WO2010035459A1 - エピスルフィド化合物、エピスルフィド化合物含有混合物、エピスルフィド化合物含有混合物の製造方法、硬化性組成物及び接続構造体 - Google Patents
エピスルフィド化合物、エピスルフィド化合物含有混合物、エピスルフィド化合物含有混合物の製造方法、硬化性組成物及び接続構造体 Download PDFInfo
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- WO2010035459A1 WO2010035459A1 PCT/JP2009/004797 JP2009004797W WO2010035459A1 WO 2010035459 A1 WO2010035459 A1 WO 2010035459A1 JP 2009004797 W JP2009004797 W JP 2009004797W WO 2010035459 A1 WO2010035459 A1 WO 2010035459A1
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- 0 C(COc(c1c2cccc1)c(cccc1)c1c2O*C1SC1)C1SC1 Chemical compound C(COc(c1c2cccc1)c(cccc1)c1c2O*C1SC1)C1SC1 0.000 description 3
- UFWIBTONFRDIAS-UHFFFAOYSA-N c1cc2ccccc2cc1 Chemical compound c1cc2ccccc2cc1 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D331/00—Heterocyclic compounds containing rings of less than five members, having one sulfur atom as the only ring hetero atom
- C07D331/02—Three-membered rings
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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
- C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
- C08G75/02—Polythioethers
- C08G75/06—Polythioethers from cyclic thioethers
- C08G75/08—Polythioethers from cyclic thioethers from thiiranes
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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
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives 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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
- C09J163/10—Epoxy resins modified by unsaturated compounds
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/038—Macromolecular compounds which are rendered insoluble or differentially wettable
Definitions
- the present invention is an episulfide compound that can be rapidly cured at a low temperature, and can be efficiently connected to the connection target member and can suppress the formation of voids after the connection when used for connection of the connection target member. And an episulfide compound-containing mixture containing the episulfide compound, a method for producing the episulfide compound-containing mixture, a curable composition, and a connection structure.
- Anisotropic conductive materials such as anisotropic conductive paste, anisotropic conductive ink, anisotropic conductive adhesive, anisotropic conductive film, or anisotropic conductive sheet are widely known.
- An anisotropic conductive material is used for connection between an IC chip and a flexible printed circuit board, or between an IC chip and a circuit board having an ITO electrode.
- an anisotropic conductive material is arranged between the electrode of the IC chip and the electrode of the circuit board, these electrodes can be connected by heating and pressurizing.
- Patent Document 1 discloses a different material containing a thermosetting insulating adhesive, conductive particles, an imidazole-based latent curing agent, and an amine-based latent curing agent.
- An isotropic conductive adhesive film is disclosed.
- Patent Document 1 describes that the connection reliability is excellent even when this anisotropic conductive adhesive film is cured at a relatively low temperature.
- the heating temperature necessary to start curing is relatively low.
- the curing reaction may not proceed sufficiently at low temperatures.
- the object of the present invention can be quickly cured at a low temperature, and further, when used for connection of a connection target member, the connection target member can be efficiently connected, and generation of voids after connection can be suppressed.
- An object is to provide an episulfide compound, an episulfide compound-containing mixture containing the episulfide compound, a method for producing the episulfide compound-containing mixture, a curable composition, and a connection structure.
- an episulfide compound having a structure represented by the following formula (1-1), (2-1) or (3).
- R1 and R2 each represent an alkylene group having 1 to 5 carbon atoms, and 2 to 4 groups out of the four groups R3, R4, R5 and R6 represent hydrogen. , R3, R4, R5 and R6 are not hydrogen and represent a group represented by the following formula (4).
- R51 and R52 each represent an alkylene group having 1 to 5 carbon atoms, and 4 to 6 groups out of 6 groups of R53, R54, R55, R56, R57 and R58.
- R101 and R102 each represent an alkylene group having 1 to 5 carbon atoms, and 6 to 8 of 8 groups of R103, R104, R105, R106, R107, R108, R109 and R110
- the group of represents hydrogen, and the group which is not hydrogen among R103, R104, R105, R106, R107, R108, R109 and R110 represents a group represented by the following formula (6).
- R7 represents an alkylene group having 1 to 5 carbon atoms.
- R59 represents an alkylene group having 1 to 5 carbon atoms.
- R111 represents an alkylene group having 1 to 5 carbon atoms.
- the episulfide compound has a structure represented by the following formula (1) or (2).
- R1 and R2 each represent an alkylene group having 1 to 5 carbon atoms
- 2 to 4 groups out of 4 groups of R3, R4, R5 and R6 represent hydrogen
- R3 , R4, R5 and R6, which are not hydrogen, represent a group represented by the following formula (4).
- R51 and R52 each represents an alkylene group having 1 to 5 carbon atoms, and 4 to 6 groups out of 6 groups of R53, R54, R55, R56, R57 and R58 are hydrogen.
- the group which is not hydrogen among R53, R54, R55, R56, R57 and R58 represents a group represented by the following formula (5).
- R7 represents an alkylene group having 1 to 5 carbon atoms.
- R59 represents an alkylene group having 1 to 5 carbon atoms.
- the structure represented by the above formula (1) or (2) is a structure represented by the following formula (1A) or (2A).
- R1 and R2 each represent an alkylene group having 1 to 5 carbon atoms.
- R51 and R52 each represent an alkylene group having 1 to 5 carbon atoms.
- the episulfide compound-containing mixture according to the present invention contains the episulfide compound of the present invention and an epoxy compound represented by the following formula (11-1), (12-1) or (13).
- R11 and R12 each represent an alkylene group having 1 to 5 carbon atoms, and 2 to 4 groups out of the four groups R13, R14, R15 and R16 represent hydrogen.
- R13, R14, R15 and R16 are a group which is not hydrogen and represents a group represented by the following formula (14).
- R61 and R62 each represent an alkylene group having 1 to 5 carbon atoms, and 4 to 6 groups out of 6 groups of R63, R64, R65, R66, R67 and R68. Represents hydrogen, and the non-hydrogen group in R63, R64, R65, R66, R67 and R68 represents a group represented by the following formula (15).
- R121 and R122 each represent an alkylene group having 1 to 5 carbon atoms, and 6 to 8 of 8 groups of R123, R124, R125, R126, R127, R128, R129 and R130
- the group of represents hydrogen, and the group which is not hydrogen among R123, R124, R125, R126, R127, R128, R129 and R130 represents a group represented by the following formula (16).
- R17 represents an alkylene group having 1 to 5 carbon atoms.
- R69 represents an alkylene group having 1 to 5 carbon atoms.
- R131 represents an alkylene group having 1 to 5 carbon atoms.
- the epoxy compound is an epoxy compound represented by the following formula (11) or (12).
- R11 and R12 each represent an alkylene group having 1 to 5 carbon atoms, 2 to 4 groups out of 4 groups of R13, R14, R15 and R16 represent hydrogen, and R13 , R14, R15 and R16 which are not hydrogen represent a group represented by the following formula (14).
- R61 and R62 each represent an alkylene group having 1 to 5 carbon atoms, and 4 to 6 groups out of 6 groups of R63, R64, R65, R66, R67 and R68 are hydrogen.
- the group which is not hydrogen among R63, R64, R65, R66, R67 and R68 represents a group represented by the following formula (15).
- R17 represents an alkylene group having 1 to 5 carbon atoms.
- R69 represents an alkylene group having 1 to 5 carbon atoms.
- the structure represented by the above formula (11) or (12) is a structure represented by the following formula (11A) or (12A).
- R11 and R12 each represent an alkylene group having 1 to 5 carbon atoms.
- R61 and R62 each represent an alkylene group having 1 to 5 carbon atoms.
- an epoxy compound represented by the above formula (11-1), (12-1) or (13) or the epoxy compound is added to the first solution containing thiocyanate.
- the second solution containing thiocyanate is further added continuously or intermittently to convert some epoxy groups of the epoxy compound into episulfide groups. Convert.
- the epoxy compound or the epoxy compound represented by the formula (11) or (12) is used as the epoxy compound or a solution containing the epoxy compound.
- a containing solution is used.
- the curable composition according to the present invention contains the episulfide compound of the present invention and a curing agent.
- the curable composition according to the present invention contains the episulfide compound-containing mixture of the present invention and a curing agent.
- This curable composition also contains the episulfide compound in the episulfide compound-containing mixture.
- a photocurable compound and a photopolymerization initiator are further contained.
- conductive particles are further contained.
- connection structure includes a first connection target member, a second connection target member, and a connection portion connecting the first and second connection target members, and the connection Part is formed by the curable composition of the present invention.
