth) acrylate, benzyl (meth) acrylate, isocyanatoethyl (meth) acrylate, cyclohexyl (meth) ) Acrylate, 2-
Ethylhexyl (meth) acrylate, maleic anhydride, triaryl isocyanurate, (meth) acrylate having polysiloxane, N-vinylcarbazole, and the like.

In the present invention, the amount of fluorine in the polymer is 20.
~ 30% by weight is preferred. If the amount of fluorine is too small, the amount of the processing agent used for obtaining the effect increases, and the influence on the appearance and the risk of cracks increase. On the other hand, when the amount of fluorine is too large, the solubility of the resin in the solvent is reduced, and an insoluble portion may be generated.

The molecular weight of the polymer is 1 in terms of weight average molecular weight.
000-200,000 is preferable, and especially 30,0
00 to 100,000 is preferred. If the molecular weight is too small, the antifouling property against dust is not sufficient. On the other hand, if the molecular weight is too large, the solubility in a solvent is reduced and the viscosity is undesirably increased.

[0030] As a method for obtaining a polymer containing polymerized units of containing ^the R ^f group (meth) acrylate contains ^the R ^f group in an aliphatic hydrocarbon solvent (meth) acrylate and other optionally A method in which a monomer is dissolved and polymerized under heating and stirring is preferable. The polymerization is preferably carried out by allowing a polymerization initiation source to act.As the polymerization initiation source, a polymerization initiator such as an organic acid peroxide, an azo compound, or a persulfate,
Ionizing radiation such as γ-rays may be employed.

The composition for treating a sealant of the present invention contains the above-mentioned aliphatic hydrocarbon-based solvent and a fluoropolymer. The amount of the fluoropolymer in the composition for treating a sealing agent is not particularly limited, but if the concentration is too low, the degree of the effect may be reduced, or dripping may occur due to the necessity of applying a large amount, and the concentration may be high. If too much is uneconomical, one of the compositions
The fluoropolymer is preferably contained in an amount of 0.1 to 15 parts by weight, more preferably 0.3 to 8 parts by weight, per 100 parts by weight. Further, the aliphatic hydrocarbon solvent is preferably contained in an amount of 85 to 99.9 parts by weight, more preferably 92 to 99.7% by weight, based on 100 parts by weight of the composition.

The composition for treating a sealant of the present invention may be composed of only the above-mentioned aliphatic hydrocarbon-based solvent and fluoropolymer, but may further contain other additives as necessary. Other additives include fragrances, defoamers, fungicides and the like. When other additives are included,
It is preferably contained in an amount of 0.01 to 1 part by weight, particularly preferably 0.05 to 0.5% by weight, based on 100 parts by weight of the composition.

The composition for treating a sealing agent of the present invention can be applied to the surface of a sealing material to form a film on the surface of the sealing material, thereby preventing adhesion of dirt. As the sealing material, a sealing material made of a modified silicone-based, modified polysulfide-based or polyurethane-based resin is preferable, and a modified silicone-based resin is particularly preferable.

As the sealing material, a POS seal,
POS seal type II, POS seal LM, etc. (these are brand names manufactured by Cemedine), penguin seal 2500DR
Y, a sealing material made of denatured silicone resin such as penguin seal 2570 (above, trade name of Sunstar Giken), S-750 (above, trade name of Cemedine Co.),
Penguin seal 980, penguin seal 999 (or more,
Sunstar Giken Co., Ltd.), Hamatite UH-30,
Hamatite Seal Ace (trade name of Yokohama Rubber Co., Ltd.)
And a sealing material made of a polyurethane-based resin.

The method for applying to the surface of the sealing material is not particularly limited, and includes a method of applying a sealing material with a putty or the like, and then applying an antifouling agent to the surface of the sealing material by a brush, a roll, a spray, or the like. Can be Also,
The timing of the application is not particularly limited, and may be after or after the sealing material is cured. Also,
A masking tape may be applied in advance around the joint to prevent the sealing composition from adhering to the wall material.

In the present invention, the composition is applied and then dried to form a fluoropolymer film on the surface of the sealing material. Drying may be natural drying or heat drying. In particular, when used in a factory with a lot of dust, it is preferable to shorten the drying time by heating and to prevent dust from adhering before the solvent is evaporated.

