WO1997008219A1 - Composition de resine epoxy en une seule solution, composition de peinture resistant a la corrosion en une seule solution et procede d'enduction dans lequel lesdites compositions sont utilisees - Google Patents
Composition de resine epoxy en une seule solution, composition de peinture resistant a la corrosion en une seule solution et procede d'enduction dans lequel lesdites compositions sont utilisees Download PDFInfo
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- WO1997008219A1 WO1997008219A1 PCT/JP1996/001313 JP9601313W WO9708219A1 WO 1997008219 A1 WO1997008219 A1 WO 1997008219A1 JP 9601313 W JP9601313 W JP 9601313W WO 9708219 A1 WO9708219 A1 WO 9708219A1
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- epoxy resin
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
- B05D7/24—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 for applying particular liquids or other fluent materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/4007—Curing agents not provided for by the groups C08G59/42 - C08G59/66
- C08G59/4014—Nitrogen containing compounds
- C08G59/4042—Imines; Imides
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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
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
Definitions
- One-part epoxy resin composition one-part anticorrosion paint
- the present invention relates to a novel one-part type epoxy resin composition, a one-part type anticorrosion coating composition, and a coating using the same, which is capable of forming a film having particularly excellent adhesion and drying properties and excellent storage stability. About the method.
- epoxy resin compositions have been applied to various fields such as paints, sealants, adhesives, etc. because of their excellent properties, especially adhesive strength.
- most of the commonly used epoxy resin compositions are of the two-part type consisting of the base resin and the curing agent, and the curing reaction proceeds immediately after mixing.
- a latent curing agent such as block isocyanate in an epoxy resin, and the like.
- the curing agent is originally a heat-curing type, and is not practically satisfactory for room temperature drying.
- An object of the present invention is to provide a one-pack type epoxy resin composition, a one-pack type anticorrosion paint composition and a coating method using the same, which have solved the above-mentioned disadvantages of the prior art.
- Another object of the present invention is to provide a one-pack type epoxy resin composition and a one-pack type anticorrosive paint which are excellent in storage stability, workability, etc., and which can form a film having excellent drying properties, suitability for coating, adhesion and the like.
- An object of the present invention is to provide a composition and a coating method using the composition.
- the present invention relates to (1) (A) an epoxy resin having two or more epoxy groups in one molecule and having a number average molecular weight of 250 to 4,500,
- (D) a small number of urethane-modified epoxy resins, amide-modified epoxy resins, and dimer acid-modified epoxy resins Both have one modified epoxy resin (d-1) and a Z or softening point of 60 ° C or more, and are selected from xylene resins, ketone resins, coumarone resins, and petroleum resins.
- the above-mentioned one-pack type epoxy resin composition or one-pack type anticorrosion paint composition is used as the undercoat composition. It provides a subversion method.
- the component (A) used in the resin composition of the present invention has two or more, preferably 2 to 5 epoxy groups in one molecule, and has a number average molecular weight of about 250 to 4.5. 0 0, preferred Is an epoxy resin having an epoxy equivalent of about 350 to 3,000, and an epoxy equivalent of about 80 to 2,200, preferably 170 to 1,5. A value of 0 is preferred.
- Examples of the epoxy resin (A) include reacting a polyhydric alcohol, polyhydric phenol, or the like with an excess of epichlorohydrin, or reacting a polyhydric alcohol, a polyhydric alcohol, Alkylene oxides such as phenol (ethylenoxide, propylene oxide, etc.) by reacting adducts with excess epichlorohydrin Epoxy resin obtained by the above can be mentioned.
- examples of polyhydric alcohols include ethylene glycol, polyethylene glycol, propylene glycol, neopentinole glycol, and the like.
- phenolic resin tetrahydroxy phenolinoletan, novolak type polyvalent phenol, cresol monovalent type polyphenol and the like.
- epoxy resins (A) include 1,2,3—tris (2,3—epoxypropoxy) prono.
- Glycidinole phthalate Glycidyl phthalate, Glycidyl hexahydrophthalate, Glycidinoester, Tetrahydrophthalanoleate, Glyci diester Ginollester, Tetraglyci Ginorea Minogyfeminoretan, 3,4-Epoxy 6 — Mechanoresia , Triglycidyl oleocyanate, 3,4, -epoxycyclohexyl benzoyl methacrylate, polypropylene glycol glycidyl ether, and the like.
