JPS61258852A - Fluorine coating compound having improved adhesiveness - Google Patents

Abstract

PURPOSE:A fluorine coating compound having improved coating performance and improved adhesiveness, comprising a cold-setting, solvent-soluble fluorine- contained polymer consisting of a fluoroolefin and a vinyl ether as essential components, an organic silicate and an organic solvent. CONSTITUTION:(A) 100pts.wt. fluorine-contained polymer having 3,000-200,000 number-average molecular weight consisting of (i) 30-70mol% fluoroolefin, preferably hexafluoropropene, etc., (ii) 20-60mol% vinyl ether, preferably ethyl vinyl ether, etc., and (iii) 1-25mol% organosilicone compound having an olefinic unsaturated bond and a hydrolyzable group is blended with (B) 1-20pts.wt. organic silicate shown by the formula (R is 1-8C alkyl, allyl or aryl; n is 0-11), (C) an organic solvent and optionally (D) 0.001-10pts.wt. silanol catalyst.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fluorine-based paint that has good adhesion to base materials such as metals.

C. Conventional technology] Weather resistance,
Paints with excellent durability are required, and high-grade exterior paints based on polyester or acrylic are used. but,
Existing paints have a short outdoor service life, and even the above-mentioned high-quality paints lose their aesthetic appearance and substrate protection effect within a few years.

On the other hand, fluoropolymers are extremely stable both thermally and chemically, and have excellent weather resistance, water resistance, chemical resistance, solvent resistance, mold releasability, low friction, and water repellency. Suitable as a surface treatment agent for various substrates. However, conventionally known fluoropolymers suffer from the above-mentioned properties,
It is difficult to dissolve in organic solvents and form a coating film, making it extremely difficult to use as a paint. For example, most of the currently known fluoropolymer paints are powder paints, with only a small amount of PVdF.
(Polyvinylidene fluoride) is simply used as an organic solvent-dispersed paint by taking advantage of its ability to dissolve in specific solvents at high temperatures.

Moreover, since these fluoropolymer paints require baking at a high temperature when forming a film, their application is limited to areas where heating equipment is available. Furthermore, the presence of heating equipment and the baking process are not desirable from the standpoint of the safety of workers and the environment of the workplace. Therefore, in recent years, attempts have been made to develop fluoropolymers that are soluble in solvents or do not require a baking process at high temperatures.

For example, a patent application filed by the present applicant in Japanese Patent Application No. 59-263017 discloses a ternary copolymer consisting of a fluoroolefin, a vinyl ether, an organosilicon compound having an olefinic unsaturated bond, and a hydrolyzable group. This copolymer is soluble in organic solvents and can be cured at room temperature.

However, when this fluoropolymer is dissolved in an organic solvent and used as a paint, the coating formed on the base material has excellent weather resistance and low friction, but it has poor adhesion to the base material, especially metals. There is a problem of poor adhesion to inorganic substrates. For this reason, when painting the above-mentioned paint on the base material,
A method is used in which the surface of the base material is specially treated or a single layer of primer is formed in advance, and then coating is applied thereon.

However, with this method, the painting work is complicated, and even though the fluoropolymer film has good properties, the presence of a single layer of primer reduces its solvent resistance and weather resistance. It also causes poor durability of the film.

[Problem that the invention seeks to solve]

In view of this situation, the present inventors have conducted repeated studies to develop a solution-type fluorine paint that does not require a single layer of primer and can be cured at room temperature and has good adhesive strength even when applied directly onto a base material, and has developed the present invention. It has been reached.

[Means for solving problems]

That is, the present invention is characterized by comprising: (I) a solvent-soluble fluoropolymer that is curable at room temperature and contains a fluoroolefin and a vinyl ether as essential components; (II) an organic silicate; and (II) an organic solvent. This invention relates to a fluorine paint with good adhesion.

[Effect]

The fluoropolymer (1) used in the coating material of the present invention can be cured at room temperature and has the property of being soluble in organic solvents. Fluorine-based polymers with such properties essentially contain fluoroolefins and vinyl ethers, and can be cured by a crosslinking reaction at room temperature in the presence or absence of a curing agent or curing accelerating catalyst. It also contains monomer components with organic functional groups. More specific examples of such fluoropolymers include the following polymers.

