WO2010038943A2 - 방향족 술폰산 및 우레탄 관능성 레올로지 조정제를 포함하는, 내부침투성이 우수한 양이온 전착도료용 수지 조성물 - Google Patents
방향족 술폰산 및 우레탄 관능성 레올로지 조정제를 포함하는, 내부침투성이 우수한 양이온 전착도료용 수지 조성물 Download PDFInfo
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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
- C09D5/44—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications
- C09D5/4419—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications with polymers obtained otherwise than by polymerisation reactions only involving carbon-to-carbon unsaturated bonds
- C09D5/443—Polyepoxides
- C09D5/4453—Polyepoxides characterised by the nature of the curing agent
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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
- C09D5/44—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications
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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
- C08G59/182—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 using pre-adducts of epoxy compounds with curing agents
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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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- 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
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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
- C09D5/44—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications
- C09D5/4419—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications with polymers obtained otherwise than by polymerisation reactions only involving carbon-to-carbon unsaturated bonds
- C09D5/443—Polyepoxides
- C09D5/4434—Polyepoxides characterised by the nature of the epoxy binder
- C09D5/4438—Binder based on epoxy/amine adducts, i.e. reaction products of polyepoxides with compounds containing amino groups only
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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
- C09D5/44—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications
- C09D5/448—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications characterised by the additives used
Definitions
- the present invention relates to a resin composition for cationic electrodeposition paints excellent in internal permeability, including aromatic sulfonic acid and a urethane functional rheology modifier, and more particularly, to (1) a reaction product of a polysulfide compound and an epoxy compound.
- a base resin containing a reaction product of an amine compound and an epoxy compound (2) a curing agent resin containing a reaction product of a modified polyol compound derived from a pseudo-Mannich reaction product of a phenol compound, an aliphatic or aromatic amine compound, and formalin with a blocked polyisocyanate compound; (3) aromatic sulfonic acid; And (4) a rheology modifier having a urethane functional group, which is excellent in water dispersion stability and internal permeability, exhibits excellent antibacterial properties, and exhibits excellent edge corrosion resistance as well as excellent flexibility, rust resistance and paintability of the coating film.
- the present invention relates to a resin composition for cationic electrodeposition paints, which is particularly suitable as an automobile and industrial undercoat, and to cationic electrodeposition paints containing the same.
- electrodeposition paints have been applied to automobiles in the middle of the 20th century, cationic electrodeposition paints have been continuously developed in terms of performance and workability until 40 years later. Thanks to these technical developments, electrodeposition coating is applied as most anti-rust coatings for automobiles, and in addition, there is a need for electrodeposition coating having product coating efficiency, quality uniformity and environmental friendliness.
- an epoxy resin having excellent rust resistance is used, and a urethane cured structure is provided to form a coating film of excellent quality.
- Conventional cationic electrodeposition base resins include polyols and epoxy resins imparted with ethoxylate-type bisphenols, and as curative resins, diisocyanates and alcohol-based compounds having hydroxy functional groups capable of dissociation. Most of the reaction products were used. Specifically, the conventional cationic electrodeposition resin composition mixes an epoxy resin having a number average molecular weight between 360 and 20,000 with a plasticizer of bisphenol-A and its analogs or modified polyethers, followed by amine and diol in the presence of excess solvent. After addition reaction at 70-170 ° C., the organic solvent contained in the reaction product was removed by vacuum recovery at high temperature, the curing agent resin was mixed with the reaction product from which the solvent was removed, and sufficiently neutralized with organic acid. It is conventionally produced by a manufacturing process in the form of water dispersion by adding deionized water for 12 hours.
- Korean Patent Registration No. 10-0831205 uses a compound containing a polysulfide bond in order to improve the smoothness, rust resistance, and flexibility compared to the general electrodeposition resin.
- a base having excellent smoothness and flexibility of a coating film containing a reaction product obtained by reacting a polysulfide compound with an epoxy compound there is provided a cationic electrodeposition resin composition comprising a resin, the reaction product of a polyol compound derived from the Mannich reaction product excellent in rust resistance and adhesion and a blocked polyisocyanate as a curing agent resin.
- the electrodeposition resin composition disclosed in this patent is a form in which a general organic acid is used as a neutralized acid and then water-dispersed, and contains barium chelate as a catalyst.
- a general organic acid is used as a neutralized acid and then water-dispersed, and contains barium chelate as a catalyst.
- smoothness, rust resistance, and flexibility were improved, and although they exist stably under normal storage conditions, there are problems in storage at low and high temperatures due to the limitation of water-soluble particle resin dispersed by general organic acids.
