WO2009123263A1 - 淡水域対応型防汚塗料組成物、その塗膜、および防汚方法 - Google Patents
淡水域対応型防汚塗料組成物、その塗膜、および防汚方法 Download PDFInfo
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- WO2009123263A1 WO2009123263A1 PCT/JP2009/056818 JP2009056818W WO2009123263A1 WO 2009123263 A1 WO2009123263 A1 WO 2009123263A1 JP 2009056818 W JP2009056818 W JP 2009056818W WO 2009123263 A1 WO2009123263 A1 WO 2009123263A1
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- antifouling
- paint composition
- coating film
- fresh water
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
- C09D5/1668—Vinyl-type polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D193/00—Coating compositions based on natural resins; Coating compositions based on derivatives thereof
- C09D193/04—Rosin
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1606—Antifouling paints; Underwater paints characterised by the anti-fouling agent
- C09D5/1612—Non-macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
Definitions
- the present invention relates to an antifouling paint composition for freshwater bodies, a coating film thereof, and an antifouling method, and more specifically, a ship constructed in a large river (freshwater) such as China and Vietnam as well as the ocean (saltwater).
- the present invention relates to a method for forming an antifouling coating film and an antifouling method for a substrate.
- an antifouling paint exclusively for marine vessels typified by a conventionally known cuprous oxide-containing hydrolyzable antifouling paint
- a ship used mainly in fresh water such as a large river
- the coating is applied.
- the film has a problem that the resistance to fresh water is not sufficient, and when a ship with such a coating is built at a shipyard in the river water area, the coating is noticeably softened, and in some cases In some cases, defects such as blistering, cracks, and peeling occurred.
- Patent Document 1 discloses an antifouling coating composition for solving such a problem as a sub-surface treated with a specific metal salt copolymer [A] and a higher fatty acid.
- a fresh water region antifouling paint composition comprising copper oxide [B] is disclosed.
- JP-A-2005-15531 Patent Document 2
- JP-A-2006-152205 Patent Document 3
- An antifouling paint containing is disclosed, and as a hydrolyzable resin, an acrylic resin side chain,
- K is 0 or 1
- Y is a hydrocarbon
- M is a divalent metal
- A is an organic acid residue of a monobasic acid.
- R 1 , R 2 and R 3 are the same or different and each represents a hydrocarbon residue having 1 to 20 carbon atoms.
- antifouling paints are intended for antifouling of underwater structures (ships, fishing nets, etc.) used in seawater and are not expected to be used for freshwater bodies.
- the present invention has been made in view of such problems in the prior art, and is excellent in strength even after being immersed in fresh water, and even after being immersed in fresh water even when the coating interval is widened. Adhesion (adhesion between antifouling paints) is maintained, and after being immersed in fresh water, the wear level does not become excessive in seawater, and practical film consumption in seawater is maintained and prevented.
- An object of the present invention is to provide an antifouling coating composition capable of forming an antifouling coating film having excellent soiling properties, an antifouling coating film exhibiting such an effect, and a substrate provided with such an antifouling coating film It is said.
- Another object of the present invention is to provide a method for forming an antifouling coating film that exhibits the effects described above.
- an object of the present invention is to provide a substrate antifouling method capable of exhibiting the effects described above.
- the antifouling paint composition for freshwater bodies of the present invention (A) Formula (I): CH 2 ⁇ C (R 1 ) —COO—MO—CO—C (R 1 ) ⁇ CH 2 [In formula (I), M is magnesium, zinc or copper, and R 1 is independently a hydrogen atom or a methyl group. ]
- the metal salt bond-containing polymer (A) further contains a component unit (a2) derived from another unsaturated monomer (a2) that can be copolymerized with the monomer (a1).
- a component unit (a2) derived from another unsaturated monomer (a2) that can be copolymerized with the monomer (a1).
- the content of the component unit (a1) is 5 to 100% by weight
- the content of the component unit (a2) is 0 to 95% by weight.
- the antifouling paint composition for fresh water bodies contains the alicyclic hydrocarbon resin (B), preferably 0.1 to 100 parts by weight with respect to 100 parts by weight of the metal salt bond-containing polymer (A). To do.
- the fresh water-resistant antifouling paint composition may further contain an extender pigment, and zinc oxide is preferred as the extender pigment.
- the fresh water region antifouling paint composition may further contain an inorganic antifouling agent, and cuprous oxide is preferred as the inorganic antifouling agent.
- the fresh water region antifouling paint composition may further contain an organic antifouling agent.
- organic antifouling agent include pyrithione compounds, triorganoboron and amine complexes thereof, and 4,5-dichloro-2. Preference is given to at least one compound selected from the group consisting of -n-octyl-4-isothiazolin-3-one.
- the antifouling paint composition for freshwater bodies is another solid resin (that is, a resin solid at room temperature other than the metal salt bond-containing polymer (A) and the alicyclic hydrocarbon resin (B)).
- the other solid resin preferably contains a rosin and / or a terpene phenol resin.
- the fresh water region antifouling coating film of the present invention is characterized by being formed from the fresh water region antifouling coating composition.
- the substrate with antifouling coating film for fresh water according to the present invention is characterized in that the surface of the substrate is coated with the antifouling coating film for fresh water.
- This base material is preferably an underwater structure or a ship skin.
- the method for forming an antifouling coating film for a fresh water region on the surface of the substrate according to the present invention is applied by applying or impregnating the antifouling coating composition for a fresh water region onto the surface of the substrate, and then curing. It is characterized by forming a film.
- the antifouling method for a base material according to the present invention is characterized in that the antifouling coating film is formed by applying or impregnating the antifouling paint composition for fresh water bodies onto the surface of the base material, and then curing. Yes.
- an antifouling paint composition capable of forming an antifouling coating film that does not become excessively depleted in seawater and that has an appropriate antifouling property while maintaining adequate film wear in seawater. And a base material provided with such an antifouling coating film are provided.
- an antifouling coating film corresponding to a fresh water area on the surface of a substrate capable of exhibiting the effects as described above.
- the antifouling paint composition for fresh water according to the present invention the antifouling coating for fresh water, the substrate with the antifouling coating for fresh water, the antifouling coating for fresh water on the substrate surface
- the forming method and the antifouling method of the substrate will be described in more detail.
- antifouling paint composition for fresh water according to the present invention (hereinafter also simply referred to as “antifouling paint composition”) includes a metal salt bond-containing polymer (A) as described below, and an alicyclic hydrocarbon. Resin (B) is contained.
