WO2015152274A1 - 合わせガラス用中間膜、合わせガラス用中間膜の製造方法及び合わせガラス - Google Patents
合わせガラス用中間膜、合わせガラス用中間膜の製造方法及び合わせガラス Download PDFInfo
- Publication number
- WO2015152274A1 WO2015152274A1 PCT/JP2015/060211 JP2015060211W WO2015152274A1 WO 2015152274 A1 WO2015152274 A1 WO 2015152274A1 JP 2015060211 W JP2015060211 W JP 2015060211W WO 2015152274 A1 WO2015152274 A1 WO 2015152274A1
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- WO
- WIPO (PCT)
- Prior art keywords
- polyvinyl acetal
- acetal resin
- laminated glass
- film
- mol
- Prior art date
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- 239000005340 laminated glass Substances 0.000 title claims abstract description 164
- 238000004519 manufacturing process Methods 0.000 title claims description 21
- 229920002554 vinyl polymer Polymers 0.000 claims abstract description 169
- 239000011354 acetal resin Substances 0.000 claims abstract description 166
- 229920006324 polyoxymethylene Polymers 0.000 claims abstract description 166
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims abstract description 162
- 239000000463 material Substances 0.000 claims abstract description 113
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 73
- 239000004014 plasticizer Substances 0.000 claims abstract description 68
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 239000011229 interlayer Substances 0.000 claims description 106
- 239000010410 layer Substances 0.000 description 83
- 238000006359 acetalization reaction Methods 0.000 description 26
- 239000011521 glass Substances 0.000 description 25
- 230000021736 acetylation Effects 0.000 description 23
- 238000006640 acetylation reaction Methods 0.000 description 23
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N butyric aldehyde Natural products CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 description 17
- 229920005989 resin Polymers 0.000 description 14
- 239000011347 resin Substances 0.000 description 14
- -1 alkali metal salts Chemical class 0.000 description 13
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 13
- 229920005992 thermoplastic resin Polymers 0.000 description 11
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 239000004372 Polyvinyl alcohol Substances 0.000 description 9
- 229920002451 polyvinyl alcohol Polymers 0.000 description 9
- 230000035515 penetration Effects 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 7
- 150000001299 aldehydes Chemical class 0.000 description 7
- 125000004432 carbon atom Chemical group C* 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- AMIMRNSIRUDHCM-UHFFFAOYSA-N Isopropylaldehyde Chemical compound CC(C)C=O AMIMRNSIRUDHCM-UHFFFAOYSA-N 0.000 description 6
- NBBJYMSMWIIQGU-UHFFFAOYSA-N Propionic aldehyde Chemical compound CCC=O NBBJYMSMWIIQGU-UHFFFAOYSA-N 0.000 description 6
- 125000004036 acetal group Chemical group 0.000 description 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 6
- 239000005357 flat glass Substances 0.000 description 6
- 238000009413 insulation Methods 0.000 description 6
- 238000006116 polymerization reaction Methods 0.000 description 6
- 230000035484 reaction time Effects 0.000 description 6
- 239000002356 single layer Substances 0.000 description 6
- FRQDZJMEHSJOPU-UHFFFAOYSA-N Triethylene glycol bis(2-ethylhexanoate) Chemical compound CCCCC(CC)C(=O)OCCOCCOCCOC(=O)C(CC)CCCC FRQDZJMEHSJOPU-UHFFFAOYSA-N 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 229920002799 BoPET Polymers 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 150000007524 organic acids Chemical class 0.000 description 4
- 150000002895 organic esters Chemical class 0.000 description 4
- HGBOYTHUEUWSSQ-UHFFFAOYSA-N pentanal Chemical compound CCCCC=O HGBOYTHUEUWSSQ-UHFFFAOYSA-N 0.000 description 4
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 4