- the ketimine compound (B) used in the resin composition of the present invention is a curing agent for the epoxy resin (A), and has a primary amino group blocked with a hydroxyl group compound. It is a polyamine compound having at least one, preferably 1 to 6 in the molecule. This "primary amino group blocked by a carbonyl compound” is easily hydrolyzed, for example, in the presence of water, and is converted into a free primary amino group.
- a protected amino group typically represented by the following formula (1)
- R i represents a hydrogen atom or a hydrocarbon group
- R 2 represents Shows a hydride group.
- hydrocarbon group examples include alkyl groups such as a methyl group, an ethyl group, and a propyl group, cyclopropyl groups, a cyclopentyl group, and a cyclohexyl group. And a lower alkyl group.
- the polyamine compound may be any of aliphatic, alicyclic and aromatic.
- the polyamine compound needs to have a primary amino group capable of undergoing a curing reaction with the epoxy resin, but is generally preferably about 2,000 or less. It is advantageous to have a primary amino group equivalent in the range of about 30 to about 1,000.
- ⁇ Po Li A Mi emissions compounds generally about 5, 0 0 0 or less, preferable to rather about 3, 0 0 0 less preferred der and this having a number average molecular weight in the range of Ru c the Examples of the polyamine compound include ethylenediamine, propylenediamine, butylenediamine, hexamethylenediamine, and diethylene.
- Aliphatic polyamines such as triamine, triethylene tetramine, penethyleneethylenehexamine, etc .; xylylenediamine, diamidin Aromatic polyamines such as nojifeninolemethane and phenyleneamine; isophoronediamin, cyclohexylpropylamine, etc. Alicyclic polyamines; polyamidos having at least one primary amino group at the molecular terminal; and the like.
- a polyamine compound which does not contain a secondary amino group in the molecule that is, has only a ketiminated primary amino group, , ', Are particularly suitable because of their good storage stability as a one-pack type resin composition mixed with an epoxy resin.
- the secondary amino group is added to the above-mentioned epoxy resin or ethylenoxydipylglycidyl ether or the like. It is desirable to react with a monoepoxy compound or the like to tertiary.
- Examples of the compound that can be used to ketiminate the above-mentioned polyamine compound include any commonly used ketones, for example, acetone, methylethylketon, methylisobutylphenol , Diisobutyl ketone, cyclohexanone and the like.
- the ketimine compound in the present invention also includes a compound obtained by converting a polyamine compound into an anoresin with an aldehyde such as acetoaldehyde or benzoaldehyde. Is done.
- the reaction between the polyamine compound and these ketones can be carried out by a method known per se, and the substantial presence of the existing primary amino group at that time. It is desirable to use a quantitative ratio and reaction conditions such that all react with the ketones in order to facilitate the reaction (dehydration reaction) with methyl isobutyl ketone.
- ketones that are poorly soluble and have little steric hindrance.
- the mixing ratio of the ketimine compound (B) is such that one equivalent of the epoxy group in the epoxy resin (A) is ketiminized.
- the active hydrogen of the compound is 0.5 to 5.0 equivalents, preferably 0.
- the dehydrating agent (C) used in the resin composition of the present invention is mainly used to prevent the ketimine compound from decomposing by water and reacting with the epoxy resin. It absorbs water or reacts with water to remove water in the composition.
- the dehydrating agent (c) is not particularly limited, and a conventionally known dehydrating agent can be used. Representative examples thereof include the following.
- Powdery and highly porous metal oxides or carbides for example, synthetic silica, activated alumina, zeolite, activated carbon
- Metal alkoxides for example, aluminum isopropylate, anoleminium sec—butyrate, tetraisopropinolate titanate, tetranite n—butinoretitane Ginorekonomimu 2 — Proprate, Ginoreconem n — Butyrate, ethyl silicate, etc.
- 6Monofunctional isocyanates for example, methyl isocyanate, ethyl isocyanate, propinolay isocyanate, additive TI (Sumitomo Bayer Urethane Co., Ltd.) , Product name, Tri-Len Monoiso Associates), etc.
- dehydrating agents can be used alone or in combination of two or more.
- the amount of the dehydrating agent (C) used depends on the amount of water contained in the composition and the absorption, adsorption capacity, or reactivity of the dehydrating agent. :) About 0.1 to 25 parts by weight, preferably 0.2 to 15 parts by weight, per 100 parts by weight of the total solid content of the components (B) and (D) is suitable. is there. If the composition further comprises a pigment, the water in the pigment The amount may be increased as appropriate in consideration of the amount. If the amount is less than 0.1 part by weight, sufficient storage stability tends not to be obtained. On the other hand, if the amount exceeds 25 parts by weight, coating performance may be adversely affected. Not good.
