WO2005007723A1 - コーティング剤の改質剤 - Google Patents
コーティング剤の改質剤 Download PDFInfo
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- WO2005007723A1 WO2005007723A1 PCT/JP2004/009728 JP2004009728W WO2005007723A1 WO 2005007723 A1 WO2005007723 A1 WO 2005007723A1 JP 2004009728 W JP2004009728 W JP 2004009728W WO 2005007723 A1 WO2005007723 A1 WO 2005007723A1
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- acid
- polyol
- coating agent
- coating
- synthetic resin
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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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/34—Carboxylic acids; Esters thereof with monohydroxyl compounds
- C08G18/348—Hydroxycarboxylic acids
-
- 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
Definitions
- the present invention relates to a coating agent modifier, and more particularly, to a coating agent modifier and a coating agent composition exhibiting good adhesiveness to substrates such as plastics and metals. , Coating agents, coating methods, coating products and adhesive products.
- the modifier of the present invention is useful as a component for enhancing the adhesiveness of paints, coatings, adhesives, knuckles, fillers, sealing materials, and the like.
- plastic films such as polyethylene, polypropylene, nylon, and polyethylene terephthalate have been laminated together, a multilayer structure of these plastic films and a metal foil such as aluminum or a metal vapor-deposited film of plastic, and a coating layer formed on a metal substrate.
- a strong adhesive such as polyurethane resin, polyester resin, or epoxy resin is used.
- a two-part curable adhesive comprising a polyol having a carboxy group in the molecular chain via an ester bond and a polyisocyanate curing agent, a polyol and a specific dihydroxycarboxylic acid having a number average molecular weight of 200 to 5000 and Describes a two-component dry laminating adhesive that combines with an isocyanate curing agent and a composite laminate adhesive that includes a polyol, a polybasic anhydride such as pyromellitic anhydride, and a polyisocyanate curing agent.
- Patent Document 1 JP-A-3-281589
- Patent Document 2 JP-A-8-183943
- Patent Document 3 JP-A-61-47775
- the present invention has been made in view of the above circumstances, and has as its object to provide a urethane-based material that can be easily blended and used in a wide range of applications and imparts high adhesiveness to various substrates.
- Coating agent modifier, One-pack, Two-pack, Three-pack coatings, Two-pack Coating compositions, coating methods and products have been made in view of the above circumstances, and has as its object to provide a urethane-based material that can be easily blended and used in a wide range of applications and imparts high adhesiveness to various substrates.
- Another object of the present invention is to provide a reactive composition which can be easily blended and used in a wide range of applications, and can impart high adhesion to various substrates.
- the present invention provides a coating agent, an adhesive, a sealant, and a filler using the conductive composition.
- the present invention comprises a group of a plurality of related inventions, and the gist of each invention is as follows.
- the gist of the first invention resides in a modifier of a urethane-based coating agent containing dimethylolalkanoic acid as an active ingredient.
- the gist of the second invention is to provide a synthetic resin and / or a polyol which may have active hydrogen.
- a one-part coating agent comprising a block-type polyisocyanate curing agent and dimethylolalkanoic acid.
- the gist of the third invention is that a liquid A composed of a synthetic resin which may have active hydrogen and / or a polyol and dimethylolalkanoic acid and a liquid B of a polyisocyanate curing agent are used. Consists of a two-part coating agent.
- the gist of the fourth invention is a two-pack coating agent comprising a B2 solution having an isocyanate group-terminated prepolymer obtained by reacting an organic polyisocyanate and a polyol, and a C solution of dimethylolalkanoic acid.
- the gist of the fifth invention is that a synthetic resin which may have active hydrogen and a liquid A1 of Z or polyol, a liquid B of a polyisocyanate curing agent, and a liquid C of dimethylolalkanoic acid are used. From Consists of three-part coating agents.
- the gist of the sixth invention resides in a synthetic resin which may have active hydrogen and a composition for a two-pack coating agent comprising Z or polyol and dimethylolalkanoic acid.