- JEYLQCXBYFQJRO-UHFFFAOYSA-N 2-[2-[2-(2-ethylbutanoyloxy)ethoxy]ethoxy]ethyl 2-ethylbutanoate Chemical compound CCC(CC)C(=O)OCCOCCOCCOC(=O)C(CC)CC JEYLQCXBYFQJRO-UHFFFAOYSA-N 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 3
- 150000001241 acetals Chemical class 0.000 description 3
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 125000000962 organic group Chemical group 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000011342 resin composition Substances 0.000 description 3
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 3
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- YJGHMLJGPSVSLF-UHFFFAOYSA-N 2-[2-(2-octanoyloxyethoxy)ethoxy]ethyl octanoate Chemical compound CCCCCCCC(=O)OCCOCCOCCOC(=O)CCCCCCC YJGHMLJGPSVSLF-UHFFFAOYSA-N 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- PYGXAGIECVVIOZ-UHFFFAOYSA-N Dibutyl decanedioate Chemical compound CCCCOC(=O)CCCCCCCCC(=O)OCCCC PYGXAGIECVVIOZ-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- UWHCKJMYHZGTIT-UHFFFAOYSA-N Tetraethylene glycol, Natural products OCCOCCOCCOCCO UWHCKJMYHZGTIT-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-L adipate(2-) Chemical compound [O-]C(=O)CCCCC([O-])=O WNLRTRBMVRJNCN-UHFFFAOYSA-L 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 150000001278 adipic acid derivatives Chemical class 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzaldehyde Chemical compound O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
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- JARKCYVAAOWBJS-UHFFFAOYSA-N hexanal Chemical compound CCCCCC=O JARKCYVAAOWBJS-UHFFFAOYSA-N 0.000 description 2
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- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- KQNPFQTWMSNSAP-UHFFFAOYSA-N isobutyric acid Chemical compound CC(C)C(O)=O KQNPFQTWMSNSAP-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical compound OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- KZVBBTZJMSWGTK-UHFFFAOYSA-N 1-[2-(2-butoxyethoxy)ethoxy]butane Chemical compound CCCCOCCOCCOCCCC KZVBBTZJMSWGTK-UHFFFAOYSA-N 0.000 description 1
- DLZBUNUDESZERL-UHFFFAOYSA-N 1-o-heptyl 6-o-nonyl hexanedioate Chemical compound CCCCCCCCCOC(=O)CCCCC(=O)OCCCCCCC DLZBUNUDESZERL-UHFFFAOYSA-N 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- CKQNDABUGIXFCL-UHFFFAOYSA-N 2-(2-octanoyloxyethoxy)ethyl octanoate Chemical compound CCCCCCCC(=O)OCCOCCOC(=O)CCCCCCC CKQNDABUGIXFCL-UHFFFAOYSA-N 0.000 description 1
- UNNGUFMVYQJGTD-UHFFFAOYSA-N 2-Ethylbutanal Chemical compound CCC(CC)C=O UNNGUFMVYQJGTD-UHFFFAOYSA-N 0.000 description 1
- OXQGTIUCKGYOAA-UHFFFAOYSA-N 2-Ethylbutanoic acid Chemical compound CCC(CC)C(O)=O OXQGTIUCKGYOAA-UHFFFAOYSA-N 0.000 description 1
- GCDUWJFWXVRGSM-UHFFFAOYSA-N 2-[2-(2-heptanoyloxyethoxy)ethoxy]ethyl heptanoate Chemical compound CCCCCCC(=O)OCCOCCOCCOC(=O)CCCCCC GCDUWJFWXVRGSM-UHFFFAOYSA-N 0.000 description 1
- LCZVSXRMYJUNFX-UHFFFAOYSA-N 2-[2-(2-hydroxypropoxy)propoxy]propan-1-ol Chemical compound CC(O)COC(C)COC(C)CO LCZVSXRMYJUNFX-UHFFFAOYSA-N 0.000 description 1
- SSKNCQWPZQCABD-UHFFFAOYSA-N 2-[2-[2-(2-heptanoyloxyethoxy)ethoxy]ethoxy]ethyl heptanoate Chemical compound CCCCCCC(=O)OCCOCCOCCOCCOC(=O)CCCCCC SSKNCQWPZQCABD-UHFFFAOYSA-N 0.000 description 1
- ALKCLFLTXBBMMP-UHFFFAOYSA-N 3,7-dimethylocta-1,6-dien-3-yl hexanoate Chemical compound CCCCCC(=O)OC(C)(C=C)CCC=C(C)C ALKCLFLTXBBMMP-UHFFFAOYSA-N 0.000 description 1
- GPZYYYGYCRFPBU-UHFFFAOYSA-N 6-Hydroxyflavone Chemical compound C=1C(=O)C2=CC(O)=CC=C2OC=1C1=CC=CC=C1 GPZYYYGYCRFPBU-UHFFFAOYSA-N 0.000 description 1
- BJIUNQZHYLBUNL-UHFFFAOYSA-N 6-heptoxy-6-oxohexanoic acid Chemical compound CCCCCCCOC(=O)CCCCC(O)=O BJIUNQZHYLBUNL-UHFFFAOYSA-N 0.000 description 1
- OIUGWVWLEGLAGH-UHFFFAOYSA-N 6-nonoxy-6-oxohexanoic acid Chemical compound CCCCCCCCCOC(=O)CCCCC(O)=O OIUGWVWLEGLAGH-UHFFFAOYSA-N 0.000 description 1