- the metal salt bond-containing polymer (hydrolyzable metal crosslinked polymer) (A) (hereinafter also simply referred to as “polymer (A)”) Formula (I): CH 2 ⁇ C (R 1 ) —COO—MO—CO—C (R 1 ) ⁇ CH 2
- M is magnesium, zinc or copper
- R 1 is independently a hydrogen atom or a methyl group.
- the component unit (a1) derived from the (meth) acrylic acid metal salt monomer (a1) represented by the formula (hereinafter also simply referred to as “monomer (a1)”) is contained.
- This component unit (a1) is mainly mainly
- the monomer (a1) may be contained in the obtained polymer without necessarily using the (meth) acrylic acid metal salt monomer (a1) as a monomer during the production of the metal salt bond-containing polymer (A).
- the production method of the polymer (A) is not particularly limited.
- Component unit (a1) may be included singly or in combination of two or more.
- the component unit (a1) may include a component unit derived from zinc (meth) acrylate and a component unit derived from copper (meth) acrylate.
- the metal salt bond-containing polymer (A) can be copolymerized with this monomer (a1). Having the component unit (a2) derived from the “mer (a2)” is desirable in terms of adjusting the elution rate of the resin.
- Examples of the “other unsaturated monomer (a2)” include the following monobasic acid metal (meth) acrylate (a21) and other unsaturated monomer (a22).
- this metal salt bond-containing polymer (A) is derived from the following monobasic acid metal (meth) acrylate (a21) in addition to the component unit (a1) derived from the monomer (a1).
- the component unit (a21) may be present, or the component unit (a22) derived from another unsaturated monomer (a22) may be present.
- These component unit (a21) and component unit ( Both of a22) may exist.
- the monobasic metal (meth) acrylate (a21) is represented by the following formula (II).
- R 2 is a non-polymerizable monovalent organic group
- R 3 is a hydrogen atom or a methyl group.
- the organic group R 2 is a monovalent saturated aliphatic group having 2 to 30 carbon atoms, preferably 9 to 20 carbon atoms; a monovalent unsaturated aliphatic group having 2 to 30 carbon atoms, preferably 9 to 20 carbon atoms.
- a hydrocarbon group such as a saturated or unsaturated monovalent alicyclic group having 3 to 20 carbon atoms, preferably 9 to 20 carbon atoms, a monovalent aromatic group having 6 to 30 carbon atoms, or a substituent thereof.
- monobasic acids comprising a monovalent saturated or unsaturated aliphatic group having 9 to 20 carbon atoms, a saturated or unsaturated alicyclic hydrocarbon group having 9 to 20 carbon atoms, or a substituted product thereof.
- organic acid residues are preferred from the viewpoint of resin viscosity, elution of the resin in the coating film, and storage stability of the paint.
- the organic group R 2 is represented by Versatic acid (R a R b R c C—COOH (R a , R b and R c are each independently an alkyl group)) and has 9 to 11 carbon atoms. (Mainly a mixture of 10) carboxylic acids), palmitic acid, stearic acid, isostearic acid, oleic acid, linoleic acid, linolenic acid, abietic acid, neoabietic acid, pimaric acid, dehydroabietic acid, 12-hydroxystearic acid, An organic acid residue (R 2 ) formed from a monobasic acid (R 1 COOH) such as naphthenic acid is an antifouling coating composition obtained from the viewpoint of ease of synthesis of the metal salt bond-containing polymer (A).
- the metal salt-bonded polymer (A) can be gradually hydrolyzed from the coating film formed from the above to exhibit antifouling properties, and the environmental load when hydrolyzed is small, and the durability of the antifouling effect High point, table Good renewability, preferably the like of excellent recoatability on such repair painting.
- the monobasic acid metal (meth) acrylate (a21) is not necessarily used as a monomer when the metal salt bond-containing polymer (A) having the component unit (a21) derived from the monomer (a21) is produced.
- the production method of the polymer (A) is not particularly limited.
- Examples of the “other unsaturated monomer (a22)” include unsaturated compounds such as alkyl (meth) acrylates, alkoxyalkyl (meth) acrylates, and hydroxyalkyl (meth) acrylates. 1 to 20 alkyl (meth) acrylates, alkoxyalkyl (meth) acrylates having 1 to 20 carbon atoms in the alkoxy group and 1 to 20 carbon atoms in the alkylene group, hydroxyalkyl having 1 to 20 carbon atoms in the hydroxyalkyl group (Meth) acrylate is preferred.
- alkyl (meth) acrylate examples include methyl (meth) acrylate, ethyl (meth) acrylate, and butyl (meth) acrylate
- alkoxyalkyl (meth) acrylate examples include methoxymethyl (meth) acrylate, 2-methoxyethyl (meth) acrylate, ethoxymethyl (meth) acrylate, ethoxyethyl (meth) acrylate, butoxymethyl (meth) acrylate, 3-methoxy Butyl (meth) acrylate, 3-methyl-3-methoxybutyl (meth) acrylate and the like
- hydroxyalkyl (meth) acrylate examples include 2-hydroxyethyl (meth) acrylate.
- methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, and 2-hydroxyethyl (meth) acrylate are coating film properties. From the viewpoint of sustaining elution of the resin from the coating film.
- the component unit (a1) is usually 5 to 100% by weight (the total amount of the component units in the polymer (A) is 100% by weight. The same applies hereinafter). ), Preferably 5 to 99.9% by weight, more preferably 20 to 99.9% by weight, and the component unit (a2) is usually 0 to 95% by weight, preferably 0.1 to 95% by weight. %, More preferably in an amount of 0.1 to 80% by weight, from the viewpoint of easy adjustment of the elution rate of the resin in the coating film.
- the component unit (a21) derived from the monobasic metal (meth) acrylate (a21) is, for example, 0 to 90% by weight, and other unsaturated components.
- the component unit (a22) derived from the monomer (a22) is contained in an amount of, for example, 100 to 10% by weight.
- the number average molecular weight Mn of the metal salt bond-containing polymer (A) (polystyrene equivalent value; the same applies hereinafter; measured by GPC; measurement conditions: column; Super H2000 + H4000) is usually 1,000 to 100,000 (100,000). ), Preferably 1,000 to 10,000 (10,000) in view of the resin viscosity and the elution rate of the resin in the coating film.
- the total content of magnesium (Mg), zinc (Zn) and copper (Cu) in the metal salt bond-containing polymer (A) is usually 0.5 to 20% by weight, preferably 5 to 20% by weight. % (The amount of the metal salt bond-containing polymer (A) is 100% by weight) is desirable in that the resin viscosity, the storage stability of the paint, and the elution of the resin in the coating film are good.
- the metal salt bond-containing polymer (A) can be produced by a conventionally known method.