- a gist of a seventh invention resides in a coating method for applying a coating agent according to any one of the above-described second to fifth inventions to a substrate.
- the gist of an eighth invention resides in a coated product obtained by applying the coating agent according to any one of the second to fifth inventions to a base material.
- a ninth aspect of the invention resides in an adhesive product in which the coating agent according to any one of the second to fifth aspects is applied to a substrate and adhered to another substrate.
- the gist of the tenth invention is that a synthetic resin and / or a polyol which may have active hydrogen, a polyisocyanate curing agent which may be blocked and dimethylolalkanoic acid are compounded. It depends on the resulting reactive composition.
- the gist of the eleventh invention resides in a coating agent comprising the reactive composition according to the gist of the tenth invention.
- the gist of the twelfth invention lies in an adhesive comprising the reactive composition according to the gist of the tenth invention.
- the gist of the thirteenth invention resides in a sealant comprising the reactive composition according to the gist of the tenth invention.
- the gist of the fourteenth invention resides in a filler comprising the reactive composition according to the gist of the tenth invention.
- Dimethylolalkanoic acid as a modifier for a urethane-based coating agent is easy to mix and can be used in a wide range of applications.
- coating agents using dimethylolalkanoic acid can be used in a wide range of applications, Shows high adhesion.
- the present invention relates to a urethane-based coating agent modifier comprising dimethylolalkanoic acid as an active ingredient, and includes the one-pack, two-pack, three-pack coatings, and two-pack coatings of the present invention. Utilized through pharmaceutical compositions. Accordingly, these inventions will be described.
- the urethane-based coating agent includes all other coating agents that utilize the reaction between active hydrogen and polyisocyanate. Further, the above-mentioned coating agent is not limited to the coating agent, and may be a concept including, for example, an adhesive, a paint, a printing ink, and the like as long as a coating operation is included.
- dimethylolalkanoic acid an active hydrogen
- a synthetic resin and / or a polyol a blocked resin
- a good polyisocyanate hardener An organic solvent is used as an optional component in the coating agent.
- dimethylolalkanoic acid examples include dimethylolpropionic acid (molecular weight 134), dimethylolbutanoic acid (molecular weight 148), dimethylolheptanoic acid (molecular weight 190), and dimethylolnonanoic acid (molecular weight 218). And the like.
- dimethylolbutanoic acid is preferred.
- the method for producing dimethylolalkanoic acid is not particularly limited, and is produced, for example, by subjecting an aldehyde to aldol condensation and oxidation reaction.
- dimethylolalkanoic acid itself is a known compound, and the use of dimethylolalkanoic acid as a chain extender in the production of a linear polyurethane is also known (Japanese Patent Publication No. As described in the present invention, the dimethylol alkanoic acid is present in a free state without being bound, thereby exerting a modifying effect of imparting high adhesiveness to the urethane-based coating agent. That is a surprising fact.
- the synthetic resin having the above active hydrogen may be a synthetic resin having an active hydrogen atom in a molecule, such as a polyurethane resin, a polyester resin, an epoxy resin, or an acrylic resin, and a salt.
- a synthetic resin having an active hydrogen atom in a molecule such as a polyurethane resin, a polyester resin, an epoxy resin, or an acrylic resin, and a salt.
- active resins having an active hydrogen atom in the molecule such as vinyl resin and synthetic resins.
- polyurethane resins are preferred.
- the number average molecular weight of the synthetic resin is usually from 100 to 2,000,000, preferably from 500 to 1,000,000.
- the number average molecular weight is less than 100, physical properties such as strength of a cured coating film having poor film forming properties are insufficient. If the number average molecular weight exceeds 2,000,000, the compatibility with dimethylolalkanoic acid and polyisocyanate curing agent will deteriorate due to the decrease in the solubility of the synthetic resin in organic solvents, resulting in good adhesion. Is difficult to obtain.
