Complex

Abstract

A first object of the present invention is to provide an article in which a material does not protrude from an end portion of a laminate. A second object of the present invention is to provide a composite capable of exhibiting a plurality of functions in both the thickness direction and the plane direction.SOLUTION: A composite in which a first composition is completely covered with a second composition containing a second resin, wherein the first composition contains a first resin having a softening point of 100 °C. or lower, the shortest dimension of the composite is 5 μm or more, and the first and second compositions have different functions. A composite comprising a first composition and a second composition that is in contact with the first composition and at least partially covers the first composition, wherein in a first direction in which the first composition extends, at least one portion P where only the first composition is present is present in a first cross section of the composite orthogonal to the first direction, and the first and second compositions have different functions.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a composite. [Background technology]

[0002] Background Art 1 For example, Patent Document 1 discloses a method for manufacturing a solar cell module using a laminate made of multiple members including a sealing film. Patent Document 1 discloses that the sealing film melts and flows when pressurized and heated, causing it to protrude from the edge of the laminate, resulting in problems such as reduced power generation efficiency and appearance characteristics.

[0003] Second Background Art In laminates having a structure in which multiple layers are laminated, such as double-sided pressure-sensitive adhesive tapes, the functions of the layers are usually separated. For example, Patent Document 2 discloses a laminate film in which an antistatic layer (B) and a heat-sealable layer (C) are separate layers.

[0004] In such laminates, different layers exhibit different functions in the thickness direction of the laminate, but generally have the same function in the plane direction of the laminate. That is, in the laminate film of Patent Document 2, the antistatic layer exhibits only the antistatic function, and the heat-sealable layer exhibits only the heat-sealability. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-245375 [Patent Document 2] International Publication No. 2019 / 172340 Summary of the Invention [Problem to be solved by the invention]

[0006] As mobile devices, home appliances, automobiles, and other products become more sophisticated, there is a demand for finer processing and for these products to have multiple functions in a small space.

[0007] As in the first background art, in a laminate, even if the material of the inner layer is a highly fluid material, the material may protrude from the edge, even if the inner layer is not located on the surface in the stacking direction of the laminate. The protruding material of the inner layer may impair the original function of the laminate or may adhere to the surrounding area and cause contamination.

[0008] Therefore, a first object of the present invention is to provide an article that has multiple functions and does not have material protruding from the edges.

[0009] Regarding the second background art, there has been a demand for a laminate that can exhibit multiple functions in both the thickness direction and the surface direction, but no laminate with such a configuration exists.

[0010] Therefore, a second object of the present invention is to provide a composite that can exhibit multiple functions in both the thickness direction and the surface direction. [Means for solving the problem]

[0011] A first aspect of the present invention is a composite in which a first composition is completely coated with a second composition, the first composition comprises a first resin; the second composition comprises a second resin; The softening point of the first resin is 100°C or less, The shortest distance dimension of the complex is 5 μm or more, The first composition and the second composition are a composite having different functions, which can prevent the material from spilling out from the edge.

[0012] A second aspect of the present invention provides a composition comprising a first composition and a second composition in contact with the first composition and at least partially covering the first composition, the first composition comprises a first resin; the second composition comprises a second resin; In a first direction in which the first composition extends, there is at least one portion P in which only the first composition is present in a first cross section of the composite perpendicular to the first direction, The composite has the first composition and the second composition each having a different function, allowing the composite to exhibit multiple functions in both the thickness direction and the plane direction.

[0013] In one embodiment of the complex of the present invention, the function is selected from the group A to G below: Group A: at least one selected from the group consisting of conductive, antistatic, electromagnetic wave shielding, radio wave absorption, and magnetic expression; Group B: at least one selected from the group consisting of thermal conduction, heat insulation, heat storage, and flame retardancy; Group C: at least one selected from the group consisting of light-blocking, coloring, light-guiding, light-refractive, light-storing, light-emitting, light-absorbing, photocatalytic, light-reflecting, light-collecting, sound-blocking, and vibration-proofing; Group D: at least one selected from the group consisting of hardening, decomposition, shrinkage, reinforcement, and stretch peeling; Group E: Dielectric properties; Group F: at least one selected from the group consisting of pressure-sensitive adhesives, hot-melt adhesives, thermal adhesives, and photocurable adhesives; Group G: at least one selected from the group consisting of antibacterial, antifouling, contaminant removal, sustained drug release, bioactive action, and environmental response; It is one of the groups.

[0014] In one embodiment of the composite of the present invention, at least one of the first composition and the second composition comprises an additive.

[0015] In one embodiment of the composite of the present invention, the first resin has a glass transition temperature of 50° C. or lower.

[0016] In one embodiment of the composite of the present invention, the viscosity I of the first composition at 180° C. is 500,000 mPa·s or less.

[0017] In one embodiment of the composite of the present invention, the viscosity O of the second composition at 180°C is higher than the viscosity I.

[0018] In one embodiment of the composite of the present invention, the first resin is a thermosetting resin or a UV-curable resin, and the softening point of the first resin before curing is 100° C. or lower.

[0019] In one embodiment of the composite of the present invention, the first resin is a thermosetting resin or a UV-curable resin, and the glass transition temperature of the first resin before curing is 50° C. or lower.

[0020] In one embodiment of the complex of the present invention, the first composition further comprises microparticles.

[0021] In one embodiment of the composite of the present invention, the second composition is a pressure sensitive adhesive or adhesive.

[0022] In one embodiment of the composite of the present invention, the pressure sensitive adhesive or adhesive is a hot melt type, a heat curing type, or a UV curing type.

[0023] In one embodiment of the conjugate of the second aspect of the invention, said moieties P are present at both ends of said conjugate in said first direction.

[0024] In one embodiment of the complex of the second aspect of the invention, said moiety P is present at one end of said complex in said first direction.

[0025] In one embodiment of the complex of the second aspect of the present invention, the moiety P is present at a location other than both ends of the complex in the first direction.

[0026] In one embodiment of the complex of the second aspect of the present invention, said moiety P is present at both ends and at locations other than both ends of said complex in said first direction.

[0027] In one embodiment of the complex of the second aspect of the present invention, said moiety P is present at one end and at a location other than both ends of said complex in said first direction.

[0028] In one embodiment of the composite of the second aspect of the present invention, the contour of the second composition in the first cross section and the contour of the first composition in the first cross section in the portion P are the same.

[0029] In one embodiment of the composite of the second aspect of the present invention, the second composition in the first cross section covers the entire periphery of the first composition.

[0030] In one embodiment of the composite of the second aspect of the present invention, the second composition in the first cross section covers 40% to less than 100% of the periphery of the first composition.

[0031] In one embodiment of the composite according to the second aspect of the present invention, the softening point of the first resin is 100°C or lower.

[0032] In one embodiment of the composite of the second aspect of the present invention, the width of the composite is 5 μm or more. [Effects of the Invention]

[0033] According to the first aspect of the present invention, it is possible to provide a composite that can prevent material from protruding from the edge and can perform multiple functions.

[0034] Furthermore, according to the second aspect of the present invention, it is possible to provide a composite that can exhibit multiple functions in both the thickness direction and the surface direction. [Brief explanation of the drawings]

[0035] [Figure 1] FIG. 1 is a schematic cross-sectional view of an example of the composite of the present invention. [Figure 2] FIG. 2 is a schematic cross-sectional view of another example of the composite of the present invention. [Figure 3] FIG. 3 is a plan view schematically showing an example of the composite of the present invention. [Figure 4] FIG. 4 is a cross-sectional view schematically showing an example of the composite of FIG. [Figure 5] FIG. 5 is a plan view schematically showing another example of the composite of the present invention. [Figure 6] FIG. 6 is a cross-sectional view schematically showing an example of the composite of FIG. [Figure 7] FIG. 7 is a plan view schematically showing another example of the composite of the present invention. [Figure 8] FIG. 8 is a cross-sectional view schematically showing an example of the composite of FIG. [Figure 9] FIG. 9 is a plan view schematically showing another example of the composite of the present invention. [Figure 10] FIG. 10 is a cross-sectional view schematically showing an example of the composite of FIG. [Figure 11] FIG. 11 is a plan view schematically showing another example of the composite of the present invention. [Figure 12] FIG. 12 is a plan view schematically showing another example of the composite of the present invention. [Figure 13] FIG. 13 is a cross-sectional view that schematically shows a conventional laminate having a typical two-layer structure. [Figure 14] FIG. 14 is a perspective view schematically showing an example of the composite according to the third embodiment of the present disclosure. [Figure 15] FIG. 15 is a schematic cross-sectional view of the composite of FIG. 14 taken along a plane parallel to the longitudinal direction. DETAILED DESCRIPTION OF THE INVENTION

[0036] Hereinafter, embodiments of the present invention will be described. These descriptions are for the purpose of illustrating the present invention and are not intended to limit the present invention in any way.

[0037] In the present invention, two or more embodiments can be combined in any manner.

[0038] Unless otherwise specified, the materials, components, compounds, resins, catalysts, and solvents described herein may be used alone or in combination of two or more.

