WO2016133094A1 - 低温硬化断面修復材、およびそれを用いた断面修復方法 - Google Patents
低温硬化断面修復材、およびそれを用いた断面修復方法 Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/06—Acrylates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/005—Repairing damaged coatings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/06—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/48—Macromolecular compounds
- C04B41/4826—Polyesters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
- C08F290/06—Polymers provided for in subclass C08G
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/10—Metal compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/17—Amines; Quaternary ammonium compounds
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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
- C09D131/00—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 an acyloxy radical of a saturated carboxylic acid, of carbonic acid, or of a haloformic acid; Coating compositions based on derivatives of such polymers
- C09D131/02—Homopolymers or copolymers of esters of monocarboxylic acids
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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
- C09D135/00—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 a carboxyl radical, and containing at least another carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D135/02—Homopolymers or copolymers of esters
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
- C09D175/16—Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/10—Compositions or ingredients thereof characterised by the absence or the very low content of a specific material
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/17—Amines; Quaternary ammonium compounds
- C08K5/18—Amines; Quaternary ammonium compounds with aromatically bound amino groups
Definitions
- the present invention relates to a low-temperature curing cross-section repair material and a cross-section repair method using the same.
- the present invention has been made in view of the above circumstances, and can be cured in a short time even in an extremely low temperature environment of ⁇ 25 ° C., and has a low temperature curing cross section excellent in workability and strength development.
- An object of the present invention is to provide a restoration material and a cross-section restoration method using the same.
- a low-temperature curable cross-sectional repair material comprising a radically polymerizable unsaturated monomer (A-2) having an acryloyl group can solve the above-mentioned problems.
- the radical polymerizable resin composition (A), a hydroxyl group-containing aromatic tertiary amine (C-1) represented by the following general formula (I), an organic peroxide (D), an inorganic filler ( E), and the radical polymerizable resin composition (A) is selected from the group consisting of a vinyl ester resin, a urethane (meth) acrylate resin, and a polyester (meth) acrylate resin.
- a low-temperature curable cross-sectional repair material comprising a resin (A-1) and a radically polymerizable unsaturated monomer (A-2) having at least two (meth) acryloyl groups in the molecule
- radical polymerizable resin composition (A) 100 parts by mass of the radical polymerizable resin composition (A), 0.1 to 10 parts by mass of a hydroxyl group-containing aromatic tertiary amine (C-1) represented by the following general formula (I), Containing 0.1 to 10 parts by weight of an organic peroxide (D) and 1.0 to 500 parts by weight of an inorganic filler (E), the radical polymerizable resin composition (A) being At least one radical polymerizable resin (A-1) selected from the group consisting of vinyl ester resins, urethane (meth) acrylate resins and polyester (meth) acrylate resins, and at least two (meth) And a radical polymerizable unsaturated monomer (A-2) having an acryloyl group, and a radical having at least two (meth) acryloyl groups in the molecule in the radical polymerizable resin composition (A).
- R 1 is H, CH 3 or OCH 3
- R 2 is a hydroxyalkyl group
- R 3 is an alkyl group or a hydroxyalkyl group
- R 4 is H, CH 3 or OCH 3 , and R 5 and R 6 are each independently an alkyl group
- Blending of (C-1) hydroxyl group-containing aromatic tertiary amine represented by general formula (I) and (C-2) aromatic tertiary amine represented by general formula (II) The low-temperature-curing cross-sectional repair material according to any one of [2] to [5], wherein the mass ratio of the amount is 20: 1 to 1: 1.
- the organic peroxide (D) comprises dibenzoyl peroxide, benzoyl m-methylbenzoyl peroxide, m-toluoyl peroxide, methyl ethyl ketone peroxide, cumene hydroperoxide, and t-butyl peroxybenzoate.
- the low-temperature curing cross-sectional repair material according to any one of [1] to [6], which is at least one organic peroxide selected from the group.
- the organic peroxide (D) is selected from the group consisting of benzoyl m-methylbenzoyl peroxide, m-toluoyl peroxide, methyl ethyl ketone peroxide, cumene hydroperoxide, and t-butyl peroxybenzoate.
- the low-temperature-curing cross-sectional repair material according to any one of [1] to [7], which is at least one organic peroxide.
- the inorganic filler (E) is at least one powdery inorganic filler selected from the group consisting of talc, calcium carbonate, silica sand and fine particle silica.
- a cured product produced in an atmosphere at ⁇ 25 ° C. has a compressive strength of 20 MPa or more after 24 hours in a test according to JIS K6911 “General Test Method for Thermosetting Plastics” [1] to [9]
- the low-temperature-curing cross-section repair material according to any of the above.
- a cross-sectional repair method comprising a step of applying a cured cross-sectional repair material to form a coating film and curing the coating film.
- the present invention it is possible to provide a low-temperature cured cross-sectional repair material that can be cured in a short time even in a low temperature environment of ⁇ 25 ° C. and has excellent workability and strength development, and a cross-sectional repair method using the same. it can.
- the low-temperature curing cross-sectional repair material of the first embodiment of the present invention contains, as essential components, a radical polymerizable resin composition (A), a cobalt metal salt (B), and a hydroxyl group represented by the following general formula (I)
- a radical polymerizable resin composition (A) a cobalt metal salt (B)
- B cobalt metal salt
- II a hydroxyl group represented by the following general formula
- an organic peroxide (D) an inorganic filler (E), , Containing.
- the radical polymerizable resin composition (A) used in the first embodiment of the present invention is at least one radical selected from the group consisting of vinyl ester resins, urethane (meth) acrylate resins, and polyester (meth) acrylate resins. And a polymerizable resin (A-1) and a radically polymerizable unsaturated monomer (A-2) having at least two (meth) acryloyl groups in the molecule.
- “(meth) acrylate” means “one or both of methacrylate and acrylate”.
- (meth) acryloyl group” means “one or both of acryloyl group and methacryloyl group”.
- vinyl ester resin, urethane (meth) acrylate resin, and polyester (meth) acrylate resin will be described.
- the vinyl ester resin in the first embodiment of the present invention is sometimes called an epoxy (meth) acrylate resin, and is obtained by an esterification reaction of an epoxy compound, an unsaturated monobasic acid (and a saturated dibasic acid as required). Any conventionally known one can be used without limitation.
- Such known vinyl ester resins are described in, for example, “Polyester Resin Handbook”, published by Nikkan Kogyo Shimbun, 1988, and “Paint Glossary of Terms”, edited by Color Material Association, published in 1993.
- examples of the epoxy compound include bisphenol A-type glycidyl ether and novolac-type glycidyl ether. More specifically, as a raw material for vinyl ester resin, a reaction product of bisphenol A and epichlorohydrin, a reaction product of hydrogenated bisphenol A and epichlorohydrin, a reaction product of cyclohexanedimethanol and epichlorohydrin, norbornane dialcohol and epichlorohydrin Reaction product, reaction product of tetrabromobisphenol A and epichlorohydrin, reaction product of tricyclodecane dimethanol and epichlorohydrin, alicyclic diepoxy carbonate, alicyclic diepoxy acetal, alicyclic diepoxy carboxylate, novolak type Examples thereof include glycidyl ether and cresol novolac glycidyl ether.
- Examples of the unsaturated monobasic acid include acrylic acid and methacrylic acid.
- Examples of the saturated dibasic acid include adipic acid, sebacic acid, dimer acid and the like.
- the vinyl ester resins obtained from the above raw materials bisphenol vinyl ester resins are preferred from the viewpoint of the physical properties of the cured product such as flexibility and toughness.
- the urethane (meth) acrylate resin in the first embodiment of the present invention for example, after reacting a polyisocyanate with a polyhydroxy compound or a polyhydric alcohol, further contains a hydroxyl group-containing (meth) acrylic compound and if necessary. It is a radically polymerizable unsaturated group-containing oligomer that can be obtained by reacting a hydroxyl group-containing allyl ether compound.
- the urethane (meth) acrylate resin according to the first embodiment of the present invention reacts a hydroxyl group-containing (meth) acrylic compound with a polyhydroxy compound or a polyhydric alcohol, and then reacts with a polyisocyanate. Can also be obtained.