- the problem of increasing viscosity at low temperature below 5 ° C. and precipitation problems when exposed to more than two days at 60 ° C. or more is likely to occur. That is, it is not a problem in storage conditions for general use, but it is true that there is a limit to use in a place where the temperature changes rapidly.
- the flexibility of polysulfide may also result in flow at the edges during curing, resulting in insufficient coating.
- US Pat. No. 6,017,431 introduces sulfamic acid that can inhibit bacteria in electrodeposition baths and be used as neutralizing agents.
- the sulfamic acid introduced here is represented by the following chemical structural formula.
- R represents hydrogen or an alkyl (carbon number: 1 to 4) group, and preferably has the following chemical structural formula.
- Korean Patent Application No. 1991-0010475 discloses an electrodeposition rheology modifier that improves edge coating.
- This rheology modifier is characterized in that it is prepared by mixing a cationic polyepoxide-amine reaction product with a poly epoxide crosslinker and heating the crosslinked mixture.
- This rheology modifier is effective not only for improving edge coating properties, which prevents the coating from becoming thin and easily corroded by flowability during coating film curing at the corners, but also for increasing contamination resistance.
- the rheology control agent has a problem that the generation of marks and deterioration of appearance occurs by controlling the flowability and participating in the curing on the coating film surface.
- Japanese Patent Application Nos. 1990-207406 and 1991-348372 use polyamide resins as base resin compositions to improve the rust resistance and curability of edges. It shows the problems such as deterioration in appearance and lack of flexibility, and to solve the problem further, the plasticizer is used in parallel, but due to the use of the plasticizer, water resistance and rust resistance are induced.
- the present invention is excellent in water dispersion stability and internal permeability, exhibits excellent antibacterial properties, excellent flexibility of the coating film, anti-rusting and paintability as well as excellent edge corrosion resistance of the automobile And it aims at providing the resin composition for cationic electrodeposition paints especially suitable as an industrial undercoat, and a cationic electrodeposition paint containing this.
- a base resin containing a reaction product of a polysulfide compound and an epoxy compound and a reaction product of an amine compound and an epoxy compound;
- a cationic electrodeposition paint comprising the resin composition and pigment for the cationic electrodeposition paint of the present invention.
- the resin composition for cationic electrodeposition paints according to the present invention is excellent in water dispersion stability and internal permeability, exhibits excellent antibacterial properties, is excellent in flexibility, rust resistance and paintability of coatings, and exhibits excellent edge corrosion resistance for automobiles and industrial use. It can be particularly suitably utilized as the undercoat, and the manufacturing cost can be drastically reduced since it can be manufactured using only a reactor without a separate dispersing facility.
- the electrodeposition resin composition consists of a base resin and a curing agent resin as main components.
- the base resin is a component of the final coating film together with the curing agent resin, and the properties of the final coating film are exhibited by its chemical and physical properties.
- Epoxy-based compounds are most often used as the base resin because they provide excellent anti-rusting property, adhesion, heat resistance and the like to the final coating film.
- the epoxy-based compound reacts with the amine compound to provide the hydroxyl groups necessary for the reaction with dissociated isocyanate groups in the curing agent resin during coating.
- epoxy compounds are most commonly used for the coating of bases having excellent rust resistance and requiring rust resistance.
- flexibility is inferior.
- the base resin used in the present invention contains a reaction product of a polysulfide compound and an epoxy compound, and a reaction product of an amine compound and an epoxy compound.
- the base resin of the present invention includes the reaction product of the polysulfide compound and the epoxy compound, thereby improving the smoothness and flexibility of the coating film of the cationic electrodeposition resin composition according to the present invention.
- the polysulfide compound usable in the preparation of the base resin is not particularly limited, but preferably, the compound represented by the following Chemical Formula 1 is used alone or in combination:
- n an integer of 0 to 50.
- the epoxy compound reacting with the polysulfide compound and the amine compound described below preferably has a molecular weight of 100 to 2,000, more preferably 100 to 1,500, and even more preferably 100 to 1,000. If the weight-based molecular weight of the epoxy compound is less than 100, there is a fear that it does not exhibit sufficient flexibility and rust resistance, and if it exceeds 2,000 may be difficult to handle in the manufacturing process due to the high viscosity.
- the epoxy compound is each independently a compound of formula (2); A compound of formula 3; Mixtures of compounds of Formulas 2 and 3; And at least one compound selected from the group consisting of reaction products of at least one of these compounds with a compound of formula 4:
- R 1 represents C 1-20 alkyl
- R 2 represents C 1-5 alkylene
- R 3 represents C 17-35 phenolic ether
- R 4 represents C 1-8 alkylene.
- aryl means an aromatic ring such as phenyl or naphthalene.