- the curable composition contains conductive particles, and the first and second connection target members are electrically connected by the conductive particles. Yes.
- the episulfide compound according to the present invention has a structure represented by the above formula (1-1), (2-1) or (3), it can be quickly cured at a low temperature.
- the episulfide compound according to the present invention has a structure represented by the above formula (1) or (2), it can be cured more rapidly at a low temperature.
- the episulfide compound-containing mixture according to the present invention contains an episulfide compound having a structure represented by the above formula (1-1) or (2-1), it can be rapidly cured at a low temperature.
- the episulfide compound-containing mixture according to the present invention has a structure represented by the above formula (1) or (2), it can be cured more rapidly at a low temperature.
- connection target member can be efficiently connected by using the episulfide compound according to the present invention or the episulfide compound-containing mixture according to the present invention for connection of the connection target members. Furthermore, it can suppress that a void arises after a connection. Even if the connection target member having irregularities on the surface is connected, generation of voids can be suppressed.
- FIG. 1 is a partially cutaway cross-sectional view schematically showing an example of a connection structure using a curable composition according to an embodiment of the present invention.
- the episulfide compound according to the present invention has a structure represented by the following formula (1-1), (2-1) or (3).
- the bonding sites of the six groups bonded to the benzene ring are not particularly limited.
- the bonding sites of the eight groups bonded to the naphthalene ring are not particularly limited.
- R1 and R2 each represent an alkylene group having 1 to 5 carbon atoms.
- R3, R4, R5 and R6, 2 to 4 groups represent hydrogen.
- the group which is not hydrogen among R3, R4, R5 and R6 represents a group represented by the following formula (4).
- All four groups of R3, R4, R5 and R6 may be hydrogen.
- One or two of the four groups of R3, R4, R5 and R6 is a group represented by the following formula (4), and among the four groups of R3, R4, R5 and R6
- the group that is not a group represented by the following formula (4) may be hydrogen.
- R51 and R52 each represents an alkylene group having 1 to 5 carbon atoms.
- R53, R54, R55, R56, R57 and R58 4 to 6 groups represent hydrogen.
- the group which is not hydrogen among R53, R54, R55, R56, R57 and R58 represents a group represented by the following formula (5).
- All of the six groups of R53, R54, R55, R56, R57 and R58 may be hydrogen.
- One or two of the six groups of R53, R54, R55, R56, R57 and R58 are groups represented by the following formula (5), and R53, R54, R55, R56, R57 and R58. Of these, a group that is not a group represented by the following formula (5) may be hydrogen.
- R101 and R102 each represent an alkylene group having 1 to 5 carbon atoms.
- Six to eight groups out of the eight groups R103, R104, R105, R106, R107, R108, R109 and R110 represent hydrogen.
- the group which is not hydrogen among R103, R104, R105, R106, R107, R108, R109 and R110 represents a group represented by the following formula (6). All of the eight groups of R103, R104, R105, R106, R107, R108, R109 and R110 may be hydrogen.
- R103, R104, R105, R106, R107, R108, R109 and R110 are groups represented by the following formula (6), and R103, R104, R105, R106 , R107, R108, R109 and R110, which is not a group represented by the following formula (6), may be hydrogen.
- R7 represents an alkylene group having 1 to 5 carbon atoms.
- R59 represents an alkylene group having 1 to 5 carbon atoms.
- R111 represents an alkylene group having 1 to 5 carbon atoms.
- the episulfide compound according to the present invention preferably has a structure represented by the following formula (1), the following formula (2), or the above formula (3). From the viewpoint of curing more rapidly at a low temperature, the episulfide compound according to the present invention preferably has a structure represented by the following formula (1) or (2).
- R1 and R2 each represent an alkylene group having 1 to 5 carbon atoms. Of the four groups of R3, R4, R5 and R6, 2 to 4 groups represent hydrogen. The group which is not hydrogen among R3, R4, R5 and R6 represents a group represented by the above formula (4).
- R51 and R52 each represent an alkylene group having 1 to 5 carbon atoms.
- R53, R54, R55, R56, R57 and R58 4 to 6 groups represent hydrogen.
- the group which is not hydrogen among R53, R54, R55, R56, R57 and R58 represents a group represented by the above formula (5).
- any of the episulfide compounds having the structure represented by the above formula (1-1), (2-1) or (3) and the above formula (1) or (2) has at least two episulfide groups.
- a group having an episulfide group is bonded to a benzene ring, a naphthalene ring, or an anthracene ring. Since it has such a structure, the mixture can be rapidly cured at a low temperature by heating a mixture in which, for example, a curing agent is added to the episulfide compound.
- the episulfide compound having the structure represented by the above formula (1-1), (2-1) or (3) has an episulfide group in the above formula (1-1), (2-1) or (3). Reactivity is higher than compounds that are epoxy groups.
- the episulfide compound having a structure represented by the above formula (1) or (2) has a higher reactivity than a compound in which the episulfide group in the above formula (1) or (2) is an epoxy group. This is because the episulfide group is easier to open and more reactive than the epoxy group.
- the episulfide compound having the structure represented by the above formula (1-1), (2-1) or (3) and the episulfide compound having the structure represented by the above formula (1) or (2) have reactivity. Since it is high, it can be quickly cured at a low temperature.
- R1 and R2 in the above formulas (1-1) and (1), R51 and R52 in the above formulas (2-1) and (2), R101 and R102 in the above formula (3), and the above formula (4) R7 in the formula, R59 in the formula (5), and R111 in the formula (6) are all alkylene groups having 1 to 5 carbon atoms. If the alkylene group has more than 5 carbon atoms, the curing rate of the episulfide compound tends to decrease.
- R1 and R2 in the above formulas (1-1) and (1), R51 and R52 in the above formulas (2-1) and (2), R101 and R102 in the above formula (3), and the above formula (4) R7 in the formula, R59 in the formula (5), and R111 in the formula (6) are each preferably an alkylene group having 1 to 3 carbon atoms, and more preferably a methylene group.
- the alkylene group may be an alkylene group having a straight chain structure or an alkylene group having a branched structure.
- the structure represented by the above (1) is preferably a structure represented by the following formula (1A).
- An episulfide compound having a structure represented by the following formula (1A) is excellent in curability.
- R1 and R2 each represent an alkylene group having 1 to 5 carbon atoms.
- the structure represented by the above formula (1) is more preferably a structure represented by the following formula (1B).
- An episulfide compound having a structure represented by the following formula (1B) is more excellent in curability.
- the structure represented by the above (2) is preferably a structure represented by the following formula (2A).
- An episulfide compound having a structure represented by the following formula (2A) is excellent in curability.
- R51 and R52 each represent an alkylene group having 1 to 5 carbon atoms.
- the structure represented by the above formula (2) is more preferably a structure represented by the following formula (2B).
- An episulfide compound having a structure represented by the following formula (2B) is more excellent in curability.
- the structure represented by the above (3) is preferably a structure represented by the following formula (3A).
- An episulfide compound having a structure represented by the following formula (3A) is excellent in curability.
- R101 and R102 each represent an alkylene group having 1 to 5 carbon atoms.
- the structure represented by the above formula (3) is more preferably a structure represented by the following formula (3B).
- An episulfide compound having a structure represented by the following formula (3B) is more excellent in curability.
- the episulfide compound-containing mixture according to the present invention includes an episulfide compound represented by the above formula (1-1), (2-1) or (3) and the following formula (11-1), (12-1) or ( And an epoxy compound represented by 13).
- the bonding sites of the six groups bonded to the benzene ring are not particularly limited.
- the bonding sites of the eight groups bonded to the naphthalene ring are not particularly limited.
- R11 and R12 each represent an alkylene group having 1 to 5 carbon atoms. Of the four groups of R13, R14, R15 and R16, 2 to 4 groups represent hydrogen. The group which is not hydrogen among R13, R14, R15 and R16 represents a group represented by the following formula (14). All four groups of R13, R14, R15 and R16 may be hydrogen. One or two of the four groups of R13, R14, R15 and R16 is a group represented by the following formula (14), and among the four groups of R13, R14, R15 and R16 The group that is not a group represented by the following formula (14) may be hydrogen.
- R61 and R62 each represent an alkylene group having 1 to 5 carbon atoms.
- R63, R64, R65, R66, R67 and R68 4 to 6 groups represent hydrogen.
- the group which is not hydrogen among R63, R64, R65, R66, R67 and R68 represents a group represented by the following formula (15). All of the six groups of R63, R64, R65, R66, R67 and R68 may be hydrogen.