That is, a copolymer consisting essentially of (a) a fluoroolefin, ('b) a vinyl ether, and an organosilicon compound having a Cl olefinic unsaturated bond and a hydrolyzable group; Based on the total number of moles of (a) to (C), [a): 30 to 70 mol%, (b
): 20 to 60 mol%, (C) 1 to 25 mol%, and has a number average molecular weight (Mn) of 3,000 to 200,000 as measured by gel permeation chromatography.

Here, this fluoropolymer is at least the above-mentioned +8
), (b) and (c). However, a small amount of other copolymerizable monomer components such as α-olefins, cycloolefins, unsaturated carboxylic acids, etc. may be copolymerized as long as the purpose of the present invention is not impaired.

Fluoroolefin (al), which is a monomer component constituting a fluoropolymer, has at least one fluorine atom in the molecule, and preferably all hydrogen atoms of the olefin are replaced with fluorine atoms and other halogen atoms. Further, from the viewpoint of polymerizability and properties of the produced polymer, fluoroolefins having 2 or 3 carbon atoms are preferred.

Examples of such fluoroolefins include CFz-C
Fz% CF3CC1% CHz=CFL%CH
z −CHF, CCIF=CFz, CHC1=
CFz 1CCh=CFz, CCIF=CGIP,
CHF-CC1z, CH2=CCIF, CCI□
=CC: Fluoroethylene type such as IF, ChCF =C
Pz, CF3CF=CHF 5CFBCH=IC
Fz 1CF3CF=CHz, CF3CF=C
HF, CHFzCF=CIIF.

CF2Cl = CHz ,, CII CF
3CC1, CH3CI=CFz, CH3CF=C
l1z, CF3CC1=CFz, CF3CC
1=CFz, CF3CF=CFCI, CFzCl(
:CI==CFz, CFzCICF-CFCI.

CF(:1zCF=CFz, CF3CC1=CCI
F, CFiCCl = CC1z.

CCIFz CF = CCh, CC13CF = CPz
, CF2ClCCl=CC12, CFClz CCl
= CC12, CF3CF=CHC1, CCIFz C
F=CHCl.

CF3 CCI = CllCl, CHFzCCl =
CCl2, CFzCICH= CCl2, ChCIC
C1=CICI, CC13CF=CHC1, CF3C
C=CFz.

CFzBrCH=CFz, CF3(:Br=CHB
r, CF3CC1=CFz.

CH2BrCF=CC1z, CF:3CBr=CH
2, CF3CC1CHBr.

CFzBrCH=CHF, ChBrCF=CFz
Fluoropropene series such as CF2 CF2 CF =
CFZ, CF3CF = CFCF3, CF3Cl =
CFCF3, CPz = CPCFz CHPz, CF
2 CFz CF = CII2, CF3 Ctl
= CHCF3, CFz =CFCFzCH3
, CF2 = CFCII-CH3, CF3ClI2
CI=C11z, CF3CH=CH
Cl1x, CPz = CHCL CH3, Ctl
3 CF2 CH= CHz, CF112 C)l
= C11CFHz, C)lzcFzcH= C)1
3, Ct(z = CFCtlz C)13, C
Fi(CPz)zCF=CFz-.

Examples include fluoroolefins having 4 or more carbon atoms, such as CHF3(Cr'Z)3CI'=CF2.

Among these, as mentioned above, fluoroethylene and fluoropropene are preferred, and tetrafluoroethylene (CF 2 = CF2), chlorotrifluoroethylene (CCIF = CF2) and hexafluoropropene (CF2 = CFCF3) are particularly preferred. Furthermore, hexafluoropropene and chlorotrifluoroethylene are preferred from the viewpoint of safety and ease of handling.

In addition, in the present invention, the fluoroolefins may be used alone or in combination.

Vinyl ether (b) is a compound in which a vinyl group and an alkyl (including cycloalkyl) group, an aryl group, an aralkyl group, etc. are ether-bonded, and among them, an alkyl vinyl ether, especially one having 8 or less carbon atoms. , preferably an alkyl vinyl ether bonded with 2 to 4 alkyl groups. Furthermore, alkyl vinyl ethers in which the alkyl group is in the form of a chain are most preferred.