- (Method 1) A method for producing the metal salt bond-containing polymer (A) by polymerizing the monomer (a1) together with the monomer (a2) as necessary;
- the antifouling coating composition of the present invention has an alicyclic hydrocarbon resin (B) having at least one functional group selected from the group consisting of an ester group, a hydroxyl group and a carboxyl group.
- ester group examples include an RCOO- group and an ROCO- group (R is an alkyl group).
- alkyl group R include an alkyl group having 1 to 10 carbon atoms.
- the alicyclic hydrocarbon resin (B) may have only one or two or more of ester groups, hydroxyl groups and carboxyl groups.
- the alicyclic hydrocarbon resin (B) has the following formula (b1):
- M is an integer from 1 to 20. It may have a structural unit having a norbornene skeleton represented by:
- alicyclic hydrocarbon resin (B) for example, alicyclic hydrocarbon resins described in JP-A-2006-152205, [0029] to [0043] can be used.
- the hydrogen resin (B) can be obtained, for example, by copolymerizing a cyclopentadiene oligomer and a vinyl compound having a desired functional group under normal reaction conditions.
- N is an integer of 0 to 20
- dicyclopentadiene tricyclopentadiene, tetracyclopentadiene, pentacyclopentadiene, hexacyclopentadiene, and the like. These may be used alone or in combination of two or more. May be used in combination.
- the cyclopentadiene oligomer can be obtained by heat treatment of dicyclopentadiene (conditions: for example, 0.1 to 60 hours, temperature of 125 to 250 ° C.).
- vinyl compounds having an ester group examples include vinyl alcohol esters such as vinyl acetate and vinyl propionate, and (meth) acrylate esters such as methyl (meth) acrylate, ethyl (meth) acrylate, and butyl (meth) acrylate.
- vinyl compound having a hydroxyl group examples include allyl alcohol and a hydroxyl group-containing vinyl compound such as hydroxyethyl (meth) acrylate;
- the vinyl compound having a carboxylic acid group includes (meth) acrylic acid, maleic anhydride, Examples thereof include vinyl carboxylic acids such as maleic acid.
- These vinyl compounds may be used individually by 1 type, and may be used in combination of 2 or more type.
- the cycloaliphatic hydrocarbon resin (B) can be obtained by further reacting a vinyl compound with a cyclopentadiene oligomer into which a functional group has been introduced. If the resin (B) has an ester group, an acid can be obtained. The said alicyclic hydrocarbon resin (B) can also be obtained by half esterification of an anhydride.
- the number average molecular weight (value in terms of polystyrene by GPC (gel permeation chromatography)) of the alicyclic hydrocarbon resin (B) is preferably 150 to 2000, more preferably 200 to 1000. If it is smaller than the above range, it may not contribute to improving the strength of the resulting coating film, and if it is larger than the above range, the leveling property at the time of forming the coating film may be lowered.
- the softening point (JIS K 2207 ring ball type) of the alicyclic hydrocarbon resin (B) is preferably 60 to 150 ° C., more preferably 75 to 150 ° C. If it is smaller than the above range, it may not contribute to the improvement of the strength of the resulting coating film, and if it is larger than the above range, the leveling property and flexibility when forming the coating film may be lowered.
- the saponification value (JIS K 0070) is preferably 100 to 300 mgKOH / g, more preferably 150 to 200 mgKOH / g. If it is smaller than the above range, the compatibility with the paint component may be inferior, and if it is larger than the above range, it may be difficult to adjust the solubility in seawater that is not strongly hydrophilic due to the ester group. .
- the hydroxyl value is preferably 50 to 300 mgKOH / g, more preferably 200 to 250 mgKOH / g. If it is smaller than the above range, it may be difficult to ensure the fine solubility in seawater, and if it is larger than the above range, the compatibility with the paint component may be inferior.
- the acid value is preferably 30 to 250 mgKOH / g, more preferably 50 to 200 mgKOH / g.
- the acid value is preferably 30 to 250 mgKOH / g, more preferably 50 to 200 mgKOH / g.
- it is smaller than the above range it may be difficult to ensure fine solubility in seawater.
- it is larger than the above range the alicyclic hydrocarbon resin (B) becomes too hard and fragile. There is.
- the alicyclic hydrocarbon resin (B) may be used alone or in combination of two or more.
- the content of the alicyclic hydrocarbon resin (B) in the antifouling coating composition of the present invention is such that the metal salt bonding is performed from the viewpoint of reducing swelling of the coating film, preventing the occurrence of swelling, and maintaining the wear of the coating film.
- the amount is preferably 0.1 to 100 parts by weight, more preferably 0.1 to 50 parts by weight, still more preferably 0.1 to 25 parts by weight with respect to 100 parts by weight of the containing polymer (A) (solid content). .
- the freshwater body antifouling paint composition of the present invention further contains the following components: You may do it.
- the antifouling coating composition of the present invention may contain an inorganic antifouling agent.
- an inorganic antifouling agent it is desirable in that the obtained coating film is excellent in antifouling property, and is excellent in physical properties of the coating film, particularly in crack resistance.
- the inorganic antifouling agent examples include copper and / or an inorganic copper compound.
- the average particle size and particle size distribution of the copper and / or inorganic copper compound are not particularly limited.
- the copper and / or inorganic copper compound has an average particle size of 6 to 50 ⁇ m, There is a tendency that an antifouling coating film excellent in long-term antifouling property can be obtained because of excellent persistence of decomposition, continuous coating film consumption (constant coating film consumption) for a long period of time.
- the inorganic copper compound may be any of inorganic copper compounds, for example, cuprous oxide, copper thiocyanide (cuprous thiocyanate, rhodan copper), basic copper sulfate, basic copper acetate, base Copper carbonate, cupric hydroxide, and the like, and such a copper compound can be used alone or in combination of two or more in place of copper.
- inorganic copper compounds for example, cuprous oxide, copper thiocyanide (cuprous thiocyanate, rhodan copper), basic copper sulfate, basic copper acetate, base Copper carbonate, cupric hydroxide, and the like, and such a copper compound can be used alone or in combination of two or more in place of copper.
- cuprous oxide is desirable in that the obtained coating film is excellent in antifouling property, the coating film properties are particularly excellent in crack resistance, and the like.
- the content of the inorganic antifouling agent is usually 0.1 to 500 parts by weight, preferably 0.1 to 300 parts by weight with respect to 100 parts by weight of the polymer (A) (solid content). If it exists, it is desirable at the point that the coating film obtained is excellent in antifouling property, the coating film physical property surface, especially crack resistance. On the other hand, if it is less than this range, the coating film tends not to exhibit a sufficient antifouling effect, and the renewability of the coating film surface tends to be inhibited. There is a tendency for cracks to occur.