- Examples of the polyisocyanate used as a raw material for the urethane (meth) acrylate resin include 2,4-tolylene diisocyanate and its isomer, diphenylmethane diisocyanate, hexamethylene disisocyanate, hydrogenated xylylene diisocyanate, isophorone diisocyanate, Range isocyanate, dicyclohexylmethane diisocyanate, naphthalene diisocyanate, triphenylmethane triisocyanate, Vanock D-750, Crisbon NK (trade name; manufactured by Dainippon Ink and Chemicals) Tess Module L (trade name; manufactured by Sumitomo Bayer), Coronate L (Trade name; manufactured by Nippon Polyurethane Co., Ltd.), Takenate D102 (trade name; manufactured by Takeda Pharmaceutical Co., Ltd.), Isonate 143L (trade name; manufactured by Mitsubishi Chemical Corporation), Duranai Series (trade
- polyhydroxy compound used as a raw material for the urethane (meth) acrylate resin examples include polyester polyol and polyether polyol. More specifically, glycerin-ethylene oxide adduct, glycerin-propylene oxide adduct, glycerin-tetrahydrofuran adduct, glycerin-ethylene oxide-propylene oxide adduct, trimethylolpropane-ethylene oxide adduct, trimethylolpropane-propylene oxide adduct , Trimethylolpropane-tetrahydrofuran adduct, trimethylolpropane-ethylene oxide-propylene oxide adduct, dipentaerythritol-ethylene oxide adduct, dipentaerythritol-propylene oxide adduct, dipentaerythritol-tetrahydrofuran adduct And dipentaerythritol-ethylene oxide-propylene oxide a
- Examples of the polyhydric alcohol used as a raw material for the urethane (meth) acrylate resin include ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, 2-methyl-1,3.
- the hydroxyl group-containing (meth) acrylic compound used as a raw material for the urethane (meth) acrylate resin is preferably a hydroxyl group-containing (meth) acrylic ester, specifically, for example, 2-hydroxyethyl (meth) acrylate, 2 -Hydroxypropyl (meth) acrylate, 3-hydroxybutyl (meth) acrylate, polyethylene glycol mono (meth) acrylate, polypropylene glycol mono (meth) acrylate, tris (hydroxyethyl) isocyanursannodi (meth) acrylate, pentaerythritol tri (Meth) acrylate, glycerin (mono) (meth) acrylate, Blemmer series (trade name; manufactured by NOF Corporation) and the like can be mentioned.
- These hydroxyl group-containing (meth) acrylic compounds may be used alone or in combination of two or more.
- hydroxyl group-containing allyl ether compound used as a raw material for the urethane (meth) acrylate resin include ethylene glycol monoallyl ether, diethylene glycol monoallyl ether, triethylene glycol monoallyl ether, and polyethylene.
- Glycol monoallyl ether propylene glycol monoallyl ether, dipropylene glycol monoallyl ether, tripropylene glycol monoallyl ether, polypropylene glycol monoallyl ether, 1,2-butylene glycol monoallyl ether, 1,3-butylene glycol monoallyl ether , Hexylene glycol monoallyl ether, octylene glycol monoallyl ether, trimethylolpropane diallyl Ether, Grilled syringe allyl ether, pentaerythritol triallyl ether.
- These hydroxyl group-containing allyl ether compounds may be used alone or in combination of two or more.
- the polyester (meth) acrylate resin according to the first embodiment of the present invention is (1) a polyester having a terminal carboxyl group obtained from at least one of a saturated polybasic acid and an unsaturated polybasic acid, and a polyhydric alcohol.
- (meth) acrylate obtained by reacting an epoxy compound containing an ⁇ , ⁇ -unsaturated carboxylic acid ester group, (2) at least one of a saturated polybasic acid and an unsaturated polybasic acid, a polyhydric alcohol, (Meth) acrylate obtained by reacting a hydroxyl group-containing (meth) acrylate with a terminal carboxyl group polyester obtained from (3), at least one of a saturated polybasic acid and an unsaturated polybasic acid, and a polyhydric alcohol (Meth) obtained by reacting (meth) acrylic acid with polyester having a terminal hydroxyl group obtained from Acrylate.
- saturated polybasic acid used as a raw material for a polyester (meth) acrylate resin for example, it does not have a polymerizable unsaturated bond such as phthalic acid, isophthalic acid, terephthalic acid, tetrahydrophthalic acid, adipic acid, and sebacic acid.
- examples thereof include polybasic acids or anhydrides thereof.
- the unsaturated polybasic acid include fumaric acid, maleic acid, itaconic acid or its anhydride.
- polyhydric alcohol component examples include ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, 1,2-butanediol, 1,3-butanediol, 1,5-pentanediol, 1,6-hexanediol, 2-methyl-1,3-propanediol, 2,2-dimethyl-1,3-propanediol, cyclohexane-1,4-dimethanol, ethylene oxide adduct of bisphenol A, propylene oxide adduct of bisphenol A, etc. Can be mentioned.
- a typical example of the ⁇ , ⁇ -unsaturated carboxylic acid ester having an epoxy group used for the production of a polyester (meth) acrylate resin is glycidyl methacrylate.
- the polyester (meth) acrylate resins obtained from the above raw materials bisphenol A type polyester (meth) acrylate resins are preferable from the viewpoint of mechanical strength.
- the radically polymerizable unsaturated monomer (A-2) having at least two (meth) acryloyl groups in the molecule lowers the viscosity of the resin and increases the hardness, strength and chemical resistance. It is important for improving the properties and water resistance.
- radical polymerizable unsaturated monomer (A-2) having two or more (meth) acryloyl groups in at least the molecule used in the first embodiment of the present invention Other radical polymerizable unsaturated monomers can be used as long as the performance of the low-temperature-curing cross-sectional repair material is not lowered.
- the radical polymerizable unsaturated monomer other than the radical polymerizable unsaturated monomer (A-2) having at least two (meth) acryloyl groups in the molecule is not particularly limited.
- the radical polymerizable unsaturated monomer (A-2) having at least two (meth) acryloyl groups in the molecule used in the first embodiment of the present invention is contained in the radical polymerizable resin composition (A). 35% by mass to 95% by mass, preferably 50% by mass to 95% by mass, and more preferably 70% by mass to 95% by mass.
- the content of the radical polymerizable unsaturated monomer (A-2) having at least two (meth) acryloyl groups in the molecule in the radical polymerizable resin composition (A) is less than 35% by mass, the viscosity is Since it becomes high and workability
- radical polymerizable unsaturated monomer (A-2) having at least two (meth) acryloyl groups in the molecule in the radical polymerizable resin composition (A) exceeds 95% by mass. This is not preferable because desired physical properties may not be obtained.
- “workability” refers to the ease of application when applying a low-temperature curing cross-section repair material to a cross section of concrete or the like.
- the viscosity of the radical polymerizable resin composition (A) used in the first embodiment of the present invention is preferably 150 mPa ⁇ s or less at 25 ° C., and more preferably 100 mPa ⁇ s or less at 25 ° C.
- the viscosity of the radical polymerizable resin composition (A) is 150 mPa ⁇ s at 25 ° C., kneadability and workability when an inorganic filler is added at low temperatures are not deteriorated.
- the cobalt metal salt (B) used in the first embodiment of the present invention acts as a curing accelerator and a drying property imparting agent.
- the cobalt metal salt (B) include cobalt naphthenate, cobalt octylate, and cobalt hydroxide, and cobalt naphthenate and cobalt octylate are preferable.