Examples of such vinyl ethers include linear alkyl ethers such as ethyl vinyl ether, propyl vinyl ether, isopropyl vinyl ether, butyl vinyl ether, tert-butyl vinyl ether, pentyl vinyl ether, hexyl vinyl ether, isohexyl vinyl ether, octyl vinyl ether, and 4-methyl-1-pentyl vinyl ether. Examples include vinyl ethers, cycloalkyl vinyl ethers such as cyclopentyl vinyl ether and cyclohexyl vinyl ether, aryl vinyl ethers such as phenyl vinyl ether, o-, m-, p-)lyl vinyl ether, and aralkyl vinyl ethers such as benzyl vinyl ether and phenethyl vinyl ether. .

Among these, chain alkyl vinyl ethers and cycloalkyl vinyl ethers are particularly preferred, and ethyl vinyl ether, propyl vinyl ether, and butyl vinyl ether are more preferred.

Furthermore, in the present invention, it goes without saying that vinyl ethers may be used alone or in combination.

The organosilicon compound (C) may be one having an olefinic unsaturated bond and a hydrolyzable group in the molecule, and specifically, those shown in the following general formulas (1) to (3) are exemplified. can do.

R'R"StY' Y2(11 R'X5iY'Y" (2) R'SiY'Y"Y3(31 (wherein R1 and RZ have an olefinic unsaturated bond,
It consists of carbon, hydrogen and optionally oxygen, each being an intervening or different radical. X is an organic group having no olefinic unsaturated bond, and Y', Y2, and Y3 are mutually or different hydrolyzable groups. ) R1, R'2 as more specific examples include vinyl, allyl
), butenyl, cyclohexenyl, and cyclopentagenyl, and terminal olefinically unsaturated groups are particularly preferred. Other preferred examples include C1 (z = CH-0(CH2)?-1C
Hz = C(CHi)Coo(CH2)3-
1CIlz” C(CH3) COO(CH2)2-
○-(CHz)B-1CI+2=C(CH
3) C00CHzC)120cH, CHCH20(C
Il) Groups such as U-, H and the like can be mentioned. Among these, vinyl groups are most suitable. As a specific example of X, for example, 1
Examples of hydrocarbon groups include methyl, ethyl, propyl, tetradecyl, octadecyl, phenyl, benzyl, tolyl, and the like, and these groups may also be halogen-substituted hydrocarbon groups.

Specific examples of Yl, Y2, and Y3 include alkoxy groups such as methoxy, ethoxy, butoxy, and methoxyethoxy, alkoxyalkoxy groups, formyloxy,
Acyloxy groups such as acetoxy, probionoxy, oximes e.g. ON=C(CHs)z, -ON=CHCHz
Cz Hs and -ON=C(CtH!;)z, or substituted amino and arylamino groups such as -
NHCH3, Nt(CzH and -NH(C,11,)
etc., and any other hydrolyzable organic group.

The organosilicon compound preferably used in the present invention is a compound represented by the general formula (3), particularly the group Y',
An organic silicon compound having the same Y2 and Y' passes through it. Among these, R1 is a vinyloxyalkyl group (CI+2=C
H-'O-(CH2). -) or a vinyl group, and Y
' -Y3 is preferably an alkoxy group or an alkoxyalkoxy group, such as vinyloxypropyltrimethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, and vinyltris(methoxyethoxy)silane. However, vinylmethyljethoxysilane, vinylphenyldimethoxysilane, etc. can be used as well.

The content ratio of the monomer components (a) to (C) in the fluoropolymer is (a) 230 to 70 mol%, and (b) 20 to 70 mol%, based on the total number of moles of (a) to (C). 60 mol%, (C): 1-25 mol% ((a) + (bl
+ (c) = 100), mostly (a): 40
~60 mol%, (b): 20~50 mol%, (C1
: In the range of 5 to 20 mol%.

The molecular weight was determined using gel permeation chromatography (C, PC) using tetrahydrofuran as a solvent and monodispersed 1h styrene of known molecular weight as a standard substance.
) The number average molecular weight (shoulder n) determined by measurement is usually 3
000-200000, mostly 5000-100000
within the range of By adopting such a composition ratio and molecular weight, it becomes solvent soluble and has excellent film coating properties, and after being cured by the method described below, it has excellent solvent resistance, chemical resistance, weather resistance, heat resistance, and mechanical resistance. It has excellent physical properties.

Another property of fluoropolymers is that they are non-polymerized or have low crystallinity, and many are non-polymerizable. Generally X
Linear crystallinity 0%, differential scanning calorimetry (DS
In many cases, no melting point is observed for C). Therefore, transparency is good.