- the antifouling coating composition of the present invention may contain an organic antifouling agent.
- the antifouling paint composition of the present invention contains an organic antifouling agent, the resulting coating film exhibits antifouling ability particularly in highly fouled sea areas where the fouling is severe, durability of the antifouling effect, surface renewal It is preferable at the point that it is excellent in property.
- the organic antifouling agent is a metal-pyrithione represented by the following formula [III] and its derivative (pyrithione compound) [wherein R 1 to R 4 are each independently a hydrogen atom, An alkyl group, an alkoxy group or a halogenated alkyl group, M represents a metal such as Cu, Na, Mg, Zn, Ca, Ba, Pb, Fe, Al, etc. Then, as M, Cu and Zn are preferable. n represents a valence. ]:
- At least one organic antifouling agent selected from the group consisting of triorganoboron and its amine complex, and 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one. This is particularly preferred from the viewpoint of excellent antifouling properties of the film and storage stability of the paint.
- the organic antifouling agent is copper pyrithione, zinc pyrithione, triphenylboron pyridine complex, 4-isopropylpyridine-diphenylmethylborane complex and 4,5-dichloro-2-n-octyl-4-isothiazoline- It is particularly preferred that at least one selected from the group consisting of 3-ones is excellent in terms of a good balance between the storage stability of the paint, the coating film wear resistance and the antifouling property.
- the content of the organic antifouling agent is usually 0.1 to 200 parts by weight, preferably 0.1 to 100 parts by weight, with respect to 100 parts by weight of the polymer (A) (solid content).
- the antifouling property of the resulting antifouling coating film in particular, the durability thereof is good (that is, the degree of coating film consumption is low), the load on the environment is low, and the coating film water resistance is excellent. Desirable in terms.
- the extender pigment has a low refractive index and is transparent and does not hide the coated surface when kneaded with oil or varnish.
- Examples of such extender pigments include zinc oxide (zinc white), talc, silica, mica, Examples include clay, diatomaceous earth, calcium carbonate, kaolin, alumina white, which is also used as an anti-settling agent, white carbon, aluminum hydroxide, magnesium carbonate, barium carbonate, barium sulfate, which are also used as a matting agent.
- zinc oxide (zinc white) is preferable because it improves the strength of the coating film
- an extender pigment selected from the group consisting of talc, clay, diatomaceous earth, and silica is preferable because it reduces the internal stress of the coating film.
- extender pigments may be used alone or in combination of two or more. Moreover, the wear degree of a coating film can be adjusted with the kind of extender.
- the content of the extender pigment is usually 0.1 to 400 parts by weight, preferably 0.1 to 300 parts by weight with respect to 100 parts by weight of the metal salt bond-containing polymer (A).
- coloring pigment conventionally known various organic and inorganic pigments can be used.
- organic pigments examples include carbon black, naphthol red, and phthalocyanine blue.
- inorganic pigments examples include bengara, barite powder, titanium white, yellow iron oxide, and the like.
- Various colorants such as dyes may also be included.
- the color pigment as the inorganic color pigment, any of petals, titanium white, and yellow iron oxide is particularly preferable in terms of coloring power, and the organic pigment also has a particularly vivid color coating film. It is preferable in that it can be provided and has less discoloration.
- the content of the color pigment is usually about 0.1 to 200 parts by weight, preferably about 0.1 to 100 parts by weight with respect to 100 parts by weight of the metal salt bond-containing polymer (A).
- the antifouling coating composition of the present invention may further contain a sagging prevention / antisettling agent (fading agent).
- anti-sagging and anti-settling agent examples include Al, Ca, Zn amine salts, stearate salts, lecithin salts, alkyl sulfonate salts, etc .; polyethylene wax, amide wax, hydrogenated castor oil wax Organic waxes such as polyamide wax and oxidized polyethylene wax; synthetic fine silica and the like are commercially available products such as “DISPARON 305”, “DISPARON 4200-20”, “DISPARON” manufactured by Enomoto Kasei Co., Ltd. A630-20X ".
- the content of the anti-sagging / precipitating agent (fading agent) is usually 0.1 to 100 parts by weight, preferably 0.1 to 50 parts by weight with respect to 100 parts by weight of the metal salt bond-containing polymer (A). About a part.
- a solid resin other than the polymer (A) (also referred to as “other solid resin” in the present invention) as a coating film forming component is contrary to the object of the present invention.
- Such “other solid resins” include difficult or water-insoluble resins and water-soluble resins, and terpene phenol resins can be used as long as they are difficult or water-insoluble resins.
- Acrylic resin acrylic silicone resin, unsaturated polyester resin, fluororesin, polybutene resin, silicone rubber, urethane resin (rubber), epoxy resin, polyamide resin, vinyl chloride copolymer resin, chlorinated rubber (resin), chlorinated olefin Resin, styrene / butadiene copolymer resin, ethylene-vinyl acetate copolymer resin, vinyl chloride resin, alkyd resin, coumarone resin, petroleum resin, etc. It is.
- the terpene phenol resin is insoluble in water but has little adverse effect on the wear of the coating film. Examples of commercially available terpene phenol resins include terpene phenol YP90L (trade name, manufactured by Yasuhara Chemical Co., Ltd.).
- examples include rosin (eg, trade name “Rosin WW”), monocarboxylic acid, and salts thereof.
- the monocarboxylic acid include fatty acids having about 9 to 19 carbon atoms and naphthenic acid.
- examples of the monocarboxylic acid salt include a Cu salt, a Zn salt, and a Ca salt.
- the rosin include gum rosin, wood rosin, tall oil rosin and the like, and any of them can be used in the present invention.
- These water-soluble resins can be used alone or in combination of two or more.
- solid resins are preferably rosin and terpene phenol resins from the viewpoint of maintaining the coating film wearability.
- the content of the other solid resin is usually about 0.1 to 100 parts by weight, preferably about 0.1 to 50 parts by weight with respect to 100 parts by weight of the metal salt bond-containing polymer (A).
- the antifouling coating composition of the present invention includes a thixotropic agent, an inorganic dehydrating agent (stabilizer), an antifungal agent, an anti-aging agent, an antioxidant, an antistatic agent, a flame retardant, a heat A conductivity improver, an adhesion-imparting agent, and the like may be further included.
- a thixotropic agent an inorganic dehydrating agent (stabilizer), an antifungal agent, an anti-aging agent, an antioxidant, an antistatic agent, a flame retardant, a heat A conductivity improver, an adhesion-imparting agent, and the like may be further included.
- the above-described components are usually dissolved or dispersed in a solvent.
- a solvent for example, various solvents such as aliphatic, aromatic, ketone, ester, and ether that are usually blended in antifouling paints can be used.