- the component (D) at least one type of modified epoxy resin (d) selected from urethane-modified epoxy resin, amine-modified epoxy resin, and dimer-acid-modified epoxy resin is used.
- the use of the modified epoxy resin (d-1) is preferable because the adhesion to various materials (iron, non-ferrous metal, non-metal) is improved.
- the modified epoxy resin (d-1) has much lower reactivity with the polyamine compound than the epoxy resin (A), while the epoxy resin (A) and the polyamine compound have a lower reactivity.
- the reaction proceeds very quickly, and is a resin having film forming properties that is not substantially involved in curing.
- the recoatability is poor.
- urethane-modified epoxy resins are preferable because of excellent long-term storage properties of the composition.
- the urethane-modified epoxy resin include, for example, an amine-modified processed epoxy resin obtained by reacting an amine with an epoxy resin, or a polyisocyanate compound or a monoisocyanate. Those obtained by reacting an isocyanate compound.
- the epoxy resin those similar to the above-mentioned epoxy resin (A) can be used, and as the amines, aluminum amines, aliphatic amines, and aromatic amines. And alicyclic amines can be used.
- polyisocyanate compound a conventionally known aliphatic, aromatic or alicyclic polyisocyanate compound or the like can be used, and as the monoisocyanate compound, Is obtained by reacting phosgene with an aliphatic monoamine or aromatic monoamine, or a hydroxyl group-containing compound in one of the diisocyanate compounds.
- a reaction product can be used.
- the amide modified epoxy resin for example, a polyvalent phenol such as bisphenol A is used as the epoxy resin. After being subjected to addition polymerization to obtain an arbitrary molecular weight, an alkanolamine (monoethanolamine, dieethanolamine, triethanolamine) is added thereto. And the like, and those in which a terminal epoxy group is ring-opened by reacting a compound are preferred.
- the epoxy resin the same as the epoxy resin (A) can be used.
- an epoxy resin may be a dimer monoacid (oleic acid, linoleic acid, tol oil fatty acid, etc.).
- a dimer of unsaturated acid of the formula (1) is preferably added to a polyvalent phenol such as bisphenol A to obtain an arbitrary molecular weight.
- the epoxy resin the same as the epoxy resin (A) can be used.
- the modified epoxy resin (d-1) has a number average molecular weight of about 2,000 to 65,000, preferably 3,000 to 40,000. Preferably, it is in the range of 4,000 to 25,000. When the molecular weight is less than 2,000, adhesion and water resistance are reduced, while when it exceeds 65, 000, viscosity is increased and workability and storage stability may be adversely affected, which is preferable. Not good.
- the mixing ratio is 5 to 95 parts by weight, preferably 1 to 100 parts by weight of the epoxy resin (A) in terms of resin solid content. 0 to 90 parts by weight are preferred.
- the mixing ratio of the resin (d-1) is less than 5 parts by weight, the drying property is poor, while on the other hand, it exceeds 95 parts by weight. If this is not the case, the suitability for repainting during repair may be poor.
- the resin (d-2) has a softening point of 60 ° C. or higher and is at least one selected from xylene resin, ketone resin, coumarone resin, and petroleum resin. It is a kind of resin. A preferred softening point is about 70 to 170 ° C.
- the xylen resin may be, for example, a phenol resin obtained by reacting methaxylene and formaldehyde with a catalyst such as sulfuric acid. It is preferable to react phenols such as ethanol and ethanol, and rosins.
- ketone resin is, for example, a resin obtained by reacting a ketone such as cyclohexanone with formaldehyde with a catalyst such as sulfuric acid.
- the resins (d-2) for example, a naphtha fraction at 160 to 180 ° C (coumarone, indene, styrene, etc.) is used. Those obtained by purifying and polymerizing with heat or a catalyst such as sulfuric acid are preferred.
- petroleum resins include, for example, those obtained by subjecting residual olefins of Cs or more in petroleum cracking to a cation polymerization reaction with a Freedel-Craft type catalyst. Is preferred.
- the mixing ratio thereof is 5 to 70 parts by weight, preferably 10 to 100 parts by weight, based on 100 parts by weight of the epoxy resin (A) in terms of resin solid content. 50 parts by weight are preferred. If the blending ratio of the resin (d-2) is less than 5 parts by weight, the drying property is poor. On the other hand, if it exceeds 70 parts by weight, the recoating suitability at the time of repair is poor and the coating film performance is adversely affected. I don't like it.