The glass transition temperature (Tg) is usually -60 to +20°C, often 140 to +5°C, when measured by psc at a heating rate of 10°C/min after cooling the sample to -120°C.
within the range of

As an optical property, there is a refractive index (IIc=), which is usually 1.
48 to 1.34, mostly in the range of 1.44 to 1.36.

In order to produce this fluoropolymer, the method described in detail above (
This is possible by copolymerizing each monomer of al to (C) in the presence of a well-known radical initiator. Here (a)
Each component of ~(C) is important, for example (a
) component and (C) component alone do not cause copolymerization, but (b
) components (al, (bl, and C1) are copolymerized.

Various known radical initiators can be used for copolymerization. Specifically, organic peroxides, organic esters such as benzoyl peroxide, dichlorobenzoyl peroxide, dicumyl peroxide, di-tert-butyl peroxide, 2,5-dimethyl-
2,5-di(peroxybenzoate)'hexyne-3
．． 1.4-bis(tert-butylberoxyisopropyl)benzene, lauroyl peroxide, tert
-butyl peracetate, 2,5-dimethyl-2,5-
di(tert-butylperoxyhexine-3,2,
5-dimethyl-2,5-di(tert-butylperoxy)hexane, tert-butylberbenzony), t
tert-butyl perphenylacetate, tert-butyl perisobutyrate, tert-butylperu 5
Examples include ec-octoate, tert-7' til perpivalate, cumyl perpivalate, tert-7' til verdiethyl acetate, and other azo compounds such as azobis-isobutylnitrile, dimethyl azoisobutyrate, and the like. Among these are dicumyl peroxide,
Di-tert-butylperoxide, 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane-3,2,5-dimethyl-2,5-di(tert-butylperoxy)hexane, 1.4 -bis(tert-
Dialkyl peroxides such as butylperoxyisopropyl)benzene are preferred.

The copolymerization takes place in a reaction medium consisting of an organic solvent. The solvents used here include aromatic hydrocarbons such as benzene, toluene, and xylene, aliphatic hydrocarbons such as n-hexane, cyclohexane, and n-heptane, and chlorobenzene, bromobenzene, iodobenzene, and 0-bromotoluene. Halogenated aromatic hydrocarbon, tetrachloromethane, 1.1. L Examples include halogenated aliphatic hydrocarbons such as trichloroethane, tetrachloroethylene, and 1-chlorobutane.

Copolymerization is carried out by adding the radical initiator to the above solvent in a molar ratio of 10 to 2 x 10 to the total number of moles of monomers. In addition, the polymerization temperature is -30 to 200°C, preferably 20 to 100°C, and the polymerization pressure is 0 to 100 kg/
cr&-G, preferably O~50kg/cn! -G
It is.

Organic silicate (II) has the general formula % (R represents an alkyl group having 1 to 8 carbon atoms, or an aryl group, and n represents O or an integer of 11 or less).
tetraalkyl, tetraallyl or tetraaryl orthosilicate or polyalkyl,
Polyaryl or polyaryl silicates.

Specifically, for example, methyl orthosilicate, ethyl orthosilicate, n-propylorthosilicate, n-
Butyl orthosilicate, n-octylorthosilicate, phenyl orthosilicate, benzyl orthosilicate, and phenethyl orthosilicate, allyl (
allyl) orthosilicate, metaallyl orthosilicate, and polysilicates produced by dehydration condensation of these orthosilicates are also used. If an organic silicate having a substituent having more than 8 carbon atoms is used, the rate of hydrolysis is low, so it may not be possible to efficiently produce a film exhibiting strong adhesion. Further, when the goal is to create a paint with less odor, that is, a working environment during painting, polysilicates, especially those with n≧2, are preferable.

As the organic solvent (I [I), any solvent that is commonly used in the paint field and can dissolve the fluoropolymer (I) may be used, such as aromatic solvents such as benzene, toluene, and xylene. Examples include hydrocarbons, ketones such as acetone and methyl ethyl ketone, ethers such as diethyl ether and dipropyl ether, and halogenated hydrocarbons such as trichloromethane, dichloroethane and chlorobenzene.

The fluorine-based paint of the present invention has the above three components as essential components, but if necessary, a silanol condensation catalyst may be added in order to accelerate the hydrolysis rate of the organic silicate, that is, the crosslinking reaction rate. The presence of a silanol catalyst has the effect of freely adjusting the curing speed of the paint by changing its type and amount.