- the compounds of formulas 2 to 4 each represent a compound of formulas 5 to 7.
- n represents an integer of 0-6.
- reaction product of the polysulfide compound and the epoxy compound includes a compound of Formula 8 or 9:
- each R 1 independently represents C 1-20 alkyl
- each R 2 independently represents C 1-5 alkyl
- R 3 represents C 17-35 phenolic ether
- n is independently 0 to 50 Represents an integer.
- reaction product of the sulfide compound and the epoxy compound comprises compounds of Formulas 10 and 11:
- each R 2 independently represents C 1-5 alkylene, n represents an integer of 0 to 50, and m represents an integer of 0 to 6;
- the compounds of Formulas 8 to 11 may each independently be in the form of being combined with other sulfide compounds or epoxy compounds.
- reaction of the polysulfide compound and the epoxy compound may be represented as in Scheme 1 below.
- R 1 represents C 1-20 alkyl
- R 2 represents C 1-5 alkylene
- R 3 represents C 17-35 phenolic ether
- n represents an integer from 0 to 50.
- reaction between the polysulfide compound and the epoxy compound may be represented as in Scheme 2 below.
- the amine compound is at least one compound independently selected from the group consisting of HO-R5-NH-R5-OH and (CH 3 ) 2 N-R5-NH 2 , wherein R 5 is each independently Denotes C 1-8 alkyl.
- the content of the sulfide compound is 10 to 30% by weight, preferably 10 to 25% by weight, more preferably 10 to 20% by weight based on the base resin. If the content of the compound is less than 10% by weight, the effect of improving the smoothness, flexibility, and rust resistance of the coating film is insignificant. If the content is more than 30% by weight, the viscosity of the reactants is high, which makes handling difficult.
- the content of the epoxy compound in the compound constituting the base resin is 40 to 80% by weight, preferably 50 to 80% by weight, more preferably 60 to 80% by weight based on the base resin.
- the content of the compound is less than 40% by weight, the hydroxyl group required for the reaction with the curing agent resin is insufficient, the curability and rust resistance of the coating film is lowered. However, coating film flexibility and weather resistance are lowered.
- the content of the amine compound in the compound constituting the base resin is 10 to 30% by weight, preferably 10 to 25% by weight, more preferably 10 to 20% by weight based on the base resin. If the content of the compound is less than 10% by weight, the hydroxyl group in the base resin required for the reaction with the curing agent resin is insufficient, the curability and rust resistance of the coating film is lowered, if it exceeds 30% by weight excessively high viscosity during the reaction risk of gelation There is this.
- the reaction product content of the sulfide compound and the epoxy compound is 30 to 70% by weight, preferably 30 to 50% by weight, more preferably 30 to 40, based on the base resin. Weight percent.
- the reaction product content of the amine compound and the epoxy compound contained in the base resin is 30 to 70% by weight, preferably 50 to 70% by weight, more preferably 60 to 70% by weight based on the base resin.
- the content of the reactants is less than 30% by weight, it is difficult to obtain the effect of improving the smoothness and flexibility of the coating film by sulfide.
- the content of the reactants exceeds 70% by weight, the reaction stability and storage stability of the final electrodeposition resin are lowered.
- the amount of the base resin included in the cationic electrodeposition resin composition according to the present invention is preferably 30 to 80% by weight of the sum of the base resin and the curing agent resin, more preferably 50 to 75% by weight, even more preferably 60 to 70 wt%. If the amount of the base resin is less than 30% by weight of the sum of the base resin and the curing agent resin, the smoothness, the softness and the rust resistance are inferior.
- the curing agent resin reacts with the base resin to form a final coating film. Specifically, the isocyanate group and the hydroxyl group included in the base resin react with each other at a predetermined temperature or more to form a stable coating film. Since the curing agent resin is prepared in a state where the base resin is uniformly mixed with each other, a blocked isocyanate is used so that the reaction between the hydroxyl group of the base resin and the isocyanate group of the curing agent resin does not occur at a temperature below a certain temperature. Together, the coating film is formed to impart excellent curability, rust resistance and water resistance.
- the curing agent resin used in the present invention contains a reactant of a modified polyol compound with a blocked polyisocyanate compound, wherein the modified polyol compound is derived from the pseudo-Mannich reaction product of a phenol compound, an aliphatic or aromatic amine compound, and formalin.
- the "Mannich-like reaction” refers to an aldehyde, unlike the original Mannich reaction, which proceeds between a compound containing an aldehyde group and a compound containing a primary or secondary amine compound and a carbonyl group.
- Dehydration condensation reaction in a form similar to the Mannich reaction, which proceeds between a compound containing a group and a primary or secondary amine compound and a phenolic compound.