- the resin composition of the present invention is an organic solvent type composition containing the components (A) to (D).
- organic solvent used examples include aromatic hydrocarbons such as toluene and xylene; ketones such as acetate, methylethylketone, methylisobutylinoletone, and methylisobutylinoletone.
- ketones such as acetate, methylethylketone, methylisobutylinoletone, and methylisobutylinoletone.
- Known solvents such as tones; estenoles such as ethyl acetate, n-butyl acetate, and isobutyl acetate; and alcohols such as ethyl alcohol, propyl alcohol, and butyl alcohol can be used.
- the resin composition of the present invention may contain pigments such as coloring pigments, extender pigments, and anti-reflective pigments, and various additives such as thickeners, plasticizers, fillers, and dispersants. Good.
- the present invention relates to a one-part anticorrosive coating composition
- a one-part anticorrosive coating composition comprising, in addition to the components (A) to (D), zinc powder (E) in an amount of from 20 to 95% by weight in the heating residue of the coating film.
- zinc powder in an amount of from 20 to 95% by weight in the heating residue of the coating film.
- (E) may be used in combination with other metal powders such as aluminum powder.
- Examples of the zinc powder (E) include zinc zinc powder.
- metal zinc powder is used. It is suitable.
- the zinc powder is usually suitable in a spherical form having a particle size of about l to 10 ⁇ m, and its blending amount is usually 20 to 95% by weight in the heating residue of the coating film. The content is 70 to 90% by weight. If the amount is less than 20% by weight, the desired anticorrosive properties cannot be obtained, while if it exceeds 95% by weight, storage stability and film-forming properties are adversely affected.
- aluminum powder in combination with zinc powder.
- a scaly powder having a size of usually about l to 150 / m is suitable, and a reefing type or a non-relief type is preferable. It can be of any type.
- the aluminum powder is blended, it is desirable that the aluminum powder is blended so as to contain 1 to 20% by weight, preferably 5 to 15% by weight, in the heating residue of the coating film.
- the resin composition or the anticorrosion coating composition of the present invention can be used as a coating material, a sealing agent, and the like, and can be used for metals (iron, aluminum, zinc, and the like), wood, plastics, and stone materials.
- a coating method a general method such as brush coating, spray coating, and all-over-one coating can be used.
- the coating amount of the resin composition or anticorrosion coating composition of the present invention is not particularly limited, but generally, the clear composition is about 5 to 80 m in dry film thickness, preferably about 10 to ⁇ 0 ⁇ m. In the case of the colored composition, the dry film thickness is about 10 to;
- L 20 m is suitable.
- the present invention provides a method of performing a topcoat after a basecoat on a substrate surface, wherein the one-pack type epoxy resin composition or the one-pack type anticorrosion paint composition is used as the undercoat composition. It also provides a unique coating method.
- the paint used for the top coat in the above coating method is not particularly limited, and a usual top coat composition can be used. Specifically, for example, an overcoat of an alkyd resin, a chlorinated rubber, an epoxy resin, a silicone alkyd resin, a urethane resin, a silicone acryl resin, a fluororesin, etc. Paint compositions can be used.
- the ketimine compound (B) as a curing agent is gradually hydrolyzed by water in the air or the like to form a primary alcohol. Reproduces the amino groups and cures by reacting with the epoxy groups in the epoxy resin (A), exhibiting excellent corrosion protection.
- the drying property and the adhesion are improved by the component (D) which is a specific modified epoxy resin or the like which is not substantially involved in curing.
- the epoxy resin composition of the present invention containing the components (A) to (D) has good storage stability, is excellent in workability since it is a one-pack type, and has good adhesion, drying, and repair. It is particularly suitable for undercoat paints and sealing agents because it has excellent properties and suitability for overcoating. Further, the anticorrosion coating composition of the present invention further containing zinc powder (E) can form a coating film having extremely excellent anticorrosion properties, and is particularly useful as a primer for steel materials.
- Parts and “%” indicate “parts by weight” and “% by weight”.
- each clear resin composition was obtained with the composition and the amount (parts) shown in Table 1.
- compositions of Examples 1 to 7 and Comparative Examples 1 to 5 obtained above were evaluated by performing a drying, storage stability and adhesion performance test.
- the test method is as follows. Drying property: The test composition was applied to a film Apply it on a 0.8 x 70 x 150 mm tin plate with a locator, prepare two test coated plates at 5 ° C and 20 ° C.