Known silanol catalysts can be used, such as siftyltin dilaurate, stannous acetate, and stannous octanoate.
carboxylic acid metal salts such as tin, lead naphthenate, iron 2-ethylhexanoate, cobalt naphthenate, organic bases such as ethylamine, hexylamine, dibutylamine, piperidine, etc., acids such as mineral acids and organic fatty acids. Suitable catalysts are alkyl tin salts of carboxylic acids,
Examples include dibutyltin dilaurate, dibutyltin dioctoate, and dibutyltin diacetate.

Various blending ratios of the fluoropolymer (r) and the organic silicate (Tl) can be considered, but if the blending amount of (II) is too small, the adhesion will be low, and if the blending amount of (IT) is too large, the film will be damaged. From the overall balance of both film properties and adhesion, the latter should be 1 to 20 parts by weight, preferably 2 to 18 parts by weight, and particularly 3 to 15 parts by weight for every 100 parts by weight of the former.

In addition, when using a silanol catalyst in combination, if the catalyst amount is too small, the curing of the film will be slow, and if it is too large, the adhesiveness will decrease. Silanol catalyst 0.001
-10 M parts, preferably 0.005 to 5 parts by weight, is suitable.

The amount of organic solvent (III) is not particularly specified, and may be added as appropriate to obtain a viscosity that provides excellent coating workability.

〔Example〕

The content of the present invention will be explained below using preferred examples, but unless otherwise specified, the present invention is not limited to these examples. be.

[Reference experiment]

The fluoropolymer used in the examples was polymerized in the following manner.

80 g of benzene 1 ethyl vinyl ether (EVE
) 8.2g, butyl vinyl ether (BVE) 12.
6 g, trimethoxyvinylsilane (TMVS)8.
0 g and dilauroyl peroxide 1 g were charged, solidified with acetone and dry ice, and degassed to remove oxygen from the system. After that, hexafluoropropene (HFP) 4
6 g was introduced into an autoclave and the temperature was raised. When the temperature inside the autoclave reaches 65℃, the pressure is 8.1
kg/cffl. The reaction was continued for 8 hours under stirring,
Pressure is 4.6kg/c11! When the reaction temperature reached 1, the autoclave was cooled with water to stop the reaction. After cooling, the unreacted upper part was expelled, the autoclave was opened, and the reaction solution was taken out. After concentration, the mixture was washed with a benzene-methanol mixed solvent, concentrated again, and dried. Polymer yield was 60g.

The number average molecular weight of the obtained polymer by GPC was 8×1
It was 03. We also carried out composition analysis using elemental analysis and NMR, HEP/EVE/BVE/T.
hvs=50/20/20/10 (molar ratio) (Experimental Example 1).

In the same manner, the following two types of polymers were obtained by changing the type and amount of monomers.

(Experiment Example 2) CTFE/EVE/Cyl (VB/T?IVS=5
0/30/10/10 (molar ratio) Mn=2X10% (Experimental example 3) 11FP/EVE/IIVE/TEVSζ40/
35/IQ/15 (%-R ratio) -6 x 103 *CTFE (monochlorotrifluoroethylene) Cy
I(VE (cyclohexyl vinyl ether)TI
EVS () ethoxyvinylsilane) Example 1 To 100 parts by weight of the fluoropolymer of Experimental Example 1, methyl silicate 51 (Colcoat Co., Ltd.) and dibutyltin dilaurate were blended in the proportions (parts by weight) shown in Table 1. Further, 67 parts by weight of toluene was blended to obtain a resin solution.Next, the solution was applied to a steel plate using a 100μ applicator.
After being left at room temperature for 10 days, the following various tests were conducted. The results are shown in Table 1. The surface skinning phenomenon shown in Comparative Example 1 was not observed even after the solution was left for 2 hours.

Base peeling test: r on the surface of the coating film applied to the steel plate.
JIS K 5400-1979 Paint general test method 6.
A cut was made in accordance with the 15th Foundation Examination. Next, place a 20 mm wide cellophane adhesive tape on the surface of the paint film at the base grains, rub it strongly with a 7 mm wide spatula to bring the tape into close contact with the paint surface, and then quickly pull the cellophane tape vertically upwards. I peeled it off. This cellophane tape was adhered and peeled off four times from each direction of the four sides of the base grains, and the number of base grains that remained without being removed was determined, and the test results were indicated by the number.