[0039] In this specification, ordinal numbers such as first, second, third, etc. in elements such as composition, resin, and direction are symbols for distinguishing each element, unless otherwise specified.

[0040] In this specification, for the convenience of explanation, each step is numbered and expressed as step (1), etc., but these numbers are used to identify or distinguish each step and do not indicate the order of the steps.

[0041] The accompanying drawings are schematic diagrams given priority for facilitating understanding of the present invention, and therefore the scale and shapes of the layers in the drawings are not accurate.

[0042] In the present invention, "light" refers only to infrared light, visible light, and ultraviolet light with wavelengths of 10 nm or more and 1 mm or less. In the present invention, "electromagnetic waves" refers to electromagnetic waves with wavelengths other than light.

[0043] In the present invention, the viscosity I of the first composition at 180° C. and the viscosity O of the second composition at 180° C. are measured by the method described in the Examples.

[0044] (Complex of the first embodiment) The present invention provides a composite in which a first composition is completely coated with a second composition, the first composition comprises a first resin; the second composition comprises a second resin; The softening point of the first resin is 100°C or less, The shortest distance dimension of the complex is 5 μm or more, The first composition and the second composition are a complex, each having a different function.

[0045] 1 is a schematic diagram of a cross section of an example of a composite according to the first embodiment of the present invention. In composite 1, a first composition 10 is completely covered by a second composition 20.

[0046] Fig. 2 is a schematic diagram of a cross section of another example of the composite of the first embodiment of the present invention. In Fig. 2, composite 1 is present on adherend 30. Adherend 30 is not included in composite 1. In the example of Fig. 2, the shape of second composition 20 is deformed by contact with adherend 30.

[0047] (First composition) The first composition includes a first resin having a softening point of 100° C. or less.

[0048] The first resin is not particularly limited as long as it has a softening point of 100°C or less, and can be appropriately selected depending on the application of the composite, etc. Examples include UV-curable resins, thermosetting resins, thermoplastic resins, silicone-based polymers, natural rubber, and synthetic rubber.

[0049] Examples of UV-curable resins include radically polymerizable compounds, photocationically polymerizable compounds, and photoanionically polymerizable compounds.

[0050] The radical polymerizable compound may be any compound having one or more radical polymerizable functional groups in the molecule, and is preferably a compound having one or more ethylenically unsaturated groups in one molecule, such as a vinyl group, a (meth)acryloyl group, or an allyl group.

[0051] Examples of the radically polymerizable compound having a vinyl group include aromatic vinyl compounds such as styrene and vinyl toluene; heterocycle-containing vinyl compounds such as vinyl imidazole and vinyl pyridine; and vinyl ethers such as n-propyl vinyl ether, isopropyl vinyl ether, n-butyl vinyl ether, 2-hydroxyethyl vinyl ether, cyclohexanedimethanol monovinyl ether, diethylene glycol monovinyl ether, 4-hydroxybutyl vinyl ether, cyclohexyl vinyl ether, dodecyl vinyl ether, octadecyl vinyl ether, lauryl vinyl ether, cetyl vinyl ether, and 2-ethylhexyl vinyl ether.

[0052] Examples of radically polymerizable compounds having a (meth)acryloyl group include unsaturated carboxylic acids such as acrylic acid, methacrylic acid, itaconic acid, crotonic acid, isocrotonic acid, and maleic acid, as well as salts, esters, acid amides, and acid anhydrides thereof; urethane acrylate, acrylonitrile, styrene derivatives, various unsaturated polyesters, unsaturated polyethers, unsaturated polyamides, and unsaturated polyurethanes.

[0053] The (meth)acryloyl group refers to an acryloyl group or a methacryloyl group.

[0054] Specific examples of the allyl compound include monofunctional allyl compounds such as allyl alcohol.

[0055] The photocationically polymerizable compound may be any compound having one or more photocationically polymerizable functional groups in one molecule, and is preferably a compound having one or more photocationically polymerizable functional groups in one molecule, such as an epoxy group, an oxetanyl group, a hydroxyl group, a vinyl ether group, an episulfide group, an ethyleneimine group, or an oxazoline group.

[0056] As the photocationically polymerizable compound having an epoxy group, a compound having one or more epoxy groups in one molecule can be used, and examples thereof include bisphenol A type epoxy resin, bisphenol F type epoxy resin, biphenyl type epoxy resin, tetramethylbiphenyl type epoxy resin, polyhydroxynaphthalene type epoxy resin, isocyanate-modified epoxy resin, 10-(2,5-dihydroxyphenyl)-9,10-dihydro Examples of the epoxy resin include 9-oxa-10-phosphaphenanthrene-10-oxide modified epoxy resins, phenol novolac type epoxy resins, cresol novolac type epoxy resins, hexanediol type epoxy resins, triphenylmethane type epoxy resins, tetraphenylethane type epoxy resins, dicyclopentadiene-phenol addition reaction type epoxy resins, phenol aralkyl type epoxy resins, naphthol novolac type epoxy resins, naphthol aralkyl type epoxy resins, naphthol-phenol co-condensed novolac type epoxy resins, naphthol-cresol co-condensed novolac type epoxy resins, aromatic hydrocarbon formaldehyde resin modified phenolic resin type epoxy resins, biphenyl-modified novolac type epoxy resins, trimethylolpropane type epoxy resins, alicyclic epoxy resins, acrylic resins having epoxy groups, polyurethane resins having epoxy groups, polyester resins having epoxy groups, and flexible epoxy resins.

[0057] Examples of photocationically polymerizable compounds having an oxetanyl group include oxetane compounds such as 1,4-bis[(3-ethyl-3-oxetanylmethoxy)methyl]benzene, 1,4-bis[(3-methyl-3-oxetanylmethoxy)methyl]benzene, 3-methyl-3-glycidyloxetane, 3-ethyl-3-glycidyloxetane, 3-methyl-3-hydroxymethyloxetane, 3-ethyl-3-hydroxymethyloxetane, and di{1-ethyl(3-oxetanyl)}methyl ether.

[0058] Other examples of UV-curable resins include the acrylic copolymers described in JP-A-2022-033767, the acrylic polymers described in JP-A-2021-059711, and photopolymerizable compounds.

[0059] Examples of thermosetting resins include urethane resins, phenolic resins, unsaturated polyester resins, epoxy resins, acrylic resins, urea resins, melamine resins, benzoguanamine resins, alkyd resins, vinyl ester resins, diallyl terephthalate resins, silicone resins, furan resins, ketone resins, xylene resins, thermosetting polyimide resins, benzoxazine resins, active ester resins, aniline resins, cyanate ester resins, and styrene-maleic anhydride (SMA) resins.

[0060] Specific examples of epoxy resins include bisphenol type epoxy resins such as bisphenol A type epoxy resins and bisphenol F type epoxy resins, aliphatic type epoxy resins, dicyclopentadiene type epoxy resins such as dicyclopentadiene-phenol addition reaction type epoxy resins, biphenyl type epoxy resins, tetramethylbiphenyl type epoxy resins, polyhydroxynaphthalene type epoxy resins, isocyanate-modified epoxy resins, 10-(2,5-dihydroxyphenyl)-9,10-dihydro Examples of epoxy resins that can be used include 9-oxa-10-phosphaphenanthrene-10-oxide modified epoxy resins, phenol novolac type epoxy resins, cresol novolac type epoxy resins, triphenylmethane type epoxy resins, tetraphenylethane type epoxy resins, phenol aralkyl type epoxy resins, naphthol novolac type epoxy resins, naphthol aralkyl type epoxy resins, naphthol-phenol co-condensed novolac type epoxy resins, naphthol-cresol co-condensed novolac type epoxy resins, aromatic hydrocarbon formaldehyde resin modified phenolic resin type epoxy resins, and biphenyl modified novolac type epoxy resins.

[0061] Examples of thermoplastic resins include polyolefin resins such as polypropylene and polymethylpentene, polycarbonate resins, (meth)acrylic resins, polystyrene resins, polyvinyl chloride resins, polyester resins such as polyethylene terephthalate, polybutylene terephthalate and polyethylene naphthalate, cyclic olefin resins, polyamide resins, polyarylate resins and polyimide resins.

[0062] Other examples of the thermoplastic resin include the thermoplastic resins described in JP-A-09-216966.

[0063] The softening point of the first resin is 100° C. or lower, preferably −40 to 100° C., −20 to 100° C., or 0 to 100° C. When the softening point is 100° C. or lower, the first composition of the present invention can be stably discharged in a desired shape from the nozzle of a liquid application device when the composition is applied using the device.

[0064] When the first resin is a curable resin, the softening point of the first resin before curing is 100°C or lower, preferably -40 to 100°C, -20 to 100°C, or 0 to 100°C.

[0065] When the first resin is a curable resin, the softening point of the first resin after curing is 250°C or lower, preferably -40 to 250°C, -40 to 100°C, -20 to 100°C, or 0 to 100°C.