- the aromatic solvent include xylene and toluene.
- the ketone solvent include methyl isobutyl ketone (MIBK).
- the ether solvent include propylene glycol monomethyl ether, Examples include propylene glycol monomethyl ether acetate (PMAC).
- the antifouling coating composition of the present invention comprises the above-mentioned polymer (A) and alicyclic hydrocarbon resin (B), which are essential components, and other components described above as raw materials, if necessary. These raw materials can be blended at once or in any order, and can be produced by stirring and mixing, etc., using a conventionally known method as appropriate.
- a conventionally known mixing / stirring device such as a loss mixer, a planetary mixer, or a universal Shinagawa stirrer can be used.
- the freshwater region-compatible antifouling coating film of the present invention is formed from the freshwater region-compatible antifouling coating composition.
- the substrate with antifouling coating film for fresh water according to the present invention is characterized in that the surface of the substrate is coated with the antifouling coating film for fresh water.
- This base material is preferably an underwater structure or a ship skin.
- the method for forming an antifouling coating film for a fresh water region on the surface of the substrate according to the present invention is applied by applying or impregnating the antifouling coating composition for a fresh water region onto the surface of the substrate, and then curing. It is characterized by forming a film.
- the base material antifouling method of the present invention is characterized in that the antifouling coating film is formed by applying or impregnating the antifouling paint composition for fresh water bodies onto the surface of the base material, and then curing. .
- a coating film formed by applying and curing the antifouling paint composition for fresh water according to the present invention on the surface of a base material such as a hull or an underwater structure is water (ie, in seawater or freshwater), for example, river water in China or the like.
- water ie, in seawater or freshwater
- river water for example, river water in China or the like.
- it can be applied not only to seawater but also to freshwater. It is suitable as a "corresponding type" coating film.
- the antifouling paint composition for fresh water is a variety of organisms that live in seawater or freshwater, for example, shellfish such as barnacles, mussels and oysters that live in seawater, and coelenterates such as cell plastics. New shipbuilding in seawater (saltwater) and freshwater (freshwater) areas, and hulls operated and operated in these seawater and freshwater areas. It can also be used for antifouling treatment for underwater structures.
- Antifouling treatment of ship hulls, particularly ship outer plates that come into contact with fresh water, and antifouling treatment of the surface of underwater structures, particularly underwater structures, are carried out on the surface of a hull or freshwater underwater structure constructed in fresh water. It is performed by applying the antifouling paint composition corresponding to freshwater bodies and forming an antifouling coating film.
- the details of the raw material of the antifouling paint composition are as follows.
- Solid content refers to the heating residue when the solvent, etc. is volatilized by heating and drying the reaction mixture containing the polymer, solvent, etc., paint, uncured coating film, etc., usually resin content and pigment It becomes a coating film forming component.
- the monomer etc. (Example: Table 2) which are contained in the paint etc. and can react and form resin (solid content) are also included in the solid content and calculated.
- weight average molecular weight Mw The weight average molecular weight Mw of a resin such as a metal-containing resin was eluted with DLC (dimethylformamide) to which 20 mM LiBr was added using two TSK-gel ⁇ -type separation columns ( ⁇ -M) using HLC-8120GPC. It was used as a liquid and measured. The weight average molecular weight (Mw) was calculated
- the number average molecular weight Mn of the resin was obtained as polystyrene conversion by GPC as described above.
- the solid content (metal-containing monomer A-1) in the obtained mixture solution A was 44.8% by weight.
- the composition and the like are shown in Table 2.
- the solid content (metal-containing monomer A-2) in the obtained mixture solution E was 44.6% by weight.
- the composition and the like are shown in Table 2.
- MMA methyl methacrylate
- EA ethyl acrylate
- 2-MEA 2-methoxyethyl acrylate
- Example 1 ⁇ Preparation of antifouling paint composition> A plastic container having a capacity of 1000 ml was charged with xylene (88 g) and Solvesso 150 (32 g) as a solvent, and then the metal salt bond-containing polymer (A1) (280 g) and alicyclic hydrocarbon resin obtained in Production Example 4 (Quinton 1500, 4 g) was added and dispersed using a paint shaker until uniform.
- talc FC-1 (136g), zinc oxide (144g), Nova Palm Red F5RK (4g), RED IRON OXIDE BB (12g), PK boron (56g), Zinc Omadine (16g), Disparlon4200-20X (8g) And 200 g of glass beads were added, and these were dispersed for 1 hour using a paint shaker.
- Disparlon® A630-20X (16 g) was added, and the mixture obtained by dispersing for 10 minutes with a paint shaker was filtered through an 80 mesh filter screen to prepare an antifouling paint composition.
- Example 2 ⁇ State of paint film after immersion in fresh water>
- the antifouling coating composition obtained in Example 1 was applied directly to a hard vinyl chloride resin plate (50 mm ⁇ 50 mm ⁇ thickness 1.5 mm) that had not been primed so that the dry film thickness would be 300 ⁇ m. And then dried.
- the obtained test plate with a coating film was immersed in fresh water at 35 ° C. for 1 month, and then the appearance of the coating film was visually observed and evaluated according to the following criteria. The results are shown in Table 4.
- Example 2 ⁇ Degree of wear of antifouling paint film after immersion in fresh water in sea water>
- the antifouling paint composition obtained in Example 1 was applied directly to a hard vinyl chloride resin plate (50 mm ⁇ 50 mm ⁇ thickness 1.5 mm) that had not been primed so that the dry film thickness would be 150 ⁇ m. And then dried.
- the obtained test plate with a coating film was immersed in fresh water at 35 ° C. for one month, and then attached to a rotating drum installed in seawater in Nagasaki Bay, Nagasaki Prefecture, and rotated at a peripheral speed of 15 knots.
- Consumable film thickness total amount ⁇ m of coating film consumption immediately after installation, coating film consumption level was measured for 4 months. The results are shown in Table 4.
- An epoxy primer (epoxy AC paint, trade name “Banno 500”, manufactured by China Paint Co., Ltd.) is applied to a sandblasted steel plate (70 mm ⁇ 150 mm ⁇ thickness 1.6 mm) so that the dry film thickness becomes 150 ⁇ m.
- an epoxy binder (epoxy binder paint trade name “Banno 500N”, manufactured by China Paint Co., Ltd.) was applied so that the dry film thickness was 100 ⁇ m, and further obtained in Example 1.
- a test plate was prepared by applying the antifouling coating composition so that the dry film thickness was 100 ⁇ m. The coating interval of each coating film was 1 day.
- the test plate was set on a sunshine / weather meter device, irradiated with a sunshine carbon arc light source for 78 hours, and the antifouling coating composition obtained in Example 1 was again applied onto the coating film so that the dry film thickness was 100 ⁇ m. Painted and dried.