- One or two of the six groups R63, R64, R65, R66, R67 and R68 are groups represented by the following formula (15), and R63, R64, R65, R66, R67 and R68. Of these six groups, the group that is not the group represented by the following formula (15) may be hydrogen.
- R121 and R122 each represent an alkylene group having 1 to 5 carbon atoms.
- 6 to 8 groups out of 8 groups of R123, R124, R125, R126, R127, R128, R129 and R130 represent hydrogen.
- the group which is not hydrogen among R123, R124, R125, R126, R127, R128, R129 and R130 represents a group represented by the following formula (16). All of the eight groups of R123, R124, R125, R126, R127, R128, R129, and R130 may be hydrogen.
- R123, R124, R125, R126, R127, R128, R129, and R130 are groups represented by the following formula (16), and R123, R124, R125, R126 Of the eight groups R127 and R128, a group that is not a group represented by the following formula (16) may be hydrogen.
- R17 represents an alkylene group having 1 to 5 carbon atoms.
- R69 represents an alkylene group having 1 to 5 carbon atoms.
- R131 represents an alkylene group having 1 to 5 carbon atoms.
- the episulfide compound-containing mixture according to the present invention comprises a compound represented by the above formula (1), the above formula (2) or the above formula (3), and the following formula (11): ), And an epoxy compound represented by the following formula (12) or the above formula (13).
- the episulfide compound-containing mixture according to the present invention is represented by the compound represented by the above formula (1) or (2) and the following formula (11) or (12). It is preferable to contain an epoxy compound.
- R11 and R12 each represent an alkylene group having 1 to 5 carbon atoms. Of the four groups of R13, R14, R15 and R16, 2 to 4 groups represent hydrogen. The group which is not hydrogen among R13, R14, R15 and R16 represents a group represented by the above formula (14).
- R61 and R62 each represent an alkylene group having 1 to 5 carbon atoms.
- R63, R64, R65, R66, R67 and R68 4 to 6 groups represent hydrogen.
- the group which is not hydrogen among R63, R64, R65, R66, R67 and R68 represents a group represented by the above formula (15).
- R17 in the formula, R69 in the formula (15), and R131 in the formula (16) are all alkylene groups having 1 to 5 carbon atoms. When carbon number of this alkylene group exceeds 5, the hardening rate of the said episulfide compound containing mixture will fall easily.
- R17 in the formula, R69 in the formula (15), and R131 in the formula (16) are each preferably an alkylene group having 1 to 3 carbon atoms, and more preferably a methylene group.
- the alkylene group may be an alkylene group having a straight chain structure or an alkylene group having a branched structure.
- the structure represented by the above (11) is preferably a structure represented by the following formula (11A).
- An epoxy compound having a structure represented by the following formula (11A) is commercially available and can be easily obtained.
- R11 and R12 each represent an alkylene group having 1 to 5 carbon atoms.
- the structure represented by the above formula (11) is more preferably a structure represented by the following formula (11B).
- the epoxy compound having a structure represented by the following formula (11B) is resorcinol diglycidyl ether. Resorcinol diglycidyl ether is commercially available and can be easily obtained.
- the structure represented by (12) is preferably a structure represented by the following formula (12A).
- An epoxy compound having a structure represented by the following formula (12A) can be easily obtained.
- R61 and R62 each represent an alkylene group having 1 to 5 carbon atoms.
- the structure represented by the above formula (12) is more preferably a structure represented by the following formula (12B).
- An epoxy compound having a structure represented by the following formula (12B) can be easily obtained.
- the structure represented by (13) is preferably a structure represented by the following formula (13A).
- An epoxy compound having a structure represented by the following formula (13A) can be easily obtained.
- R101 and R102 each represent an alkylene group having 1 to 5 carbon atoms.
- the structure represented by the above formula (13) is more preferably a structure represented by the following formula (13B).
- An epoxy compound having a structure represented by the following formula (13B) can be easily obtained.
- the episulfide compound-containing mixture according to the present invention contains 10 to 99.9% by weight of an episulfide compound having a structure represented by the above formula (1-1), (2-1) or (3), and the above formula It is preferable to contain 90 to 0.01% by weight of the epoxy compound represented by (11-1), (12-1) or (13).
- the episulfide compound-containing mixture according to the present invention contains 80 to 99.9 wt% of an episulfide compound having a structure represented by the above formula (1-1), (2-1) or (3), and More preferably, the epoxy compound represented by (11-1), (12-1) or (13) is contained in an amount of 0.1 to 20% by weight.
- the episulfide compound-containing mixture according to the present invention contains 10 to 99.9% by weight of an episulfide compound having a structure represented by the above formula (1) or (2), and the above formula (11) or (12) It is preferable to contain 90 to 0.1% by weight of the represented epoxy compound.
- the episulfide compound-containing mixture according to the present invention contains 80 to 99.9% by weight of an episulfide compound having a structure represented by the above formula (1) or (2), and the above formula (11) or (12) More preferably, the epoxy compound is contained in an amount of 0.1 to 20% by weight.
- the content of the episulfide compound having the structure represented by the above formula (1-1), (2-1) or (3) and the episulfide compound having the structure represented by the above formula (1) or (2) If the amount is too small, the curing rate of the episulfide compound-containing mixture may not be sufficiently high.
- the method for producing the episulfide compound and the method for producing the episulfide compound-containing mixture are not particularly limited.
- As the production method for example, an epoxy compound represented by the above formula (11-1), (12-1) or (13) or the above formula (11) or (12) is prepared, and the epoxy compound The manufacturing method which converts all or one part epoxy groups into an episulfide group is mentioned.
- an epoxy represented by the formula (11-1), (12-1) or (13) is added to the first solution containing thiocyanate.
- a method in which a compound or a solution containing the epoxy compound is continuously or intermittently added, and then a second solution containing thiocyanate is further added continuously or intermittently is preferable.
- all or one part epoxy groups of the said epoxy compound can be converted into an episulfide group.
- the epoxy compound or the solution containing the epoxy compound is preferably an epoxy compound represented by the formula (1) or (2) or a solution containing the epoxy compound.
- an episulfide compound having a structure represented by the above formula (1-1), (2-1) or (3) can be obtained. Furthermore, an episulfide compound having a structure represented by the above formula (1) or (2) can also be obtained. As a result of converting some of the epoxy groups into episulfide groups, an episulfide compound having a structure represented by the above formula (1-1), (2-1) or (3), and the above formula (11-1), An episulfide compound-containing mixture containing the epoxy compound represented by (12-1) or (13) can be obtained. Furthermore, an episulfide compound-containing mixture containing an episulfide compound having a structure represented by the above formula (1) or (2) and an epoxy compound represented by the above formula (11) or (12) can also be obtained. .
- the episulfide compound and the episulfide compound-containing mixture can be produced as follows.
- a solvent, water, and thiocyanate are added to dissolve the thiocyanate, thereby preparing a first solution in the container.
- the solvent include methanol or ethanol.
- the thiocyanate include ammonium thiocyanate, potassium thiocyanate, and sodium thiocyanate.
- the concentration of thiocyanate in the first solution is preferably in the range of 0.001 to 0.2 g / mL, and more preferably in the range of 0.005 to 0.1 g / mL. If the concentration of thiocyanate is too high, the epoxy compound may be polymerized. If the thiocyanate concentration is too low, epoxy groups may not be converted to episulfide groups.
- an epoxy compound having a structure represented by the formula (11-1), (12-1), (13), (11) or (12) or the epoxy compound Prepare a solution containing.
- the first solution contains an epoxy compound having the structure represented by the formula (11-1), (12-1), (13), (11) or (12) or the epoxy compound
- the solution is added continuously or intermittently.
- the temperature of the first solution at this time is preferably in the range of 15 to 30 ° C. It is preferable to stir for 0.5 to 12 hours after the addition of the epoxy compound. You may add the said epoxy compound or the solution containing this epoxy compound in several steps. For example, after adding a part of the epoxy compound or the solution containing the epoxy compound, the mixture is stirred for at least 0.5 hour, and then the remaining epoxy compound or the solution containing the epoxy compound is further added. Stir for up to 12 hours.
- concentration of the epoxy compound of this solution is not specifically limited.
- the addition rate of the epoxy compound or the solution containing the epoxy compound in the first solution is preferably in the range of 1 to 10 mL / min, and more preferably in the range of 2 to 8 mL / min. . If the addition rate of the epoxy compound or the solution containing the epoxy compound is too fast, the epoxy compound may be polymerized. If the addition rate of the epoxy compound or the solution containing the epoxy compound is too slow, the production efficiency of the episulfide compound may be reduced.
