WO2008041723A1 - Composition de résine polyimide thermodurcissable en deux parties et produit durci à base de ladite composition - Google Patents
Composition de résine polyimide thermodurcissable en deux parties et produit durci à base de ladite composition Download PDFInfo
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- WO2008041723A1 WO2008041723A1 PCT/JP2007/069373 JP2007069373W WO2008041723A1 WO 2008041723 A1 WO2008041723 A1 WO 2008041723A1 JP 2007069373 W JP2007069373 W JP 2007069373W WO 2008041723 A1 WO2008041723 A1 WO 2008041723A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08L79/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- 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
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1046—Polyimides containing oxygen in the form of ether bonds in the main chain
-
- 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
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1046—Polyimides containing oxygen in the form of ether bonds in the main chain
- C08G73/105—Polyimides containing oxygen in the form of ether bonds in the main chain with oxygen only in the diamino moiety
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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
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1075—Partially aromatic polyimides
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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
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1075—Partially aromatic polyimides
- C08G73/1082—Partially aromatic polyimides wholly aromatic in the tetracarboxylic moiety
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
- C08K5/3415—Five-membered rings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
Definitions
- thermosetting polyimide resin composition Two-component thermosetting polyimide resin composition and cured product thereof
- the present invention relates to a two-component polyimide resin composition having high heat resistance and thermosetting properties, and a cured product thereof.
- fluorine-based adhesives and silicone-based adhesives are well known as heat-resistant adhesives at 200 ° C. or higher.
- Fluorine-based pressure-sensitive adhesives have the highest heat resistance but have the problem of being very expensive.
- Silicone adhesives are inexpensive and have excellent heat resistance, so they are used in a wide range of fields.However, when exposed to high temperatures of around 250 ° C for a long time, siloxane gas is generated, resulting in poor insulation. Have problems that cause.
- Conventional silicone pressure-sensitive adhesives include a peroxide curable type and an addition reaction curable type.
- Peroxide-curing silicone adhesives use organic peroxides such as benzoyl peroxide as the curing agent, and require a high temperature of 150 ° C or higher to cure.
- an addition reaction curable silicone pressure sensitive adhesive is a pressure sensitive adhesive that crosslinks by adding a SiH group and an alkenyl group using a platinum catalyst (see, for example, Patent Document 1). Therefore, it is suitable for coating on substrates with poor heat resistance.
- this adhesive the addition reaction gradually progresses even in the treatment solution before being applied to the substrate, and the SiH groups of the crosslinking agent are consumed and reduced.
- There are problems such as increase in viscosity and gelation of the treatment liquid, and the curability of the adhesive may decrease or may not be cured. It is cheaper than fluorine-based adhesives and does not deteriorate even at a high temperature of 250 ° C! / Heat-resistant adhesives are demanded in the market! !/,is the current situation.
- polyimide resins have been widely used as engineering plastics with excellent heat resistance.
- bismaleimide compounds and aromatic diamines are used as raw materials, and polyimide resins obtained by reacting these are thermosetting polyimide resins. Widely used in electrical insulation materials, etc. It is used.
- thermosetting polyimide resins made from polyoxyalkylene bismaleimide, aromatic bismaleimide, and aromatic diamine, which are aliphatic bismaleimides, are known to have adhesiveness as well as heat resistance. (For example, see Patent Document 2).
- Patent Document 1 Japanese Patent Publication No. 54-37907
- Patent Document 2 US Patent No. 4116937 Specification
- the present invention has been made in view of the above circumstances. It is cured at a temperature of 150 ° C or lower and has a flexibility that generates less decomposition gas even when heated to 250 ° C. It is an object of the present invention to provide a highly heat-resistant thermosetting polyimide resin composition that provides a cured product.
- thermosetting property of the polyimide resin composition is cured at a temperature of 150 ° C or less, the cured product has flexibility, and it has only heat resistance such as generation of decomposition gas even when heated to 250 ° C. It has been found that it has a good tackiness, and the present invention has been completed.
- the present invention provides:
- the acid component and the polyoxyalkylene diamine represented by the formula (3) are blended so that the number of moles of the polyoxyalkylene diamine is excessive with respect to the number of moles of the tetracarboxylic acid component, and heated to react.
- thermosetting polyimide resin composition comprising a liquid solution containing the polyimide (a) obtained in the above, and a B liquid composed of a bismaleimide compound represented by the formula (4) and a solvent, [0008] (Mouth) A thermosetting polyimide resin composition obtained by mixing liquid A and liquid B of the two-component thermosetting polyimide resin composition described in (i) above,
- thermosetting polyimide resin composition described in the above (mouth) at 50 ° C to; 150 ° C for 0.5 to 10 hours;
- Tetracarboxylic acid component comprising at least one compound selected from tetracarboxylic dianhydride represented by formula (1) and tetracarboxylic acid represented by formula (2) and a tetracarboxylic acid derivative
- a polyoxyalkylene diamine represented by the formula (3) are blended so that the number of moles of the polyoxyalkylene diamine is excessive with respect to the number of moles of the tetracarboxylic acid component.