- the synthetic resin can be used in any form such as a solid, a solventless liquid, a solution, a dispersion, a sol, and a powder.
- the preferred form is a liquid, such as a solution, a dispersion, or a sol, because it needs to be in a liquid state during the reaction of forming a coating film.
- the medium of the resin may be an organic solvent or water, but is preferably an organic solvent.
- the solid content of the synthetic resin is usually 10-100% by weight, preferably 20-90% by weight, more preferably 20-80% by weight.
- the synthetic resin a resin obtained by reacting or polymerizing raw materials in an organic solvent is used.
- a resin that has undergone a Balta reaction or polymerization, or a solid resin obtained by emulsion polymerization, suspension polymerization, or the like in water is used without a solvent or dissolved in an organic solvent.
- organic solvent examples include ketone solvents such as acetone, methyl ethyl ketone, methyl isobutyl ketone, and cyclohexanone; aromatic solvents such as toluene and xylene; and ester solvents such as ethyl acetate and butyl acetate.
- Solvents include alcoholic solvents such as ethanol, isopropyl alcohol, and diacetone alcohol, cellosolves, N-methyl-2-pyrrolidone, dimethylformamide, dimethylacetamide, dimethylsulfoxide, tetrahydrofuran, and methylene dichloride. These complex lj may be used alone or in combination of two or more.
- phthalic acid ester trimellitic acid ester, adipic acid
- a plasticizer such as an aliphatic dibasic acid ester such as an ester, a citric acid ester, a maleic acid polyester, a phosphoric acid ester, an epoxy ester or a paraffin ester is possible.
- the polyurethane resin may be in any form such as a foam, a casting elastomer, a sealing material, and a solution-type resin. Among them, a solvent-type polyurethane resin dissolved in an organic solvent is preferable.
- the solvent-type polyurethane resin is produced from an organic polyisocyanate, a polyol, a chain extender, if necessary, and a molecular weight or viscosity modifier.
- organic polyisocyanate examples include 2,4-tolylene diisocyanate, a mixture of 2,4-tolylene diisocyanate and 2,6-tolylene diisocyanate (TDI), 4 Diphenylmethane diisocyanate (MDI), crude MDI containing polynuclear (crude MDI), 1, 5_
- XDI XDI
- hydrogenated TDI hydrogenated TDI
- trifunctional isocyanates such as triphenylmethane triisocyanate. These may be used alone or in combination of two or more.
- the polyol is a compound having two or more hydroxyl groups in one molecule and having a number average molecular weight of 200 to 10,000, such as polyether polyol, polyester polyol, and polycarbonate polyol. , Acrylic polyol, polybutadiene polyol, hydrogenated polybutadiene polyol, and the like.
- examples of the polyether polyol include polyethylene glycol, polypropylene glycol, poly (ethylene / propylene) glycol, polytetramethylene ether glycol, and the like.
- polyester polyol examples include a compound obtained by polycondensation of a low molecular weight diol or a low molecular weight triol or the like with a dibasic acid, and a low molecular weight diol or a polyhydric alcohol as an initiator, poly- ⁇ -force prolatatatone, Compounds obtained by a ring-opening reaction such as polymethyl-valerolatatone are exemplified.
- the above low molecular weight diol include ethylene glycol, diethylene glycol, propylene glycol, 1,4-butanediol.
- triols such as trimethylolpropane and glycerin, and trimethylolpropane and glycerin.
- the basic acid include adipic acid, azelaic acid, sebacic acid, isophthalic acid and terephthalic acid.
- Examples of the polycarbonate polyol include 1,6-hexanediol polycarbonate polyol, 3-methynole-1,5-pentanediol-based polycarbonate polyol, and a mixed diol-based polycarbonate polyol having 416 carbon atoms.
- Examples of the polybutadiene polyol include 1,4-polybutadiene and 1,2-polybutadiene.
- Examples of the hydrogenated polybutadiene polyol include compounds obtained by hydrogenating polybutadiene polyol and having a paraffin skeleton.