- the evaluation criteria are: A within 8 hours, B within 16 hours,
- C indicates within 24 hours
- D indicates within 48 hours
- E indicates over 48 hours
- the evaluation criteria show that A shows no abnormality, B shows thickening or sedimentation, and C shows that it has gelled.
- Adhesion Cold rolled steel sheet (JISG-314), hot-dip galvanized steel sheet (JISG-314SPC-SD), anore aluminum plate (JISH-40000)
- the sample composition was prepared using a film applicator with a gap of 100 m using 0.84 x 7 0, using four types of specimens: 505 2 P) and a mortar plate (JISR-521).
- x 150 mm on each substrate (However, the thickness of the flat plate is 1 O x 100 x 200 mm) and applied for 7 days at 20 ° C ⁇ 65% RH It dried and each test coating board was created. These test coated panels were placed in a humidity tester (50 ° (relative temperature: 95% or more)) for 240 hours.
- each colored resin composition was obtained in the composition and the amount (part) shown in Table 3.
- Example 14 to 17 Using the composition of Example 1 as an undercoat paint, a dry film thickness of about 30/100 was applied on a mortal plate of 100 ⁇ 100 ⁇ 200 mm by brush. / m, 20 ° C '65% RH After drying in an atmosphere for 24 hours, apply each of the top coatings shown in Table 5 with a brush to a dry film thickness of about 30; / m, and then apply at 20 ° C '65% Each coated plate was obtained by drying in an atmosphere of RH for 7 days.
- Example 14 Each coated plate was obtained in the same manner as in Example 14 except that the undercoat paint and the overcoat paint in Example 14 were changed to the combinations shown in Table 5.
- Example 14 to 21 and Comparative Examples 10 to 13 were subjected to a performance test of suitability for overcoating and suitability for recoating (repairability).
- the test method is as follows.
- Top coat aptitude An adhesion test was performed according to the X-stick tape method specified in JIS K-540-8.5.5.3.
- the evaluation criteria are as follows: ⁇ indicates that there was no abnormality, B indicates that the overcoat was partially peeled off, and C indicates that the overcoat was completely peeled off.
- the evaluation criteria are as follows: A is normal, B is partially C indicates the occurrence of tides on the entire surface,
- Topcoat paints I, II, IE and IV indicate the following, respectively.
- Topcoat paint I Chlorinated rubber-based organic solvent-based paint "Clean Lavact", manufactured by Kansai Paint Co., Ltd.
- Topcoat paint Epoxy resin organic solvent paint “ESCO” manufactured by Kansai Paint Co., Ltd.
- Top coat m Polyurethane resin-based organic solvent-based paint “Letane 600”, manufactured by Kansai Paint Co., Ltd.
- Topcoat paint IV Fluorine resin-based organic solvent-based paint Ron HD ”manufactured by Kansai Paint Co., Ltd.
- Examples 22 to 26 The composition of Example 8 described above was applied to a 0.8 xl 75 xl 50 mm steel plate with a brush so as to have a dry film thickness of about 50 m.
- C-65 After drying for 24 hours in an atmosphere of 5% RH, apply each of the top coatings shown in Table 6 with a brush to a dry film thickness of about 30 m, and apply it at 20 ° C. Each coated plate was obtained by drying in an atmosphere of 65% RH for 7 days. Comparative Examples 14 to 18 Each coated plate was obtained in the same manner as in Example 22 except that the undercoat paint and the topcoat paint were changed to the combinations shown in Table 6 in Example 22.
- Example 8 Example 8
- topcoat paints I, ⁇ , ⁇ , and IV are as described above, and the topcoat paint V indicates the following.
- Topcoat V Alkyd resin organic solvent-based paint "SD Marin H", manufactured by Kansai Paint Co., Ltd.
- each anticorrosion paint composition (a zinc paint sheet) was obtained with the composition and the amount shown in Table 7. (Note 7) to (Note 9) in Table 7 are as follows.
- the coating compositions of Examples 27 to 34 and Comparative Examples 19 to 21 obtained above were evaluated by performing storage stability, anticorrosion, and overcoating performance tests.
- the test method for storage stability is as described above.
- the test method for anticorrosion property and suitability for overcoating is as follows.
- Corrosion protection After diluting the test composition with xylene by 15% by dividing it by air, it was applied on a steel plate by air spraying so as to have a dry film thickness of 50 m. Five . 7 days in RH atmosphere It dried and each test coating board was created.