- R is a tetravalent organic group
- Y to Y are independently hydrogen or a hydrocarbon group having 1 to 8 carbon atoms.
- thermosetting polyimide resin composition of the present invention is a two-part type, and after the two parts are mixed, a cured product is obtained by reacting at a temperature of 150 ° C or lower.
- the cured product is flexible and has the characteristics that it has only adhesiveness that is not only heat resistant, such as low generation of decomposition gas even when heated to 250 ° C!
- Polyimide (a) can be synthesized as a liquid substance in the absence of a solvent, and can be obtained as a liquid polyimide. There have been no reports on liquid polyimides.
- Polyimide (a) also has good affinity with low boiling point solvents such as tetrahydrofuran and acetone, and can be diluted with them. Therefore, it is possible to obtain a high-concentration, optionally solventless, thermosetting polyimide resin composition using a low-boiling solvent, streamlining the work process by shortening the drying time when obtaining a cured product, and at the time of drying It also has well-balanced characteristics that are excellent in terms of safety and health due to the reduction of the amount of solvent discharged.
- a tetracarboxylic dianhydride as a tetracarboxylic acid.
- the tetracarboxylic acid and the tetracarboxylic acid are used.
- Use derivatives such as esters with alcohol And a practical polyimide can be manufactured. Since tetracarboxylic acid can be used as it is, it is advantageous in terms of production equipment and cost.
- thermosetting polyimide resin composition and the cured product thereof according to the present invention are shown in the above (i) and (c), and these are the following steps (1) to (4). ).
- Step (1) A step in which a tetracarboxylic acid component and a polyoxyalkylene diamine are heated to react to synthesize polyimide (a), and if necessary, a liquid A mixed with a solvent is produced.
- Step (2) Step of obtaining B liquid by dissolving bismaleimide compound in solvent
- Step (3) A liquid and B liquid are mixed to produce a thermosetting polyimide resin composition
- Examples of the tetracarboxylic dianhydride of the formula (1) used when obtaining the liquid A in the step (1) in the present invention include aliphatic tetracarboxylic dianhydrides and aromatic tetracarboxylic dianhydrides.
- R is a tetravalent organic group. As a tetravalent organic group
- tetravalent groups derived from cyclohexane force and tetravalent groups derived from benzene are also selected. One or more are preferred.
- examples of the aliphatic tetracarboxylic dianhydrides include 1, 2, 4, 5 cyclohexane tetracarboxylic dianhydride, 1, 2 , 3, 4 Butanetetracarboxylic dianhydride, 1, 2, 3, 4 Cyclobutanetetracarboxylic dianhydride, 1, 2, 3, 4 Cyclopentanetetracarboxylic dianhydride, Bicyclo [2. 2. 2] Otato 7-2, 3, 5, 6 Tetracarboxylic dianhydride, dicyclohexyltetracarboxylic dianhydride and the like.
- examples of the aromatic tetracarboxylic dianhydride include pyromellitic dianhydride, 3, 3 ′, 4, 4′— Biphenyltetracarboxylic dianhydride, 2, 3, 3 ', 4'-biphenyltetracarboxylic dianhydride, 2, 2bis (3,4 -Dicarboxyphenyl) propane dianhydride, 2,2 bis (2,3 dicarboxyphenyl) propane dianhydride, 2,2-bis (3,4-dicarboxyphenyl) 1, 1, 1 , 3, 3, 3 Hexafluoropropane dianhydride, 2, 2 bis (2, 3 dicarboxyphenyl) 1, 1, 1, 1, 3, 3, 3-hexafluoropropane dianhydride Bis (3,4-dicarboxyphenone) sulfone dianhydride, bis (3,4-dicarboxyphenyl) ether dianhydride,
- Examples of the tetracarboxylic acid of the formula (2) and derivatives thereof include aliphatic tetracarboxylic acid and derivatives thereof, aromatic tetracarboxylic acid and derivatives thereof, and in the formula (2), R is As in formula (1), Y to Y are each independently hydrogen or carbon having 1 to 8 carbon atoms.
- hydrocarbon group having 1 to 8 carbon atoms examples include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, a t-butyl group, a hexyl group, a cyclohexyl group, and a phenyl group. It is not limited to these.
- aliphatic tetracarboxylic acids and their derivatives include, for example, 1, 2, 4, 5 cyclohexanetetracarboxylic acid, 1, 2, 3, 4 , Tantetra force norebonic acid, 1, 2, 3, 4 cyclofu, tantetra force norevonic acid, 1, 2, 3, 4-cyclopentanetetracarboxylic acid, bicyclo [2.2.2] otato 7 3, 5, 6-tetracarboxylic acid, dicyclohexyltetracarboxylic acid and the like, and esters thereof with alcohols having 1 to 8 carbon atoms.