- Examples of the above chain extender include ethylene glycol, propylene glycol, dipropylene glycol, 1,4-butanediol, 1,3-butanediol, neopentyl glycol, 3-methylpentanediol, and 1,6- Short-chain diols such as xandiol, hydrazine, ethylenediamine, propylenediamine, hexamethylenediamine, phenylenediamine, xylylenediamine, isophoronediamine, diamines such as piperazine, trimethylolpropane, Triols such as glycerin, water and the like can be mentioned. These may be used alone or in combination of two or more.
- Examples of the molecular weight or viscosity modifier include monoalcohols, monoamines, and alkanolamines.
- the ratio of the NC ⁇ group of the organic polyisocyanate to the OH group of the polyol is usually 1.1: 1 to 15: 1 in equivalent ratio, and the NCO group and the polyol and the chain extender
- the total ratio of the ⁇ H groups is usually 1: 1 to 1: 1.5 in equivalent ratio
- an organic tin compound such as dibutyltin dilaurate, dibutyltin diotatoate, stannasoctoate or an organic tin compound such as triethylamine or triethylamine in an organic solvent.
- the reaction is performed at a temperature of 20 to 120 ° C in the presence or absence of a catalyst such as a tertiary amine compound such as ethylenediamine.
- a catalyst such as a tertiary amine compound such as ethylenediamine.
- the average molecular weight of the solvent type polyurethane resin thus obtained is usually 5,000 to 500,000, and the solid content of the obtained polyurethane resin solution is usually 15 to 60% by weight.
- the polyol that can be used in the same manner as the synthetic resin which may have active hydrogen used in the present invention is the same as the polyol used as a raw material of the polyurethane resin. Compounds can be used.
- Examples of the above-mentioned blocked polyisocyanate curing agent include a terminal isocyanate group adduct of the above-mentioned organic polyisocyanate and a short-chain diol or triol, and a dimer or trimer of an organic polyisocyanate.
- a non-solvent type such as a monomer, a burette of an organic polyisocyanate, or a compound in which the terminal isocyanate group is blocked by an oxime compound or a phenol compound, or an organic solvent solution or a plasticizer solution.
- the one-pack type coating agent of the present invention comprises a synthetic resin which may have active hydrogen and / or a polyol, a block type polyisocyanate curing agent, and dimethylolalkanoic acid without a solvent or an organic solvent. Dissolved in The one-pack type coating agent is used after being heated to a predetermined temperature, for example, usually 80 to 200 ° C.
- the two-part coating agent of the present invention comprises a liquid A and a poly (A) obtained by dissolving a synthetic resin and / or polyol optionally having active hydrogen and dimethylolalkanoic acid in a solvent-free or organic solvent.
- Coating agent consisting of Solution B containing no isocyanate curing agent or dissolved in an organic solvent, and a solution obtained by reacting an organic polyisocyanate with a polyol.
- the two-component coating agent is used at a temperature equal to or higher than room temperature by mixing solution A and solution B or solution B1 and solution C.
- the solution A corresponds to the composition for a two-pack type coating agent of the present invention.
- the ratio of the NC group in the organic polyisocyanate to the H group in the polyol is usually 1.1: 1 to 15: 1 in an equivalent ratio, and the ratio is preferably set in the presence of an organic solvent. Is carried out in the absence, in the presence or absence of the catalyst, at a temperature of 20-120 ° C.
- the average molecular weight of the isocyanate group-terminated prepolymers thus obtained is usually from 200 to 100,000, and the solid content is usually from 15 to 100% by weight.
- the three-part coating agent of the present invention is a liquid A1 prepared by dissolving a synthetic resin optionally having active hydrogen and Z or a polyol in a solvent-free or organic solvent.
- Solution B consisting of a curing agent without solvent or dissolved in an organic solvent
- Solution C consisting of dimethylolalkanoic acid without a solvent or dissolved in an organic solvent.