[0066] The glass transition temperature (Tg) of the first resin is not particularly limited and is, for example, −80 to 200° C. In one embodiment, the Tg of the first resin is 50° C. or lower. From the viewpoint of being able to adjust the viscosity of the first composition of the present invention to an appropriate level when it is applied using a liquid application device, the Tg of the first resin is preferably −80° C. or higher and 40° C. or lower, more preferably −70° C. or higher and 30° C. or lower.

[0067] When the first resin is a curable resin, the Tg of the first resin before curing is, for example, −80 to 200° C. In one embodiment, when the first resin is a curable resin, the Tg of the first resin before curing is 50° C. or lower, preferably −80° C. or higher and 40° C. or lower, and more preferably −70° C. or higher and 20° C. or lower.

[0068] In one embodiment of the complex of the first aspect, the function of the first composition is any one of the following groups A to G. Group A: at least one selected from the group consisting of conductive, antistatic, electromagnetic wave shielding, radio wave absorption, and magnetic expression; Group B: at least one selected from the group consisting of thermal conduction, heat insulation, heat storage, and flame retardancy; Group C: at least one selected from the group consisting of light-blocking, coloring, light-guiding, light-refractive, light-storing, light-emitting, light-absorbing, photocatalytic, light-reflecting, light-collecting, sound-blocking, and vibration-proofing; Group D: at least one selected from the group consisting of hardening, decomposition, shrinkage, reinforcement, and stretch peeling; Group E: Dielectric properties; Group F: at least one selected from the group consisting of pressure-sensitive adhesives, hot-melt adhesives, thermal adhesives, and photocurable adhesives; and Group G: At least one selected from the group consisting of antibacterial, antifouling, contaminant removal, sustained drug release, bioactive action, and environmental response.

[0069] In one embodiment of the complex of the first aspect, the functions of the first composition and the second composition are any of the functions of groups A to G below. Group A: at least one selected from the group consisting of conductive, antistatic, electromagnetic wave shielding, radio wave absorption, and magnetic expression; Group B: at least one selected from the group consisting of thermal conduction, heat insulation, heat storage, and flame retardancy; Group C: at least one selected from the group consisting of light-blocking, coloring, light-guiding, light-refractive, light-storing, light-emitting, light-absorbing, photocatalytic, light-reflecting, light-collecting, sound-blocking, and vibration-proofing; Group D: at least one selected from the group consisting of hardening, decomposition, shrinkage, reinforcement, and stretch peeling; Group E: Dielectric properties; Group F: at least one selected from the group consisting of pressure-sensitive adhesives, hot-melt adhesives, thermal adhesives, and photocurable adhesives; Group G: At least one selected from the group consisting of antibacterial, antifouling, contaminant removal, sustained drug release, bioactive action, and environmental response.

[0070] In one embodiment of the composite of the first aspect, the function of the first composition is any one of electrical conductivity, electromagnetic wave shielding, heat conduction, and dielectric properties, and the function of the second composition is any one of functions in Group D or Group F. In another embodiment of the composite of the first aspect, the function of the first composition is any one of functions in Group D or Group F, and the function of the second composition is any one of functions in Group F, electrical conductivity, electromagnetic wave shielding, heat conduction, and dielectric properties. In yet another embodiment of the composite of the first aspect, the function of the first composition is vibration isolation, and the function of the second composition is any one of functions in Group F.

[0071] To impart conductivity, for example, a conductive agent described in JP-A-2024-075723 may be used.

[0072] In order to impart antistatic properties, for example, an antistatic agent described in JP-A-2024-082643 may be used.

[0073] In order to impart electromagnetic wave shielding properties, for example, a conductive filler described in JP-A-2022-186771 may be used.

[0074] In order to impart radio wave absorption properties, for example, the radio wave absorbing material described in Japanese Patent No. 6387789 may be used.

[0075] To impart magnetism, for example, a magnetic material such as that described in Japanese Patent Application Laid-Open No. 2003-224006 may be used.

[0076] In order to impart thermal conductivity, for example, a thermal conductive agent described in JP-A-2023-073998 may be used.

[0077] To impart heat insulation, for example, hollow fillers as described in JP-A-2004-137308 may be used.

[0078] To impart heat storage properties, for example, a heat storage agent such as that described in JP-A-2016-079230 may be used.

[0079] In order to impart flame retardancy, for example, a flame retardant as described in JP-A-2024-086772 may be used.

[0080] In order to impart light-shielding properties, for example, a light-shielding agent described in JP-A-2023-100610 may be used.

[0081] To impart colorability, for example, colorants described in International Publication No. 2024 / 048240 may be used.

[0082] In order to impart light-guiding properties, for example, a light-diffusing filler such as that described in JP-A-2023-138472 may be used.

[0083] In order to impart light refraction, for example, fine particles described in JP-A-2012-103712 may be used.

[0084] In order to impart luminescence, for example, a luminescent agent described in JP-A-2022-102870 may be used.

[0085] In order to impart luminescence, for example, a luminescent agent described in JP-A-2022-079933 may be used.

[0086] In order to impart light absorption properties, for example, a light absorber described in JP-A-2022-056340 may be used.

[0087] In order to impart photocatalytic properties, for example, the photocatalyst described in JP-A-2023-043393 may be used.

[0088] In order to impart light reflectivity, for example, a light reflecting agent described in JP 2020-013142 A may be used.

[0089] In order to impart light-collecting properties, for example, light-diffusing particles as described in JP-A-2006-030621 may be used.

[0090] To provide sound insulation, hollow beads as described in JP-A-2024-018427 may be used, for example.

[0091] In order to impart vibration-proofing properties, for example, powders described in JP-A-2024-034796 may be used.

[0092] To impart curability, for example, a curing agent described in JP-A-2024-084068 may be used.

[0093] Degradability can be imparted by using, for example, a thermal blowing agent described in JP 2015-160936 A. Note that degradability refers to the ability to easily disassemble the bond between multiple components when the composite of the present invention has the function of bonding multiple components together.

[0094] To impart shrinkability, for example, a resin used in a heat-shrinkable film as described in JP-A-2023-128049 may be used.

[0095] To impart reinforcing properties, for example, adhesive components and curing components used in the adhesive layer of the removable adhesive sheet described in JP 2021-98785 A may be used. Reinforcing properties are, for example, a function of providing strength to prevent the combined resin layer from tearing during peeling when removability is exhibited.

[0096] To impart stretch releasability, for example, a resin composition having the breaking strength and breaking elongation described in JP 2023-058655 A may be used. Stretch releasability is a function in which, when a functional layer that bonds multiple components is stretched, the bonding function is suddenly reduced, improving the releasability between the components.

[0097] In order to impart pressure-sensitive adhesiveness, for example, a pressure-sensitive adhesive such as that described in JP-A-2005-517078 may be used.

[0098] In order to impart hot-melt adhesiveness, for example, a hot-melt resin composition as described in JP-A-2000-007879 may be used.

[0099] To impart thermal adhesiveness, for example, a thermal adhesive such as that described in JP-A-2016-014090 may be used.

[0100] In order to impart photocurable adhesiveness, for example, a photocurable adhesive such as that described in WO 2016 / 136901 may be used.

[0101] In order to impart antibacterial properties, for example, an antibacterial agent described in JP-A-2024-049106 may be used.

[0102] In order to impart antifouling properties, for example, a fluorine-containing antifouling agent described in JP-A-2023-170233 may be used.

[0103] In order to impart contaminant removability, for example, a composition for forming a self-peeling film described in JP-A-2022-123884 may be used. Contaminant removability is a function of removing contaminants attached to a surface.

[0104] To impart sustained drug release, for example, a drug-containing adhesive layer such as that described in JP 2020-083885 A may be used. Note that sustained drug release refers to the function of the composition of the present invention containing a drug and exuding the drug over time.

[0105] To impart a biologically active effect, for example, growth hormones described in JP-A-10-080277 may be used. The biologically active effect is derived from the chemical substances contained in the composition of the present invention and is a function involved in maintaining and regulating the vital activities and physiological functions of a living organism.

[0106] To impart environmental responsiveness, for example, a temperature-responsive polymer such as that described in JP 2019-085438 A may be used. Environmental responsiveness is a function in which properties such as water solubility change in response to environmental temperature, humidity, etc.

[0107] To impart the dielectric properties of group E, for example, the polarity of the polymer to be blended may be adjusted; increasing the proportion of highly polar components increases the dielectric constant.

[0108] The light-guiding properties of the C group may also be improved by adjusting the refractive index of the polymer to be blended, and the higher the refractive index, the higher the light-guiding properties.

[0109] The photorefractive properties of Group C may also be adjusted, for example, by the functional groups contained in the polymer to be blended. Introducing a functional group with high polarization into the polymer increases the refractive index.

[0110] The type of polymer used to adjust the dielectric properties, light conductivity, and light refraction properties is not particularly limited, and the resins exemplified as the first resin can be used.

[0111] The type of functional group in the polymer used to adjust the dielectric properties is not particularly limited and can be selected according to the required dielectric properties. For example, a monomer described in JP-A-2023-073162 may be used.