- the product containing active hydrogen of the amine compound prepared through this pseudo-Mannich reaction is widely used as a low temperature curing agent of a general epoxy paint. It is known that when the pseudo-Mannich reaction product containing active hydrogen of such an amine compound is introduced into an epoxy curing agent, the curability at room temperature and low temperature is excellent.
- the active hydrogen of the amine compound is removed, and after the quasi-Mannni reaction, a reactive polyhydric group is introduced in the form of a modified polyol.
- the isocyanate group and the urethane reaction was induced to obtain a coating film excellent in the curability, as a result it was able to improve the rust resistance.
- the phenolic compound used in the pseudo-Mannich reaction is selected from the group consisting of phenolic compounds such as cresol, butylphenol, octylphenol, nonylphenol, phenol, preferably from the group consisting of phenol, octyl phenol and nonyl phenol. More preferably, one or two selected from the group consisting of phenol and nonyl phenol are mixed and used.
- Aliphatic or aromatic amine compounds used in the pseudo-Mannich reaction consist of ethylenediamine, trimethylenediamine, hexamethylenediamine, oxamethylenediamine, diethylenetriamine, triethylenetetraamine, pentaethylenehexaamine and metaxylenediamine. It is preferable to use 1 type or in mixture of 2 or more types selected from the group.
- the amount of the phenolic compound used in the quasi-Mannich reaction is preferably 10 to 30% by weight, more preferably 15 to 25% by weight, based on the total amount of raw materials input for the preparation of the resultant quasi-Mannich reaction product, Even more preferably 15 to 20% by weight.
- the amount of the phenolic compound is less than 10% by weight based on the total amount of the raw materials to be added, there is a concern that the rust preventive property may be lowered. On the contrary, when the amount of the phenolic compound is too large, the viscosity and the degree of curing may be excessively high.
- the amount of aliphatic or aromatic amine compound used in the pseudo-Mannich reaction is preferably 10 to 30% by weight, more preferably 15 to 25% by weight, even more preferably 20 to 25% by weight, based on the total amount of raw materials to be introduced. If the amount of the aliphatic or aromatic amine compound used in the pseudo-Mannich reaction is less than 10% by weight based on the total amount of the raw materials to be added, there is a possibility that an unreacted substance may be generated in the reactants, thereby not being able to exhibit sufficient coating film properties. Exceeding the wt% results in the formation of urea functional groups and insoluble tee during or after the reaction.
- the amount of formalin used in the quasi-Mannich reaction is preferably 15 to 45% by weight, more preferably 20 to 40% by weight, even more preferably 25 to 35% by weight based on the total amount of raw materials to be added. . If the amount of formalin used in the pseudo-Mannich reaction is less than 15% by weight based on the total amount of the input raw materials, a large amount of unreacted amine is generated. If the amount of formalin exceeds 45% by weight, the viscosity becomes too high and there is a risk of gelation.
- the quasi-Mannich reaction product can occur in various varieties depending on the phenolic compound and the aliphatic or aromatic amine compound.
- the pseudo-Mannich product has the structure of Formula 12.
- R 6 is each independently a substituted or unsubstituted ortho-hydroxy phenyl group derived from cresol, butylphenol, octylphenol, nonylphenol or phenol, preferably from nonylphenol or phenol.
- the amount of quasi-Mannich reaction product used to prepare the curing agent resin is preferably 1 to 20% by weight, more preferably 5 to 15% by weight, even more preferably 5 to 5% by weight based on 100% by weight of the resulting curing agent resin. 10% by weight. If the amount of the Mannich reaction product is less than 1% by weight, the effect of improving the curing performance may be insignificant. If it exceeds 20% by weight, the viscosity may be high and the initial curing property may be fast, resulting in deterioration of appearance.
- the modified polyol used in the curing agent resin is a reaction product of a hydroxy group imparting compound selected from a hydroxy group-containing amine, an epoxy compound and combinations thereof with the quasi-Mannich reaction product described above.
- the hydroxy group-containing amine is preferably selected from the group consisting of monoethanolamine, diethanolamine, monoisopropanolamine, diisopropanolamine, monoethylethanolamine, monomethylethanolamine, preferably It is selected from the group consisting of ethyl ethanol amine, methyl ethanol amine.
- the epoxy compound is preferably selected from the group consisting of phenylglycidyl ether and butylglycidyl ether.
- the amount of the hydroxy group-providing compound used in the preparation of the modified polyol is preferably 5 to 20 parts by weight, more preferably 6 to 15 parts by weight, more preferably based on 100 parts by weight of the quasi-Mannich reaction product. Is 7 to 10 parts by weight.