- the three-part coating agent is used by mixing the A1, B, and C liquids at a temperature equal to or higher than room temperature.
- the mixing ratio of dimethylolalkanoic acid in the above-mentioned one-pack, two-pack or three-pack coating agent is usually 0.1 to 20 weight based on the solid content of the synthetic resin and / or polyol. %, Preferably 0.5-10% by weight.
- the amount of dimethylolalkanoic acid is less than 0.1% by weight, the effect of imparting adhesiveness is insufficient, and when it exceeds 20% by weight, the solubility in organic solvents and the solubility with synthetic resins and / or polyols are reduced. Poor compatibility.
- the carboxyl group of dimethylolalkanoic acid can be neutralized with the tertiary amine or the like.
- a solution prepared by dissolving in advance the above-mentioned organic solvent or the short-chain diol used for the chain extender at room temperature to 120 ° C. may be used.
- the mixing ratio of the polyisocyanate hardener is such that the active hydrogen groups contained in the synthetic resin and / or the polyol are used as the hydroxyl groups, and the total amount of the hydroxyl groups contained in the synthetic resin and / or the polyol and dimethylolalkanoic acid is used.
- the coating agent of the present invention may contain additives such as various pigments, colorants, antioxidants, light stabilizers, and curing accelerators, if necessary.
- the base material to which each of the above coating agents is applied includes polyolefins such as polyethylene and polypropylene and their surface-treated products, polyesters and their surface-treated products, polystyrene, vinyl chloride, nylon, ABS, polycarbonate, PP And plastics such as acrylic resins, blends or modified products thereof, and metallized plastics.
- polyolefins such as polyethylene and polypropylene and their surface-treated products
- polyesters and their surface-treated products such as polystyrene, vinyl chloride, nylon, ABS, polycarbonate, PP And plastics such as acrylic resins, blends or modified products thereof, and metallized plastics.
- steel and its surface-treated products metals such as copper and aluminum, alloys such as magnesium alloys, titanium alloys and aluminum alloys, pre-coated metals, electrodeposited plates, glass, ceramics, mortar, concrete, paper, wood, etc. No.
- the coating method various conventionally known methods can be appropriately employed. For example, brush coating, roll coating, blades, bar coating, flow coating, spray coating, dipping, and the like can be mentioned.
- the drying of the substrate coated with the coating agent The conditions vary depending on the resin solid content and the type of solvent, but it is preferable to carry out the drying treatment at a temperature of 20 to 150 ° C. for 5 seconds to 48 hours.
- the application amount is usually 0.5 to 200 g / m 2 as a resin solid content.
- the reactive composition of the present invention comprises the above-mentioned synthetic resin optionally having active hydrogen and Z or polyol, a blocked resin, a polyisocyanate curing agent and a dimethylol alkane. It is obtained by mixing an acid.
- the mixing ratio of dimethylolalkanoic acid in the reactive composition of the present invention is usually 0.1% with respect to the solid content of the synthetic resin and / or polyol in the same manner as in the above-mentioned coating agent. It is 1-20% by weight, preferably 0.5-10% by weight.
- the compounding ratio of the polyisocyanate curing agent is the same as the compounding ratio in the coating agent described above, wherein the active hydrogen groups contained in the synthetic resin and / or the polyol are used as hydroxyl groups, and the synthetic resin and / or the polyol and dimethylolalkanoic acid are used.
- NC ⁇ / ⁇ H 0.5 / 1-20 / 1, preferably 1 / 1-1 10/1, as an equivalent ratio per solid content with respect to the total hydroxyl group content of the compound.
- the above reactive composition comprises a reactive resin (A) obtained by blending a synthetic resin having no active hydrogen, a blocked polyisocyanate curing agent and dimethylolalkanoic acid, A reactive resin ( ⁇ ') obtained by blending a synthetic resin having no hydrogen, an unblocked polyisocyanate curing agent and dimethylolalkanoic acid, and a synthetic resin having an active hydrogen And a reactive composition obtained by blending a polyisocyanate curing agent and a dimethylolalkanoic acid with a ⁇ or polyol, a blocked polyisocyanate, and a synthetic resin having active hydrogen and a ⁇ or polyol, or a block. And a reactive composition ( ⁇ ') obtained by blending a polyisocyanate curing agent and dimethylolalkanoic acid which have not been prepared.