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- FSRKEDYWZHGEGG-UHFFFAOYSA-N [2-(8-methylnonyl)phenyl] dihydrogen phosphate Chemical compound CC(C)CCCCCCCC1=CC=CC=C1OP(O)(O)=O FSRKEDYWZHGEGG-UHFFFAOYSA-N 0.000 description 1
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- 239000002253 acid Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
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- 230000032683 aging Effects 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- ZFMQKOWCDKKBIF-UHFFFAOYSA-N bis(3,5-difluorophenyl)phosphane Chemical compound FC1=CC(F)=CC(PC=2C=C(F)C=C(F)C=2)=C1 ZFMQKOWCDKKBIF-UHFFFAOYSA-N 0.000 description 1
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 1
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- XWVQUJDBOICHGH-UHFFFAOYSA-N dioctyl nonanedioate Chemical compound CCCCCCCCOC(=O)CCCCCCCC(=O)OCCCCCCCC XWVQUJDBOICHGH-UHFFFAOYSA-N 0.000 description 1
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- 150000002334 glycols Chemical class 0.000 description 1
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- OJXOOFXUHZAXLO-UHFFFAOYSA-M magnesium;1-bromo-3-methanidylbenzene;bromide Chemical compound [Mg+2].[Br-].[CH2-]C1=CC=CC(Br)=C1 OJXOOFXUHZAXLO-UHFFFAOYSA-M 0.000 description 1
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- NUJGJRNETVAIRJ-UHFFFAOYSA-N octanal Chemical compound CCCCCCCC=O NUJGJRNETVAIRJ-UHFFFAOYSA-N 0.000 description 1
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 1
- 125000005461 organic phosphorous group Chemical group 0.000 description 1
- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 description 1
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- 239000000057 synthetic resin Substances 0.000 description 1
- OXFUXNFMHFCELM-UHFFFAOYSA-N tripropan-2-yl phosphate Chemical compound CC(C)OP(=O)(OC(C)C)OC(C)C OXFUXNFMHFCELM-UHFFFAOYSA-N 0.000 description 1
- WTLBZVNBAKMVDP-UHFFFAOYSA-N tris(2-butoxyethyl) phosphate Chemical compound CCCCOCCOP(=O)(OCCOCCCC)OCCOCCCC WTLBZVNBAKMVDP-UHFFFAOYSA-N 0.000 description 1
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
- B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
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- B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- B32B2250/03—3 layers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2329/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2329/14—Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2429/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2429/14—Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Definitions
- the present invention relates to an interlayer film for laminated glass used for laminated glass and a method for producing an interlayer film for laminated glass. Moreover, this invention relates to the laminated glass using the said intermediate film for laminated glasses.
- Laminated glass is superior in safety even if it is damaged by an external impact and the amount of glass fragments scattered is small. For this reason, the said laminated glass is widely used for a motor vehicle, a rail vehicle, an aircraft, a ship, a building, etc.
- the laminated glass is manufactured by sandwiching an intermediate film between a pair of glass plates.
- Patent Document 1 As an example of the interlayer film for laminated glass, Patent Document 1 listed below discloses that 100 parts by weight of a polyvinyl acetal resin having a degree of acetalization of 60 to 85 mol% and at least one of alkali metal salts and alkaline earth metal salts. A sound insulating layer containing 0.001 to 1.0 parts by weight of a metal salt of the above and a plasticizer exceeding 30 parts by weight is disclosed. This sound insulation layer may be a single layer and used as an intermediate film.
- Patent Document 1 also describes a multilayer intermediate film in which the sound insulation layer and other layers are laminated.