- the amount of the hydroxy group-providing compound is less than 5 parts by weight per 100 parts by weight of the quasi-Mannich reaction product, the hydroxyl group at the end of the reaction may not be sufficient, and thus, sufficient curing reaction may not be performed after the isocyanate group. There is a fear that the stability of the reaction product may deteriorate.
- the modified polyol which is a reaction product of the quasi-Mannich reaction product and the hydroxyl group-providing compound, is preferably, but not limited to, having a structure of formula (13).
- each R 6 independently represents a substituted or unsubstituted ortho-hydroxy phenyl group derived from cresol, butylphenol, octylphenol, nonylphenol or phenol, preferably from nonylphenol or phenol
- each R7 is Independently represents a residue derived from a glycidyl ether compound, preferably butylglycidyl ether or phenylglycidyl ether, with R8 representing monoethanolamine, diethanolamine, monoisopropanolamine, diisopropa Residues derived from nolamine, monoethylethanolamine or monomethylethanolamine, preferably from monoethylethanolamine or monomethylethanolamine.
- the amount of the modified polyol compound used in the production of the curing agent resin is preferably 1 to 20% by weight, more preferably 5 to 15% by weight of the total amount of the raw materials added for the production of the curing agent resin, more More preferably 5 to 10% by weight.
- the amount of the modified polyol compound is less than 1% by weight of the total raw material for preparing the curing agent resin, the effect of improving the curing property may be insignificant.
- the amount of the modified polyol compound is greater than 20% by weight, the viscosity may be high and the initial curing property may be accelerated, resulting in poor appearance.
- the blocked polyisocyanate capable of reacting with the modified polyol compound in the preparation of the curing agent resin of the present invention may be freely selected from those known to be used in the cationic electrodeposition resin composition.
- Blocked polyisocyanates are preferably, but are not limited to, reaction products of aliphatic or aromatic diisocyanates with hydroxy group-containing acrylate compounds or alcohol compounds.
- the aliphatic or aromatic diisocyanate is preferably in the group consisting of 2,4-toluene diisocyanate, 2,6-toluene diisocyanate, diphenylmethane-4,4'-diisocyanate, tetramethylene and hexamethylene diisocyanate Selected from the group consisting of 2,4-toluene diisocyanate, 2,6-toluene diisocyanate, diphenylmethane-4,4'-diisocyanate, tetramethylene and hexamethylene diisocyanate.
- the acrylate compound having the hydroxy group 2-hydroxyethyl methacrylate is preferable.
- the alcohol compound is preferably selected from the group consisting of ethylene glycol monobutyl ether, diethylene glycol monobutyl ether, trimethylolpropane and propylene glycol.
- the amount of blocked polyisocyanate used in the preparation of the curing agent resin in the present invention is preferably 20 to 75% by weight, more preferably 25 to 60% by weight, more preferably 25 to 60% by weight, of the total amount of the raw materials input for the preparation of the curing agent resin. More preferably 30 to 40% by weight. If the amount of the blocked polyisocyanate is less than 20% by weight of the total amount of the raw materials for preparing the curing agent resin, uncured problems may occur. If the content of the polyisocyanate exceeds 75% by weight, the curing speed may be increased, but the rust resistance may be reduced.
- the amount of the curing agent resin contained in the cationic electrodeposition resin composition according to the present invention is preferably 20 to 70% by weight of the sum of the base resin and the curing agent resin, more preferably 25 to 50% by weight, even more preferably 30 to 40 wt%. If the amount of the curing agent resin is less than 20% by weight of the sum of the base resin and the curing agent resin, the curing temperature is increased and there is a problem of deterioration of rust resistance due to uncuring. The problem is that there is a shortage of components and the rust resistance is lowered.
- the cationic electrodeposition resin compositions of the present invention contain aromatic sulfonic acids together with common organic acids such as formic acid, acetic acid and lactic acid as neutralizing agents. It features.
- the aromatic sulfonic acid included in the cationic electrodeposition resin composition of the present invention may be obtained through the reaction of sulfuric acid with an aromatic compound component, but is not limited thereto, and may have, for example, the following structural formula.
- R may be an alkyl (1 to 4 carbon atoms) or a hydroxy group.
- the aromatic sulfonic acid contained in the cationic electrodeposition resin composition of the present invention is preferably xylene sulfonic acid of the following structural formula.
- sulfuric acid and an aromatic compound, such as xylene are added to the reactor, followed by a dehydration reaction at 110 to 140 ° C., followed by dehydration under reduced pressure to remove unreacted organic components and distilled water.
- An aromatic sulfonic acid is manufactured by the process of adding.