The fluoropolymer film is preferably formed on the surface of the sealing material to a thickness of 0.1 to 5 μm. If it is too thin, sufficient effects cannot be obtained, and if it is too thick, it causes cracks and is uneconomical.

The application site of the sealing material treated with the composition of the present invention is not particularly limited. For example, there are a sealing material present at a joint or a gap between various building members, a sealing material used for transportation equipment, a sealing material used for electric equipment, a sealing material used for furniture and kitchenware, and the like. Among them, the composition of the present invention is preferably applied to a sealing material present at a joint or a gap between various building members.

[0039]

EXAMPLES Example 1 Preparation Example of Composition for Treating Sealant In a 1 liter autoclave equipped with a stirrer, 200 parts by weight of mineral spirit (trade name, manufactured by Nippon Oil Co., Ltd.), perfluoroalkylethyl acrylate (perfluoro The alkyl group has 6, 8, 10, 12, 14 carbon atoms.
And the average is 9. Hereinafter, it is described as FA. ) 45 parts by weight, cyclohexyl methacrylate 51
Parts by weight, 4 parts by weight of triallyl isocyanurate and 1 part by weight of azobisisobutyronitrile were added. While replacing the air inside with nitrogen gas and stirring at 300 rpm, 6
The temperature was raised to 0 ° C. and maintained for 20 hours to obtain a pale yellow liquid. The conversion of the monomer by gas chromatography was 99% or more. The resulting pale yellow liquid was diluted with Newsol (trade name, manufactured by Nippon Oil Co., Ltd.) so that the solid content concentration became 2% by weight, to obtain Composition 1.

Example 2 Preparation Example of Sealing Material Treatment Composition In a 1-liter autoclave equipped with a stirrer, 200 parts by weight of Neusol (trade name, manufactured by Nippon Oil Co., Ltd.), 45 parts by weight of FA, 51 parts by weight of cyclohexyl methacrylate, triallyl 4 parts by weight of isocyanurate and 1 part by weight of azobisisobutyronitrile were added. The internal air was replaced with nitrogen gas, and the temperature was raised to 60 ° C. while stirring at 300 rpm.
Hold for 0 hours. As a result of analyzing the reaction crude liquid by gas chromatography, the conversion of the monomer was 99% or more. The reaction crude liquid was diluted with mineral spirit (trade name of Nippon Oil Co., Ltd.) so that the solid concentration became 3% by weight,
Composition 2 was obtained.

Example 3 Preparation Example of Composition for Processing Sealant The composition 1 in Example 1 was further diluted to have a solids concentration of 0.5% by weight.

Example 4 Preparation Example of Composition for Processing Sealant A composition 4 was prepared which was different from composition 1 in Example 1 only in that the solid content concentration was 5% by weight.

[Example 5] Comparative preparation example of a composition for treating a sealing material The solvent was distilled off from the pale yellow liquid in Example 1, and ethyl acetate was added to the composition to give a solid concentration of 2% by weight. Was prepared to obtain composition 5.

Example 6 Comparative Preparation Example of Composition for Treating Sealant In a 1-liter autoclave equipped with a stirrer, 200 parts by weight of methyl isobutyl ketone, 10 parts by weight of FA, 51 parts by weight of methyl methacrylate, 35 parts by weight of cyclohexyl methacrylate, 4 parts by weight of allyl isocyanurate,
1 part by weight of azobisisobutyronitrile was added. The internal air was replaced with nitrogen gas, and the temperature was raised to 60 ° C. while being stirred at 300 rpm, and maintained for 20 hours. As a result of analyzing the reaction crude liquid by gas chromatography, the conversion of the monomer was 99% or more. The reaction crude liquid was diluted with methyl isobutyl ketone so that the solid content concentration became 3% by weight, to obtain composition 6.

[Evaluation Examples 1 to 5] Composition 1 prepared above
To 4 were evaluated by the following evaluation methods. Table 1 shows the results.

[Comparative Evaluation Examples 6 to 9] The compositions 5 and 6 prepared above were similarly evaluated by the following evaluation methods. In addition, those which did not treat the composition (Evaluation Examples 6 and 7) were evaluated by the same evaluation method described below. Table 1 shows the results.