- the cobalt metal salt (B) is blended in an amount of 0.1 to 10 parts by mass with respect to 100 parts by mass of the radical polymerizable resin composition (A), and 0.1 to 5.0 parts by mass. It is preferable to mix
- R 1 is H, CH 3 or OCH 3
- R 2 is a hydroxyalkyl group
- R 3 is an alkyl group or a hydroxyalkyl group
- the carbon number of the alkyl group and hydroxyalkyl group Is preferably 1-10)
- hydroxyl group-containing aromatic tertiary amine (C-1) used in the first embodiment of the present invention include, for example, N-methyl-N- ⁇ -hydroxyethylaniline, N-butyl-N- ⁇ - Hydroxyethylaniline, N-methyl-N- ⁇ -hydroxyethyl-p-toluidine, N-butyl-N- ⁇ -hydroxyethyl-p-toluidine, N-methyl-N- ⁇ -hydroxypropylaniline, N-methyl- N- ⁇ -hydroxypropyl-p-toluidine, N, N-di ( ⁇ -hydroxyethyl) aniline, N, N-di ( ⁇ -hydroxypropyl) aniline, N, N-di ( ⁇ -hydroxyethyl) -p -Toluidine, N, N-di ( ⁇ -hydroxypropyl) -p-toluidine, N, N-diisopropylol-p-toluidine, N
- hydroxyl group-containing aromatic tertiary amines may be used alone or in combination of two or more.
- N, N-di ( ⁇ -hydroxyethyl) -p-toluidine and N, N-di ( ⁇ -hydroxypropyl) -p-toluidine are preferable from the viewpoint of low-temperature curability. .
- the hydroxyl group-containing aromatic tertiary amine (C-1) used in the first embodiment of the present invention is 0.1 to 10 parts by mass with respect to 100 parts by mass of the radical polymerizable resin composition (A). It is preferably blended in a proportion of 0.3 to 10 parts by mass. If the blending ratio of the hydroxyl group-containing aromatic tertiary amine (C-1) is out of the above range, it is not preferable because curing may be poor or workability may be deteriorated.
- the aromatic tertiary amine (C-2) used in the first embodiment of the present invention is represented by the following general formula (II).
- R 4 is H, CH 3 or OCH 3
- R 5 and R 6 are each independently an alkyl group, and the alkyl group preferably has 1 to 10 carbon atoms
- aromatic tertiary amine (C-2) used in the first embodiment of the present invention include N, N-dimethylaniline and N, N-dimethyl-p-toluidine. These aromatic tertiary amines may be used alone or in combination of two or more. As the aromatic tertiary amine, N, N-dimethyl-p-toluidine is preferable from the viewpoint of low-temperature curability.
- the aromatic tertiary amine (C-2) used in the first embodiment of the present invention is 0.05 parts by mass to 1.0 part by mass with respect to 100 parts by mass of the radical polymerizable resin composition (A). It is preferably blended in a proportion of 0.1 to 1.0 part by mass. When the mixing ratio of the aromatic tertiary amine (C-2) is within the above range, curability and workability are improved.
- the hydroxyl group-containing aromatic tertiary amine (C-1) and the aromatic tertiary amine (C-2) are preferably blended in a mass ratio of 20: 1 to 1: 1, and 20: 1 to 2 It is more preferable to mix
- the mass ratio of the hydroxyl group-containing aromatic tertiary amine (C-1) and aromatic tertiary amine (C-2) is within the above range, the curing time can be shortened, resulting in poor curing, poor drying properties, and storage. Stability failure can be prevented.
- the organic peroxide (D) used in the first embodiment of the present invention acts as a room temperature radical polymerization initiator when combined with a cobalt metal salt or amines.
- the organic peroxide (D) used in the first embodiment of the present invention is not particularly limited, but a known organic peroxide is used. Examples of the organic peroxide include those classified into ketone peroxide, peroxyketal, hydroperoxide, diallyl peroxide, diacyl peroxide, peroxyester, and peroxydicarbonate.
- an azo compound is also mentioned as an organic peroxide.
- organic peroxide examples include benzoyl peroxide, dicumyl peroxide, diisopropyl peroxide, di-t-butyl peroxide, t-butyl peroxybenzoate, and 1,1-bis (t-butylperoxy).
- At least one organic peroxide selected from the group consisting of benzoyl m-methylbenzoyl peroxide, m-toluoyl peroxide, methyl ethyl ketone peroxide, cumene hydroperoxide and t-butyl peroxybenzoate is present. preferable.
- the organic peroxide (D) used in the first embodiment of the present invention is blended at a ratio of 0.1 to 10 parts by mass with respect to 100 parts by mass of the radical polymerizable resin composition (A). It is preferably blended at a ratio of 2 to 8 parts by mass. If the blending ratio of the organic peroxide (D) is less than the above range, curing may not proceed sufficiently, which is not preferable. On the other hand, when the blending ratio of the organic peroxide (D) exceeds the above range, it is not preferable because it is economically disadvantageous and physical properties of the cured product may be deteriorated.
- the inorganic filler (E) used in the first embodiment of the present invention acts as an aggregate.
- the inorganic filler (E) used in the first embodiment of the present invention is not particularly limited, and examples thereof include cinnabar sand, silica, talc, alumina, aluminum hydroxide, calcium carbonate, aluminum, and titanium. Among these, silica sand, silica, and calcium carbonate are preferable from the viewpoint of cost and material availability.
- the particle size of the inorganic filler (E) is preferably 1 nm to 5000 ⁇ m, and more preferably 10 nm to 2000 ⁇ m. When the particle size of the inorganic filler (E) is within the above range, the workability and physical properties of the low-temperature curing cross-section repair material can be improved.
- the inorganic filler (E) used in the first embodiment of the present invention is blended at a ratio of 1.0 to 500 parts by mass with respect to 100 parts by mass of the radical polymerizable resin composition (A). It is preferably blended at a ratio of 0.0 part by mass to 450 parts by mass. If the blending ratio of the inorganic filler (E) is out of the above range, it may be unsatisfactory in curing or workability may be deteriorated.
- the low-temperature curing cross-sectional repair material of the first embodiment of the present invention includes a photopolymerization initiator and a polymerization having photosensitivity in the visible light to near-infrared light region within a range not impairing the effects of the first embodiment of the present invention.
- Inhibitors, waxes, thixotropic agents, reinforcing materials, coupling agents, curing accelerators and the like may be added.
- Examples of the photopolymerization initiator having photosensitivity in the visible light or near infrared light region include Irgacure 1800 (manufactured by Ciba Specialty Chemicals).
- the photopolymerization initiator is preferably blended in an amount of 0.01 to 15 parts by mass with respect to 100 parts by mass of the radical polymerizable resin composition (A), and 0.05 to 10 parts by mass. It is more preferable to mix
- the blending ratio of the photopolymerization initiator is within the above range, it is possible to prevent the surface drying property and the physical properties of the cured product from being deteriorated.
- polymerization inhibitor examples include hydroquinone, methyl hydroquinone, trimethyl hydroquinone, tertiary butyl catechol, 2,6-di-tertiary butyl 4-methylphenone, and the like.
- Waxes are blended for the purpose of improving drying properties.
- Known waxes can be used without limitation, for example, petroleum wax (paraffin wax, microcrystalline, etc.), plant wax (candelilla wax, rice wax, wood wax, etc.), animal wax (beeswax, Whale wax, etc.), mineral wax (montan wax, etc.), synthetic wax (polyethylene wax, amide wax, etc.), etc. are used. More specifically, examples of the wax include paraffin wax having a melting point of about 20 ° C. to 80 ° C., BYK-S-750, BYK-S-740, BYK-LP-S6665 (manufactured by BYK Chemie). In addition, waxes having different melting points may be used in combination.
- a drying property imparting agent as described in JP-A-2002-97233 may be used in combination.
- the wax is preferably blended at a ratio of 0.1 to 5.0 parts by mass with respect to 100 parts by mass of the radical polymerizable resin composition (A).
- the blending ratio of the wax is within the above range, it is possible to prevent the surface drying property and the physical properties of the cured product from being deteriorated.
- a solvent can be used in order to improve the solubility and dispersibility of the paraffin wax.
- known solvents can be used, for example, alkyl ether acetates such as ethyl acetate, ethers such as tetrahydrofuran, ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, benzene, toluene, xylene, Hydrocarbons such as octane, decane and dodecane, petroleum solvents such as petroleum ether, petroleum naphtha, hydrogenated petroleum naphtha and solvent naphtha, lactic esters such as methyl lactate, ethyl lactate and butyl lactate, dimethylformamide and N-methyl Examples include pyrrolidone.