- the aromatic sulfonic acid thus prepared is used in the electrodeposition resin composition together with existing formic acid, lactic acid, acetic acid, methane sulfonic acid, etc. to increase the stability of the resin, and has an effect of inhibiting bacterial generation by bactericidal action.
- the amount of the aromatic sulfonic acid included in the cationic electrodeposition resin composition according to the present invention is preferably 0.1 to 5 parts by weight, more preferably 0.3 to 3 parts by weight, even more preferably based on 100 parts by weight of the total of the base resin and the curing agent resin. Is 0.5 to 2 parts by weight. If the content of aromatic sulfonic acid is less than 0.1 parts by weight based on 100 parts by weight of the base resin and the curing agent resin, the dispersion stability may be poor due to water dispersion stability. If the content is more than 5 parts by weight, the viscosity due to excessive neutralization is very high. There may be problems with redissolution.
- the cationic electrodeposition resin composition of the present invention is another technical feature that includes a rheology modifier having a urethane functional group together with the above components.
- the rheology modifier used in the present invention is a water-soluble urethane-modified epoxy amine resin containing a urethane functional group and having a gel particle form, and may be used for the purpose of improving corner corrosion resistance of general electrodeposition resins. This rheology modifier effectively controls the property of the polysulfide derivative and the high boiling point organic component in the resin composition during excessive curing, which tends to be excessively flexible and flowable, and easily flow from the edges.
- the rheology modifier having a urethane functional group used in the present invention has the ability to physically control flowability at the edges by the characteristics of the gel particles, and at the same time maintain the smoothness in the chemical plane by the flexible characteristics of the urethane functional group. Can work together.
- the urethane is reacted by reacting a polyepoxide-amine compound with an amine having a diisocyanate and a hydroxy group, followed by addition reaction of a polyamine such as diamine, and neutralizing with an organic acid, if necessary.
- Rheology modifiers with functional groups can be prepared.
- diisocyanate an aliphatic diisocyanate, specifically hexamethylene diisocyanate, isophorone diisocyanate, polymethylene polyphenylene diisocyanate or a mixture thereof is preferably used, more preferably polymethylene polyphenylene diisocyanate. Isocyanates are used.
- the amount of diisocyanate used in the production of the rheology control agent is preferably 1 to 10% by weight, more preferably 2 to 5% by weight, based on the total amount of the raw materials introduced for the production of the rheology control agent. If the amount of diisocyanate is less than 1% by weight of the total raw materials for the production of rheology modifiers, there may be a problem of deterioration of physical properties due to lack of urethane properties, and if it exceeds 10% by weight, problems of deterioration of adhesion may occur.
- polyepoxide-amine compound a reaction product of a polyepoxy resin, which is a polymerization product of polyol and polyepoxide, with an amine compound such as alkyl amine and hydroxy amine can be used.
- the amount of the polyepoxide-amine compound used in the production of the rheology modifier is preferably 5 to 20% by weight, more preferably 10 to 10%, of the total amount of raw materials added for the production of the rheology modifier. 15% by weight. If the amount of the polyepoxide-amine compound is less than 5% by weight of the total raw materials for the production of rheology modifiers, there may be a problem of water dispersion stability, and if the amount of the polyepoxide-amine compound exceeds 20% by weight, the problem of deterioration of workability due to high viscosity may occur. Can be.
- polyamine for example, an amine compound such as ethylenediamine can be used.
- the amount of the polyamine used in the production of the rheology regulator is preferably 0.1 to 5% by weight, more preferably 0.5 to 1% by weight of the total amount of the raw materials to be added for the production of the rheology regulator. If the amount of polyamine used is less than 0.1% by weight of the total raw materials for the production of rheology modifiers, the gel production rate may be low, which may cause a problem in that it does not play a sufficient role as a rheology modifier. There may be.
- the amount of the urethane functional group-containing rheology modifier included in the cationic electrodeposition resin composition according to the present invention is preferably 1 to 10 parts by weight, more preferably 2 to 8 parts by weight, based on 100 parts by weight of the sum of the base resin and the curing agent resin. Even more preferably 3 to 6 parts by weight. If the content of the urethane functional group-containing rheology modifier with respect to the total of 100 parts by weight of the base resin and the curing agent resin is less than 1 part by weight, there is a possibility that sufficient edge coverage may not be exhibited. Can be.
- a xylene sulfonic acid compound included in the electrodeposition resin composition of the present invention a xylene sulfonic acid compound was prepared by the following method according to the composition of [Table 1].
- the rheology modifier having a urethane functional group contained in the electrodeposition resin composition of the present invention was prepared according to the composition of [Table 2] by the following method.
- the modified polyol compound used in the preparation of the curing agent resin contained in the electrodeposition resin composition of the present invention was prepared by the following method according to the composition of [Table 3].