[0112] The type of functional group in the polymer used to adjust the photorefractive index is not particularly limited, and examples of functional groups with high polarization include aromatic rings, halogens, etc. For example, monomers described in JP-A-2010-196001 may be used.

[0113] The first composition may contain, depending on the application and function, for example, fine particles, plasticizers, antioxidants, ultraviolet absorbers, antistatic agents, surfactants, colorants, light stabilizers, foaming agents, lubricants, crystal nucleating agents, crystallization accelerators, crystallization retarders, catalyst deactivators, thermoplastic resins, thermosetting resins, impact modifiers, slip agents, crosslinking agents, crosslinking aids, tackifiers, silane coupling agents, processing aids, mold release agents, hydrolysis inhibitors, heat stabilizers, antiblocking agents, antifogging agents, flame retardants, flame retardant aids, light diffusing agents, antibacterial agents, antifungal agents, dispersants, resins other than the first resin (i.e., resins having a softening point higher than 100°C), solvents, and the like.

[0114] In one embodiment of the composite of the first aspect, at least one of the first composition and the second composition comprises an additive. In another embodiment of the composite of the first aspect, the first composition and the second composition comprise an additive.

[0115] Examples of the fine particles include organic fine particles and inorganic fine particles.

[0116] Examples of organic fine particles include polyester-based resin fine particles, polyurethane-based resin fine particles, polyolefin-based resin fine particles, polymer-based fine particles made of styrene and polyolefin, and fine particles made of hydrogenated products thereof, cellulose-based resin fine particles, silicone-based fine particles, melamine-based resin fine particles, acrylic-based resin fine particles, acrylic-styrene copolymer fine particles, polycarbonate-based resin fine particles, polystyrene-based resin fine particles, and benzoguanamine-based resin fine particles.

[0117] Examples of inorganic fine particles include silica, alumina, mica, talc, aluminum flakes, and glass flakes.

[0118] The fine particles may also contain conductive fine particles, such as conductive metal particles of gold, silver, copper, platinum, zinc, iron, tin, lead, aluminum, cobalt, indium, nickel, chromium, titanium, antimony, bismuth, germanium, cadmium, etc., conductive metal oxide particles of indium tin oxide (ITO), ZnO, SnO, etc., conductive carbon particles of carbon nanotubes, Ketjen black, etc., and conductive polymers of polypyrrole, polyacetylene, polythiophene, etc.

[0119] The fine particles may also contain thermally conductive fine particles, such as boron nitride, aluminum nitride, silicon nitride, gallium nitride, aluminum oxide, silicon carbide, silicon dioxide, diamond, magnesium oxide, anhydrous magnesium carbonate, magnesium hydroxide, and aluminum hydroxide.

[0120] In one embodiment of the conjugate of the first and second aspects of the invention, said first composition further comprises microparticles.

[0121] The viscosity of the first composition is not particularly limited and can be selected appropriately. In one embodiment, the viscosity I of the first composition at 180°C is 500,000 mPa·s or less. It is preferably 10 to 500,000 mPa·s, more preferably 100 to 450,000 mPa·s, particularly preferably 500 to 400,000 mPa·s, and most preferably 1,000 to 400,000 mPa·s. When the viscosity is 500,000 mPa·s or less, the first composition of the present invention can be stably discharged in a desired shape from the nozzle of a liquid application device when applied using the device.

[0122] The viscosity of the first composition and the second composition of the present invention can be measured by placing the composition in a Thermosel: Model 106 and heating it to a desired temperature, and using a composition viscosity measuring device: HA DVPlus manufactured by Brookfield Corporation.

[0123] (Second Composition) The second composition includes a second resin.

[0124] The second resin may be any of the resins listed as the first resin. The second resin may have a softening point of more than 100° C. The first and second resins may be the same or different.

[0125] In one embodiment of the complex of the first aspect, the function of the second composition is any one of the following groups A to G. Group A: at least one selected from the group consisting of conductive, antistatic, electromagnetic wave shielding, radio wave absorption, and magnetic expression; Group B: at least one selected from the group consisting of thermal conduction, heat insulation, heat storage, and flame retardancy; Group C: at least one selected from the group consisting of light-blocking, coloring, light-guiding, light-refractive, light-storing, light-emitting, light-absorbing, photocatalytic, light-reflecting, light-collecting, sound-blocking, and vibration-proofing; Group D: at least one selected from the group consisting of hardening, decomposition, shrinkage, reinforcement, and stretch peeling; Group E: Dielectric properties; Group F: at least one selected from the group consisting of pressure-sensitive adhesives, hot-melt adhesives, thermal adhesives, and photocurable adhesives; Group G: At least one selected from the group consisting of antibacterial, antifouling, contaminant removal, sustained drug release, bioactive action, and environmental response.

[0126] The second composition may contain, depending on the application and function, for example, fine particles, plasticizers, antioxidants, ultraviolet absorbers, antistatic agents, surfactants, colorants, light stabilizers, foaming agents, lubricants, crystal nucleating agents, crystallization accelerators, crystallization retarders, catalyst deactivators, thermoplastic resins, thermosetting resins, impact modifiers, slip agents, crosslinking agents, crosslinking aids, tackifiers, silane coupling agents, processing aids, mold release agents, hydrolysis inhibitors, heat stabilizers, antiblocking agents, antifogging agents, flame retardants, flame retardant aids, light diffusing agents, antibacterial agents, antifungal agents, dispersants, solvents, and the like.

[0127] Examples of the fine particles include organic fine particles and inorganic fine particles.

[0128] Examples of organic fine particles include polyester-based resin fine particles, polyurethane-based resin fine particles, polyolefin-based resin fine particles, polymer-based fine particles made of styrene and polyolefin, and fine particles made of hydrogenated products thereof, cellulose-based resin fine particles, silicone-based fine particles, melamine-based resin fine particles, acrylic-based resin fine particles, acrylic-styrene copolymer fine particles, polycarbonate-based resin fine particles, polystyrene-based resin fine particles, and benzoguanamine-based resin fine particles.

[0129] Examples of inorganic fine particles include silica, alumina, mica, talc, aluminum flakes, and glass flakes.

[0130] The fine particles may also contain conductive fine particles, such as nano-sized conductive metal particles of gold, silver, copper, platinum, zinc, iron, tin, lead, aluminum, cobalt, indium, nickel, chromium, titanium, antimony, bismuth, germanium, cadmium, etc., nano-sized conductive metal oxide particles of indium tin oxide (ITO), ZnO, SnO, etc., nano-sized conductive carbon particles of carbon nanotubes, Ketjen black, etc., and nano-sized conductive polymers of polypyrrole, polyacetylene, polythiophene, etc.

[0131] The fine particles may also contain thermally conductive fine particles, such as boron nitride, aluminum nitride, silicon nitride, gallium nitride, aluminum oxide, silicon carbide, silicon dioxide, diamond, magnesium oxide, anhydrous magnesium carbonate, magnesium hydroxide, and aluminum hydroxide.

[0132] The viscosity of the second composition is not particularly limited and can be selected appropriately. The viscosity O of the second composition at 180°C is, for example, 500 to 1,000,000 mPa·s. It is preferably 100 to 1,000,000 mPa·s, more preferably 500 to 800,000 mPa·s, and particularly preferably 1,000 to 500,000 mPa·s. A viscosity of 500 to 1,000,000 mPa·s can prevent the second composition of the present invention from dripping from the nozzle of a liquid application device when the composition is applied with the device. In one embodiment, the viscosity O of the second composition at 180°C is higher than the viscosity I of the first composition at 180°C.

[0133] In one embodiment, the second composition is a pressure-sensitive adhesive or adhesive. In another embodiment, the second composition is a hot-melt pressure-sensitive adhesive or hot-melt adhesive. In yet another embodiment, the second composition is a heat-curable pressure-sensitive adhesive or heat-curable adhesive. In yet another embodiment, the second composition is a UV-curable pressure-sensitive adhesive or UV-curable adhesive.

[0134] In one embodiment, the second composition is a cured composition. In another embodiment, the second composition is a cured pressure sensitive adhesive or a cured adhesive.

[0135] In the composite of the first embodiment, the first composition may be completely covered by the second composition, or the third composition may be present inside the first composition, or the third composition may be present between the first composition and the second composition.

[0136] The composite of the first embodiment may have a shortest dimension (width, depth, or height) of 5 μm or more. The shortest dimension is, for example, preferably 5 to 5,000 μm, more preferably 10 to 3,000 μm, particularly preferably 50 to 3,000 μm, even more preferably 70 to 3,000 μm, and most preferably 100 to 2,000 μm. By having the shortest dimension (width, depth, or height) of 5 μm or more, the distance between the nozzle of the composition application device and the adherend is within an appropriate range, preventing contact between the nozzle and the adherend and enabling the composite of the first embodiment to be applied with precision. Dimensions other than the shortest dimension are not particularly limited and may be adjusted as appropriate. For example, when the height is the shortest dimension, the width and depth dimensions are not limited.

[0137] The shape of the complex of the first embodiment is not particularly limited, and examples include a sphere, an ellipsoid, a cylinder, a rectangular parallelepiped, a cone, a pyramid, other regular solids, and irregular shapes.