- the thixotropic agent is blended for the purpose of imparting thixotropic properties.
- the thixotropic agent include silica powder (aerosil type), mica powder, calcium carbonate powder, short fiber asbestos and the like for inorganic systems, and known ones such as hydrogenated castor oil for organic systems.
- silica powder as the thixotropic agent, a silica-type thixotropic agent is preferable.
- the Aerosil type may be used in combination with a thixotropic agent such as BYK R605 (manufactured by Big Chemie).
- Examples of the reinforcing material include short fibers such as carbon, ceramics, and stainless steel.
- silane coupling agents such as aminosilane, vinyl silane, epoxy silane, and acrylic silane are preferable.
- Curing accelerators are not particularly limited, but include ⁇ -diketones such as acetylacetone, ethyl acetoacetate, ⁇ -acetyl- ⁇ -butyrolactone, N-pyrodininoacetoacetamide, N, N dimethylacetoacetamide, and the like. Can be mentioned.
- the low-temperature-curing cross-sectional repair material of the first embodiment of the present invention having such a configuration is obtained by using a cured product produced in an atmosphere of ⁇ 25 ° C. in a test according to JIS K6911 “General Thermosetting Plastic Testing Method”.
- the compressive strength after time is preferably 20 MPa or more, and more preferably 60 MPa or more. If the compressive strength after 24 hours of the cured product is within the above range, the performance as a cross-sectional repair material can be maintained even after being subjected to freezing and thawing.
- the low-temperature-curing cross-section repair material of this embodiment can be cured in a short time even at a low temperature environment of ⁇ 25 ° C., has excellent workability for forming a coating film, and has excellent strength development of the coating film. .
- the method for repairing a cross-section of the first embodiment of the present invention includes the low-temperature curing described above in an atmosphere of ⁇ 25 ° C. or higher on at least one cross-section selected from the group consisting of concrete, asphalt concrete, mortar, wood and metal. It has the process of apply
- concrete and asphalt concrete are preferable as the object to which the above-described low-temperature curing cross-section repair material is applied.
- the method for applying the low-temperature curing cross-section repair material to the above-mentioned cross section is not particularly limited.
- the application method by dipping, the application method by spray, the application method by roller, the application method using a tool such as a brush, a brush or a spatula Etc. are used.
- the amount of the low-temperature-curing cross-sectional repair material applied to the cross-section is not particularly limited.
- the adhesion of the low-temperature-curing cross-sectional repair material to the low-temperature-curing cross-sectional repair material and the strength of the coating made of the low-temperature curing cross-sectional repair material In consideration of the above, the coating amount of the low-temperature curing cross-section repair material is adjusted as appropriate.
- drying method of the coating film which consists of a low-temperature hardening cross-section repair material is not specifically limited, The method of drying naturally or the method of heating in the range in which the characteristic of the film finally obtained does not deteriorate is used.
- the cross-sectional repair method according to the first embodiment of the present invention can form a coating film having excellent strength development within 24 hours even in a low temperature environment of ⁇ 25 ° C.
- the low-temperature curing cross-sectional repair material of the second embodiment of the present invention includes, as essential components, a radical polymerizable resin composition (A) and a hydroxyl group-containing aromatic tertiary amine (C-1) represented by the general formula (I) ), An organic peroxide (D), and an inorganic filler (E). Furthermore, an aromatic tertiary amine (C-2) represented by the general formula (II) and a cobalt metal salt (B) can be contained.
- the aromatic tertiary amine (C-2) and the cobalt metal salt (B) represented by the general formula (II) of the first embodiment are included as essential components. It does not have to be.
- the radical polymerizable resin composition (A) used in the second embodiment of the present invention is a vinyl ester resin, urethane (meth), as with the radical polymerizable resin composition (A) of the first embodiment of the present invention. And at least one radical polymerizable resin (A-1) selected from the group consisting of acrylate resins and polyester (meth) acrylate resins, and at least two radically polymerizable (meth) acryloyl groups in the molecule. And a saturated monomer (A-2). Further, as an optional component, a wax such as paraffin wax 115 ° F. may be included as long as the effects of the present invention are not impaired.
- vinyl ester resin, urethane (meth) acrylate resin, and polyester (meth) acrylate resin will be described.
- the vinyl ester resin in the second embodiment of the present invention is the same as the vinyl ester resin used in the first embodiment of the present invention.
- the urethane (meth) acrylate resin in the second embodiment of the present invention is the same as the urethane (meth) acrylate resin used in the first embodiment of the present invention.
- polyester (meth) acrylate resin in the second embodiment of the present invention is the same as the polyester (meth) acrylate resin used in the first embodiment of the present invention.
- the radically polymerizable unsaturated monomer (A-2) having at least two (meth) acryloyl groups in the molecule in the second embodiment of the present invention is present in at least the molecule in the first embodiment of the present invention.
- hydroxyl group-containing aromatic tertiary amine (C-1) used in the second embodiment of the present invention is the same as the hydroxyl group-containing aromatic tertiary amine (C-1) used in the first embodiment of the present invention. .
- Organic peroxide (D) used in the second embodiment of the present invention is the same as the organic peroxide (D) used in the first embodiment of the present invention.
- the inorganic filler (E) used in the second embodiment of the present invention is the same as the inorganic filler (E) used in the first embodiment of the present invention.
- the cobalt metal salt (B) acting as a curing accelerator and a drying property imparting agent is , Not an essential component, but an optional component that can be blended as needed.
- cobalt metal salt (B) examples include cobalt naphthenate, cobalt octylate, and cobalt hydroxide, and cobalt naphthenate and cobalt octylate are preferable.
- the cobalt metal salt (B) is blended, it is preferably blended at a ratio of 0.1 to 10 parts by mass with respect to 100 parts by mass of the radical polymerizable resin composition (A). More preferably, it is blended at a ratio of mass parts to 5.0 mass parts.
- the blending ratio of the cobalt metal salt (B) is in the above range, the curing time is shortened, and the curability and drying properties are good.
- an aromatic tertiary amine represented by the following general formula (II) ( C-2) is not an essential component, but is an optional component that can be used in combination with a hydroxyl group-containing aromatic tertiary amine (C-1) as necessary.
- R 4 is H, CH 3 or OCH 3
- R 5 and R 6 are each independently an alkyl group, and the alkyl group preferably has 1 to 10 carbon atoms
- the aromatic tertiary amine (C-2) used in the second embodiment of the present invention is the same as the aromatic tertiary amine (C-2) described in the first embodiment of the present invention.
- the aromatic tertiary amine (C-2) When the aromatic tertiary amine (C-2) is blended in the second embodiment of the present invention, 0.05 parts by mass to 1.0 part by mass with respect to 100 parts by mass of the radical polymerizable resin composition (A). It is preferably blended in a proportion of 0.1 part by weight, more preferably in a proportion of 0.1 to 1.0 part by weight. When the mixing ratio of the aromatic tertiary amine (C-2) is in the above range, curability and workability are good.
- the hydroxyl group-containing aromatic tertiary amine (C-1) and the aromatic tertiary amine (C-2) are preferably blended in a mass ratio of 20: 1 to 1: 1, and 20: 1 to 2 It is more preferable to mix
- the mass ratio of the hydroxyl group-containing aromatic tertiary amine (C-1) and aromatic tertiary amine (C-2) is within the above range, the curing time can be shortened, resulting in poor curing, poor drying properties, and storage. Stability failure and the like can be prevented.
- the visible light or near infrared light region described in the first embodiment of the present invention is within the range not impairing the effect of the second embodiment of the present invention.
- Photosensitive photopolymerization initiators, polymerization inhibitors, waxes, thixotropic agents, reinforcing materials, coupling agents, curing accelerators, and the like may be added.
- the low-temperature curing cross-sectional repair material of the second embodiment of the present invention having the above-described configuration is a cured product obtained by curing reaction of the cross-sectional repair material in an atmosphere of ⁇ 25 ° C.
- the compressive strength after 24 hours is preferably 20 MPa or more, and more preferably 60 MPa or more. If the compressive strength after 24 hours of the cured product is within the above range, the performance as a cross-sectional repair material can be maintained even after being subjected to freezing and thawing.