- the concentration of the epoxy compound is preferably in the range of 0.05 to 0.8 g / mL, More preferably, it is in the range of 1 to 0.5 g / mL. If the concentration of the epoxy compound is too high, the epoxy compound may be polymerized.
- the second solution containing a solvent, water, and thiocyanate is continuously or intermittently added to the mixed solution in which the epoxy compound or the solution containing the epoxy compound is added to the first solution. Add more. It is preferable to stir for 0.5 to 12 hours after the addition of the second solution. Further, it is preferable to stir within the range of 15 to 60 ° C. after the addition of the second solution.
- the second solution may be added in multiple stages. For example, a part of the second solution may be added and then stirred for at least 0.5 hour, and then the remaining second solution may be further added and stirred for 0.5 to 12 hours.
- the concentration of thiocyanate in the second solution is preferably in the range of 0.001 to 0.7 g / mL, and more preferably in the range of 0.005 to 0.5 g / mL. If the concentration of thiocyanate is too high, the epoxy compound may be polymerized. If the thiocyanate concentration is too low, epoxy groups may not be converted to episulfide groups.
- the addition rate of the second solution to the mixed solution is preferably in the range of 1 to 10 mL / min, and more preferably in the range of 2 to 8 mL / min. If the addition rate of the second solution is too fast, the epoxy compound may be polymerized. If the addition rate of the second solution is too slow, the production efficiency of the episulfide compound may decrease.
- a method for removing water, solvent or unreacted thiocyanate a conventionally known method is used.
- the first solution or the second solution may contain a catalyst such as palladium metal particles or titanium oxide.
- the conversion of episulfide groups can be adjusted by using a solution containing the catalyst. Moreover, since an epoxy group can be converted into an episulfide group in a low temperature environment, the polymerization reaction of the epoxy compound can be suppressed.
- the concentration of the catalyst in the first solution or the concentration of the catalyst in the second solution is preferably in the range of 0.05 to 1.0 g / mL.
- an episulfide compound or an episulfide compound-containing mixture can be obtained.
- an episulfide compound containing 100% by weight of an episulfide compound having a structure represented by the above formula (1-1), (2-1), (3), (1) or (2) Obtainable.
- the curable composition concerning this invention contains the episulfide compound of this invention, and a hardening
- the curable composition concerning this invention contains the episulfide compound containing mixture of this invention, and a hardening
- curing agent only 1 type may be used and 2 or more types may be used together.
- the curable composition according to the present invention contains at least one episulfide compound.
- the curable composition concerning this invention contains at least 1 sort (s) of the said episulfide compound containing mixture.
- the curable composition according to the present invention contains at least one episulfide compound and at least one episulfide compound-containing mixture. Accordingly, two or more of the above-mentioned episulfide compounds may be used in combination as the curable resin, or two or more of the above-mentioned episulfide compound-containing mixture may be used together, and the above-mentioned episulfide compound and the above-mentioned episulfide compound-containing mixture are used in combination. May be.
- the curing agent is not particularly limited.
- the curing agent include an imidazole curing agent, an amine curing agent, a phenol curing agent, a polythiol curing agent, and an acid anhydride.
- curing agent is preferable.
- a storage stability can be improved when the said episulfide compound or the said episulfide compound containing mixture and the said hardening
- the latent curing agent is preferably a latent imidazole curing agent, a latent polythiol curing agent or a latent amine curing agent. Only 1 type may be used for these hardening
- the imidazole curing agent is not particularly limited, but 2-methylimidazole, 2-ethyl-4-methylimidazole, 1-cyanoethyl-2-phenylimidazole, 1-cyanoethyl-2-phenylimidazolium trimellitate, 2, 4-Diamino-6- [2'-methylimidazolyl- (1 ')]-ethyl-s-triazine or 2,4-diamino-6- [2'-methylimidazolyl- (1')]-ethyl-s- Examples include triazine isocyanuric acid adducts.
- the polythiol curing agent is not particularly limited, and examples thereof include trimethylolpropane tris-3-mercaptopropionate, pentaerythritol tetrakis-3-mercaptopropionate, dipentaerythritol hexa-3-mercaptopropionate, and the like. .
- the amine curing agent is not particularly limited, but is hexamethylenediamine, octamethylenediamine, decamethylenediamine, 3,9-bis (3-aminopropyl) 2,4,8,10-tetraspiro [5.5] undecane. Bis (4-aminocyclohexyl) methane, metaphenylenediamine, diaminodiphenylsulfone and the like.
- polythiol compounds or acid anhydrides are preferably used. More preferably, a polythiol compound is used because the curing rate of the curable composition can be further increased.
- pentaerythritol tetrakis-3-mercaptopropionate is more preferable.
- the curing rate of the curable composition can be further increased.
- the content of the curing agent is not particularly limited. 100 parts by weight of the episulfide compound or the episulfide compound-containing mixture ((when the epoxy compound is not included, 100 parts by weight of the episulfide compound is shown, and when the epoxy compound is contained, 100 parts by weight of the episulfide compound-containing mixture)
- the curing agent is preferably contained in the range of 1 to 40 parts by weight, and the curable composition is sufficiently cured when the content of the curing agent is less than 1 part by weight. When the content of the curing agent exceeds 40 parts by weight, the heat resistance of the cured product of the curable composition may be reduced, based on 100 parts by weight of the episulfide compound or the episulfide compound-containing mixture.
- the more preferable lower limit of the content of the curing agent is 30 parts by weight, and the still more preferable lower limit is 45 parts by weight.
- a more preferable upper limit is 100 parts by weight, and an even more preferable upper limit is 75 parts by weight. If the content of the curing agent is too small, the curable composition is hard to be cured sufficiently. In some cases, an excessive curing agent that did not participate in curing may remain after curing.
- the imidazole curing agent or the phenol curing agent is in the range of 1 to 15 parts by weight with respect to 100 parts by weight of the episulfide compound or the episulfide compound-containing mixture. It is preferable to contain.
- curing agent is an amine hardening
- curing agent, or an acid anhydride is 15 with respect to 100 weight part of the said episulfide compound or the said episulfide compound containing mixture. It is preferably contained in the range of ⁇ 40 parts by weight.
- the curable composition according to the present invention preferably further contains a storage stabilizer.
- the curable composition according to the present invention preferably further contains at least one selected from the group consisting of phosphate ester, phosphite ester and borate ester as the storage stabilizer. It is more preferable to contain.
- a phosphite the storage stability of the episulfide compound or the episulfide compound-containing mixture can be further enhanced.
- the said storage stabilizer only 1 type may be used and 2 or more types may be used together.
- phosphite examples include trimethyl phosphite, triethyl phosphite, tri n-butyl phosphite, tris (2-ethylhexyl) phosphite, triisooctyl phosphite, tridecyl phosphite, triisodecyl phosphite, tris (Tridecyl) phosphite, trioleyl phosphite, tristearyl phosphite, triphenyl phosphite, tris (nonylphenyl) phosphite, tris (2,4-di-t-butylphenyl) phosphite, phenyl diisooctyl phosphite Phyto, phenyl diisodecyl phosphite, diphenyl mono (2-ethylhexyl) phos
- diphenyl mono (2-ethylhexyl) phosphite diphenyl monodecyl phosphite or diphenyl mono (tridecyl) phosphite is preferable, diphenyl monodecyl phosphite or diphenyl mono (tridecyl) phosphite is more preferable, and diphenyl mono (tridecyl) More preferred are phosphites.
- boric acid ester examples include trimethyl borate, triethyl borate, tri-n-propyl borate, triisopropyl borate, tri-n-butyl borate, tripentyl borate, triallyl borate, trihexyl borate, tricyclohexyl borate, and trioctyl.
- the content of the storage stabilizer is preferably in the range of 0.001 to 0.1 parts by weight with respect to 100 parts by weight of the episulfide compound or the episulfide compound-containing mixture.
- the more preferable lower limit of the content of the storage stabilizer is 0.005 parts by weight and the more preferable upper limit is 0.05 parts by weight with respect to 100 parts by weight of the episulfide compound or the episulfide compound-containing mixture.
- the curable composition according to the present invention preferably further contains a curing accelerator.
- a curing accelerator By using a curing accelerator, the curing rate of the curable composition can be further increased.
- a hardening accelerator only 1 type may be used and 2 or more types may be used together.
- the curing accelerator examples include imidazole curing accelerators and amine curing accelerators. Of these, imidazole curing accelerators are preferred. In addition, an imidazole hardening accelerator or an amine hardening accelerator can be used also as an imidazole hardening agent or an amine hardening agent.