[0138] (Method for producing the composite of the first embodiment) The composite of the first embodiment can be produced, for example, by the following steps: step (1) of preparing a first composition and a second composition, step (2) of preparing a liquid application device (wherein the liquid application device has a double structure in which the discharge area of ​​a discharge nozzle for discharging the first composition is surrounded by the discharge area of ​​a discharge nozzle for discharging the second composition), and step (3) of applying the first composition and the second composition using the liquid application device to completely cover the first composition with the second composition, thereby forming the composite of the first embodiment.

[0139] The liquid application device has a double structure in which the discharge area of ​​the discharge nozzle for discharging the first composition is surrounded by the discharge area of ​​the discharge nozzle for discharging the second composition, thereby enabling the first composition to be completely covered by the second composition when the first composition and the second composition are applied.

[0140] The method for producing the composite of the first embodiment may include a step (4) of heating at least one of the first composition and the second composition to adjust the viscosity of the composition to a suitable level for application. A suitable heating device can be used to heat the composition.

[0141] (Complex of the second embodiment) The present invention provides a method for producing a composition comprising: a second composition in contact with the first composition and at least partially covering the first composition, the first composition comprises a first resin; the second composition comprises a second resin; In a first direction in which the first composition extends, there is at least one portion P in which only the first composition is present in a first cross section of the composite perpendicular to the first direction, The first composition and the second composition are a complex, each having a different function.

[0142] FIG. 3 is a plan view schematically illustrating an example of a composite of the present invention. In the example composite 2 of FIG. 3, the first composition 10 is partially covered with the second composition 20. In FIG. 3, the vertical direction of the paper is the first direction. The cross section AA of FIG. 3 is perpendicular to the first direction and is the first cross section. Reference numeral 40 denotes a portion P where only the first composition 10 is present in the first cross section of the composite 2 perpendicular to the first direction. In the example of FIG. 3, portions P40 are present at both ends of the composite 2 in the first direction. Although not shown, in the plan views of FIGS. 5, 7, 9, 11, and 12, the first direction is the same as the first direction in FIG. 1.

[0143] A "first cross section of a composite that is perpendicular to the first direction" refers to a plane in which the first direction is normal to the first cross section. The first cross section may be perpendicular to the first direction at any position in the composite. The "first" in "first cross section" is intended to identify a cross section of a composite in a specific direction, and does not indicate that there are multiple cross sections in the same direction. For example, in Figure 3, both cross sections AA and BB are "first cross sections" because they are cross sections of the composite that are perpendicular to the first direction. However, in Figure 3, cross section AA is the first cross section at portion P, and cross section BB is the first cross section at a portion other than portion P.

[0144] Figure 4 is a cross-sectional view schematically illustrating an example of the composite of Figure 3. Figure 4(a) is a cross-sectional view taken along the line AA in Figure 3 (i.e., the first cross-section), in which only the first composition 10 is present. Figure 4(b) to (g) are examples of cross-sectional views taken along the line BB in Figure 3. The cross-section taken along the line BB of the example of Figure 3 may be any of Figure 4(b) to (g).

[0145] In Figure 4(b), the cross-sectional outline of the first composition and the cross-sectional outline of the second composition are rectangular. In Figure 4(b), the second composition covers the entire periphery of the first composition.

[0146] In Fig. 4(c), the cross-sectional outline of the first composition and the cross-sectional outline of the second composition are rectangular. In Fig. 4(c), the second composition covers part of the periphery of the first composition.

[0147] In Figure 4(d), the cross-sectional shape of the first composition is rectangular, and the cross-sectional shape of the second composition is circular. In Figure 4(d), the second composition covers the entire periphery of the first composition.

[0148] In (e) of Figure 4, the cross-sectional shape of the first composition is circular, and the cross-sectional shape of the second composition is rectangular. In (e) of Figure 4, the second composition covers the entire periphery of the first composition.

[0149] In Fig. 4(f), the cross-sectional shape of the first composition is semicircular, and the cross-sectional shape of the second composition is rectangular. In Fig. 4(f), the second composition covers a part of the periphery of the first composition.

[0150] In Fig. 4(g), the cross-sectional outline of the first composition and the cross-sectional outline of the second composition are circular. In Fig. 4(g), the second composition covers the entire periphery of the first composition.

[0151] In the composite of the present invention, for example, as shown in Figures 3 and 4, there is a portion P in the first cross section where only the first composition is present, and therefore, multiple functions can be exerted in the thickness direction (the vertical direction in Figure 4) and in the plane direction (the vertical and horizontal directions in Figure 3).

[0152] For example, using the composites of Figures 3 and 4(b), if the first composition is conductive and the second composition is adhesive, in the planar direction (the up-down and left-right directions in Figure 3), the second composition portion will exhibit adhesiveness and the first composition portion will exhibit conductivity, and in the thickness direction (the up-down and left-right directions in Figure 4(b)), the second composition portion will exhibit adhesiveness and the first composition portion will exhibit conductivity.

[0153] 13 is a cross-sectional view schematically showing a conventional laminate having a typical two-layer structure. When a conventional laminate 100 has a conductive layer 110 and an adhesive layer 120, the conductive layer 110 provides conductivity and the adhesive layer 120 provides adhesion in the thickness direction, but the surface direction (i.e., when viewed from a plan view) provides only one of the conductive layer 110 and the adhesive layer 120.

[0154] The outline of the first composition in the first cross section at part P and the outline of the first composition in the first cross section other than part P may be the same (e.g., (a) and (b) in Figure 4) or may be different (e.g., (a) and (e) in Figure 4).

[0155] The first composition may have the same or different shapes in the first direction. The first composition may have the same or different dimensions in the first cross section in the first direction. For example, the shapes of the first cross sections of the portion P and the portion other than the portion P may both be rectangular, and the dimensions of the first cross section of the portion P may be 2 cm x 1 cm, and the dimensions of the first cross section of the portion other than the portion P may be 1 cm x 0.5 cm.

[0156] Figure 5 is a plan view schematically showing another example of the composite of the present invention. The composite 2 of the example in Figure 5 is similar to the composite 2 of the example in Figure 3, except that the dimensions of the first composition 10 at both ends in the first direction (i.e., portion P40) are different. In the example in Figure 5, the outer shape of the first composition 10 at portion P40 is the same as the outer shape of the second composition 20 other than portion P40.

[0157] FIG. 6 is a cross-sectional view schematically illustrating an example of the composite of FIG. 5. FIG. 6(a) is a cross-sectional view taken along the line AA in FIG. 5 (i.e., the first cross-section), in which only the first composition 10 is present. FIG. 6(b) is an example of a cross-sectional view taken along the line BB in FIG. 5. In the example of the composite of FIGS. 5 and 6, the outer shape of the second composition 20 in the first cross-section (i.e., the outer dimensions of the second composition in FIG. 6(b)) matches the outer shape of the first composition 10 in the first cross-section in portion P40 (i.e., the outer dimensions of the first composition in FIG. 6(a)).

[0158] Although not shown, the cross section (b) in the BB cross section and CC cross section in FIGS. 6, 8 and 10 may be any of (c) to (g) in FIG.

[0159] Fig. 7 is a plan view schematically showing another example of the composite of the present invention. In the composite 2 of the example of Fig. 7, a portion P40 is present in a location other than both ends in the first direction.

[0160] Figure 8 is a cross-sectional view schematically illustrating an example of the composite of Figure 7. Figure 8(a) is a cross-sectional view taken along the line AA of Figure 7 (i.e., the first cross-section), in which only the first composition 10 is present. Figure 8(b) is an example of a cross-sectional view taken along the line BB and CC of Figure 7.

[0161] Figure 9 is a plan view schematically showing another example of the composite of the present invention. In the composite 2 of the example in Figure 9, a portion P40 is present in a location other than both ends in the first direction. In the example in Figure 9, the outer shape of the first composition 10 in the portion P40 is the same as the outer shape of the second composition 20 other than the portion P40.

[0162] Figure 10 is a cross-sectional view schematically illustrating an example of the composite of Figure 9. Figure 10(a) is a cross-sectional view taken along the line AA of Figure 9 (i.e., the first cross-section), in which only the first composition 10 is present. Figure 10(b) is an example of a cross-sectional view taken along the line BB and CC of Figure 9.

[0163] In the composite of the second aspect, when viewed along a first direction, there is at least one moiety P in which only the first composition is present in a first cross section. In one embodiment, the number of moieties P is one. In another embodiment, the number of moieties P is two or more.

[0164] The location of moiety P in the complex of the second aspect is not particularly limited. In one embodiment, moiety P is present at one end or both ends of the complex in the first direction. In another embodiment, moiety P is present at a location other than both ends of the complex in the first direction (see, for example, Figure 7). In yet another embodiment, moiety P is present at a location other than both ends and both ends of the complex in the first direction (see, for example, Figure 11). In yet another embodiment, moiety P is present at a location other than both ends and one end of the complex in the first direction (see, for example, Figure 12).