- the curing agent resin contained in the electrodeposition resin composition of the present invention was prepared by the following method according to the composition of [Table 4].
- the reaction was completed by diluting with (F) methoxy propanol while cooling the temperature of the reaction product to 80 ° C. or less by natural cooling. It was. The temperature of the reaction was controlled so that the temperature of the reaction did not exceed 85 ° C. The solids content in the resulting product was 85% by weight.
- Cationic electrodeposition resin composition of the present invention was prepared by the following method according to the composition of [Table 5].
- a cationic electrodeposition resin composition containing no xylene sulfonic acid was prepared by the following method according to the composition of [Table 6].
- a cationic electrodeposition resin composition containing no xylene sulfonic acid and a rheology modifier having a urethane functional group was prepared according to the composition of [Table 7] by the following method.
- a general curing agent used for cationic electrodeposition was prepared according to the composition of [Table 8] as follows.
- a cationic electrodeposition resin composition containing xylene sulfonic acid and a rheology modifier having a urethane functional group and including a general curing agent resin was prepared according to the composition of [Table 9] by the following method.
- aqueous dispersion electrodeposition resin composition prepared in Example 1 and Comparative Examples 1 to 3 and the pigment dispersion paste for cationic electrodeposition in general were mixed 4 to 1, stirred for 24 hours, and the thickness of 20 to 25 ⁇ m using a rectifier.
- Various coating film characteristic tests were done about the test piece which hardened after forming a coating film. The test results are shown in [Table 10].
- Example 10 The test results shown in [Table 10] show that when the water-dispersible electrodeposition resin composition according to the present invention is applied to the cationic electrodeposition paint, the coating film properties are remarkably improved compared to Comparative Example 3, which is a conventional technology level.
- Example 1 it was shown that xylene sulfonic acid is included to show excellent retention in heat storage and low temperature storage.
- the lower the Ra value as the measurement item indicating the smoothness of the coating film the better the smoothness of the coating film.
- Example 1 the Ra measurement value of Example 1 was much lower than that of Comparative Example 3, and thus, It can be seen that the smoothness of the coating film to which the electrodeposition resin composition according to the present invention is applied is relatively superior to the prior art. It is judged that the smoothness of a coating film was excellent by the flexibility of the polysulfide compound contained in the base resin in the electrodeposition resin composition of this invention.
- Example 1 shows an excellent result compared to Comparative Example 3 in the Impact (Empact) and Flexibility (Erichsen) items which are items indicating the flexibility of the excellent coating film as the higher.
- the rust resistance of the coating film was measured by the salt water spray resistance test method, and the lower the value, the better the rust resistance. As can be seen from the test results shown in Table 10, it was confirmed that Example 1 had better rust resistance than Comparative Example 3. .
- the bacterium inhibiting effect which is the xylene in the electrodeposition resin composition of the present invention This may be due to the inclusion of sulfonic acid. Therefore, by using the electrodeposition resin composition of the present invention, it is possible to prevent the occurrence of defects such as tee generation, contamination due to bacteria in the wash water of the line to which the actual electrodeposition coating is applied.
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Abstract
Description
Claims (10)
- (1) 폴리설파이드 화합물과 에폭시 화합물의 반응 생성물 및 아민 화합물과 에폭시 화합물의 반응 생성물을 함유하는 베이스 수지;(2) 페놀 화합물, 지방족 또는 방향족 아민 화합물 및 포르말린의 유사-만니히 반응 생성물로부터 유래된 변성 폴리올 화합물과 차단된 폴리이소시아네이트 화합물과의 반응 생성물을 함유하는 경화제 수지;(3) 방향족 술폰산; 및(4) 우레탄 관능기를 갖는 레올로지 조정제;를 포함하는 양이온 전착도료용 수지 조성물.
- 제1항에 있어서, 유사-만니히 반응 생성물로부터 유래된 변성 폴리올이 하기 화학식 13으로 표시되는 화합물인 것을 특징으로 하는 양이온 전착도료용 수지 조성물:[화학식 13]상기 식에서, R6은 각각 독립적으로 크레졸, 부틸페놀, 옥틸페놀, 노닐페놀 또는 페놀로부터 유래된, 치환 또는 비치환된 오르토-히드록시 페닐기를 나타내고, 각각의 R7은 독립적으로 부틸글리시딜에테르 또는 페닐글리시딜에테르로부터 유래된 잔기를 나타내며, R8은 모노에탄올아민, 디에탄올아민, 모노이소프로파놀아민, 디이소프로파놀아민, 모노에틸에탄올아민 또는 모노메틸에탄올아민으로부터 유래된 잔기를 나타낸다.