- imidazole curing accelerator examples include 2-methylimidazole, 2-ethyl-4-methylimidazole, 1-cyanoethyl-2-phenylimidazole, 1-cyanoethyl-2-phenylimidazolium trimellitate, 2,4-diamino- 6- [2′-Methylimidazolyl- (1 ′)]-ethyl-s-triazine or 2,4-diamino-6- [2′-methylimidazolyl- (1 ′)]-ethyl-s-triazine isocyanuric acid addition Thing etc. are mentioned.
- the preferable lower limit of the content of the curing accelerator is 0.5 parts by weight, the more preferable lower limit is 1 part by weight, and the preferable upper limit is 6 parts by weight, more preferably 100 parts by weight of the episulfide compound or the episulfide compound-containing mixture.
- the upper limit is 4 parts by weight.
- the curable composition according to the present invention preferably further contains a filler.
- a filler By using the filler, latent heat expansion of the cured product of the curable composition can be suppressed.
- a filler only 1 type may be used and 2 or more types may be used together.
- the filler include silica, aluminum nitride, and alumina.
- the filler is preferably filler particles.
- the average particle diameter of the filler particles is preferably in the range of 0.1 to 1.0 ⁇ m. When the average particle diameter of the filler particles is within the above range, latent heat expansion of the cured product of the curable composition can be further suppressed.
- Average particle diameter refers to a volume average diameter measured by a dynamic laser scattering method.
- the content of the filler is preferably in the range of 50 to 900 parts by weight with respect to 100 parts by weight of the episulfide compound or the episulfide compound-containing mixture.
- the filler content is within the above range, the latent thermal expansion of the cured product of the curable composition can be further suppressed.
- the curable composition according to the present invention may further contain a solvent, an ion scavenger or a silane coupling agent as necessary.
- the solvent is not particularly limited.
- the solvent include ethyl acetate, methyl cellosolve, toluene, acetone, methyl ethyl ketone, cyclohexane, n-hexane, tetrahydrofuran or diethyl ether.
- a solvent only 1 type may be used and 2 or more types may be used together.
- the silane coupling agent is not particularly limited.
- Examples of the silane coupling agent include N- (2-aminoethyl) -3-aminopropyltrimethoxysilane, N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane, and N- (2-amino).
- the ion scavenger is not particularly limited. Specific examples of the ion scavenger include aluminosilicate, hydrous titanium oxide, hydrous bismuth oxide, zirconium phosphate, titanium phosphate, hydrotalcite, ammonium molybdate, hexacyanozinc or ion exchange resin. Only one type of ion scavenger may be used, or two or more types may be used in combination.
- the curable composition according to the present invention may further contain a photocurable compound and a photopolymerization initiator so as to be cured by light irradiation.
- a photocurable compound and a photopolymerization initiator By using the photocurable compound and the photopolymerization initiator, the curable composition can be cured by light irradiation. Furthermore, the curable composition can be semi-cured to reduce the fluidity of the curable composition.
- the photocurable compound is not particularly limited.
- a (meth) acrylic resin or a cyclic ether group-containing resin is preferably used.
- the (meth) acrylic resin indicates a methacrylic resin and an acrylic resin.
- an ester compound obtained by reacting (meth) acrylic acid and a compound having a hydroxyl group an epoxy (meth) acrylate obtained by reacting (meth) acrylic acid and an epoxy compound, or Urethane (meth) acrylate obtained by reacting a (meth) acrylic acid derivative having a hydroxyl group with isocyanate is preferably used.
- the ester compound obtained by reacting the above (meth) acrylic acid with a compound having a hydroxyl group is not particularly limited.
- the ester compound any of a monofunctional ester compound, a bifunctional ester compound, and a trifunctional or higher functional ester compound can be used.
- the photocurable compound preferably contains a light and thermosetting compound (hereinafter also referred to as a partially (meth) acrylated epoxy resin) having at least one kind of epoxy group and a (meth) acryl group.
- a light and thermosetting compound hereinafter also referred to as a partially (meth) acrylated epoxy resin
- the partial (meth) acrylated epoxy resin can be obtained, for example, by reacting an epoxy resin and (meth) acrylic acid in the presence of a basic catalyst according to a conventional method. It is preferable that 20% or more of the epoxy groups are converted to (meth) acryloyl groups (conversion rate) and partially (meth) acrylated. More preferably, 50% of the epoxy groups are converted to (meth) acryloyl groups.
- the (meth) acryloyl refers to acryloyl and methacryloyl.
- the preferable lower limit of the content of the partially (meth) acrylated epoxy resin is 0.1% by weight and the more preferable lower limit is 0.1% in 100% by weight of the curable compound. 5 wt%, the preferred upper limit is 2 wt%, and the more preferred upper limit is 1.5 wt%.
- epoxy (meth) acrylate examples include bisphenol type epoxy (meth) acrylate, cresol novolac type epoxy (meth) acrylate, carboxylic acid anhydride-modified epoxy (meth) acrylate, and phenol novolac type epoxy (meth) acrylate. .
- Examples of the epoxy compound used for obtaining the epoxy (meth) acrylate, and commercial products of the epoxy compound include bisphenol A type epoxy resins such as Epicoat 828EL and Epicoat 1004 (both manufactured by Japan Epoxy Resin Co., Ltd.), and Epicoat.
- Epicoat 4004 (both manufactured by Japan Epoxy Resin Co., Ltd.) and other bisphenol F type epoxy resins, Epicron EXA1514 (manufactured by DIC Co., Ltd.), bisphenol S type epoxy resins, 2'-diallyl bisphenol A type epoxy resin, hydrogenated bisphenol type epoxy resin such as Epicron EXA7015 (manufactured by DIC), propylene oxide-added bisphenol A type epoxy such as EP-4000S (manufactured by ADEKA) Fat, Resorcinol type epoxy resin such as EX-201 (manufactured by Nagase ChemteX), biphenyl type epoxy resin such as Epicoat YX-4000H (manufactured by Japan Epoxy Resin), sulfide type such as YSLV-50TE (manufactured by Toto Kasei) Epoxy resin, ether type epoxy resin such as YSLV-80DE (manufactured by Toto Kasei Co., Ltd.),
- Examples of commercially available products of the epoxy (meth) acrylate include Evecryl 3700, Evekril 3600, Evekril 3701, Evekril 3703, Evekrill 3200, Evekrill 3201, Evekril 3600, Evekril 3412, Evekril 860, Evekril RDX63182, Evecril 3800 (all manufactured by Daicel UCB), EA-1020, EA-1010, EA-5520, EA-5323, EA-CHD and EMA-1020 (all manufactured by Shin-Nakamura Chemical Co., Ltd.), Epoxy ester M- 600A, epoxy ester 40EM, epoxy ester 70PA, epoxy ester 200PA, epoxy ester 80MFA, epoxy ester 3002M, epoxy Steal 3002A, Epoxy ester 1600A, Epoxy ester 3000M, Epoxy ester 3000A, Epoxy ester 200EA and Epoxy ester 400EA (all manufactured by Kyoeisha Chemical Co., Ltd.), Denacol acrylate DA
- the photocurable compound may be a crosslinkable compound or a non-crosslinkable compound.
- crosslinkable compound examples include 1,4-butanediol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, 1,9-nonanediol di (meth) acrylate, (poly ) Ethylene glycol di (meth) acrylate, (poly) propylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, pentaerythritol di (meth) acrylate, glycerol methacrylate acrylate, pentaerythritol tri (meth) acrylate, tri Examples include methylolpropane trimethacrylate, allyl (meth) acrylate, vinyl (meth) acrylate, divinylbenzene, polyester (meth) acrylate, and urethane (meth) acrylate.
- non-crosslinkable compound examples include ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, t-butyl (meth) ) Acrylate, pentyl (meth) acrylate, hexyl (meth) acrylate, heptyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, n-octyl (meth) acrylate, isooctyl (meth) acrylate, nonyl (meth) acrylate, decyl Examples include (meth) acrylate, undecyl (meth) acrylate, dodecyl (meth) acrylate, tridecyl (meth) acrylate, and tetradecyl (meth)
- the preferred lower limit of the content of the photocurable compound is 1 part by weight and more preferred lower limit with respect to 100 parts by weight of the episulfide compound or episulfide compound-containing mixture. Is 10 parts by weight, more preferably the lower limit is 50 parts by weight, the preferred upper limit is 10,000 parts by weight, the more preferred upper limit is 1000 parts by weight, and the more preferred upper limit is 500 parts by weight.