- aromatic tetracarboxylic acids and derivatives thereof include, for example, pyromellitic acid, 3, 3 ′, 4, 4′-biphenyltetracarboxylic acid, 2, 3, 3,, 4, monobiphenyltetracarboxylic acid, 2, 2 bis (3,4 dicarboxyphenol) propane, 2, 2 bis (2, 3 dicarboxyphenol) propane, 2, 2 Screws (3, 4 -Dicarboxyphenyl) 1, 1, 1, 1, 1, 3, 3, 3 Hexafluoropropane, 2, 2 bis (2,3-dicarboxyphenyl) 1, 1, 1, 1, 1, 3, 3, 3— Hexafluoropropane, bis (3,4-dicarboxyphenyl) sulfone, bis (3,4-dicarboxyphenyl) ether, bis (2,3 dicarboxyphenyl) ether, 3, 3 ', 4, 4' —Benzophenone tetracarbox
- tetracarboxylic dianhydrides tetracarboxylic acids, and derivatives of the tetracarboxylic acids
- Those having a structure derived from cyclohexane or having a structure derived from benzene are preferred, more preferably those having a structure derived from cyclohexane force are particularly preferred.
- 1,2,4,5-cyclohexanetetracarboxylic dianhydride 1,2,4,5 cyclohexanetetracarboxylic acid, or alcohol esters thereof. Or it can be used in combination of two or more.
- X each represents an alkylene group of ⁇ C
- k and m each represent the number of repeating OX units
- 1 indicates the number of repetitions in OX units.
- k + m is the number average degree of polymerization;! Is a number in the range of ⁇ 90 (m is not 0) and 1 is the number average degree of polymerization in the range of 0-80 .
- polyoxyalkylene diamine examples include polyoxypropylene diamine represented by the following formula (6), polyoxyethylene diamine represented by the following formula (7), and polyoxybutylene represented by the following formula (8).
- examples include rangeamins and copolymers comprising a plurality of polyoxyalkylenes at the end of these amines.
- the formula (6) As the polyoxypropylene diamine or copolymer, polyoxyalkylene diamine containing a skeleton derived from propylene oxide and ethylene oxide represented by the formula (5) is preferable.
- thermosetting polyimide resin composition of the present invention exhibits tackiness by using the polyoxyalkylene amine of the formula (3) in the soft segment.
- “adhesiveness” refers to the property of adhering by applying a slight pressure at room temperature for a short time without using water, solvent, heat, etc.
- “adhesive strength” refers to a test piece. This refers to the force required to peel off the substrate after applying it to the adherend for a short time at normal temperature without applying pressure and pressure.
- the molecular weight of the polyoxyalkylene diamine of formula (5) is preferably such that the cured product of the thermosetting polyimide resin composition having adhesiveness of the present invention exhibits appropriate adhesiveness.
- the number of propylene oxide repeats (& +) is 1.0 to 9.4 (c is not 0)
- the number of ethylene oxide repeats (b) is the number average degree of polymerization. 3.7 to 79.8), more preferably 600 to 2000
- the propylene oxide repeat number (a + c) is a number average degree of polymerization of 2.0 ⁇ 6.0 to 6.0, preferably 3.6.
- the number of ethylene oxide repeats (b) is 9.0 to 41.2, preferably 9.0 to 38.7) in terms of number average degree of polymerization.
- the molecular weight of the polyoxypropylene diamine of formula (6) is preferably 230 to 4000 from the same point as described above (the propylene oxide repeat number 1 is 2.6 to 68.68). 0)
- the number average degree of polymerization is 8.7 to 33.0).
- the molecular weight of the polyoxyethylene diamine of formula (7) is preferably 300 to 4000 (the number of ethylenic repeats 1 is a number average degree of polymerization of 5.5 to 89.5) from the same point as above. More preferably, it is 600 to 2000 (the number n of ethylene oxide repeats is 12.3-44.1 in terms of number average degree of polymerization).
- the molecular weight of the polyoxybutylene diamine of formula (8) is preferably 200 to 4000 (the number n of butylene oxide repeats is 1.6 to 54.3 in terms of number average degree of polymerization), more preferably
- the polyimide (a) which is a reaction product of the step (1) in the present invention, was selected from polyoxyalkylenediamine, tetracarboxylic dianhydride, tetracarboxylic acid, or a derivative of the tetracarboxylic acid. It can be obtained by a method in which a tetracarboxylic acid component composed of one or more compounds is added and subjected to an imidization reaction. Polyimide (a) can also be obtained by using a method in which polyoxyalkylene diamine is added to a tetracarboxylic acid component and an imidization reaction is performed.