- the low-temperature-curing cross-section repair material of this embodiment can be cured in a short time even in a low-temperature environment of ⁇ 25 ° C. or less, and the formed coating film has good drying properties, excellent workability for forming a coating film, Excellent in strength expression of the coating film.
- Cross-sectional repair method of the second embodiment of the present invention is the same as that of the first embodiment of the present invention.
- the cross-sectional repair method according to the second embodiment of the present invention can form a coating film having excellent strength development within 24 hours even in a low temperature environment of ⁇ 25 ° C.
- paraffin wax 115 ° F .: 15.0 g and diethylene glycol dimethacrylate: 822 g were added to this vinyl ester resin, and the viscosity at 25 ° C. was 98 mPa.s. s, a bisphenol A-based vinyl ester resin composition (VE-1) having a solid content of 45% by mass and diethylene glycol dimethacrylate of 55% by mass was obtained.
- Synthesis Example 4 The same operation as in Synthesis Example 1 was performed except that diethylene glycol dimethacrylate in Synthesis Example 1 was changed to styrene monomer and the addition amount was 288 g, and the viscosity at 25 ° C. was 53 mPa ⁇ s and the solid content was 70% by mass. A vinyl ester resin composition (VE-4) containing 30% by mass of styrene monomer was obtained.
- paraffin wax 115 ° F: 200 g and trimethylolpropane trimethacrylate: 19,638 g are added to this polyester methacrylate resin, the viscosity at 25 ° C is 95 mPa ⁇ s, the solid content is 10% by mass, and trimethylolpropane trimethacrylate is 90%.
- a mass% polyester methacrylate resin composition (PMA-1) was obtained.
- urethane methacrylate resin composition (UMA-1) having a viscosity at 25 ° C. of 68 mPa ⁇ s, a solid content of 20% by mass, and diethylene glycol dimethacrylate of 80% by mass.
- the radically polymerizable resin compositions of Synthesis Examples 1 to 6 were allowed to stand in an atmosphere at ⁇ 25 ° C. for 24 hours, and then the curable resin compositions of Examples 1 to 8 and Comparative Example 1 were prepared with the formulations shown in Table 1. .
- the obtained curable resin composition was evaluated for curability at ⁇ 25 ° C. and measured for compressive strength according to the following methods.
- the amounts of cobalt metal salt, hydroxyl group-containing aromatic tertiary amine, aromatic tertiary amine, organic peroxide, and inorganic filler shown in Table 1 are the same as those of the radically polymerizable resin compositions of Synthesis Examples 1 to 6.
- the amount added is 100 parts by mass. The test method is shown below.
- the curable resin compositions of Examples 1 to 8 can be cured in a short time even in an extremely low temperature environment such as ⁇ 25 ° C., and have high workability, concrete adhesion, and compression. It can be said that it is excellent in strength development.
- curable resin compositions of Examples 9 to 16 having the compositions shown in Table 1 were prepared. Was evaluated.
- the radically polymerizable resin compositions of Synthesis Examples 1 to 6 were allowed to stand in an atmosphere at ⁇ 25 ° C. for 24 hours, and then curable resin compositions of Examples 9 to 16 were prepared with the formulations shown in Table 1. Evaluation of curability at ⁇ 25 ° C. and measurement of compressive strength of the obtained curable resin composition were performed according to the method of the example of the first embodiment. In addition, the drying properties of Examples 1 to 8 of the first embodiment, Comparative Example 1, and Examples 9 to 2 of the second embodiment were also evaluated according to the following method. The results are shown in Table 1.