- the photopolymerization initiator is not particularly limited. As for the said photoinitiator, only 1 type may be used and 2 or more types may be used together.
- the photopolymerization initiator examples include acetophenone photopolymerization initiator, benzophenone photopolymerization initiator, thioxanthone, ketal photopolymerization initiator, halogenated ketone, acyl phosphinoxide, or acyl phosphonate.
- Specific examples of the acetophenone photopolymerization initiator include 4- (2-hydroxyethoxy) phenyl (2-hydroxy-2-propyl) ketone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, methoxy Examples include acetophenone, 2,2-dimethoxy-1,2-diphenylethane-1-one, and 2-hydroxy-2-cyclohexylacetophenone.
- Specific examples of the ketal photopolymerization initiator include benzyl dimethyl ketal.
- the content of the photopolymerization initiator is not particularly limited.
- the preferable lower limit of the content of the photopolymerization initiator is 0.1 parts by weight, the more preferable lower limit is 0.2 parts by weight, and the more preferable lower limit is 2 parts by weight with respect to 100 parts by weight of the photocurable composition.
- the upper limit is 10 parts by weight, and the more preferable upper limit is 5 parts by weight.
- the curable resin composition may further contain an epoxy compound other than the epoxy compound represented by the formula (11-1), (12-1), (13), (11) or (12). Good.
- this epoxy compound the epoxy compound used in order to obtain the above-mentioned epoxy (meth) acrylate can be used.
- the epoxy compound represented by the formula (11-1), (12-1), (13), (11) or (12) and the other epoxy compound the epoxy compound represented by the formula (11-1), (12-1), (13), (11) or (12) and the other epoxy compound.
- the preferable lower limit of the content of the episulfide compound is 10% by weight, the more preferable lower limit is 25% by weight, the preferable upper limit is 100% by weight, and the more preferable upper limit is 50% by weight.
- the curable composition concerning this invention can be used for adhesion
- the curable composition may be a paste-like adhesive or a film-like adhesive.
- the method for processing the curable composition according to the present invention into a film adhesive is not particularly limited. For example, after applying a curable composition to a substrate such as a release paper and processing it into a film-like adhesive, or adding a solvent to the curable composition and applying to a substrate such as a release paper, Examples thereof include a method of volatilizing the solvent at a temperature lower than the activation temperature of the curing agent and processing it into a film-like adhesive.
- a method of curing the curable composition according to the present invention a method of heating the curable composition, a method of heating the curable composition irradiated with light after irradiating the curable composition with light, or The method etc. which heat a curable composition simultaneously with irradiating light to a curable composition are mentioned.
- the heating temperature for curing the curable composition according to the present invention is preferably in the range of 160 to 250 ° C., and more preferably in the range of 160 to 200 ° C. Since the curable composition can be quickly cured at a low temperature, the amount of energy required for heating can be reduced.
- a curable composition containing a conventional epoxy resin has a long curing time when the heating temperature is 200 ° C. or less. For example, if the heating temperature is 200 ° C., the curing time exceeds 10 seconds. In contrast, the curable composition according to the present invention can be cured in a short time even when the heating temperature is 200 ° C. or lower.
- the light source used when irradiating the curable composition with light is not particularly limited.
- the light source include a light source having a sufficient light emission distribution at a wavelength of 420 nm or less.
- Specific examples of the light source include a low pressure mercury lamp, a medium pressure mercury lamp, a high pressure mercury lamp, an ultrahigh pressure mercury lamp, a chemical lamp, a black light lamp, a microwave excitation mercury lamp, a metal halide lamp, and the like.
- a chemical lamp is preferable.
- the chemical lamp efficiently emits light in the active wavelength region of the photopolymerization initiator and emits less light in the light absorption wavelength region of the composition components other than the photopolymerization initiator.
- light can efficiently reach the photocuring component present in the composition.
- the light irradiation intensity in the wavelength region of 365 nm to 420 nm is preferably in the range of 0.1 to 100 mW / cm 2 .
- the curable composition according to the present invention when the curable composition according to the present invention further contains conductive particles, the curable composition can be used as an anisotropic conductive material.
- the conductive particles electrically connect, for example, electrodes between a circuit board and a semiconductor chip.
- the conductive particles are not particularly limited as long as at least the surface has conductivity.
- Examples of the conductive particles include conductive particles whose surfaces are coated with a metal layer, such as organic particles, inorganic particles, organic-inorganic hybrid particles, or metal particles, or metal particles that are substantially composed of only metal. It is done.
- the metal layer is not particularly limited. Examples of the metal layer include a gold layer, a silver layer, a copper layer, a nickel layer, a palladium layer, or a metal layer containing tin.
- the content of the conductive particles is not particularly limited.
- the preferred lower limit of the content of the conductive particles is 0.1 parts by weight, more preferably the lower limit is 0.5 parts by weight, and the preferred upper limit is 10 parts by weight with respect to 100 parts by weight of the episulfide compound or the episulfide compound-containing mixture. A more preferred upper limit is 5 parts by weight.
- the viscosity (25 ° C.) of the curable composition is preferably in the range of 20000 to 100,000 mPa ⁇ s. If the viscosity is too low, the conductive particles may settle. If the viscosity is too high, the conductive particles may not be sufficiently dispersed.
- the curable composition concerning this invention can be used for adhere
- the anisotropic conductive material includes an anisotropic conductive paste, an anisotropic conductive ink, and an anisotropic conductive adhesive. It can be used as an adhesive, an anisotropic conductive film, or an anisotropic conductive sheet.
- the anisotropic conductive material is used as a film-like adhesive such as an anisotropic conductive film or anisotropic conductive sheet
- the film-like adhesive containing the conductive particles contains conductive particles.
- the anisotropic conductive material is preferably used for obtaining a connection structure in which the first and second connection target members are electrically connected.
- FIG. 1 schematically shows a cross-sectional view of an example of a connection structure using a curable composition according to an embodiment of the present invention.
- connection structure shown in FIG. 1 includes a first connection target member 2, a second connection target member 4, and a connection part 3 connecting the first and second connection target members 2 and 4. .
- the connection part 3 is formed by hardening the curable composition containing the electroconductive particle 5, ie, an anisotropic conductive material.
- a plurality of electrodes 2 b are provided on the upper surface 2 a of the first connection target member 2.
- a plurality of electrodes 4 b are provided on the lower surface 4 a of the second connection target member 4.
- the electrode 2b and the electrode 4b are electrically connected by one or a plurality of conductive particles 5. Therefore, the first and second connection target members 2 and 4 are electrically connected by the conductive particles 5.
- connection structure an electronic component chip such as a semiconductor chip, a capacitor chip or a diode chip is mounted on a circuit board, and the electrode of the electronic component chip is connected to an electrode on the circuit board.
- Examples include electrically connected structures.
- a circuit board various printed circuit boards, such as various printed circuit boards, such as a flexible printed circuit board, a glass substrate, or a board
- the first and second connection target members are preferably electronic components or circuit boards.
- connection structure is not particularly limited.
- the anisotropic conductive material is disposed between a first connection target member such as an electronic component or a circuit board and a second connection target member such as an electronic component or a circuit board. And after obtaining a laminated body, the method etc. which heat and pressurize this laminated body are mentioned.
- the said curable composition does not need to contain electroconductive particle.
- the curable composition is used to bond and connect the first and second connection target members without electrically connecting the first and second connection target members.
- Example 1 (1) Preparation of episulfide compound-containing mixture In a 2 L vessel equipped with a stirrer, a cooler and a thermometer, ethanol 250 mL, pure water 250 mL, and potassium thiocyanate 20 g were added to dissolve potassium thiocyanate, and the vessel A first solution was prepared inside. Thereafter, the temperature in the container was kept within the range of 20 to 25 ° C.
- a second solution in which 20 g of potassium thiocyanate was dissolved in a solution containing 100 mL of pure water and 100 mL of ethanol was prepared.
- the prepared second solution was added to the obtained epoxy compound-containing solution at a rate of 5 mL / min, and then stirred for 30 minutes.
- a second solution prepared by dissolving 20 g of potassium thiocyanate in a solution containing 100 mL of pure water and 100 mL of ethanol is further prepared, and the second solution is further added at a rate of 5 mL / min. Stir for minutes. Thereafter, the temperature in the container was cooled to 10 ° C., and stirred for 2 hours to be reacted.