- Polyimide (a) which is a reaction product of step (1) in the present invention, is obtained by converting a polyoxyalkylene diamine represented by formula (3) to a tetracarboxylic acid dicarboxylic acid represented by formula (1).
- Anhydride or formula (2) Power to be blended so as to be excessive with respect to 1 mol of tetracarboxylic acid component consisting of one or more compounds selected from tetracarboxylic acid represented by Preferably, it is synthesized by blending at a ratio of 1.01 mol to 2 mol, more preferably 1.25 mol to 2 mol. At this time, it is preferable to arrange amino groups at both ends of the reaction product.
- both ends of the reaction product of step (1) are amino acids derived from the polyoxyalkylene diamine component. It is preferable when obtaining a thermosetting polyimide resin composition in the step (3) described later.
- polyoxyalkylene diamine is blended at a ratio of 2 moles or less with respect to 1 mole of the tetracarboxylic acid component, the residual heat of the unreacted polyoxyalkylene diamine component is reduced, which is preferable.
- the polyimide (a) in the present invention can be obtained by performing a thermal imidization reaction in the absence of a solvent, but may be reacted in the presence of various organic solvents. Specifically, one or more solvents such as N, N-dimethylacetamide, N-methyl-2-pyrrolidone, N, N-dimethylformamide, dimethyl sulfoxide, hexamethylphosphoramide, tetramethylene sulfone are used. it can. Further, xylene or toluene may be added to perform azeotropic dehydration. Polyimide (a) is synthesized and diluted with a low-boiling solvent such as tetrahydrofuran, acetone or methanol.
- a low-boiling solvent such as tetrahydrofuran, acetone or methanol.
- the polyoxyalkylene diamine may be used after being dissolved in the organic solvent, if necessary.
- the reaction temperature of the imidization reaction is preferably 150 to 260 ° C, more preferably 180 to 260 ° C, and still more preferably 180 to 200 ° C. If the temperature is within the above range, the molecular weight is sufficiently increased and a practical polyimide can be synthesized. It is also advantageous in terms of cost.
- the reaction time is preferably from! To 12 hours, particularly from 3 to 6 hours, from the same viewpoint as the above reaction temperature.
- imidization reaction may be carried out by adding toluene or xylene as an azeotropic solvent.
- the formation of polyimide can be confirmed by the characteristic absorption of the imide ring near 1766cm- 1 and 1700cm-1 by IR spectrum.
- Z represents a divalent organic group.
- the divalent organic group include a divalent aliphatic group such as a polyalkylene group, a polyoxyalkylene group, a xylylene group, an alkyl-substituted product thereof, a halogen-substituted product, a carboxy-substituted product, and a hydroxy-substituted product; Divalent alicyclic groups derived from hexane, dicyclohexylmethane, dimethyl cyclohexane, isophorone, norbornane, their alkyl-substituted, halogen-substituted, carboxy-substituted, hydroxy-substituted, etc .; benzene, naphthalene, Bivalent aromatic groups derived from biphenylenoles, diphenylenomethanes,
- bismaleimide compound of the formula (4) include the following.
- both ends of polyoxyalkylene diamine are anhydrous maleic.
- a bismaleimide compound sealed with inacid for example, a bismaleimide compound in which both ends of polyoxyethylenediamine are sealed with maleic anhydride, and both ends of polyoxypropylenediamine are maleic anhydride. Examples thereof include a sealed bismaleimide compound and a compound in which both ends of polyoxybutylene diamine are sealed with maleic anhydride.
- Liquid B in step (2) in the present invention is obtained by the following method. Mix the bismaleimide compound and solvent and mix until a uniform solution is obtained.
- the mixing temperature is preferably 0 ° C to 80 ° C, more preferably 20 ° C to 60 ° C.
- Solvents used in obtaining the liquid B in step (2) in the present invention include amide solvents such as N, N dimethylacetamide, N methyl-2-pyrrolidone, N, N dimethylformamide, hexamethylphosphoramide, and methyl ethyl ketone.
- Ketone solvents such as acetone, cyclic ketone solvents such as cyclohexanone and cyclopentanone, cyclic ether solvents such as 1,4 dioxane, 1,3-dioxolane and tetrahydrofuran, and in addition to acetonitrile. It is.
- the solubility in bismaleimide compounds the volatility of the solvent itself Therefore, it is preferable to use 1,3-dioxolane.
- thermosetting polyimide resin composition in step (3) in the present invention is obtained by the following method. That is, the liquid A containing the polyimide (a) obtained in the step (1), the bis-maleimide compound obtained in the step (2) and the solvent B are mixed until a uniform liquid is obtained.
- the mixing temperature is preferably 0 to 80 ° C, more preferably 20 to 60 ° C. If the mixing temperature is within the above range, a uniform solution can easily be obtained.