[Evaluation Method of Surface Condition] A joint having a width of 10 mm was formed with a slate having a thickness of 6 mm, and a masking tape was applied along the joint. A one-component silicone-based sealing material (trade name: POS seal manufactured by Cemedine) or a polyurethane resin-based sealing material (trade name: Hamatite UH-30 manufactured by Yokohama Rubber Co.) is filled between the joints, and the surface of the sealing material is filled. It was flattened with a spatula. Immediately thereafter, the composition for treating a sealing material was sprayed with a sprayer, and spray-coated so that a film formed from the composition had a thickness in the range of 0.1 to 5 μm. Immediately, the masking tape was peeled off, and this was used as a test joint.

After 7 days, 30 days and 180 days, the surface of the test joints was visually inspected for stains and evaluated according to the following criteria A to D. Further, the test joints 180 days later were examined for the presence or absence of cracks. A: No adhesion of dirt is observed. B: Some adhesion of dirt is observed. C: The surface is slightly blackened. D: The surface is completely black. +: Cracked. ±: Slightly cracked. ,-: No crack.

[Evaluation method for influence on organic coating film]
Acrylic paint (red) is applied to a 00 mm, 6 mm thick polymethyl methacrylate resin plate so as to have a thickness in the range of 20 to 30 μm, dried at 100 ° C. for 5 minutes, and cooled to room temperature to prepare a coated plate. did. The composition is sprayed on the coated plate with a sprayer, and a film formed from the composition is 2 μm in width of 2 cm.
m was spray-coated. It was left at room temperature for 30 minutes, and the appearance of the coated plate surface was visually evaluated. 〇: No change in appearance is observed. ×: Discoloration, unevenness, etc. of the coating film are observed.

[Evaluation Method of Tack Property] The same test joint as used in the evaluation of antifouling property was prepared, and the joint surface after drying for 1 hour at room temperature was touched by hand to determine whether or not there was a sticky feeling (tack property). evaluated.

[0051]

[Table 1]

[0052]

The composition for treating a sealing material of the present invention comprises:
A highly durable antifouling property can be imparted to the surface of the sealing material. Further, even if a coating film made of an organic coating is present in the vicinity of the sealing material, the sealing material can be used without fear of adversely affecting the coating film. Further, the coating formed by the composition for treating a sealing material of the present invention has the advantages that cracks can be prevented and the appearance does not change much.

Continued on the front page (72) Inventor Yoko Ikemoto 2-23-1, Hatchobori, Chuo-ku, Tokyo Asahi Glass Coat and Resin Co., Ltd.

Claims (9)

[Claims] 1. A composition for treating a surface of a sealing material, which comprises an aliphatic hydrocarbon solvent and a fluoropolymer soluble in the solvent. 2. The composition for treating a sealing material according to claim 1, wherein the aliphatic hydrocarbon solvent contains at least 80% by weight of the aliphatic hydrocarbon. 3. The aliphatic hydrocarbon-based solvent has a boiling point of 80 to 30.
The composition for treating a sealing material according to claim 1, wherein the composition has a temperature of 0 ° C. 4. 4. The sealing material according to claim 1, wherein the fluorine-containing polymer is a polymer containing polymerized units of an acrylate containing a polyfluoroalkyl group or polymerized units of a methacrylate containing a polyfluoroalkyl group. Processing composition. 5. The composition for treating a sealing material according to claim 1, wherein the fluorinated polymer is a polymer containing methacrylate polymer units containing a perfluoroalkyl group. 6. The antifouling composition for a sealing material according to claim 4, wherein the fluoropolymer is a copolymer containing polymerized units of cyclohexyl acrylate or polymerized units of cyclohexyl methacrylate. 7. A fluorine-containing polymer having a fluorine content of 20 to 20.
The composition for treating a sealing material according to claim 1, 2, 3, 4, 5, or 6, which is 35% by weight. 8. A treatment method comprising treating a surface of a sealing agent with the composition for treating a sealing material according to claim 1, 2, 3, 4, 5, 6, or 7. 9. A building member using a sealing material treated with the sealing material-treating composition according to claim 1, 2, 3, 4, 5, 6, or 7.