- magnesium sulfate was added to the supernatant liquid to which toluene was added and stirred for 5 minutes. After stirring, magnesium sulfate was removed with a filter paper to separate the solution. The remaining solvent was removed by drying the separated solution under reduced pressure at 80 ° C. using a vacuum dryer. In this way, an episulfide compound-containing mixture was obtained.
- the resulting episulfide compound-containing mixture was subjected to 1 H-NMR measurement using chloroform as a solvent.
- the signal in the 6.5 to 7.5 ppm region indicating the presence of the epoxy group decreased, and the signal appeared in the 2.0 to 3.0 ppm region indicating the presence of the episulfide group.
- the episulfide compound-containing mixture contained 70% by weight of resorcinol diglycidyl ether and 30% by weight of the episulfide compound represented by the above formula (1B). did.
- curable composition 33 parts by weight of the resulting episulfide compound-containing mixture, 20 parts by weight of pentaerythritol tetrakis-3-mercaptopropionate as a curing agent, and diphenyl mono (tridecyl) as a phosphite ) 0.01 part by weight of phosphite, 1 part by weight of 2-ethyl-4-methylimidazole as a curing accelerator, 20 parts by weight of silica having an average particle diameter of 0.25 ⁇ m as filler, and an average particle diameter of 0.5 ⁇ m 20 parts by weight of alumina and 2 parts by weight of conductive particles having an average particle diameter of 3 ⁇ m are added and stirred for 5 minutes at 2000 rpm using a planetary stirrer to obtain a curable composition as an anisotropic conductive paste. It was.
- the conductive particles used are conductive particles having a metal layer in which a nickel plating layer is formed on the surface of divinyl
- Example 2 In the same manner as in Example 1, except that pentaerythritol tetrakis-3-mercaptopropionate and diphenylmono (tridecyl) phosphite were not added during the preparation of the curable composition, anisotropic conductive properties were obtained. A curable composition as a paste was obtained.
- the conductive particles used are conductive particles having a metal layer in which a nickel plating layer is formed on the surface of divinylbenzene resin particles and a gold plating layer is formed on the surface of the nickel plating layer. .
- the curable composition as an anisotropic conductive paste was obtained by filtering the obtained compound with a nylon filter paper (pore diameter: 10 ⁇ m).
- the obtained curable composition was applied on the transparent glass substrate so as to have a thickness of 30 ⁇ m to form a curable composition layer.
- the semiconductor chip was laminated on the curable composition layer so that the electrodes face each other and are connected. Thereafter, while adjusting the temperature of the heating head so that the temperature of the curable composition layer becomes 185 ° C., the heating head is placed on the upper surface of the semiconductor chip, the curable composition layer is cured at 185 ° C., and the connection structure Got.
- the time until the curable composition layer was cured by heating was measured.
- Example 3 In preparing the curable composition, 5 parts by weight of epoxy acrylate (“EBECRYL 3702” manufactured by Daicel-Cytec) and an acylphosphine oxide compound (“DAROCUR TPO” manufactured by Ciba Japan) as a photopolymerization initiator 0 A curable composition as an anisotropic conductive paste was obtained in the same manner as in Example 1 except that 1 part by weight was further added.
- epoxy acrylate (“EBECRYL 3702” manufactured by Daicel-Cytec) and an acylphosphine oxide compound (“DAROCUR TPO” manufactured by Ciba Japan)
- Example 4 In preparing the curable composition, 5 parts by weight of urethane acrylate (“EBECRYL8804” manufactured by Daicel-Cytec) and an acylphosphine oxide compound (“DAROCUR TPO” manufactured by Ciba Japan) as a photopolymerization initiator 0
- EBECRYL8804 urethane acrylate
- DAROCUR TPO acylphosphine oxide compound manufactured by Ciba Japan
- the obtained curable composition was applied on the upper surface of the transparent glass substrate so as to have a thickness of 30 ⁇ m, thereby forming a curable composition layer. Furthermore, while applying the anisotropic conductive paste, the ultraviolet ray at 420 nm was applied to the curable composition layer using an ultraviolet irradiation lamp so that the light irradiation intensity was 50 mW / cm 2, and the curable composition was obtained by photopolymerization. The material layer was B-staged. The time T from coating to when the coated curable composition layer was in contact with the transparent glass substrate until the curable composition layer was irradiated with light was 0.5 seconds. It was.
- the semiconductor chip was laminated on the upper surface of the B-staged curable composition layer so that the electrodes faced and connected. Then, while adjusting the temperature of the head so that the temperature of the curable composition layer is 185 ° C., a pressure heating head is placed on the upper surface of the semiconductor chip and a pressure of 10 kg / cm 2 is applied to form a B stage. The cured curable composition layer was completely cured at 185 ° C. to obtain a connection structure. When obtaining this connection structure, the time until the curable composition layer was cured by heating was measured.
- Examples 5 to 24 (1) Preparation of episulfide compound or episulfide compound-containing mixture
- the episulfide compound represented by the above formula (1), (2) or (3) and the above formula (11), (12) or (13) An episulfide compound or an episulfide compound-containing mixture containing the epoxy compound at the following content was prepared in the same manner as in Example 1.
- the episulfide compound or episulfide compound-containing mixture of each example was obtained by appropriately adjusting the amount of potassium thiocyanate used and adjusting the conversion rate.
- Example 25 In preparation of the curable composition, 33 parts by weight of the episulfide compound-containing mixture used in Example 1, 10 parts by weight of the episulfide compound-containing mixture used in Example 1, and the episulfide compound-containing mixture used in Example 9 A curable composition was obtained in the same manner as in Example 1 except that the content was changed to 20 parts by weight.
- Example 26 In preparing the curable composition, 33 parts by weight of the episulfide compound-containing mixture used in Example 1 was changed to 20 parts by weight of the episulfide compound-containing mixture used in Example 1 and 10 parts by weight of resorcinol glycidyl ether. Except for this, a curable composition was obtained in the same manner as in Example 1.
- Example 27 In preparation of the curable composition, 33 parts by weight of the episulfide compound-containing mixture used in Example 1 was replaced with 20 parts by weight of the episulfide compound-containing mixture used in Example 1 and 10 parts by weight of bisphenol A glycidyl ether. Except having changed, it carried out similarly to Example 1, and obtained the curable composition.