- thermosetting polyimide resin composition is produced by mixing the A liquid and the B liquid in the step (3) in the present invention, the tetracarboxylic acid constituting the polyimide (a) contained in the A liquid at the time of mixing.
- the bismaleimide compound contained in the liquid B is preferably blended in a proportion of 0.05 to 4 mol, more preferably 0.15 to 2 mol, per 1 mol of the unit derived from the acid component. Then, the thermosetting polyimide resin composition which gives the hardened
- thermosetting polyimide resin composition when the liquid A and the liquid B are mixed in the step (3) of the present invention to produce a thermosetting polyimide resin composition, the tetracarboxylic acid constituting the polyimide (a) contained in the liquid A at the time of mixing.
- the crosslinking density of the cured product obtained by heat-curing the thermosetting polyimide resin composition by blending the bismaleimide compound contained in the filtrate in an amount within the above range with respect to 1 mol of the unit derived from the components. And sufficient strength can be obtained, and the flexibility of a cured product obtained by heating and curing a thermosetting polyimide resin composition is preferable.
- the cured product of the thermosetting polyimide resin composition having adhesiveness according to the present invention may be obtained by thermosetting the thermosetting polyimide resin composition obtained by mixing the liquid and the liquid. Cast onto a metal substrate such as stainless steel or aluminum to form a film and heat cure to obtain a cured polyimide.
- the curing temperature is preferably 50 to 200 ° C, 50 to 200, more preferably 150 ° C, and still more preferably 100 to 150 ° C. When the curing temperature is within the above range, the adhesive strength with few uncured parts is sufficiently good, and it is preferable that the adherend is stuck to the adhesive layer and then does not cause cohesive failure when peeled off. Moreover, it is advantageous also in terms of cost.
- the curing time is preferably from 0.;!
- the force is more preferably 1.0 to 10 hours.
- the curing temperature and the curing time are not limited to the above ranges.
- the heat-cured product that has been heat-cured on the substrate may be used as it is left on the substrate, or may be peeled off from the substrate and used as a fine-form.
- the cured product of the thermosetting polyimide resin composition having adhesiveness of the present invention generally corresponds to a material called an adhesive.
- the adhesive strength required as an adhesive is preferably about 0.00;! -250N / 25mm as a 90 degree peel adhesive strength, and can be used repeatedly.
- the appropriate adhesive strength and the required number of repeated uses are completely different depending on the nature of the adherend, the purpose of use, and the method of use. Further, after the operation of peeling off the adherend from the adhesive, the state in which the adhesive remains on the adherend surface is referred to as “adhesive residue”, and the difficulty of adhesive residue is referred to as “adhesive residue”.
- the adhesive residue is generally required to be good.
- thermosetting polyimide resin composition having adhesiveness according to the present invention has characteristics such as heat resistance, flexibility, and adhesiveness at high temperatures. Therefore, it can be used for a wide range of industrial products such as adhesive tape as a heat-resistant adhesive that requires flexibility and adhesiveness at high temperatures.
- IR spectra were obtained using JEOL $ iJIR—WINSPEC50 (infrared absorption spectrum).
- Measurement was performed at 25 ° C. using a TV-20 type cone plate viscometer manufactured by TOKIMEC.
- a polyimide film “Kapton 200H” (model number: 22M11P0860) made by Toray 'Dubon with a width of 25 mm, a length of 150 mm, and a thickness of 50 m is bonded to a cured product formed in a film on an aluminum plate, and 1 kg with a 2 kg rubber roller After reciprocating and holding for 30 minutes, at 23 ° C / 50% RH, at a peeling speed of 300 mm / min, pull Kapton 200H at a 90 ° angle, and 90 ° between the cured product and Kapton 200H. The peel strength (N / 25mm) was measured.
- IMADA digital force gauge ZP-5N, IMADA sliding motorized stand MX-500N, 90-degree peeling jig P90-200N were used as measuring instruments.
- the amino group concentration of this polyimide (a2) is 0.36 (meq / g), and the remaining amount of amino groups to be consumed by imidization is 0.3%.
- a liquid polyimide (a3) was obtained at 25 ° C.
- the amino group concentration of this polyimide (a3) is 0.71 (meq / g), and the remaining amount of amino groups to be consumed by imidization is 0.6%.
- the polyimide (a5) solution was gradually poured into 2 L of methanol while stirring to precipitate a polyimide (a5) solid.
- the polyimide (a5) solid was washed with methanol and allowed to stand in a dryer at 80 ° C. for 24 hours to obtain polyimide (a5).
- the amino group concentration of this polyimide (a5) is 0 ⁇ 23 (meq / g), and the remaining amount of amino groups to be consumed by imidization is 0 ⁇ 3%.