- the curable resin compositions of Examples 9 to 16 which do not contain the cobalt metal salt (B) are also the examples of the first embodiment of the present invention. Although it is not about ⁇ 8, it can be cured in an extremely low temperature environment such as ⁇ 25 ° C. in less than 6 hours and has higher workability, concrete adhesion and compressive strength than Comparative Example 1. It can be said that. In the second embodiment of the present invention, the storage stability of the curable resin composition tends to be longer when the cobalt metal salt (B) is not included.
- a curable resin composition not containing the cobalt metal salt (B) can be prepared in advance, and the cobalt metal salt (B) can be added and used when used. Further, the curable resin compositions of Examples 1 to 16 of the first and second embodiments are superior to Comparative Example 1 in the drying property of the coating film when cured at ⁇ 25 ° C.
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Abstract
Description
本願は、2015年2月19日に、日本に出願された特願2015-030419号および2015年9月1日に、日本に出願された特願2015-172062号に基づき優先権を主張し、その内容をここに援用する。
その結果、ラジカル重合性樹脂組成物(A)と、コバルト金属塩(B)と、下記一般式(I)で表される水酸基含有芳香族3級アミン(C-1)と、下記一般式(II)で表される芳香族3級アミン(C-2)と、有機過酸化物(D)と、無機充填材(E)と、を含有し、ラジカル重合性樹脂組成物(A)が、ビニルエステル樹脂、ウレタン(メタ)アクリレート樹脂およびポリエステル(メタ)アクリレート樹脂からなる群から選択される少なくとも1種のラジカル重合性樹脂(A-1)と、少なくとも分子中に2つ以上の(メタ)アクリロイル基を有するラジカル重合性不飽和単量体(A-2)と、を含む低温硬化性断面修復材が、上記課題を解決し得ることを見出し、本発明の第1実施態様を完成するに至った。
以下、本発明の第1実施形態による低温硬化断面修復材およびそれを用いた断面修復方法を詳細に説明する。
本発明の第1実施形態の低温硬化断面修復材は、必須成分として、ラジカル重合性樹脂組成物(A)と、コバルト金属塩(B)と、下記一般式(I)で表される水酸基含有芳香族3級アミン(C-1)と、下記一般式(II)で表される芳香族3級アミン(C-2)と、有機過酸化物(D)と、無機充填材(E)と、を含有することを特徴とする。
本明細書において「(メタ)アクリレート」とは、「メタアクリレートおよびアクリレートの一方または両方」を意味する。また、本明細書において「(メタ)アクリロイル基」とは、「アクリロイル基およびメタクリロイル基の一方または両方」を意味する。
以下、ビニルエステル樹脂、ウレタン(メタ)アクリレート樹脂、ポリエステル(メタ)アクリレート樹脂を説明する。
本発明の第1実施形態におけるビニルエステル樹脂は、エポキシ(メタ)アクリレート樹脂と呼ばれることもあり、エポキシ化合物と不飽和一塩基酸と(必要に応じて飽和二塩基酸)のエステル化反応により得られる従来公知のものを制限なく用いることができる。このような公知のビニルエステル樹脂は、例えば、「ポリエステル樹脂ハンドブック」、日刊工業新聞社、1988年発行、および、「塗料用語辞典」、色材協会編、1993年発行などに記載されている。
不飽和一塩基酸としては、例えば、アクリル酸、メタクリル酸などが挙げられる。
飽和二塩基酸としては、例えば、アジピン酸、セバシン酸、ダイマー酸などが挙げられる。
上記原料から得られるビニルエステル樹脂の中でも、柔軟性や靭性といった硬化物の物性の観点から、ビスフェノール系ビニルエステル樹脂が好ましい。
本発明の第1実施形態におけるウレタン(メタ)アクリレート樹脂は、例えば、ポリイソシアネートと、ポリヒドロキシ化合物または多価アルコール類とを反応させた後、さらに、水酸基含有(メタ)アクリル化合物および必要に応じて水酸基含有アリルエーテル化合物を反応させることによって得ることができるラジカル重合性不飽和基含有オリゴマーである。また、本発明の第1実施形態におけるウレタン(メタ)アクリレート樹脂は、水酸基含有(メタ)アクリル化合物と、ポリヒドロキシ化合物または多価アルコール類とを反応させた後、さらに、ポリイソシアネートを反応させることによっても得られる。
本発明の第1実施形態におけるポリエステル(メタ)アクリレート樹脂は、(1)飽和多塩基酸および不飽和多塩基酸の少なくともいずれか一方と、多価アルコールとから得られる末端カルボキシル基のポリエステルに、α,β-不飽和カルボン酸エステル基を含有するエポキシ化合物を反応させて得られる(メタ)アクリレート、(2)飽和多塩基酸および不飽和多塩基酸の少なくともいずれか一方と、多価アルコールとから得られる末端カルボキシル基のポリエステルに、水酸基含有(メタ)アクリレートを反応させて得られる(メタ)アクリレート、(3)飽和多塩基酸および不飽和多塩基酸の少なくともいずれか一方と、多価アルコールとから得られる末端水酸基のポリエステルに、(メタ)アクリル酸を反応させて得られる(メタ)アクリレートである。
多価アルコール成分としては、例えば、エチレングリコール、プロピレングリコール、ジエチレングリコール、ジプロピレングリコール、1,2-ブタンジオール、1,3-ブタンジオール、1,5-ペンタンジオール、1,6-ヘキサンジオ-ル、2-メチル-1,3-プロパンジオール、2,2-ジメチル-1,3-プロパンジオール、シクロヘキサン-1,4-ジメタノール、ビスフェノールAのエチレンオキサイド付加物、ビスフェノールAのプロピレンオキサイド付加物などが挙げられる。
ポリエステル(メタ)アクリレ-ト樹脂の製造に用いられるエポキシ基を有するα,β-不飽和カルボン酸エステルとしては、グリシジルメタクリレートが代表例として挙げられる。
上記原料から得られるポリエステル(メタ)アクリレート樹脂の中でも、機械的強度の観点から、ビスフェノールA型ポリエステル(メタ)アクリレート樹脂が好ましい。
本発明の第1実施形態における少なくとも分子中に2つ以上の(メタ)アクリロイル基を有するラジカル重合性不飽和単量体(A-2)は、樹脂の粘度を下げ、硬度、強度、耐薬品性、耐水性などを向上させるために重要である。
本発明の第1実施形態における少なくとも分子中に2つ以上の(メタ)アクリロイル基を有するラジカル重合性不飽和単量体としては、特に限定されないが、例えば、エチレングリコールジ(メタ)アクリレート、ジエチレングリコールジ(メタ)アクリレート、トリエチレングリコールジ(メタ)アクリレート、ポリエチレングリコールジ(メタ)アクリレート、プロピレングリコールジ(メタ)アクリレート、ジプロピレングリコールジ(メタ)アクリレート、トリプロピレングリコールジ(メタ)アクリレート、ポリプロピレングリコールジ(メタ)アクリレート、エトキシ化ビスフェノールAジ(メタ)アクリレート、トリシクロデカンジ(メタ)アクリレート、1,10-デカンジオールジ(メタ)アクリレート、1,4-ブタンジオールジ(メタ)アクリレート、1,6-ヘキサンジオールジ(メタ)アクリレート、1,9-ノナンジオールジ(メタ)アクリレート、ネオペンチルグリコールジ(メタ)アクリレート、グリセリンジ(メタ)アクリレート、エトキシ化ポリプロピレングリコールジ(メタ)アクリレート、トリメチロールプロパントリ(メタ)アクリレート、エトシキ化イソシアヌル酸トリ(メタ)アクリレート、ε-カプロラクトン変性トリス-(2-アクリロキシエチル)イソシアヌレート、ペンタエスリトールトリ(メタ)アクリレート、ジメチロールプロパンテトラ(メタ)アクリレート、エトキシ化ペンタエスリトールテトラ(メタ)アクリレート、ジペンタエスリトールポリ(メタ)アクリレート、ジペンタエスリトールヘキサ(メタ)アクリレート、2,2-ビス[4-(メタクリロキシエトキシ)フェニル]プロパン、2,2-ビス[4-(メタクリロキシ・ジエトキシ)フェニル]プロパン、2,2-ビス[4-(メタクリロキシ・ポリエトキシ)フェニル]プロパン、2,2-ビス[4-(アクリロキシ・ジエトキシ)フェニル]プロパン、2,2-ビス[4-(アクリロキシ・ポリエトキシ)フェニル]プロパンなどが挙げられる。これらの中でも、作業性および圧縮強度の観点から、特にエチレングリコールジ(メタ)アクリレート、ジエチレングリコールジ(メタ)アクリレート、トリメチロールプロパントリ(メタ)アクリレートが好ましい。