[0165] The outer shape of the first composition in the first cross section of portion P can be any shape, such as a circle, an ellipse, a rectangle, or any other regular polygon or irregular shape.

[0166] The outer shape of the first composition in the first cross section other than the portion P can be any shape such as a circle, an ellipse, a rectangle, any other regular polygon, or an irregular shape.

[0167] The outer shape of the first composition in the first cross section at portion P may be the same as or different from the outer shape of the second composition in the first cross section other than portion P. Furthermore, the outer shape of the first composition in the first cross section other than portion P may be the same as or different from the outer shape of the second composition in the first cross section other than portion P. In one embodiment, the outer shape of the second composition in the first cross section other than portion P matches the outer shape of the first composition in the first cross section at portion P.

[0168] In the first cross section, the second composition at least partially covers the first composition except for portion P. In one embodiment, in the first cross section, the second composition covers the entire periphery of the first composition except for portion P (see, for example, (b), (d), (e), and (g) in FIG. 4). In another embodiment, in the first cross section, the second composition covers 40 to 100% of the periphery of the first composition except for portion P.

[0169] The shape of the first composition is not particularly limited as long as it extends in the first direction, and can be any shape. In one embodiment, the shape of the first composition is a rod, a thread, a column, or a hollow cylinder.

[0170] The dimensions of the first composition are not particularly limited as long as they extend in the first direction, and can be any dimension. In one embodiment, the first composition has the largest dimension in the first direction, and the dimensions in two directions perpendicular to the first direction in the first cross section (e.g., the vertical and horizontal directions in FIG. 2) are smaller than the dimension in the first direction. In another embodiment, the first composition has the largest dimension in the first direction, the dimension in a second direction perpendicular to the first direction in the first cross section (e.g., the horizontal direction in FIG. 2) is smaller than the dimension in the first direction, and the dimension in a third direction perpendicular to the second direction in the first cross section (e.g., the vertical direction in FIG. 4) is smallest. In yet another embodiment, the dimension in the first direction and the dimension in the second direction (e.g., the horizontal direction in FIG. 4) are the same, and the dimension in the third direction (e.g., the vertical direction in FIG. 4) is smallest.

[0171] The shape of the second composition is not particularly limited as long as it at least partially covers the first composition, and can be any shape. In one embodiment, the shape of the second composition is a hollow rod, a hollow thread, or a hollow cylinder.

[0172] The cross-sectional shape of the second composition in the first cross section other than the portion P can be any shape, such as a circle, an ellipse, a rectangle, or any other regular polygon or irregular shape.

[0173] The dimensions of the second composition are not particularly limited as long as it at least partially covers the first composition, and it can have any dimensions.

[0174] The complex of the second embodiment may be axisymmetric or asymmetric with respect to a first direction or a second direction perpendicular to the first direction (for example, the left-right direction in FIG. 4).

[0175] When viewed in a plan view (e.g., see FIG. 3 ) with the first direction of the complex as the up-down direction, the area ratio of the portion P to the area other than the portion P is not particularly limited and can be any area ratio. In one embodiment, the total area of ​​the portion P is larger than the total area of ​​the area other than the portion P. In another embodiment, the total area of ​​the portion P is equal to the total area of ​​the area other than the portion P. In yet another embodiment, the total area of ​​the portion P is smaller than the total area of ​​the area other than the portion P.

[0176] When a plurality of moieties P are present in the first direction of the complex, the moieties P may be arranged at equal intervals or at random intervals in the first direction.

[0177] All descriptions (including preferred contents and embodiments) of the first composition in the composite of the second aspect are the same as the descriptions of the first composition in the composite of the first aspect, unless technically inconsistent. The first resin in the composite of the second aspect is not limited to a resin having a softening point of 100°C or less, and may be a resin having a softening point above 100°C. Furthermore, all descriptions (including preferred contents and embodiments) of the second composition in the composite of the second aspect are the same as the descriptions of the second composition in the composite of the first aspect, unless technically inconsistent.

[0178] In one embodiment of the complex of the second aspect, the function of the first composition is any one of the following groups A to G. Group A: at least one selected from the group consisting of conductive, antistatic, electromagnetic wave shielding, radio wave absorption, and magnetic expression; Group B: at least one selected from the group consisting of thermal conduction, heat insulation, heat storage, and flame retardancy; Group C: at least one selected from the group consisting of light-blocking, coloring, light-guiding, light-refractive, light-storing, light-emitting, light-absorbing, photocatalytic, light-reflecting, light-collecting, sound-blocking, and vibration-proofing; Group D: at least one selected from the group consisting of hardening, decomposition, shrinkage, reinforcement, and stretch peeling; Group E: Dielectric properties; Group F: at least one selected from the group consisting of pressure-sensitive adhesives, hot-melt adhesives, thermal adhesives, and photocurable adhesives; and Group G: At least one selected from the group consisting of antibacterial, antifouling, contaminant removal, sustained drug release, bioactive action, and environmental response.

[0179] In one embodiment of the complex of the second aspect, the function of the second composition is any one of the following groups A to G. Group A: at least one selected from the group consisting of conductive, antistatic, electromagnetic wave shielding, radio wave absorption, and magnetic expression; Group B: at least one selected from the group consisting of thermal conduction, heat insulation, heat storage, and flame retardancy; Group C: at least one selected from the group consisting of light-blocking, coloring, light-guiding, light-refractive, light-storing, light-emitting, light-absorbing, photocatalytic, light-reflecting, light-collecting, sound-blocking, and vibration-proofing; Group D: at least one selected from the group consisting of hardening, decomposition, shrinkage, reinforcement, and stretch peeling; Group E: Dielectric properties; Group F: at least one selected from the group consisting of pressure-sensitive adhesives, hot-melt adhesives, thermal adhesives, and photocurable adhesives; Group G: At least one selected from the group consisting of antibacterial, antifouling, contaminant removal, sustained drug release, bioactive action, and environmental response.

[0180] In one embodiment of the complex of the second aspect, the functions of the first composition and the second composition are any of the following groups A to G. Group A: at least one selected from the group consisting of conductive, antistatic, electromagnetic wave shielding, radio wave absorption, and magnetic expression; Group B: at least one selected from the group consisting of thermal conduction, heat insulation, heat storage, and flame retardancy; Group C: at least one selected from the group consisting of light-blocking, coloring, light-guiding, light-refractive, light-storing, light-emitting, light-absorbing, photocatalytic, light-reflecting, light-collecting, sound-blocking, and vibration-proofing; Group D: at least one selected from the group consisting of hardening, decomposition, shrinkage, reinforcement, and stretch peeling; Group E: Dielectric properties; Group F: at least one selected from the group consisting of pressure-sensitive adhesives, hot-melt adhesives, thermal adhesives, and photocurable adhesives; Group G: At least one selected from the group consisting of antibacterial, antifouling, contaminant removal, sustained drug release, bioactive action, and environmental response.

[0181] In one embodiment of the composite of the second aspect, the function of the first composition is any one of electrical conductivity, electromagnetic wave shielding, heat conduction, and dielectric properties, and the function of the second composition is any one of functions in Group D or Group F. In another embodiment of the composite of the second aspect, the function of the first composition is any one of functions in Group D or Group F, and the function of the second composition is any one of functions in Group F, electrical conductivity, electromagnetic wave shielding, heat conduction, and dielectric properties. In yet another embodiment of the composite of the second aspect, the function of the first composition is vibration isolation, and the function of the second composition is any one of functions in Group F.

[0182] In one embodiment of the composite of the second aspect, at least one of the first composition and the second composition comprises an additive. In another embodiment of the composite of the second aspect, the first composition and the second composition comprise an additive.

[0183] The composite of the second embodiment may be in contact with the first composition, with the second composition at least partially covering the first composition, and the third composition may be present inside the first composition, or the third composition may be present outside the second composition.

[0184] In one embodiment, the width (shortest distance dimension) of the complex of the second aspect is 5 μm or greater.

[0185] (Method for producing the composite of the second embodiment) The composite of the second embodiment can be produced, for example, by the following steps: step (1) of preparing a first composition and a second composition; step (2) of preparing a liquid applicator (wherein the liquid applicator has a double structure in which the discharge area of ​​a discharge nozzle for discharging the first composition is surrounded by the discharge area of ​​a discharge nozzle for discharging the second composition); step (3) of applying only the first composition using the liquid applicator; and step (4) of simultaneously applying the first composition and the second composition using the liquid applicator to cover at least a portion of the periphery of the first composition with the second composition. Here, steps (3) and (4) can be performed consecutively in any order, for any period of time, and any number of times.

[0186] The liquid application device has a double structure in which the discharge area of ​​the discharge nozzle for discharging the first composition is surrounded by the discharge area of ​​the discharge nozzle for discharging the second composition, thereby allowing only the first composition to be applied in step (3), and at least a portion of the periphery of the first composition to be covered with the second composition when the first composition and the second composition are applied in step (4).

[0187] For example, when producing the composite 2 in Figure 3, after steps (1) and (2), step (3) is first carried out for a certain period of time, then step (4) is carried out for a certain period of time, and then step (3) is carried out again for a certain period of time.