- ⁇ B1 liquid formulation> In a 500 mL five-necked flask equipped with a thermometer, stirrer, nitrogen inlet tube, dropping funnel with side tube, Dean Stark, and condenser, N, N'— (4,4'-diphenylmethane) Sumerimide (trade name: BMI-H, K'ai Kasei Co., Ltd.) 24 ⁇ 61g (0.064 mole), 1,3-dioxolan 248.34g was added and stirred at room temperature for 1 hour to completely dissolve. B1 A liquid was obtained.
- N, N '-[4, 4, 1-bis (3-methyl-5-ethylphenyl) methane] bismaleimide (trade name: BMI-70, Gay-Ii Kosei Co., Ltd.) 28.51g (0.064 monole)
- 1,3 di-aged Xolan 252.24g was added and stirred for 1 hour at room temperature to completely dissolve to obtain B2 solution It was.
- thermosetting polyimide resin composition 1 having a nonvolatile content concentration of 50% by weight was obtained.
- the solution viscosity of this thermosetting polyimide resin composition 1 was measured and found to be 0.16 Pa ′s.
- thermosetting polyimide resin composition 1 is applied to an aluminum plate having a size of 150 mm x 150 mm and a thickness of 1 mm at a coating thickness of 0.30 mm and placed in a dryer at 150 ° C for 10 hours to distill off volatile components.
- a cured product of thermosetting polyimide resin composition 1 having an adhesiveness of 0.15 mm in thickness was obtained.
- the 90 ° peel adhesive strength (N / 25 mm) of the cured product of thermosetting polyimide resin composition 1 having this adhesive property was 1.24 (N / 25 mm). The adhesive residue was good.
- thermosetting polyimide resin composition 1 having adhesiveness was peeled off from the aluminum plate with a scraper and confirmed to be a flexible film.
- the cured product of the thermosetting polyimide resin composition 1 having this adhesive property was dipped in DMAC and then dried to reduce the weight. As a result, it was confirmed that there was almost no uncured component with almost no weight loss. Further, a thermogravimetric analysis of the cured product of the thermosetting polyimide resin composition 1 having adhesiveness was performed. The weight loss% after holding at 250 ° C / 1 hour was 1.29%, and the weight loss was small.
- thermosetting polyimide resin composition 2 having a nonvolatile concentration of 50% by weight was obtained.
- the solution viscosity of the thermosetting polyimide resin composition 2 was measured and found to be 0.18 Pa's.
- thermosetting polyimide resin composition 2 was applied to the same aluminum plate as in Example 1 with a coating thickness of 0.30 mm, and placed in a dryer at 150 ° C for 10 hours to distill off volatile components and cure. As a result, a cured product of thermosetting polyimide resin composition 2 having a thickness of 0.15 mm was obtained.
- the 90 ° peel adhesive strength (N / 25 mm) of the cured product of thermosetting polyimide resin composition 2 having this adhesive property was 4.47 (N / 25 mm). The adhesive residue was good.
- the cured product of the thermosetting polyimide resin composition 2 having adhesiveness was peeled off from the aluminum plate with a scraper to confirm that it was a flexible film.
- thermosetting polyimide resin composition 2 having this adhesive property When the cured product of thermosetting polyimide resin composition 2 having this adhesive property was dipped in DMAC and dried, it was examined whether there was any weight loss. I confirmed that there was nothing. Further, a thermogravimetric analysis of the cured product of the thermosetting polyimide resin composition 2 having the tackiness was performed. The weight loss% at the time of holding at 250 ° C / 1 hour was 1.00%.
- thermosetting polyimide resin composition 3 having a nonvolatile concentration of 50% by weight was obtained.
- the solution viscosity of the thermosetting polyimide resin composition 3 was measured and found to be 0.19 Pa's.
- this thermosetting polyimide resin composition 3 was applied to the same aluminum plate as in Example 1 with a coating thickness of 0.30 mm, and then placed in a dryer at 150 ° C.
- thermosetting polyimide resin composition 3 When the volatile component was distilled away and cured, a cured product of thermosetting polyimide resin composition 3 having a thickness of 0.15 mm was obtained.
- the 90 ° peel adhesive strength (N / 25 mm) of the cured product of thermosetting polyimide resin composition 3 having this adhesive property was determined to be 0.49 (N / 25 mm).
- the adhesive residue was good.
- the cured product of the thermosetting polyimide resin composition 3 having adhesiveness was peeled off from the aluminum plate with a scraper to confirm that it was a flexible film.
- the cured product of thermosetting polyimide resin composition 3 having this adhesive property was dipped in DMAC and dried to examine whether there was any weight loss, most of the uncured components with little weight loss were found. I confirmed that there was nothing. Further, a thermogravimetric analysis was performed on the cured product of the thermosetting polyimide resin composition 3 having this adhesive property. The weight loss% at the time of holding at 250 ° C / 1 hour was
- thermosetting polyimide resin composition 4 having a nonvolatile content concentration of 50% by weight was obtained. It was 0.13 Pa's when the solution viscosity of this thermosetting polyimide resin composition 4 was measured.