- the obtained test plate with a coating film was immersed in fresh water at 40 ° C., and adhesion after 30 days (knife test) was confirmed. The results are shown in Table 4.
- Example 2 ⁇ Degree of paint wear in seawater>
- the antifouling paint composition obtained in Example 1 was applied directly to a hard vinyl chloride resin plate (50 mm ⁇ 50 mm ⁇ thickness 1.5 mm) that had not been primed so that the dry film thickness would be 150 ⁇ m.
- the test plates with coatings obtained were attached to a rotating drum installed in seawater (in Nagasaki Bay, Nagasaki Prefecture), rotated at a peripheral speed of 15 knots, and a consumable film thickness (installed every month)
- the total amount [mu] m of coating film consumption immediately afterwards, and the degree of coating film consumption) was measured for 4 months. The results are shown in Table 4.
- Example 2 the antifouling paint composition obtained in Example 1 was applied once so that the dry film thickness was 150 ⁇ m and dried to prepare a test plate with a coating film.
- the coating interval was set to 1 day / 1 coat between any paint (eg, “Banno 500”) and the paint (eg, “Banno 500N”) coated on the surface thereof.
- test plate was dried at room temperature for 7 days and then immersed in Nagasaki Bay, Nagasaki Prefecture for 6 months. During that period, the adhesion area (%) of attached organisms was examined every month. The results are shown in Table 4.
- evaluation criteria for static antifouling properties are as follows.
- Examples 2 to 14, Comparative Examples 1 to 4 An antifouling paint composition was produced in the same manner as in Example 1 except that the blending composition was changed as shown in Table 2, and each antifouling paint composition was evaluated in the same manner as in Example 1. The results are shown in Table 4.
Abstract
Description
で表される基、または
で表される基を有するアクリル樹脂が記載されている。
(A)式(I):CH2=C(R1)-COO-M-O-CO-C(R1)=CH2
[式(I)中、Mはマグネシウム、亜鉛または銅であり、R1はそれぞれ独立に水素原子またはメチル基である。]
で表される(メタ)アクリル酸金属塩単量体(a1)から誘導される成分単位(a1)を含有する金属塩結合含有重合体と、
(B)エステル基、水酸基およびカルボキシル基から選ばれる少なくとも1つの基を有する脂環式炭化水素樹脂と
を含有することを特徴としている。
本発明に係る淡水域対応型防汚塗料組成物(以下、単に「防汚塗料組成物」とも言う。)は、下記のような金属塩結合含有重合体(A)と、脂環式炭化水素樹脂(B)とを含有している。
前記金属塩結合含有重合体(加水分解性金属架橋重合体)(A)(以下、単に「重合体(A)」とも言う。)は、
式(I):CH2=C(R1)-COO-M-O-CO-C(R1)=CH2
[式(I)中、Mはマグネシウム、亜鉛または銅であり、R1はそれぞれ独立に水素原子またはメチル基である。]
で表される(メタ)アクリル酸金属塩単量体(a1)(以下、単に「単量体(a1)」とも言う。)から誘導される成分単位(a1)を含有している。
[式(II)中、Mはマグネシウム、亜鉛または銅であり、R2は非重合性の1価の有機基であり、R3は水素原子またはメチル基である。]
前記有機基R2としては、炭素原子数2~30、好ましくは9~20の一価の飽和脂肪族基;炭素原子数2~30、好ましくは9~20の一価の不飽和脂肪族基;炭素数3~20、好ましくは9~20の飽和または不飽和の一価の脂環族基;炭素数6~30の一価の芳香族基;などの炭化水素基、またはそれらの置換体からなる一塩基酸の有機酸残基などが挙げられる。
前記アルコキシアルキル(メタ)アクリレートとしては、メトキシメチル(メタ)アクリレート、2-メトキシエチル(メタ)アクリレート、エトキシメチル(メタ)アクリレート、エトキシエチル(メタ)アクリレート、ブトキシメチル(メタ)アクリレート、3-メトキシブチル(メタ)アクリレート、3-メチル-3-メトキシブチル(メタ)アクリレート等が挙げられ、
前記ヒドロキシアルキル(メタ)アクリレートとしては、2-ヒドロキシエチル(メタ)アクリレート等が挙げられる。
(方法1):前記単量体(a1)を、必要に応じて前記単量体(a2)と共に、重合して金属塩結合含有重合体(A)を製造する方法;