- the steel sheets used were Type 1 Kelene (sandblasted steel sheet ISOS a2.5) and Type 2 Kelene (power tool-treated steel sheet ISOS t3). Crosscut scratches were put on the painted surface of each test coated plate with a knife.
- the test coated plate was subjected to a salt spray test at 35 ° C for 2,000 hours, and the occurrence of reddish color was observed.
- the evaluation criteria are as follows: A indicates no abnormality, B indicates partial redness, and C indicates full redness. At the same time, we observed the occurrence of white contracts.
- topcoat After diluting the test composition with xylene by 15%, apply it to a sandblasted steel plate by air spraying to a dry film thickness of 50 m. After drying for 24 hours in an atmosphere of 0 ° C and 65% RH, Epomaline (an epoxy-based organic solvent-based paint manufactured by Kansai Paint Co., Ltd.) is used as a top coat and dried with a brush. It was applied so as to have a thickness of about 30 / zm, and was dried in an atmosphere of 20 ° C and 65% RH for 7 days to obtain each coated plate. For each of the obtained coated plates, the suitability for overcoating was examined in the same manner as described above.
- Epomaline an epoxy-based organic solvent-based paint manufactured by Kansai Paint Co., Ltd.
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Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/029,096 US6045873A (en) | 1995-08-23 | 1996-05-17 | One-pack epoxy resin composition, one-pack corrosion resistant paint composition, and coating method using said compositions |
DE69635805T DE69635805T2 (de) | 1995-08-23 | 1996-05-17 | Einkomponenten-epoxidharzzusammensetzung, einkomponenten-korrosionsbeständige lckzusammensetzung, verfahren zum anstreichen mit dieser zusammensetzung |
EP96915181A EP0846710B1 (en) | 1995-08-23 | 1996-05-17 | One-pack epoxy resin composition, one-pack corrosion-resistant paint composition, and coating method using said compositions |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21428195A JP3370213B2 (ja) | 1994-12-16 | 1995-08-23 | 一液形エポキシ樹脂組成物、一液形防食塗料組成物及びこれらを用いた被覆方法 |
JP7/214281 | 1995-08-23 |
Publications (1)
Publication Number | Publication Date |
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WO1997008219A1 true WO1997008219A1 (fr) | 1997-03-06 |
Family
ID=16653142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP1996/001313 WO1997008219A1 (fr) | 1995-08-23 | 1996-05-17 | Composition de resine epoxy en une seule solution, composition de peinture resistant a la corrosion en une seule solution et procede d'enduction dans lequel lesdites compositions sont utilisees |
Country Status (6)
Country | Link |
---|---|
US (1) | US6045873A (ja) |
EP (1) | EP0846710B1 (ja) |
KR (1) | KR100246178B1 (ja) |
CN (1) | CN1075525C (ja) |
DE (1) | DE69635805T2 (ja) |
WO (1) | WO1997008219A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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- 1996-05-17 WO PCT/JP1996/001313 patent/WO1997008219A1/ja active IP Right Grant
- 1996-05-17 US US09/029,096 patent/US6045873A/en not_active Expired - Fee Related
- 1996-05-17 DE DE69635805T patent/DE69635805T2/de not_active Expired - Fee Related
- 1996-05-17 KR KR1019980701323A patent/KR100246178B1/ko not_active IP Right Cessation
- 1996-05-17 CN CN96196433A patent/CN1075525C/zh not_active Expired - Lifetime
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111799052A (zh) * | 2020-06-29 | 2020-10-20 | 浙江中杭新材料科技有限公司 | 一种具有表面功能膜层的烧结钕铁硼磁体 |
CN111799052B (zh) * | 2020-06-29 | 2022-11-15 | 浙江中杭新材料科技有限公司 | 一种具有表面功能膜层的烧结钕铁硼磁体 |
Also Published As
Publication number | Publication date |
---|---|
EP0846710A1 (en) | 1998-06-10 |
EP0846710A4 (en) | 2001-06-27 |
CN1193985A (zh) | 1998-09-23 |
KR19990044090A (ko) | 1999-06-25 |
DE69635805T2 (de) | 2006-10-19 |
US6045873A (en) | 2000-04-04 |
EP0846710B1 (en) | 2006-02-08 |
CN1075525C (zh) | 2001-11-28 |
KR100246178B1 (ko) | 2000-04-01 |
DE69635805D1 (de) | 2006-04-20 |
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