- the blocking agent that blocks the polyisocyanate curing agent is dissociated by heating, and the regenerated NC ⁇ group of the polyisocyanate curing agent and the OH group of dimethylol alkanoic acid Is started, and after the reaction, a composition of two or more resins is obtained.
- the heating temperature for starting the reaction is usually 80-200 ° C, preferably 100-180 ° C.
- the reaction between the polyisocyanate curing agent and dimethyl alcohol alkanoic acid is gradually started from the time of compounding, so that an appropriate low temperature is set so as to obtain an appropriate pot life. Saved in. After the reaction, a composition of two or more resins is obtained.
- the polyisocyanate curing agent is blocked by heating to release the blocking agent, and the regenerated NC ⁇ groups of the polyisocyanate curing agent and dimethylol
- the reaction with OH group of lucanoic acid starts, and after the reaction, it becomes a polyurethane polymer.
- the heating temperature for starting the reaction is usually 80-200 ° C, preferably 100-180 ° C.
- the reaction between the polyisocyanate curing agent and dimethyl alcohol alkanoic acid is gradually started from the time of compounding, so that an appropriate pot life can be obtained.
- Each of the above-mentioned reactive compositions makes use of their reactivity, and is particularly suitably used as a coating agent, an adhesive, a sealant, or a filler.
- the coating agent and the reactive composition of the present invention become a thermosetting resin having a three-dimensional crosslinked structure. Therefore, the resulting cured coating film is excellent in heat resistance, solvent resistance, durability and the like.
- curing agent 1 "Mitec (trade name) GP105A” (manufactured by Mitsubishi Chemical Corporation) (TDI / trimethylol propane duct polyisocyanate curing agent, solid content 75% by weight, solvent: ethyl acetate) (abbreviated as curing agent 1)
- curing agent 1 TDI / trimethylol propane duct polyisocyanate curing agent, solid content 75% by weight, solvent: ethyl acetate)
- Solution A was prepared in the same manner as in Example 1 except that the composition was changed as shown in Tables 2 to 6 in Example 1, and solution A was prepared by adding 2% DMBA to the resin solid content.
- Solution B was added to solution A, mixed uniformly, applied to a substrate cut into 70 mm x 150 mm using a doctor blade of 100 ⁇ m, dried and cured at 80 ° C for 24 hours. Then, after standing for 24 hours in an environment of 23 ° C and 60% RH, the adhesion is described in Table 2 below in accordance with JISK5400 by lmm grid test (Serotape (registered trademark) peeling) in the same environment. The rating was given.
- unstretched polypropylene (CPP) plate with a thickness of lmm subjected to corona discharge treatment polyethylene terephthalate (PET) finolem with a thickness of 200 ⁇
- untreated nylon plate with a thickness of lmm thickness of 0.8 mm
- An untreated aluminum plate and a 0.8 mm thick zinc phosphate treated steel plate were used. The results are shown in Table 3-6.
- the width of peeling of the cut is wide, and the peeling area is more than 15% and less than 35% of the total square area.
- the width of peeling of the cut area is wider than the score 4.
- the peeling area is more than 35% and less than 65% of the total square area.
- Mitsubishi Chemical Corporation Mitsubishi Chemical Corporation
- Solution A contained 2% by weight or 4% by weight of DMBA based on the resin solid content of DMBA.
- Example 7-10 as shown in Tables 8-10, no DMBA was added and the same molar number of 1,4-butanediol (1,4-BD, no carboxyl group) was used in place of DMBA. Except for the above, a two-part coating agent was produced in the same manner as in Examples 7-10.