- thermosetting polyimide resin composition 4 was applied to the same aluminum plate as in Example 1 at a coating thickness of 0.30 mm, and placed in a dryer at 150 ° C for 10 hours to distill off volatile components and cure. As a result, a cured product of thermosetting polyimide resin composition 4 having a thickness of 0.15 mm was obtained.
- the 90 ° peel adhesive strength (N / 25 mm) of the cured product of the thermosetting polyimide resin composition 4 having adhesiveness was determined to be 0.07 (N / 25 mm). The adhesive residue was good.
- the cured product of the thermosetting polyimide resin composition 4 having adhesiveness was peeled off with an aluminum plate force and a scraper to confirm that it was a flexible film.
- thermoset polyimide resin composition 4 having adhesive properties was dipped in DMAC and dried to examine whether there was any weight loss. Uncured components with almost no weight loss were found. I confirmed that there was almost nothing. Further, a thermogravimetric analysis of the cured product of the thermosetting polyimide resin composition 4 having adhesiveness was performed. The weight loss% when held at 250 ° C for 1 hour was 1.15%.
- Example 5 Provide of Thermosetting Polyimide Resin Composition 5>
- the whole amount of polyimide (a4) obtained in Synthesis Example 4 was added as Liquid A under a nitrogen stream.
- the total amount of the B1 solution was added, and the mixture was stirred for 1 hour at room temperature to completely dissolve it.
- a thermosetting polyimide resin composition 5 having a nonvolatile content concentration of 50% by weight was obtained.
- the solution viscosity of this thermosetting polyimide resin composition 4 was measured and found to be 0.15 Pa ′s.
- thermosetting polyimide resin composition 5 was applied to the same aluminum plate as in Example 1 at a coating thickness of 0.30 mm, and placed in a dryer at 150 ° C for 10 hours to distill off volatile components and cure. As a result, a cured product of thermosetting polyimide resin composition 5 having an adhesiveness of 0.15 mm in thickness was obtained.
- the 90 ° peel adhesive strength (N / 25 mm) of the cured product of the thermosetting polyimide resin composition 5 having this adhesive property was 1.48 (N / 25 mm). The adhesive residue was good.
- the cured product of the thermosetting polyimide resin composition 5 having adhesiveness was peeled off with an aluminum plate force and a scraper to confirm that it was a flexible film.
- thermosetting polyimide resin composition 5 having a tackiness was immersed in DMAC and then dried to examine whether there was any weight loss. Uncured components with little weight loss were found. I confirmed that there was almost nothing. Further, a thermogravimetric analysis was performed on the cured product of the thermosetting polyimide resin composition 5 having adhesiveness. The weight loss% when held at 250 ° C for 1 hour was 1.31%, and the power of weight reduction was small.
- the cured silicone product formed on this aluminum plate was placed in a dryer at 200 ° C for 3 hours, and after further curing, the 90 ° peel adhesive strength of the cured silicone product formed on the aluminum plate (N / 25mm) was 7.35 (N / 25mm).
- the adhesive residue was inferior because it was confirmed that the adhesive material, Kapton 200H, was adhered to a sticky substance considered to be derived from a cured silicone product.
- a thermogravimetric analysis of the cured silicone was performed. Weight loss at 250 ° C / 1 hour holding % was 1 ⁇ 56%.
- thermosetting polyimide resin composition solution having a solid content concentration of 10% by weight.
- this polyimide resin composition solution was applied to the same aluminum plate as in Example 1 with a coating thickness of 0.50 mm and placed in a dryer at 150 ° C for 1 hour and in a vacuum dryer at 180 ° C for 2 hours. When the solvent was distilled off and cured, a cured product having a thickness of 0.05 mm was obtained. This cured product had no power at all.
- thermosetting polyimide resin composition of the present invention is a two-component type and is cured at a temperature of 150 ° C or lower.
- the cured product is flexible, and has the characteristics that it is not only heat resistant, such as a small weight loss even when heated to 250 ° C, but also has adhesiveness.
- a liquid solution made of polyimide (a) which is a precursor of a thermosetting polyimide resin composition can be synthesized without a solvent, and can be diluted with a low boiling point solvent such as tetrahydrofuran or acetone.