少なくとも分子中に2つ以上の(メタ)アクリロイル基を有するラジカル重合性不飽和単量体(A-2)以外のラジカル重合性不飽和単量体としては、特に限定されないが、例えば、スチレンモノマー、スチレンのα-,o-,m-,p-アルキル,ニトロ,シアノ,アミド,エステル誘導体、クロルスチレン、ビニルトルエン、ジビニルベンゼンなどのスチレン系モノマー;ブタジエン、2,3-ジメチルブタジエン、イソプレン、クロロプレンなどのジエン類;(メタ)アクリル酸エチル、(メタ)アクリル酸メチル、(メタ)アクリル酸-n-プロピル、(メタ)アクリル酸-i-プロピル、(メタ)アクリル酸ヘキシル、(メタ)アクリル酸2-エチルヘキシル、(メタ)アクリル酸ラウリル、(メタ)アクリル酸ドデシル、(メタ)アクリル酸シクロペンチル、(メタ)アクリル酸シクロヘキシル、(メタ)アクリル酸テトラヒドロフリル、アセトアセトキシエチル(メタ)アクリレート、ジシクロペンテニルオキシエチル(メタ)アクリレートおよびフェノキシエチル(メタ)アクリレートなどの(メタ)アクリル酸エステル類が挙げられる。また、マレイン酸やフマル酸、イタコン酸などの不飽和酸とアルコールとの縮合物なども用いることができる。
ラジカル重合性樹脂組成物(A)における少なくとも分子中に2つ以上の(メタ)アクリロイル基を有するラジカル重合性不飽和単量体(A-2)の含有量が35質量%未満では、粘度が高くなって、低温雰囲気下での作業性、骨材への濡れ性が悪くなる場合があるため好ましくない。一方、ラジカル重合性樹脂組成物(A)における少なくとも分子中に2つ以上の(メタ)アクリロイル基を有するラジカル重合性不飽和単量体(A-2)の含有量が95質量%を超えると、所望の物性が得られない場合があるため好ましくない。
なお、本明細書において、「作業性」とは、コンクリートなどの断面に対して、低温硬化断面修復材を塗工する際の塗りやすさなどのことである。
ラジカル重合性樹脂組成物(A)の粘度を25℃で150mPa・sとすると、低温時に無機充填材を添加した際の混練性や作業性が低下することがない。
本発明の第1実施形態で用いられるコバルト金属塩(B)は、硬化促進剤および乾燥性付与剤として作用する。
コバルト金属塩(B)としては、ナフテン酸コバルト、オクチル酸コバルト、水酸化コバルトなどが挙げられ、ナフテン酸コバルト、オクチル酸コバルトが好ましい。
コバルト金属塩(B)は、ラジカル重合性樹脂組成物(A)100質量部に対して、0.1質量部~10質量部の割合で配合され、0.1質量部~5.0質量部の割合で配合されることが好ましい。コバルト金属塩(B)の配合割合が、上記範囲であると、硬化時間が短期化し、硬化性や乾燥性が良好となる。
本発明の第1実施形態で用いられる水酸基含有芳香族3級アミン(C-1)は、下記一般式(I)で表される。
本発明の第1実施形態で用いられる芳香族3級アミン(C-2)は、下記一般式(II)で表される。
本発明の第1実施形態で用いられる有機過酸化物(D)は、コバルト金属塩やアミン類と組み合わせたときに常温ラジカル重合開始剤として作用するものである。
本発明の第1実施形態で用いられる有機過酸化物(D)は、特に限定はされないが、公知の有機過酸化物が用いられる。有機過酸化物としては、例えば、ケトンパーオキサイド、パーオキシケタール、ハイドロパーオキサイド、ジアリルパーオキサイド、ジアシルパーオキサイド、パーオキシエステル、パーオキシジカーボネートに分類されるものが挙げられる。また、有機過酸化物としては、アゾ化合物も挙げられる。有機過酸化物の具体例としては、ベンゾイルパーオキサイド、ジクミルパーオキサイド、ジイソプロピルパーオキサイド、ジ-t-ブチルパーオキサイド、t-ブチルパーオキシベンゾエート、1,1-ビス(t-ブチルパーオキシ)-3,3,5-トリメチルシクロヘキサン、2,5-ジメチル-2,5-ビス(t-ブチルパーオキシ)ヘキシン-3、3-イソプロピルヒドロパーオキサイド、t-ブチルヒドロパーオキサイド、ジクミルパーオキサイド、ジクミルヒドロパーオキサイド、アセチルパーオキサイド、ビス(4-t-ブチルシクロヘキシル)パーオキシジカーボネート、ジイソプロピルパーオキシジカーボネート、イソブチルパーオキサイド、3,3,5-トリメチルヘキサノイルパーオキサイド、ラウリルパーオキサイド、アゾビスイソブチロニトリル、アゾビスカルボンアミド、ベンゾイルm-メチルベンゾイルパーオキサイド、m-トルオイルパーオキサイド、メチルエチルケトンパーオキサイド、キュメンハイドロパーオキサイド、t-ブチルパーオキシベンゾエート等が挙げられる。これらの中でも、ベンゾイルm-メチルベンゾイルパーオキサイド、m-トルオイルパーオキサイド、メチルエチルケトンパーオキサイド、キュメンハイドロパーオキサイドおよびt-ブチルパーオキシベンゾエートからなる群から選択される少なくとも1種の有機過酸化物が好ましい。また、ジベンゾイルパーオキサイドとベンゾイルm-メチルベンゾイルパーオキサイドとm-トルオイルパーオキサイドの混合物、キュメンハイドロパーオキサイドとt-ブチルパーオキシベンゾエートの混合物、キュメンハイドロパーオキサイドとt-ブチルパーオキシベンゾエートとメチルエチルケトンパーオキサイドの混合物が特に好ましい。
本発明の第1実施形態で用いられる無機充填材(E)は、骨材として作用する。
本発明の第1実施形態で用いられる無機充填材(E)としては、特に限定されないが、硅砂、シリカ、タルク、アルミナ、水酸化アルミニウム、炭酸カルシウム、アルミニウム、チタンなどが挙げられる。これらの中でも、コストや材料入手の観点から、硅砂、シリカ、炭酸カルシウムが好ましい。
無機充填材(E)の粒度は、1nm~5000μmであることが好ましく、10nm~2000μmであることがより好ましい。無機充填材(E)の粒度を上記範囲内とすると、低温硬化断面修復材の作業性や物性を向上することができる。
本発明の第1実施形態の低温硬化断面修復材には、本発明の第1実施形態の効果を損なわない範囲で、可視光ないし近赤外光領域に感光性を有する光重合開始剤、重合禁止剤、ワックス類、揺変剤、補強材、カップリング剤、硬化促進剤等を添加してもよい。
光重合開始剤は、ラジカル重合性樹脂組成物(A)100質量部に対して、0.01質量部~15質量部の割合で配合されることが好ましく、0.05質量部~10質量部の割合で配合されることがより好ましい。光重合開始剤の配合割合を、上記範囲以内とすると、表面乾燥性や硬化物の物性が低下することを防止できる。
ワックス類は、ラジカル重合性樹脂組成物(A)100質量部に対して、0.1質量部~5.0質量部の割合で配合されることが好ましい。ワックス類の配合割合を、上記範囲以内とすると、表面乾燥性や硬化物の物性が低下することを防止できる。
上記の硬化物の24時間後の圧縮強度が上記範囲内であれば、施工後、凍結融解を受けても断面修復材としての性能を維持できる。
本発明の第1実施形態の断面修復方法は、コンクリート、アスファルトコンクリート、モルタル、木材および金属からなる群から選択される少なくとも1つの断面上に、-25℃以上の雰囲気下で、上述した低温硬化断面修復材を塗布して塗膜を形成し、その塗膜を硬化する工程を有する。この工程により、前記の断面に、所望の厚みの低温硬化断面修復材からなる被膜が形成される。本発明の第1実施形態の断面修復方法において、前記の対象物の中でも、上述した低温硬化断面修復材を塗布する対象物としては、コンクリート、アスファルトコンクリートが好ましい。
以下、本発明の第2実施形態による低温硬化断面修復材およびそれを用いた断面修復方法を詳細に説明する。
本発明の第2実施形態の低温硬化断面修復材は、必須成分として、ラジカル重合性樹脂組成物(A)と、一般式(I)で表される水酸基含有芳香族3級アミン(C-1)と、有機過酸化物(D)と、無機充填材(E)と、を含有することを特徴とする。さらに、一般式(II)で表わされる芳香族3級アミン(C-2)、コバルト金属塩(B)を含有することができる。すなわち、本発明の第1実施形態に比べて、必須成分として、第1実施形態の一般式(II)で表される芳香族3級アミン(C-2)およびコバルト金属塩(B)を含まなくてもよい。
また、任意成分として、本発明の効果を損なわない限り、パラフィンワックス115°Fのようなワックス等を含んでも良い。
以下、ビニルエステル樹脂、ウレタン(メタ)アクリレート樹脂、ポリエステル(メタ)アクリレート樹脂を説明する。
本発明の第2実施形態におけるビニルエステル樹脂は、本発明の第1実施形態で用いられるビニルエステル樹脂と同様である。
本発明の第2実施形態におけるウレタン(メタ)アクリレート樹脂は、本発明の第1実施形態で用いられるウレタン(メタ)アクリレート樹脂と同様である。
本発明の第2実施形態におけるポリエステル(メタ)アクリレート樹脂は、本発明の第1実施形態で用いられるポリエステル(メタ)アクリレート樹脂と同様である。
本発明の第2実施形態における少なくとも分子中に2つ以上の(メタ)アクリロイル基を有するラジカル重合性不飽和単量体(A-2)は、本発明の第1実施形態における少なくとも分子中に2つ以上の(メタ)アクリロイル基を有するラジカル重合性不飽和単量体(A-2)と同様である。
本発明の第2実施形態で用いられる水酸基含有芳香族3級アミン(C-1)は、本発明の第1実施形態で用いられる水酸基含有芳香族3級アミン(C-1)と同様である。
本発明の第2実施形態で用いられる有機過酸化物(D)は、本発明の第1実施形態で用いられる有機過酸化物(D)と同様である。
本発明の第2実施形態で用いられる無機充填材(E)は、本発明の第1実施形態で用いられる無機充填材(E)と同様である。