- 제1항에 있어서, 방향족 술폰산이 자일렌 술폰산인 것을 특징으로 하는 양이온 전착도료용 수지 조성물.
- 제1항에 있어서, 우레탄 관능기를 갖는 레올로지 조정제가, 폴리에폭사이드-아민 화합물과 디이소시아네이트 및 하이드록시기를 가진 아민을 반응시키고, 이어서 폴리아민을 부가반응시켜 얻어지는 것을 특징으로 하는 양이온 전착도료용 수지 조성물.
- 제7항에 있어서, 디이소시아네이트가 헥사메틸렌 디이소시아네이트, 이소포론 디이소시아네이트, 폴리메틸렌 폴리페닐렌 디이소시아네이트 또는 이들의 혼합물인 것을 특징으로 하는 양이온 전착도료용 수지 조성물.
- 제1항에 있어서, 베이스 수지와 경화제 수지의 합 100 중량부를 기준으로, 방향족 술폰산 0.1 내지 5 중량부 및 우레탄 관능기를 갖는 레올로지 조정제 1 내지 10 중량부를 포함하는 것을 특징으로 하는 양이온 전착도료용 수지 조성물.
- 제1항 내지 제9항 중 어느 한 항에 따른 양이온 전착도료용 수지 조성물 및 안료를 포함하는 양이온 전착도료.
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CN2009801412862A CN102186934B (zh) | 2008-09-30 | 2009-08-19 | 含芳族磺酸和氨基甲酸酯官能化流变改进剂的具有优异内渗透率的阳离子电沉积涂料用树脂组合物 |
TR2011/03855T TR201103855T1 (tr) | 2008-09-30 | 2009-08-19 | Aromatik sülfonik asit ve üretan fonksiyonel reoloji değiştiricisi içeren üstün iç geçirgenliğe sahip, katyon elektrikli kaplama boyasına yönelik reçine kompozisyonu. |
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KR10-2008-0096062 | 2008-09-30 | ||
KR1020080096062A KR101005297B1 (ko) | 2008-09-30 | 2008-09-30 | 방향족 술폰산 및 우레탄 관능성 레올로지 조정제를 포함하는, 내부침투성이 우수한 양이온 전착도료용 수지 조성물 |
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KR (1) | KR101005297B1 (ko) |
CN (1) | CN102186934B (ko) |
RU (1) | RU2467043C1 (ko) |
TR (1) | TR201103855T1 (ko) |
WO (1) | WO2010038943A2 (ko) |
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KR101029660B1 (ko) | 2011-01-25 | 2011-04-15 | (주)새론테크 | 작업성이 우수하고 견고한 폴리우레아 도료 조성물 및 그 시공방법 |
KR101863369B1 (ko) * | 2011-12-30 | 2018-06-01 | 주식회사 케이씨씨 | 폴리실라잔 변성 에폭시를 포함하는 케미컬 탱크용 도료 조성물 |
US9068089B2 (en) * | 2013-03-15 | 2015-06-30 | Ppg Industries Ohio, Inc. | Phenolic admix for electrodepositable coating composition containing a cyclic guanidine |
RU2662226C1 (ru) * | 2013-12-20 | 2018-07-25 | БАСФ Коатингс ГмбХ | Водные первичные дисперсии, способ их получения, а также их применение |
WO2015090441A1 (de) * | 2013-12-20 | 2015-06-25 | Basf Coatings Gmbh | Wässrige primärdispersionen, verfahren zu ihrer herstellung und ihre verwendung |
KR102341535B1 (ko) * | 2017-03-10 | 2021-12-22 | 주식회사 케이씨씨 | 양이온 전착수지 조성물 |
KR102042239B1 (ko) * | 2017-08-08 | 2019-11-08 | 주식회사 케이씨씨 | 양이온성 우레탄 경화제 및 이를 포함하는 전착 도료 조성물 |
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2009
- 2009-08-19 CN CN2009801412862A patent/CN102186934B/zh not_active Expired - Fee Related
- 2009-08-19 RU RU2011117554/05A patent/RU2467043C1/ru not_active IP Right Cessation
- 2009-08-19 TR TR2011/03855T patent/TR201103855T1/xx unknown
- 2009-08-19 WO PCT/KR2009/004615 patent/WO2010038943A2/ko active Application Filing
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RU2467043C1 (ru) | 2012-11-20 |
CN102186934B (zh) | 2013-09-11 |
WO2010038943A3 (ko) | 2010-07-01 |
TR201103855T1 (tr) | 2011-10-21 |
CN102186934A (zh) | 2011-09-14 |
KR20100036708A (ko) | 2010-04-08 |
KR101005297B1 (ko) | 2011-01-04 |
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