- the other layer laminated on the sound insulation layer is composed of 100 parts by weight of a polyvinyl acetal resin having an acetalization degree of 60 to 85 mol%, and at least one metal salt of at least one of an alkali metal salt and an alkaline earth metal salt. 1.0 part by weight and a plasticizer of 30 parts by weight or less are included.
- An object of the present invention is to provide an interlayer film for laminated glass and a method for producing the interlayer film for laminated glass, which can enhance transparency. Furthermore, one of the specific objects of the present invention is to provide an interlayer film for laminated glass and a method for producing an interlayer film for laminated glass that can enhance transparency even when different polyvinyl acetal resins are used in combination. is there. Another object of the present invention is to provide a laminated glass using the interlayer film for laminated glass.
- the present invention it is obtained by mixing a first film material containing a first polyvinyl acetal resin and a second film material containing a second polyvinyl acetal resin and a plasticizer.
- the absolute value of the difference between the hydroxyl group content of 1 polyvinyl acetal resin and the hydroxyl content of the second polyvinyl acetal resin contained in the second film material together with the plasticizer is 13 mol% or less.
- the second polyvinyl acetal in which the hydroxyl group content of the first polyvinyl acetal resin is included with the plasticizer in the second film material. It is higher than the hydroxyl group content of the resin.
- the content of the second polyvinyl acetal resin is 100% by weight in total of the first polyvinyl acetal resin and the second polyvinyl acetal resin. It is 0.1 weight% or more and 10 weight% or less.
- the content of the second polyvinyl acetal resin is 0.1% in a total of 100% by weight of all the polyvinyl acetal resins included in the interlayer film. % Or more and 10% by weight or less.
- the second film material is 40 parts by weight or more and 80 parts by weight of the plasticizer with respect to 100 parts by weight of the second polyvinyl acetal resin.
- the first film material is a novel material that is not used for obtaining the interlayer film.
- the second film material is a recovered material used at least once to obtain the interlayer film.
- the interlayer film for laminated glass includes the first film material, the second film material, a third polyvinyl acetal resin, and a plasticizer.
- the third polyvinyl acetal resin contained together with the plasticizer in the third film material, and the hydroxyl content of the first polyvinyl acetal resin.
- the absolute value of the difference from the hydroxyl group content is 13 mol% or less.
- the third polyvinyl acetal in which the hydroxyl group content of the first polyvinyl acetal resin is included together with the plasticizer in the third film material. It is higher than the hydroxyl group content of the resin.
- the third film material is a recovered material used at least once to obtain the interlayer film.
- the first film material including the first polyvinyl acetal resin and the second film material including the second polyvinyl acetal resin and the plasticizer are used to form the first film.
- a step of mixing a material and the second film material to obtain an interlayer film for laminated glass, the hydroxyl group content of the first polyvinyl acetal resin, and the plasticizer in the second film material The manufacturing method of the intermediate film for laminated glasses whose absolute value of the difference with the content rate of the hydroxyl group of the said 2nd polyvinyl acetal resin contained together is 13 mol% or less is provided.
- the content of the hydroxyl group of the first polyvinyl acetal resin is included in the second film material together with the plasticizer. Higher than the hydroxyl group content of the polyvinyl acetal resin.
- the first laminated glass member, the second laminated glass member, and the interlayer film for laminated glass described above are provided, and the first laminated glass member and the second laminated glass are provided.
- the first film material including the first polyvinyl acetal resin, the second polyvinyl acetal resin, and the plasticizer are included.
- An intermediate film is obtained by mixing the second film material, and the hydroxyl content of the first polyvinyl acetal resin and the second polyvinyl acetal contained in the second film material together with the plasticizer Since the absolute value of the difference from the hydroxyl group content of the resin is 13 mol% or less, the transparency of the intermediate film can be increased.
- FIG. 1 is a partially cutaway cross-sectional view schematically showing a multilayer interlayer film including an interlayer film for laminated glass according to the first embodiment of the present invention.
- FIG. 2 is a partially cutaway cross-sectional view schematically showing an interlayer film for laminated glass according to the second embodiment of the present invention.
- FIG. 3 is a partially cutaway cross-sectional view schematically showing an example of a laminated glass using the multilayer intermediate film shown in FIG.