[0188] For example, when producing the composite 2 of FIG. 7, after steps (1) and (2), step (4) is first carried out for a certain period of time, then step (3) is carried out for a certain period of time, then step (4) is carried out again for a certain period of time, then step (3) is carried out again for a certain period of time, and then step (4) is carried out again for a certain period of time.

[0189] The method for producing the composite of the second embodiment may include a step (5) of heating at least one of the first composition and the second composition to adjust the viscosity of the composition to a suitable level for application. A suitable heating device can be used to heat the composition.

[0190] (Complex of the third aspect) In addition to the composites of the first and second aspects, the present disclosure also discloses a composite of a third aspect. The composite of the third aspect is a composite in which a first composition is coated with a second composition, the first composition comprises a first resin; the second composition comprises a second resin; The softening point of the first resin is 100°C or less, The shortest distance dimension of the complex is 5 μm or more, The first composition and the second composition are a composite having different functions. Note that the composite of the third aspect does not achieve the objectives of the first aspect or the second aspect. In the first aspect, the first composition is completely covered with the second composition, whereas in the third aspect, at least a portion of the first composition is covered with the second composition.

[0191] Fig. 14 is a perspective view schematically showing an example of a composite of the third embodiment. Fig. 15 is a schematic cross-sectional view of the composite of Fig. 14 taken along a plane parallel to the longitudinal direction. In a cable-shaped composite 130, a first composition 10 is coated with a second composition 20. In the example of Fig. 14, the end faces of the first composition and the second composition are flush with each other (form the same plane).

[0192] In the third embodiment, the end surfaces of both ends of the first composition and the second composition may be flush with each other, or only one end surface of the first composition and the second composition may be flush with each other.

[0193] In the composite of the third embodiment, the first composition, the second composition, their functions, shapes, etc. are the same as those of the composite of the first embodiment, except that at least a portion of the first composition is covered with the second composition.

[0194] (Method for producing the composite of the third embodiment) The composite of the third embodiment can be produced, for example, by the following steps: step (1) of preparing a first composition and a second composition, step (2) of preparing a liquid application device (wherein the liquid application device has a double structure in which the discharge area of ​​a discharge nozzle for discharging the first composition is surrounded by the discharge area of ​​a discharge nozzle for discharging the second composition), and step (3) of applying the first composition and the second composition using the liquid application device to coat at least a portion of the first composition with the second composition, thereby forming the composite of the third embodiment.

[0195] The liquid application device has a dual structure in which the discharge area of ​​the discharge nozzle for discharging the first composition is surrounded by the discharge area of ​​the discharge nozzle for discharging the second composition. When the first composition and the second composition are discharged from the discharge nozzle in step (3), the first composition and the second composition are discharged simultaneously, or the second composition is discharged before the first composition. When discharging is completed, the first composition and the second composition are discharged simultaneously, or the discharge of the second composition is stopped after the discharge of the first composition. This allows the first composition to be covered with the second composition. [Example]

[0196] The present invention will be described in more detail below by way of examples, but these examples are intended to illustrate the present invention and are not intended to limit the present invention in any way.

[0197] The weight average molecular weight (Mw) and number average molecular weight (Mn) of the resins used in the examples were measured using gel permeation chromatography (GPC) and are values ​​converted into standard polystyrene.

[0198] The materials used in the present examples are listed below.

[0199] Polyester resin Resin A1: Elitel (registered trademark) UE3400 (trade name, manufactured by Unitika Ltd., softening point 40°C, Tg -20°C, viscosity at 180°C 98670 mPa·s) Resin A2: Elitel (registered trademark) UE3231G (trade name, manufactured by Unitika Ltd., softening point 45°C, Tg 4°C, viscosity at 180°C 132,000 mPa s)

[0200] Polystyrene resin Resin A3: Quintac (registered trademark) 3280 (trade name, manufactured by Zeon Corporation, styrene content 25%, coupling ratio 83%, block polymer of polystyrene and polyisoprene), Mw: 131,000, Mw / Mn: 1.06

[0201] Urethane (meth)acrylate resin (A) [Synthesis Example 1] Polypropylene glycol and 2-hydroxyethyl acrylate were added to a reaction vessel equipped with a stirrer, reflux condenser, nitrogen inlet, and thermometer. The internal temperature was raised to 40°C, and isophorone diisocyanate was then added to the reaction vessel. The internal temperature was then raised to 80°C over 1 hour. The reaction mixture was then stirred at 80°C for 12 hours. Disappearance of the isocyanate groups in the reaction mixture was confirmed. The reaction mixture was then cooled to obtain Resin A4 as a urethane (meth)acrylate resin. The resulting Resin A4 had an acryloyl group equivalent of 26,500, an Mw of 53,000, and a Tg of -61°C.

[0202] [Synthesis Example 2] First, a polyester polyol was prepared using adipic acid and isophthalic acid as the acid components and 1,3-propanediol and 3-methyl-1,5-pentanediol as the diol components. The polyester polyol and N-(2-hydroxyethyl)acrylamide were then added to a reaction vessel equipped with a stirrer, reflux condenser, nitrogen inlet, and thermometer. The internal temperature was raised to 40°C, and trimethylhexamethylene diisocyanate was then added to the reaction vessel. The internal temperature was then raised to 80°C over 1 hour. The reaction mixture was then stirred at 80°C for 12 hours. The disappearance of the isocyanate groups in the reaction mixture was confirmed. The reaction mixture was then cooled to obtain Resin A5, a urethane (meth)acrylate resin. The resulting Resin A5 had an acryloyl group equivalent of 10,000, an Mw of 20,000, and a Tg of -32°C.

[0203] (Meth)acrylic monomer (B) Monomer B1: "NK Ester A-200" (trade name, manufactured by Shin-Nakamura Chemical Co., Ltd., polyethylene glycol #200 diacrylate) Monomer B2: "NK Ester A-TMPT" (trade name, manufactured by Shin-Nakamura Chemical Co., Ltd., trimethylolpropane triacrylate) Monomer B3: acryloylmorpholine (molecular weight 141.17, Tg 145°C when homopolymer is formed) Monomer B4: n-octyl acrylate (molecular weight 184.28, Tg -65°C when homopolymer is formed)

[0204] Photopolymerization initiator (C) Initiator C1: "Omnirad184" (trade name, manufactured by IGM RESINS BV, 1-hydroxycyclohexyl phenyl ketone)

[0205] Tackifying resin (D) Tackifying resin D1: "YS Polystar T115" (trade name, manufactured by Yasuhara Chemical Co., Ltd., terpene phenol resin, softening point 110-120°C) Tackifying resin D2: "YS Polystar TH130" (trade name, manufactured by Yasuhara Chemical Co., Ltd., terpene phenol resin, softening point 125-135°C)

[0206] Functionality imparting agent (E) Functionality imparting agent E1: Ni255 (manufactured by VALE, three-dimensional filament structure nickel filler, average particle size 2.5 μm) Functionality additive E2: "Expancel 051-40DU" (product name, manufactured by Nippon Phillite Co., Ltd., thermally expandable filler, foaming start temperature 108-113°C)

[0207] Antioxidant (F) Antioxidant F1: "Irganox 1010" (trade name, manufactured by BASF, hindered phenol antioxidant)

[0208] The instruments and devices used in the examples are as follows. Dispenser 1: "ML-8000X" (product name, manufactured by Musashi Engineering) Dispenser 2: "ML-808GX" (product name, manufactured by Musashi Engineering) PET film: "Emblett (registered trademark) SD-75" (product name, manufactured by Unitika Ltd., thickness 75 mm) 3D shape measurement module: "VHX-H6M" (product name, manufactured by KEYENCE Corporation) Digital multimeter: "KEW 1019R" (product name, manufactured by Kyoritsu Electric Instruments Co., Ltd.)

[0209] Compositions (1) to (6) were prepared according to the formulations shown in Table 1. In preparing compositions (1) and (3), the compositions were kneaded while heated to 200°C. The functions of each composition are also shown in Table 1.

[0210] [Table 1]

[0211] [Example 1: First embodiment] Composition (1) as the first composition and composition (2) as the second composition were filled into separate syringes and heated to 160°C and left to stand for 2 hours to remove any air bubbles from the syringes. Next, both compositions were heated to 180°C. The first composition was dispensed onto a PET film using dispenser 1, and the second composition was dispensed onto a PET film using dispenser 2, to obtain composite (1). The cross-sectional shape of composite (1) was measured using a 3D shape module, and was found to be 4000 μm wide and 900 μm high.

[0212] Discharge nozzles are attached to the tips of the two dispensers, and as shown in the cross-sectional shape of the discharge part below, the discharge part of the discharge nozzle has a double structure in which a discharge area for discharging the first composition is surrounded by a discharge area for discharging the second composition. Cross-sectional shape of the discharge part of the double discharge nozzle in a cross section perpendicular to the discharge direction: First composition discharge part: circular shape with a diameter of 1 mm Partition wall thickness between the first composition discharge portion and the second composition discharge portion: 0.4 mm Second composition discharge part: a circular shape with a diameter of 3.8 mm and a circular part with a diameter of 1.8 mm missing The coating device uses two dispensers to deliver the liquid, with the discharge portions of each dispenser connected to a double discharge nozzle. This coating device has a structure in which the first composition delivered from dispenser 1 is discharged from the inner discharge portion (first composition discharge portion), and the second composition delivered from dispenser 2 is discharged from the outer discharge portion (second composition discharge portion) that surrounds the inner discharge portion.