(方法2):2価金属ジ(メタ)アクリレートを誘導可能な共重合用モノマー(メタクリル酸メチル(MMA)等のアルキル(メタ)アクリレート、アクリル酸、メタクリル酸など)と、2価金属酸化物(ZnO、MgO、CuOなど)と、水とを溶媒(PGM、n-BuOH、キシレンなど)中で接触(反応)させ、次いで、得られた反応混合物(金属含有反応物)と、前記単量体(a22)と、必要に応じてさらに前記単量体(a21)とを、開始剤(AIBN、AMBN、t-ブチルパーオクトエートなど)、連鎖移動剤等の存在下に共重合反応させることにより、金属塩結合含有重合体(A)を製造する方法
などが挙げられる。
本発明の防汚塗料組成物は、エステル基、水酸基およびカルボキシル基からなる群から選択される少なくとも1の官能基を有する脂環式炭化水素樹脂(B)を有する。
で表されるノルボルネン骨格を有する構成単位を有していてもよい。
で表されるシクロペンタジエンオリゴマー、たとえば、ジシクロペンタジエン、トリシクロペンタジエン、テトラシクロペンタジエン、ペンタシクロペンタジエン、ヘキサシクロペンタジエンなどを挙げることができ、これらは1種単独で用いてもよく、2種以上を組み合わせて用いてもよい。前記シクロペンタジエンオリゴマーは、ジシクロペンタジエンの熱処理(条件:たとえば0.1~60時間、125~250℃の温度)によって得ることができる。
本発明の防汚塗料組成物は、無機防汚剤を含んでも良い。本発明の防汚塗料組成物が無機防汚剤を含有していると、得られる塗膜が防汚性に優れる、塗膜物性面特に耐クラック性に優れるなどの点で望ましい。
本発明の防汚塗料組成物は、有機防汚剤を含んでも良い。本発明の防汚塗料組成物が有機防汚剤を含有していると、得られる塗膜が特に汚損の激しい高汚損海域での防汚力を発揮する、防汚効果の持続性、表面更新性に優れる、という点で好ましい。
体質顔料は、屈折率が小さく、油やワニスと混練した場合に透明で被塗面を隠さないような顔料であり、かかる体質顔料としては、酸化亜鉛(亜鉛華)、タルク、シリカ、マイカ、クレー、珪藻土、沈降防止剤としても用いられる炭酸カルシウム、カオリン、アルミナホワイト、艶消し剤としても用いられるホワイトカーボン、水酸化アルミニウム、炭酸マグネシウム、炭酸バリウム、硫酸バリウムなどが挙げられる。これらの中では、塗膜の強度を向上させることから酸化亜鉛(亜鉛華)が好ましく、また塗膜内部応力を軽減させることからタルク、クレー、珪藻土およびシリカからなる群から選ばれる体質顔料が好ましい。
着色顔料としては、従来公知の有機系、無機系の各種顔料を用いることができる。
本発明の防汚塗料組成物は、タレ止め・沈降防止剤(搖変剤)をさらに含有していてもよい。
本発明の防汚塗料組成物には、塗膜形成成分として、前記重合体(A)以外の固体状樹脂(本発明において「他の固体状樹脂」ともいう。)が本発明の目的に反しない範囲で含まれていてもよく、このような「他の固体状樹脂」としては、難または非水溶性樹脂および水溶性樹脂が挙げられ、難または非水溶性樹脂であれば、テルペンフェノール樹脂、アクリル樹脂、アクリルシリコーン樹脂、不飽和ポリエステル樹脂、フッ素樹脂、ポリブテン樹脂、シリコーンゴム、ウレタン樹脂(ゴム)、エポキシ樹脂、ポリアミド樹脂、塩化ビニル系共重合樹脂、塩化ゴム(樹脂)、塩素化オレフィン樹脂、スチレン・ブタジエン共重合樹脂、エチレン-酢酸ビニル共重合樹脂、塩化ビニル樹脂、アルキッド樹脂、クマロン樹脂、石油樹脂などが挙げられる。前記テルペンフェノール樹脂は、非水溶性であるが塗膜消耗性への悪影響が少ない。前記テルペンフェノール樹脂の市販品としては、テルペンフェノールYP90L(商品名、ヤスハラケミカル(株)製)などが挙げられる。
本発明の防汚塗料組成物には、上記成分のほかに、チクソトロピー性付与剤、無機脱水剤(安定剤)、防カビ剤、老化防止剤、酸化防止剤、帯電防止剤、難燃剤、熱伝導改良剤、接着性付与剤などがさらに含まれていても良い。
本発明の防汚塗料組成物において、前述した各成分は、通常、溶剤に溶解若しくは分散している。この溶剤としては、たとえば、脂肪族系、芳香族系、ケトン系、エステル系、エーテル系などの、通常、防汚塗料に配合されるような各種溶剤を用いることができる。前記芳香族系溶剤としては、たとえば、キシレン、トルエン等が挙げられ、ケトン系溶剤としては、たとえば、メチルイソブチルケトン(MIBK)等が挙げられ、エーテル系溶剤としては、たとえば、プロピレングリコールモノメチルエーテル、プロピレングリコールモノメチルエーテルアセテート(PMAC)等が挙げられる。
本発明の防汚塗料組成物は、必須成分である前記金属塩結合含有重合体(A)および脂環式炭化水素樹脂(B)、ならびに必要に応じて前述した他の成分を原料として、これらの原料を一度に、または任意の順序で配合し、従来公知の方法を適宜利用して攪拌・混合等することにより製造することができる。
本発明の淡水域対応型防汚塗膜は、前記淡水域対応型防汚塗料組成物から形成されてなることを特徴としている。
ガードナー粘度は、特開2003-55890号公報等にも記載されているように、JIS K7233の4.3に準じて、樹脂分濃度35重量%で25℃で測定した。
固形分は、ポリマー、溶剤等が含まれた反応混合物、塗料、未硬化塗膜等を加熱、乾燥等して溶剤等を揮散させたときの加熱残分をいい、通常、樹脂分さらには顔料などを含み、塗膜形成成分となる。なお、塗料等に含まれ、反応して樹脂(固形分)を形成し得るモノマー等(例:表2)も、固形分に含めて計算する。
なお、金属含有樹脂などの樹脂の重量平均分子量Mwは、HLC-8120GPCにより、TSK-gel αタイプの分離カラム(α-M)2本を用い、20mM LiBrを添加したDMF(ジメチルホルムアミド)を溶離液として用いて測定した。重量平均分子量(Mw)は、ポリスチレン換算として求めた。
(金属含有単量体A-1の製造)
冷却器、温度計、滴下ロートおよび攪拌機を備えた四つ口フラスコに、プロピレングリコールメチルエーテル(PGM)85.4部および酸化亜鉛40.7部を仕込み、攪拌しながら75℃に昇温した。続いて、滴下ロートからメタクリル酸メチル(MMA)50.0部、アクリル酸(AA)36.1部、水5部からなる混合物を3時間かけて等速滴下した。滴下終了後、反応溶液は乳白色状態から透明となった。さらに2時間攪拌した後プロピレングリコールメチルエーテル(PGM)を36部添加して、金属含有単量体A-1を含有する透明な混合物溶液Aを得た。
(金属含有単量体A-2の製造)
酸化亜鉛40.7部に替えて酸化マグネシウム20.2部を用いた以外は製造例1と同様にして、金属含有単量体A-2を含有する透明な混合物溶液Eを得た。
(金属塩結合含有重合体(A1)の製造)
冷却器、温度計、滴下ロートおよび攪拌機を備えた四つ口フラスコに、プロピレングリコールメチルエーテル15部、キシレン57部およびエチルアクリレート4部を仕込み、攪拌しながら100℃に昇温した。
(金属塩結合含有重合体(A2)の製造)