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Abstract
Description
本発明に係るエピスルフィド化合物含有混合物のある特定の局面では、上記エポキシ化合物は、下記式(11)又は(12)で表されるエポキシ化合物である。
本発明に係るエピスルフィド化合物は、下記式(1-1)、(2-1)又は(3)で表される構造を有する。下記式(1-1)において、ベンゼン環に結合している6つの基の結合部位は特に限定されない。下記式(2-1)において、ナフタレン環に結合している8つの基の結合部位は特に限定されない。
本発明に係るエピスルフィド化合物含有混合物は、上記式(1-1)、(2-1)又は(3)で表されるエピスルフィド化合物と、下記式(11-1)、(12-1)又は(13)で表されるエポキシ化合物とを含有する。下記式(11-1)において、ベンゼン環に結合している6つの基の結合部位は特に限定されない。下記式(12-1)において、ナフタレン環に結合している8つの基の結合部位は特に限定されない。
本発明に係る硬化性組成物は、本発明のエピスルフィド化合物と、硬化剤とを含有する。または、本発明に係る硬化性組成物は、本発明のエピスルフィド化合物含有混合物と、硬化剤とを含有する。すなわち、本発明に係る硬化性組成物は、本発明のエピスルフィド化合物又はエピスルフィド化合物含有混合物と、硬化剤とを含有する。硬化剤は1種のみが用いられてもよく、2種以上が併用されてもよい。
上記ポリチオール硬化剤としては、特に限定されないが、トリメチロールプロパン トリス-3-メルカプトプロピオネート、ペンタエリスリトール テトラキス-3-メルカプトプロピオネート又はジペンタエリスリトール ヘキサ-3-メルカプトプロピオネート等が挙げられる。
上記アセトフェノン光重合開始剤の具体例としては、4-(2-ヒドロキシエトキシ)フェニル(2-ヒドロキシ-2-プロピル)ケトン、2-ヒドロキシ-2-メチル-1-フェニルプロパン-1-オン、メトキシアセトフェノン、2,2-ジメトキシ-1,2-ジフェニルエタン-1-オン、又は2-ヒドロキシ-2-シクロヘキシルアセトフェノン等が挙げられる。上記ケタール光重合開始剤の具体例としては、ベンジルジメチルケタール等が挙げられる。
本発明に係る硬化性組成物をフィルム状の接着剤に加工する方法は特に限定されない。例えば、硬化性組成物を離型紙等の基材に塗工し、フィルム状の接着剤に加工する方法、又は硬化性組成物に溶剤を加え、離型紙等の基材に塗工した後、上記硬化剤の活性温度よりも低い温度で溶剤を揮発させ、フィルム状の接着剤に加工する方法等が挙げられる。
本発明に係る硬化性組成物は、様々な接続対象部材を接着するのに使用できる。
(1)エピスルフィド化合物含有混合物の調製
攪拌機、冷却機及び温度計を備えた2Lの容器内に、エタノール250mLと、純水250mLと、チオシアン酸カリウム20gとを加え、チオシアン酸カリウムを溶解させ、容器内に第1の溶液を調製した。その後、容器内の温度を20~25℃の範囲内に保持した。
得られたエピスルフィド化合物含有混合物33重量部に、硬化剤としてのペンタエリスリトール テトラキス-3-メルカプトプロピオネート20重量部と、亜リン酸エステルとしてのジフェニルモノ(トリデシル)ホスファイト0.01重量部と、硬化促進剤としての2-エチル-4-メチルイミダゾール1重量部と、フィラーとしての平均粒子径0.25μmのシリカ20重量部及び平均粒子径0.5μmのアルミナ20重量部と、平均粒子径3μmの導電性粒子2重量部とを添加し、遊星式攪拌機を用いて2000rpmで5分間攪拌することにより、異方性導電ペーストとしての硬化性組成物を得た。なお、用いた導電性粒子は、ジビニルベンゼン樹脂粒子の表面にニッケルめっき層が形成されており、かつ該ニッケルめっき層の表面に金めっき層が形成されている金属層を有する導電性粒子である。
硬化性組成物の調製の際に、ペンタエリスリトール テトラキス-3-メルカプトプロピオネートと、ジフェニルモノ(トリデシル)ホスファイトとを添加しなかったこと以外は実施例1と同様にして、異方性導電ペーストとしての硬化性組成物を得た。
ビスフェノールA型エポキシ樹脂100重量部と、硬化剤としての1,2-ジメチルイミダゾール5重量部とを添加し、遊星式攪拌機を用いて2000rpmで5分間攪拌することにより、混合物を得た。
(1)硬化時間
L/Sが10μm/10μmのITO電極パターンが上面に形成された透明ガラス基板を用意した。また、L/Sが10μm/10μmの銅電極パターンが下面に形成された半導体チップを用意した。
上記硬化時間の評価で得られた接続構造体において、硬化性組成物層により形成された硬化物層にボイドが生じているか否かを、透明ガラス基板の下面側から目視により観察した。
硬化性組成物の調製の際に、エポキシアクリレート(ダイセル・サイテック社製「EBECRYL3702」)5重量部と、光重合開始剤としてのアシルホスフィンオキサイド系化合物(チバ・ジャパン社製「DAROCUR TPO」)0.1重量部とをさらに添加したこと以外は実施例1と同様にして、異方性導電ペーストとしての硬化性組成物を得た。
硬化性組成物の調製の際に、ウレタンアクリレート(ダイセル・サイテック社製「EBECRYL8804」)5重量部と、光重合開始剤としてのアシルホスフィンオキサイド系化合物(チバ・ジャパン社製「DAROCUR TPO」)0.1重量部とをさらに添加したこと以外は実施例1と同様にして、異方性導電ペーストとしての硬化性組成物を得た。
(1)硬化時間
実施例1,2及び比較例1の評価で用いた透明ガラス基板と半導体チップとを用意した。
上記硬化時間の評価で得られた接続構造体において、実施例1,2及び比較例1と同様にして、ボイドの有無を評価した。
(1)エピスルフィド化合物、又はエピスルフィド化合物含有混合物の調製
上記式(1)、(2)又は(3)で表されるエピスルフィド化合物と、上記式(11)、(12)又は(13)で表されるエポキシ化合物とを下記の含有量で含むエピスルフィド化合物又はエピスルフィド化合物含有混合物を、実施例1と同様の手順により調製した。各実施例のエピスルフィド化合物又はエピスルフィド化合物含有混合物は、チオシアン酸カリウムの使用量を適宜調整し、転化率を調整することにより得た。
硬化性組成物の調製の際に、実施例1で用いたエピスルフィド化合物含有混合物33重量部を、下記の表3~5に示すエピスルフィド化合物又はエピスルフィド化合物含有混合物に変更したこと以外は実施例1と同様にして、異方性導電ペーストとしての硬化性組成物を得た。
硬化性組成物の調製の際に、実施例1で用いたエピスルフィド化合物含有混合物33重量部を、実施例1で用いたエピスルフィド化合物含有混合物10重量部と、実施例9で用いたエピスルフィド化合物含有混合物20重量部とに変更したこと以外は実施例1と同様にして、硬化性組成物を得た。
硬化性組成物の調製の際に、実施例1で用いたエピスルフィド化合物含有混合物33重量部を、実施例1で用いたエピスルフィド化合物含有混合物20重量部と、レゾルシノールグリシジルエーテル10重量部とに変更したこと以外は実施例1と同様にして、硬化性組成物を得た。
硬化性組成物の調製の際に、実施例1で用いたエピスルフィド化合物含有混合物33重量部を、実施例1で用いたエピスルフィド化合物含有混合物20重量部と、ビスフェノールA型グリシジルエーテル10重量部とに変更したこと以外は実施例1と同様にして、硬化性組成物を得た。
実施例1,2及び比較例1の評価と同様にして、硬化時間及びボイドの有無を評価した。
2…第1の接続対象部材
2a…上面
2b…電極
3…接続部
4…第2の接続対象部材
4a…下面
4b…電極
5…導電性粒子
Claims (14)
- 下記式(1-1)、(2-1)又は(3)で表される構造を有するエピスルフィド化合物。
- 下記式(1)又は(2)で表される構造を有する、請求項1に記載のエピスルフィド化合物。
- 請求項1~3のいずれか1項に記載のエピスルフィド化合物と、下記式(11-1)、(12-1)又は(13)で表されるエポキシ化合物とを含有する、エピスルフィド化合物含有混合物。
- 前記エポキシ化合物が、下記式(11)又は(12)で表されるエポキシ化合物である、請求項4に記載のエピスルフィド化合物含有混合物。
- 請求項4~6のいずれか1項に記載のエピスルフィド化合物含有混合物の製造方法であって、
チオシアン酸塩を含む第1の溶液に、前記式(11-1)、(12-1)又は(13)で表されるエポキシ化合物又は該エポキシ化合物を含む溶液を連続的又は断続的に添加した後、チオシアン酸塩を含む第2の溶液を連続的又は断続的にさらに添加することにより、前記エポキシ化合物の一部のエポキシ基をエピスルフィド基に変換する、エピスルフィド化合物含有混合物の製造方法。 - 前記エポキシ化合物又は該エポキシ化合物を含む溶液として、前記式(11)又は(12)で表されるエポキシ化合物又は該エポキシ化合物を含む溶液を用いる、請求項7に記載のエピスルフィド化合物含有混合物の製造方法。
- 請求項1~3のいずれか1項に記載のエピスルフィド化合物と、硬化剤とを含有する、硬化性組成物。
- 請求項4~6のいずれか1項に記載のエピスルフィド化合物含有混合物と、硬化剤とを含有する、硬化性組成物。
- 光硬化性化合物と、光重合開始剤とをさらに含有する、請求項9又は10に記載の硬化性組成物。
- 導電性粒子をさらに含有する、請求項9~11のいずれか1項に記載の硬化性組成物。
- 第1の接続対象部材と、第2の接続対象部材と、該第1,第2の接続対象部材を接続している接続部とを備え、
前記接続部が、請求項9~11のいずれか1項に記載の硬化性組成物により形成されている接続構造体。 - 前記硬化性組成物が導電性粒子を含有し、
前記第1,第2の接続対象部材が、前記導電性粒子により電気的に接続されている、請求項13に記載の接続構造体。
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Also Published As
Publication number | Publication date |
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KR20110079612A (ko) | 2011-07-07 |
TWI491601B (zh) | 2015-07-11 |
KR101619558B1 (ko) | 2016-05-10 |
JP5530392B2 (ja) | 2014-06-25 |
TW201020243A (en) | 2010-06-01 |
CN105175727A (zh) | 2015-12-23 |
JPWO2010035459A1 (ja) | 2012-02-16 |
JP2011173901A (ja) | 2011-09-08 |
JP4729128B2 (ja) | 2011-07-20 |
CN102164907A (zh) | 2011-08-24 |
JP4730695B2 (ja) | 2011-07-20 |
JP2011105942A (ja) | 2011-06-02 |
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