- thermosetting polyimide resin composition of the present invention and the cured product thereof are suitable for applications that require both heat resistance and adhesiveness, for example, heat resistant adhesive materials, and electrical insulating materials as engineering plastics. Used.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Adhesives Or Adhesive Processes (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20070829112 EP2070987B1 (en) | 2006-10-04 | 2007-10-03 | Two-part thermocurable polyimide resin composition and cured product thereof |
ES07829112T ES2401392T3 (es) | 2006-10-04 | 2007-10-03 | Composiciones de resina de poliimida termocurable de dos partes y producto curado de la misma |
CN200780036643XA CN101541888B (zh) | 2006-10-04 | 2007-10-03 | 二液型热固性聚酰亚胺树脂组合物及其固化物 |
JP2008537544A JP5423949B2 (ja) | 2006-10-04 | 2007-10-03 | 2液型熱硬化性ポリイミド樹脂組成物及びその硬化物 |
US12/444,192 US8273456B2 (en) | 2006-10-04 | 2007-10-03 | Two-part thermocurable polyimide resin composition and cured product thereof |
Applications Claiming Priority (2)
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JP2006-273130 | 2006-10-04 | ||
JP2006273130 | 2006-10-04 |
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WO2008041723A1 true WO2008041723A1 (fr) | 2008-04-10 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2007/069373 WO2008041723A1 (fr) | 2006-10-04 | 2007-10-03 | Composition de résine polyimide thermodurcissable en deux parties et produit durci à base de ladite composition |
Country Status (8)
Country | Link |
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US (1) | US8273456B2 (ja) |
EP (1) | EP2070987B1 (ja) |
JP (1) | JP5423949B2 (ja) |
KR (1) | KR20090078786A (ja) |
CN (1) | CN101541888B (ja) |
ES (1) | ES2401392T3 (ja) |
TW (1) | TW200833784A (ja) |
WO (1) | WO2008041723A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009114439A (ja) * | 2007-10-17 | 2009-05-28 | Hitachi Chem Co Ltd | ポリイミド樹脂 |
WO2010128667A1 (ja) * | 2009-05-08 | 2010-11-11 | 三菱瓦斯化学株式会社 | 熱硬化性ポリイミド樹脂組成物、硬化物及び粘着剤 |
JP2011132366A (ja) * | 2009-12-24 | 2011-07-07 | Mitsubishi Gas Chemical Co Inc | 感光性・熱硬化性ポリイミド樹脂組成物及びその硬化物 |
JP2011144260A (ja) * | 2010-01-14 | 2011-07-28 | Mitsubishi Gas Chemical Co Inc | 粘着剤及び粘着テープ |
TWI488840B (zh) * | 2008-06-09 | 2015-06-21 | Mitsubishi Gas Chemical Co | 雙馬來醯胺酸,雙馬來亞醯胺和其硬化物 |
Families Citing this family (5)
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JP2007308676A (ja) * | 2006-04-18 | 2007-11-29 | Mitsubishi Gas Chem Co Inc | 熱硬化性ポリイミド樹脂組成物及びその硬化物 |
KR101817498B1 (ko) * | 2008-12-26 | 2018-01-11 | 미츠비시 가스 가가쿠 가부시키가이샤 | 수지 복합 동박 |
US8623253B2 (en) * | 2010-02-26 | 2014-01-07 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Low-melt poly(amic acids) and polyimides and their uses |
EP2580264A1 (en) * | 2010-06-08 | 2013-04-17 | Tata Steel Nederland Technology B.V. | A method of preparing a polyetherimide coated substrate |
CN101928460B (zh) * | 2010-08-18 | 2012-07-04 | 东华大学 | 含活性基团线型聚酰亚胺-马来酰亚胺共聚物薄膜的制备方法 |
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- 2007-10-03 JP JP2008537544A patent/JP5423949B2/ja not_active Expired - Fee Related
- 2007-10-03 US US12/444,192 patent/US8273456B2/en not_active Expired - Fee Related
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- 2007-10-03 WO PCT/JP2007/069373 patent/WO2008041723A1/ja active Application Filing
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Publication number | Priority date | Publication date | Assignee | Title |
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TWI488840B (zh) * | 2008-06-09 | 2015-06-21 | Mitsubishi Gas Chemical Co | 雙馬來醯胺酸,雙馬來亞醯胺和其硬化物 |
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JP2011144260A (ja) * | 2010-01-14 | 2011-07-28 | Mitsubishi Gas Chemical Co Inc | 粘着剤及び粘着テープ |
Also Published As
Publication number | Publication date |
---|---|
CN101541888A (zh) | 2009-09-23 |
CN101541888B (zh) | 2013-01-23 |
EP2070987B1 (en) | 2012-12-12 |
US20100029893A1 (en) | 2010-02-04 |
EP2070987A1 (en) | 2009-06-17 |
JPWO2008041723A1 (ja) | 2010-02-04 |
JP5423949B2 (ja) | 2014-02-19 |
ES2401392T3 (es) | 2013-04-19 |
EP2070987A4 (en) | 2011-08-10 |
TW200833784A (en) | 2008-08-16 |
KR20090078786A (ko) | 2009-07-20 |
US8273456B2 (en) | 2012-09-25 |
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