本発明の第2実施形態の低温硬化断面修復材においては、本発明の第1実施形態の低温硬化断面修復材と異なり、硬化促進剤および乾燥性付与剤として作用するコバルト金属塩(B)は、必須成分ではなく、必要に応じて配合することができる任意成分である。
コバルト金属塩(B)を配合する場合は、ラジカル重合性樹脂組成物(A)100質量部に対して、0.1質量部~10質量部の割合で配合されることが好ましく、0.1質量部~5.0質量部の割合で配合されることがより好ましい。コバルト金属塩(B)の配合割合が、上記範囲であると、硬化時間が短期化し、硬化性や乾燥性が良好である。
上記の硬化物の24時間後の圧縮強度が上記範囲内であれば、施工後、凍結融解を受けても断面修復材としての性能を維持できる。
本発明の第2実施形態の断面修復方法は、本発明の第1実施形態と同様である。
攪拌機、環流冷却器、ガス導入管および温度計を備えた反応装置に、エピコート828(油化シェル社製エポキシ樹脂:エポキシ当量189):460gを仕込み、120℃まで昇温させた。その温度を維持した状態で、メタクリル酸:210g、テトラメチルベンジルアンモニウムクロライド:2g、メチルハイドロキノン:0.3gを加え、空気を流しながら120℃でさらに2時間反応させて、酸価が10mgKOH/gになったところで反応を終了し、ビニルエステル樹脂を得た。次いで、このビニルエステル樹脂に、パラフィンワックス115°F:15.0g、ジエチレングリコールジメタクリレート:822gを加え、25℃での粘度が98mPa.s、固形分が45質量%、ジエチレングリコールジメタクリレートが55質量%のビスフェノールA系ビニルエステル樹脂組成物(VE-1)を得た。
合成例1におけるジエチレングリコールジメタクリレートの添加量を6050gに変更する以外は、合成例1と同様の操作を行い、25℃での粘度が15mPa・s、固形分が10質量%、ジエチレングリコールジメタクリレートが90質量%のビニルエステル樹脂組成物(VE-2)を得た。
合成例1におけるジエチレングリコールジメタクリレートの添加量を528gに変更する以外は、合成例1と同様の操作を行い、25℃での粘度が305mPa・s、固形分が54質量%、ジエチレングリコールジメタクリレートが44質量%のビニルエステル樹脂組成物(VE-3)を得た。
合成例1におけるジエチレングリコールジメタクリレートをスチレンモノマーに変更し、その添加量を288gとする以外は、合成例1と同様の操作を行い、25℃での粘度が53mPa・s、固形分が70質量%、スチレンモノマーが30質量%のビニルエステル樹脂組成物(VE-4)を得た。
攪拌機、環流冷却器、ガス導入管および温度計を備えた反応装置に、ジプロピレングリコール:604g、イソフタル酸:1080gを仕込み、窒素雰囲気中で205℃まで昇温して3時間反応させた後、100℃まで冷却した。次いで、空気下、これにメチルハイドロキノン:0.6g、グリシジルメタアクリレート:498gを加え、120℃~130℃で2時間反応させ、ポリエステルメタクリレート樹脂を得た。次いで、このポリエステルメタクリレート樹脂に、パラフィンワックス115°F:200g、トリメチロールプロパントリメタクリレート:19638gを加え、25℃での粘度が95mPa・s、固形分が10質量%、トリメチロールプロパントリメタクリレートが90質量%のポリエステルメタクリレート樹脂組成物(PMA-1)を得た。
攪拌機、環流冷却器、ガス導入管および温度計を備えた反応装置に、ジフェニルメタンジイソシアネート:223g、アデカポリエーテルポリオールP-400(ADEKA社製ポリエーテルポリオール:重量平均分子量400):188g、ジブチル錫ジラウレート:0.1gを仕込み、60℃で4時間攪拌した。次いで、2-ヒドロキシエチルメタクリレート:121gを2時間かけて滴下しながら攪拌し、滴下終了後、5時間攪拌を続けた。次いで、ジエチレングリコールジメタクリレート:2135gを添加し、25℃での粘度が68mPa・s、固形分が20質量%、ジエチレングリコールジメタクリレートが80質量%のウレタンメタクリレート樹脂組成物(UMA-1)を得た。
なお、表1に示すコバルト金属塩、水酸基含有芳香族3級アミン、芳香族3級アミン、有機過酸化物、無機充填材の添加量は、合成例1~6のラジカル重合性樹脂組成物を100質量部としたときの添加量である。試験方法を以下に示す。
レイタンス層の脆弱部を除去したコンクリート板を-25℃雰囲気中で24週間養生した後、このコンクリート板に、先に調製した硬化性樹脂組成物を同温度条件下で、厚み10mmに塗布した。硬化時間は指触で確認し、6時間未満の硬化を○、6時間以上12時間未満の硬化を△、12時間以上の硬化を×とした。結果を表1に示した。
JIS K 6911(1995)「熱硬化性プラスチック一般試験方法」5.19圧縮強さ(2)試験片に記載の金型に、先に調製した硬化性樹脂組成物を-25℃雰囲気下で流し込み、同温度で24時間養生後、脱型し、-25℃環境下でJIS K6911「熱硬化性プラスチック一般試験方法」に準ずる圧縮強さを測定した。結果を表1に示した。なお、比較例1の硬化性樹脂組成物の圧縮強度については、比較例1の硬化性樹脂組成物が硬化しなかったため試験体を作製できず、測定できなかった。
なお、表1に示すコバルト金属塩、水酸基含有芳香族3級アミン、芳香族3級アミン、有機過酸化物、無機充填材の添加量は、合成例1~6のラジカル重合性樹脂組成物を100質量部としたときの添加量である。
-25℃硬化性で作製した試験体の表面乾燥性を測定した。乾燥性は指触で表面のべたつきが消失するまでの時間を確認し、3時間未満の乾燥を◎、6時間未満の乾燥を○、6時間以上12時間未満の乾燥を△、12時間以上の乾燥を×とした。結果を表1に示した。
また、第1及び第2実施態様の実施例1~16の硬化性樹脂組成物は、-25℃硬化した際、塗膜の乾燥性が比較例1に比べて優れている。
Claims (11)
- ラジカル重合性樹脂組成物(A)100質量部と、
下記一般式(I)で表される水酸基含有芳香族3級アミン(C-1)0.1質量部~10質量部と、
有機過酸化物(D)0.1質量部~10質量部と、
無機充填材(E)1.0質量部~500質量部と、
を含有し、
前記ラジカル重合性樹脂組成物(A)が、ビニルエステル樹脂、ウレタン(メタ)アクリレート樹脂およびポリエステル(メタ)アクリレート樹脂からなる群から選択される少なくとも1種のラジカル重合性樹脂(A-1)と、少なくとも分子中に2つ以上の(メタ)アクリロイル基を有するラジカル重合性不飽和単量体(A-2)と、を含み、
前記ラジカル重合性樹脂組成物(A)における少なくとも分子中に2つ以上の(メタ)アクリロイル基を有するラジカル重合性不飽和単量体(A-2)の含有量が35質量%~95質量%であることを特徴とする低温硬化断面修復材。 - コバルト金属塩(B)0.1質量部~10質量部をさらに含有することを特徴とする請求項2に記載の低温硬化断面修復材。
- コバルト金属塩(B)を含有しないことを特徴とする請求項1または2に記載の低温硬化断面修復材。
- 前記ラジカル重合性樹脂組成物(A)の粘度は、25℃で150mPa・s以下であることを特徴とする請求項1~4のいずれか1項に記載の低温硬化断面修復材。
- 前記(C-1)上記一般式(I)で表される水酸基含有芳香族3級アミンと前記(C-2)上記一般式(II)で表される芳香族3級アミンの配合量の質量比は20:1~1:1であることを特徴とする請求項2~5のいずれか1項に記載の低温硬化断面修復材。
- 前記有機過酸化物(D)は、ジベンゾイルパーオキサイド、ベンゾイルm-メチルベンゾイルパーオキサイド、m-トルオイルパーオキサイド、メチルエチルケトンパーオキサイド、キュメンハイドロパーオキサイドおよびt-ブチルパーオキシベンゾエートからなる群から選択される少なくとも1種の有機過酸化物であることを特徴とする請求項1~6のいずれか1項に記載の低温硬化断面修復材。
- 前記有機過酸化物(D)は、ベンゾイルm-メチルベンゾイルパーオキサイド、m-トルオイルパーオキサイド、メチルエチルケトンパーオキサイド、キュメンハイドロパーオキサイドおよびt-ブチルパーオキシベンゾエートからなる群から選択される少なくとも1種の有機過酸化物であることを特徴とする請求項1~7のいずれか1項に記載の低温硬化断面修復材。
- 前記無機充填材(E)は、タルク、炭酸カルシウム、珪砂および微粒子シリカからなる群から選択される少なくとも1種の粉末状無機充填材であることを特徴とする請求項1~8のいずれか1項に記載の低温硬化断面修復材。
- -25℃の雰囲気下で作製した硬化物は、JIS K6911「熱硬化性プラスチック一般試験方法」に準ずる試験において、24時間後の圧縮強度が20MPa以上であることを特徴とする請求項1~9のいずれか1項に記載の低温硬化断面修復材。
- コンクリート、アスファルトコンクリート、モルタル、木材および金属からなる群から選択される少なくとも1つの断面上に、-25℃以上の雰囲気下で、請求項1~10のいずれか1項に記載の低温硬化断面修復材を塗布して塗膜を形成し、該塗膜を硬化する工程を有することを特徴とする断面修復方法。
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