滴下工程Iにおける滴下成分を表3に示すように変更した以外は製造例3と同様にして、金属塩結合含有重合体(A2)を製造した。金属塩結合含有重合体(A2)および該重合体(A2)を含む反応混合物の物性を製造例3(重合体(A1)の製造例)と同様に評価した。結果を表3に示す。
<防汚塗料組成物の調製>
容量1000mlのポリ容器に、溶剤であるキシレン(88g)およびソルベッソ150(32g)を仕込み、次いで製造例4で得られた金属塩結合含有重合体(A1)(280g)および脂環式炭化水素樹脂(クイントン1500、4g)を加え、ペイントシェーカーを用いてこれらを均一になるまで分散させた。
実施例1で得られた防汚塗料組成物を、プライマー処理されていない硬質塩化ビニル樹脂板(50mm×50mm×厚さ1.5mm)に直接、その乾燥膜厚が300μm厚になるようにアプリケータで塗布し、乾燥させた。得られた塗膜付き試験板を、35℃の真水中に1ヶ月間浸漬した後、塗膜の外観を目視観察し、以下の基準で評価した。結果を表4に示す。
実施例1で得られた防汚塗料組成物を、プライマー処理されていない硬質塩化ビニル樹脂板(50mm×50mm×厚さ1.5mm)に直接、その乾燥膜厚が150μm厚になるようにアプリケータで塗布し、乾燥させた。得られた塗膜付き試験板を、35℃の真水中に1ヶ月間浸漬した後、長崎県長崎湾内の海水中に設置した回転ドラムに取り付け、周速15ノットで回転させ、1ヶ月毎の消耗膜厚(設置直後からの塗膜消耗度の合計量μm、塗膜消耗度)を4ヶ月間測定した。結果を表4に示す。
エポキシプライマー(エポキシAC塗料、商品名「バンノー500」、中国塗料(株)製)を、サンドブラスト処理鋼鈑(70mm×150mm×厚さ1.6mm)に、その乾燥膜厚が150μmになるように塗布し、次いでエポキシバインダー(エポキシ系バインダー塗料商品名「バンノー500N」、中国塗料(株)製)を、その乾燥膜厚が100μm厚となるように塗布し、さらに、実施例1で得られた防汚塗料組成物を、その乾燥膜厚が100μmになるように塗布して試験板を作成した。各塗膜の塗装間隔は、1日とした。その試験板をサンシャイン・ウエザーメーター装置にセットし、サンシャインカーボンアーク光源を78時間照射し、塗膜上に再度実施例1で得られた防汚塗料組成物を乾燥膜厚が100μmになるように塗付し、乾燥させた。得られた塗膜付き試験板を40℃の真水に浸漬し、30日後の付着性(ナイフテスト)を確認した。結果を表4に示す。
実施例1で得られた防汚塗料組成物を、プライマー処理されていない硬質塩化ビニル樹脂板(50mm×50mm×厚さ1.5mm)に直接、その乾燥膜厚が150μm厚になるようにアプリケータで塗布し、得られたこれらの塗膜付き試験板を(長崎県長崎湾内)の海水中に設置した回転ドラムに取り付け、周速15ノットで回転させ、1ヶ月毎の消耗膜厚(設置直後からの塗膜消耗度の合計量μm、塗膜消耗度)を4ヶ月間測定した。結果を表4に示す。
サンドブラスト処理鋼板(縦300mm×横100mm×厚さ3.2mm)に、エポキシ系防錆塗料(エポキシAC塗料、商品名「バンノー500」、中国塗料(株)製)をその乾燥膜厚が150μmとなるように塗布し、次いで、エポキシ系バインダー塗料(商品名「バンノー500N」、中国塗料(株)製)をその乾燥膜厚が100μm厚となるように塗布した。
0.5・・・水棲生物の付着面積が10%程度
1 ・・・水棲生物の付着面積が20%程度
2 ・・・水棲生物の付着面積が30%程度
3 ・・・水棲生物の付着面積が40%程度
4 ・・・水棲生物の付着面積が50%程度
5 ・・・水棲生物の付着面積が100%程度。
配合組成を表2に示すように変更した以外は実施例1と同様にして防汚塗料組成物を製造し、実施例1と同様の方法により、各防汚塗料組成物を評価した。結果を表4に示す。
Claims (16)
- (A)式(I):
CH2=C(R1)-COO-M-O-CO-C(R1)=CH2
[式(I)中、Mはマグネシウム、亜鉛または銅であり、R1はそれぞれ独立に水素原子またはメチル基である。]
で表される(メタ)アクリル酸金属塩単量体(a1)から誘導される成分単位(a1)を含有する金属塩結合含有重合体と、
(B)エステル基、水酸基およびカルボキシル基から選ばれる少なくとも1つの基を有する脂環式炭化水素樹脂と
を含有することを特徴とする淡水域対応型防汚塗料組成物。 - 前記金属塩結合含有重合体(A)が、前記単量体(a1)と共重合し得る他の不飽和単量体(a2)から誘導される成分単位(a2)をさらに含有する共重合体であり、前記成分単位(a1)の含有量が5~100重量%であり、前記成分単位(a2)の含有量が0~95重量%であることを特徴とする請求項1に記載の淡水域対応型防汚塗料組成物。
- 前記脂環式炭化水素樹脂(B)を、前記金属塩結合含有重合体(A)100重量部に対して、0.1~100重量部含有することを特徴とする請求項1または2に記載の淡水域対応型防汚塗料組成物。
- 体質顔料をさらに含有することを特徴とする請求項1~3のいずれかに記載の淡水域対応型防汚塗料組成物。
- 前記体質顔料が酸化亜鉛であることを特徴とする請求項4に記載の淡水域対応型防汚塗料組成物。
- 無機防汚剤をさらに含有することを特徴とする請求項1~5のいずれかに記載の淡水域対応型防汚塗料組成物。
- 前記無機防汚剤が亜酸化銅であることを特徴とする請求項6に記載の淡水域対応型防汚塗料組成物。
- 有機防汚剤をさらに含有することを特徴とする請求項1~7のいずれかに記載の淡水域対応型防汚塗料組成物。
- 前記有機防汚剤がピリチオン化合物、トリ有機ボロンおよびそのアミン錯体、ならびに4,5-ジクロロ-2-n-オクチル-4-イソチアゾリン-3-オンからなる群から選ばれた少なくとも1種の化合物であることを特徴とする請求項8に記載の淡水域対応型防汚塗料組成物。
- 他の固体状樹脂をさらに含有することを特徴とする請求項1~9のいずれかに記載の淡水域対応型防汚塗料組成物。
- 前記他の固体状樹脂がロジンおよび/またはテルペンフェノール樹脂であることを特徴とする請求項10に記載の淡水域対応型防汚塗料組成物。
- 請求項1~11のいずれかに記載された淡水域対応型防汚塗料組成物から形成されてなることを特徴とする淡水域対応型防汚塗膜。
- 基材の表面が、請求項12に記載の淡水域対応型防汚塗膜で被覆されていることを特徴とする淡水域対応型防汚塗膜付き基材。
- 前記基材が、水中構造物または船舶外板であることを特徴とする請求項13に記載の淡水域対応型防汚塗膜付き基材。
- 基材の表面に、請求項1~11のいずれかに記載の淡水域対応型防汚塗料組成物を塗布または含浸させ、次いで硬化させることにより塗膜を形成することを特徴とする基材表面への淡水域対応型防汚塗膜の形成方法。
- 基材の表面に、請求項1~11のいずれかに記載の淡水域対応型防汚塗料組成物を塗布または含浸させ、次いで硬化させることにより防汚塗膜を形成することを特徴とする基材の防汚方法。
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