- PET film (thickness 0.1mm), nylon 6 film (thickness 0.3mm), nylon 66 film (thickness 0.3mm), untreated aluminum plate (thickness 0.1mm) ) was used in the following manner.
- unstretched polypropylene board CPP, thickness lmm
- polycarbonate board thickness 1mm
- acrylic board PMMA, thickness 2mm
- ABS board thickness lmm
- Solution B was added to Solution A and mixed uniformly, and then applied to a 70 mm x 150 mm substrate (mortar plate only 70 mm x 70 mm) using a 200 ⁇ m doctor blade. After drying for an hour, a nylon non-woven fabric (Niace P0703WTO, 0.38 mm thick, manufactured by Unitika) was bonded and cured for 24 hours. Then, after leaving for 24 hours in an environment of 23 ° C and 60% RH, the nonwoven fabric is cut into a width of 25 mm, and peeled in the same manner as the peel test using the above flexible substrate. The separation strength was measured.
- a nylon non-woven fabric Niace P0703WTO, 0.38 mm thick, manufactured by Unitika
- Comparative Example 7 Comparative Example 8 Compounding ratio Liquid A Polyol 3 100.0 69.1
- Hardener 2 41.2 41.2 Peel strength Base material P E T film 0.5 1.0
- Exenol 2020 (produced by Asahi Glass Urethane Co., Ltd., polypropylene, No., average molecular weight: 2000) 703.9 weight in a 2 liter separable flask with a condenser. , Average molecular weight 3000) 300.0 parts by weight, tolylene diisocyanate (manufactured by Nippon Polyurethane Industry Co., Ltd., T-80) 176.1 parts by weight, 0.112 parts by weight of dibutyltindiotato, and dry nitrogen The reaction was carried out at 90 ° C for 5 hours while flowing, and the isocyanate group content was 3.4% by weight and the viscosity was 11000mPa's / 25 ° C. A succinate-terminated prepolymer (abbreviated as prepolymer 1) was obtained.
- tolylene diisocyanate manufactured by Nippon Polyurethane Industry Co., Ltd., T-80
- a solution prepared by dissolving 2 parts by weight of DMBA in 4.7 parts by weight of tetrahydrofuran with respect to 100 parts by weight of prepolymer 1 was uniformly mixed with kamen ⁇ , and applied to a mortar plate so as to have a thickness of 200 ⁇ m.
- Nylon non-woven fabric is stuck on it, 20 ° C, 50. /.
- Moisture cured for 4 days in an RH environment. Make a 25 mm width cut in the nylon non-woven fabric, as in Examples 7-10 above.
- the peel strength was as good as 4.7 kgZ25 mm.
- Example 1-1 1 in which DMBA was added had improved adhesiveness to various base materials as compared with Comparative Example 1-1 13 in which DMBA was not added.
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JPH0827242A (ja) * | 1994-07-20 | 1996-01-30 | Mitsubishi Chem Corp | 水性ポリウレタン樹脂及びその製造方法 |
JPH11228654A (ja) * | 1998-02-18 | 1999-08-24 | Nippon Polyurethane Ind Co Ltd | 水性塗料用ポリウレタン系エマルジョン及びそれを用いた水性塗料 |
JPH11323300A (ja) * | 1998-05-13 | 1999-11-26 | Nippon Polyurethane Ind Co Ltd | 水性接着剤用ポリウレタン系エマルジョン及びそれを用いた水性接着剤 |
JP2001040059A (ja) * | 1999-05-24 | 2001-02-13 | Toyo Ink Mfg Co Ltd | ポリウレタンの製造方法、及び該製造方法によって得られるポリウレタンの利用 |
JP2001172600A (ja) * | 1999-12-22 | 2001-06-26 | Sanyo Chem Ind Ltd | 二液型ドライラミネート用接着剤 |
JP2002284836A (ja) * | 2001-03-23 | 2002-10-03 | Nippon Kasei Chem Co Ltd | ポリウレタン樹脂の製造法 |
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