Acetone, toluene immersion: The sample was immersed in acetone or toluene for 24 hours, and the peeling state of the coating film was observed.

Pencil hardness: JIS K 5400 (1979) 6
．． 14 DuPont Impact: JIS K 5400 (19
79) 6.13.3 BB 10 g, z inches Example 2, methyl silicate 51 in Example 1 was replaced with 1 of methyl silicate 51 and tetramethyl orthosilicate:
1 (weight ratio) and the test was carried out in the same manner as in Example 1, and the same results were obtained.

Example 3 In Example 1, a test was conducted by changing the type of applicator and changing the film thickness, but no difference in test results was observed depending on the film thickness. The results are shown in Table 2.

Table 2 Comparative Example 1 100 parts by weight of the polymer of Experimental Example 1, 67 parts by weight of toluene,
Dibutoxytitanium bisoctylene glycolate 70% (
28 parts by weight of a solution (Orgachix [F] TC200, manufactured by Matsumoto Pharmaceutical Co., Ltd.) was applied to a steel plate using an applicator.

Table 3 shows the relationship between the film thickness and the base peel test results after 10 days of room temperature curing.

In addition, in this solution, a skin was observed on the surface of the solution after it was left standing for 10 minutes, and this did not re-dissolve even after stirring.

Comparative Example 3 100 parts by weight of the polymer of Experimental Example 1, γ-glycidoxypropyltormethoxysilane (Shin-Etsu Chemical Co., Ltd. KBM-4)
03'> 10.200 parts by weight, 67 parts by weight of toluene,
A solution consisting of 0.06 parts by weight of dibutyltin dilaurate was applied to a steel plate using a 100μ applicator. After 10 days of curing at room temperature, a base peel test was conducted, and peeling was observed in all cases.

Example 4 100M parts of the polymer of Experimental Example 2, 51 parts of methyl silicate
A solution containing 5 miiLJ (manufactured by Colcoat), 67 parts by weight of toluene, and 0.06 parts by weight of dibutyltin dilaure was applied and cured in the same manner as in Example 1. The results of each test are shown in Table 4.

Note that no decrease in tensile strength, tear strength, or 60°-60° specular reflectance of the film was observed due to the addition of methyl silicate.

Example 5 100 parts by weight of the polymer of Experimental Example 3, 40 parts by weight of ethyl silicate
(manufactured by Colcoat) 3 parts by weight, ethyl silicate 28 (
(manufactured by Colcourt) 3 parts by weight, dibutyltin dilauray)
0.6 parts by weight of the solution was applied to a steel plate using a 100μ applicator. Table 5 shows the test results on the 10th day of room temperature curing.

〔Effect of the invention〕

The features of the paint according to the present invention are as follows.

■Even when it comes into contact with air, the increase in viscosity is small and there is no formation of a surface film. When a paint containing a metal chelate is opened, the portion (surface layer) that comes into contact with the air quickly hardens and forms a film, reducing paintability. However, the paint of the present invention containing an organic silicate does not have this phenomenon and has excellent coating properties.

■There is no change in adhesive strength due to differences in film thickness.

Paints containing gold mud chelate rapidly decrease in adhesive strength as the film thickness increases, but in the paint of the present invention, the adhesive strength is not dependent on thickness and exhibits strong adhesive strength no matter the film thickness.

■Film properties do not deteriorate.

There is no adverse effect on the properties of the fluoropolymer film due to the addition of organic silicate.

As described above, the paint of the present invention has various characteristics, and as a result, it can be applied to metals, wood, plastics, ceramics, etc. using a brush, spray, roller coater, etc. in the same way as ordinary liquid paints.
Apply to surfaces such as paper and glass. The cured film has excellent weather resistance, chemical resistance, solvent resistance, water resistance, heat resistance, and low friction, as well as excellent transparency and gloss.

Claims (2)

[Claims] (1) Adhesiveness characterized by consisting of (I) a solvent-soluble fluoropolymer that can be cured at room temperature and which contains a fluoroolefin and vinyl ether as essential components, (II) an organic silicate, and (III) an organic solvent. Good fluorine paint. (2) The fluorine-based paint according to claim 1, which contains a silanol catalyst.