[0213] The discharge conditions are as follows: Distance from PET film: 1 mm Discharge pressure of the first composition: 100 kPa Discharge pressure of the second composition: 50 kPa Dispenser movement speed during application: 10 mm / sec

[0214] In the obtained composite (1), the first composition having electrical conductivity was completely covered with the second composition having hot-melt adhesive properties.

[0215] [Example 2: First embodiment] Composition (3) as the first composition and composition (4) as the second composition were filled into separate syringes and heated to 180°C. The first composition was dispensed onto a PET film using dispenser 1, and the second composition was dispensed onto a PET film using dispenser 2, to obtain composite (2). The cross-sectional shape of composite (2) was measured and found to be 4000 μm wide and 700 μm high. The same discharge nozzles as in Example 1 were used on the tips of the two dispensers.

[0216] The discharge conditions are as follows: Distance from PET film: 1 mm Discharge pressure of the first composition: 300 kPa Discharge pressure of the second composition: 50 kPa Dispenser movement speed during application: 10 mm / sec

[0217] In the obtained composite (2), the first composition having reinforcing properties was completely covered with the second composition having adhesive and degradable functions.

[0218] [Example 3: Second embodiment] Composition (5) as the first composition and composition (6) as the second composition were filled into separate syringes. The first composition was dispensed onto a PET film using dispenser 1, and the second composition was dispensed onto a PET film using dispenser 2. The discharge nozzles attached to the tips of the two dispensers were the same as those used in Example 2.

[0219] During extrusion, the first composition was 50 mm long, and the second extruded product was 40 mm long, 5 mm shorter than the start and end points of the first composition. This resulted in a 50 mm long extruded product with a cross-sectional shape of the portion where the first composition was encapsulated in the second composition, a width of 5000 μm, a height of 500 μm, a 5 mm range from each end where the first composition was exposed, and a 40 mm stretch excluding the end portions where the first composition was encapsulated in the second composition. Next, a UV irradiation device was used to directly irradiate the extruded product from above with ultraviolet light, yielding a composite (3) on a PET film. The ultraviolet light irradiation was performed at a wavelength of 300 to 390 nm, with an integrated light intensity of 450 mJ / cm. 2 The test was carried out under the following conditions.

[0220] The discharge conditions are as follows: Distance from PET film: 1 mm Discharge pressure of the first composition: 20 kPa Discharge pressure of the second composition: 350 kPa Dispenser movement speed during application: 20 mm / sec

[0221] In the resulting composite (3), the first composition has a conductive function, and the second composition has adhesive and insulating functions.

[0222] evaluation The prepared compositions and the resulting composites were evaluated in the following items 1 to 4.

[0223] 1. Viscosity The viscosity of the composition was measured using a cone-plate viscometer under the following conditions: Corn plate: 100P Rotation speed: 10 rpm Measurement temperature for compositions (1) to (3): 180°C Measurement temperature for compositions (4) to (6): 23°C

[0224] 2. Conductivity The electrical conductivity of composites (1) and (3) was measured. For composite (1), terminals of a digital multimeter were brought into contact with both ends (second composition) of the composite, and the electrical conductivity (electrical resistance value) was measured. For composite (3), terminals of a digital multimeter were brought into contact with both ends of the first composition and the second composition, and the electrical conductivity (electrical resistance value) was measured.

[0225] 3. 180° adhesive strength before heating The surface of the PET film onto which the composite (2) had been extruded was fixed to a stainless steel plate with double-sided tape on the side opposite to the surface on which the composite (2) had been laminated, to prepare a test specimen. Next, using a Tensilon tensile tester, the stainless steel plate of the test specimen was fixed, and only the composite (2) was gripped with a chuck and peeled from the PET film surface in a 180° direction at a pulling speed of 300 mm / min. The strength (N) at this time was measured and converted to N / mm by dividing by the cross-sectional width of the composite (2).

[0226] 4.180°adhesion after heating The composite (2) laminated on the PET film was placed in a circulating dryer at 80°C for 10 minutes to foam the second composition. The composite (2) was removed from the circulating dryer and allowed to cool at room temperature. The strength (N) was then measured in the same manner as in the measurement of "180° adhesive strength before heating," and converted to N / mm by dividing by the cross-sectional width of the composite (2).

[0227] The results are summarized in Table 2. When the conductivity measurement shows "Over Range," it means that the resistance is high and the sample does not have conductivity.

[0228] [Table 2] [Industrial Applicability]

[0229] According to the first aspect of the present invention, it is possible to provide a composite that can prevent material from spilling out from the edge and can perform multiple functions, and according to the second aspect of the present invention, it is possible to provide a composite that can perform multiple functions in both the thickness direction and the surface direction. [Explanation of symbols]

[0230] 1: Complex 2: Complex 10: First composition 20: Second composition 30: Adherent 40: Part P 100: Conventional laminate 110: Conductive layer 120:Adhesive layer 130: Complex 140: First composition 150: Second composition

Claims

1. A composite in which the first composition is completely coated with the second composition, the first composition comprises a first resin; the second composition comprises a second resin; the softening point of the first resin is 100°C or less; The shortest distance dimension of the complex is 5 μm or more, A complex, wherein the first composition and the second composition each have a different function.

2. a first composition; and a second composition in contact with the first composition and at least partially covering the first composition, the first composition comprises a first resin; the first composition comprises a second resin; In a first direction in which the first composition extends, there is at least one portion P in a first cross section of the composite perpendicular to the first direction, where only the first composition is present; A complex, wherein the first composition and the second composition each have a different function.

3. The function is selected from the following groups A to G: Group A: at least one selected from the group consisting of conductive, antistatic, electromagnetic wave shielding, radio wave absorbing, and magnetically expressing materials; Group B: at least one selected from the group consisting of thermally conductive, thermally insulating, heat-storing, and flame-retardant materials; Group C: at least one selected from the group consisting of light-blocking, coloring, light-guiding, light-refractive, light-storing, light-emitting, light-absorbing, photocatalytic, light-reflecting, light-collecting, sound-blocking, and vibration-proofing; Group D: at least one selected from the group consisting of hardening, decomposition, shrinkage, reinforcement, and stretch peelability; Group E: dielectric properties; Group F: at least one selected from the group consisting of pressure-sensitive adhesives, hot-melt adhesives, thermal adhesives, and photocurable adhesives; Group G: at least one selected from the group consisting of antibacterial, antifouling, stain removal, sustained drug release, bioactive action, and environmental response; The complex according to claim 1 or 2, which is any one of the groups:

4. 3. The composite of claim 1 or 2, wherein at least one of the first composition and the second composition comprises an additive.

5. 3. The composite according to claim 1, wherein the first resin has a glass transition temperature of 50°C or lower.

6. 3. The composite according to claim 1, wherein the viscosity I of the first composition at 180°C is 500,000 mPa·s or less.

7. 7. The composite of claim 6, wherein the viscosity O of the second composition at 180°C is higher than the viscosity I.

8. 3. The composite according to claim 1, wherein the first resin is a thermosetting resin or a UV-curable resin, and the softening point of the first resin before curing is 100°C or lower.

9. 6. The composite according to claim 5, wherein the first resin is a thermosetting resin or a UV-curable resin, and the glass transition temperature of the first resin before curing is 50°C or lower.

10. The composite of claim 1 or 2, wherein the first composition further comprises microparticles.

11. The composite of claim 1 or 2, wherein the second composition is a pressure-sensitive adhesive or adhesive.

12. 12. The composite of claim 11, wherein the pressure sensitive adhesive or glue is a hot melt type, a heat curing type, or a UV curing type.

13. The complex of claim 2 , wherein the moieties P are present at both ends of the complex in the first direction.

14. 3. The complex of claim 2, wherein the moiety P is at one end of the complex in the first direction.

15. The complex of claim 2 , wherein the moiety P is present at a location other than both ends of the complex in the first direction.

16. 3. The complex of claim 2, wherein the moiety P is present at locations other than both ends of the complex in the first direction.

17. 3. The composite of claim 2, wherein the moiety P is present at one end and at locations other than both ends of the composite in the first direction.

18. The composite of claim 2 , wherein the contour of the second composition in the first cross section coincides with the contour of the first composition in the first cross section in the portion P.

19. 3. The composite of claim 2, wherein the second composition in the first cross section completely surrounds the first composition.

20. 3. The composite of claim 2, wherein the second composition in the first cross section covers from 40% to less than 100% of the perimeter of the first composition.

21. The composite according to claim 2 , wherein the softening point of the first resin is 100° C. or less.

22. The composite of claim 2 , wherein the composite has a width of 5 μm or more.

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