- An interlayer film for laminated glass according to the present invention includes a first film material containing a first polyvinyl acetal resin, a second polyvinyl acetal resin, and a plasticizer. It is obtained by mixing with a second film material containing The absolute value of the difference between the hydroxyl group content of the first polyvinyl acetal resin and the hydroxyl group content of the second polyvinyl acetal resin contained together with the plasticizer in the second film material is 13 mol%. It is as follows. In the intermediate film according to the present invention, the second polyvinyl acetal resin is mixed with the plasticizer before being mixed with the first polyvinyl acetal resin. Therefore, the intermediate film according to the present invention is different from the intermediate film obtained by mixing the first polyvinyl acetal resin, the second polyvinyl acetal resin not mixed with the plasticizer, and the plasticizer.
- the intermediate film according to the present invention has the above-described configuration, the first polyvinyl acetal resin and the second polyvinyl acetal resin that are close in absolute value of the difference in hydroxyl group content are used. In the intermediate film according to the invention, transparency can be enhanced.
- the first film material is a recovered material (collected intermediate film) used at least once to obtain an intermediate film, and the second film material is used at least once to obtain an intermediate film.
- the first film material is a new material (raw material) that has not been used to obtain the intermediate film, and the second film material is an intermediate material. It may be a recovered material (recovery intermediate film) used at least once to obtain a membrane.
- the first membrane material is a recovered material (recovery intermediate) used at least once to obtain an intermediate film.
- the second film material may be a new material (raw material) that is not used to obtain the intermediate film. 4)
- the first film material is used to obtain the intermediate film.
- the configurations 1), 2) and 3) are preferable.
- a configuration is more preferable.
- the configurations 2), 3) and 4) are preferable, and the configuration 4) is preferable. More preferred.
- a third film material containing a polyvinyl acetal resin and a plasticizer may be further used together with the first film material and the second film material.
- the third film material may be a new material (raw material) that has not been used to obtain an intermediate film from the viewpoint of obtaining an intermediate film having stable quality, and enhances recyclability and reduces environmental impact. From this viewpoint, the recovered material (recovered intermediate film) used at least once to obtain the intermediate film may be used.
- the recovered material (collected intermediate film) used at least once to obtain the intermediate film includes unnecessary portions (ears) at both ends of the intermediate film generated in the intermediate film manufacturing process, and intermediate generated in the laminated glass manufacturing process.
- An interlayer film obtained by separating and removing the glass plate from the laminated glass obtained by dismantling the constructed building can be used.
- the unnecessary intermediate film generated in the intermediate film manufacturing process also corresponds to the recovered material used at least once to obtain the intermediate film.
- the new material that is not used to obtain the intermediate film is a newly prepared material, not a recovered material.
- FIG. 1 schematically shows a multilayer interlayer film including an interlayer film for laminated glass according to an embodiment of the present invention in a partially cutaway sectional view.
- the intermediate film 1 is a multilayer intermediate film having a structure of two or more layers.
- the intermediate film 1 has a laminated structure of two or more layers.
- the intermediate film 1 is used to obtain a laminated glass.
- the intermediate film 1 is an intermediate film for laminated glass.
- the intermediate film 1 is opposite to the first layer 2, the second layer 3 disposed on the first surface 2 a side of the first layer 2, and the first surface 2 a of the first layer 2.
- a third layer 4 disposed on the second surface 2b side.
- the second layer 3 is laminated on the first surface 2 a of the first layer 2.
- the third layer 4 is laminated on the second surface 2 b of the first layer 2.
- the first layer 2 is an intermediate layer.
- the second layer 3 and the third layer 4 are, for example, protective layers, and are surface layers in the present embodiment.
- the first layer 2 is disposed between the second layer 3 and the third layer 4 and is sandwiched between them. Therefore, the intermediate film 1 has a multilayer structure in which the
- the surface 3a opposite to the first layer 2 side of the second layer 3 is preferably a surface on which laminated glass members are laminated.
- the surface 4a opposite to the first layer 2 side of the third layer 4 is preferably the surface on which the laminated glass member is laminated.
- the other layer include a layer containing a thermoplastic resin such as polyvinyl acetal resin, and a layer containing polyethylene terephthalate.
- the first layer 2 preferably contains at least one kind of thermoplastic resin, and preferably contains a polyvinyl acetal resin and a plasticizer. More preferably, the second layer 3 preferably includes at least one thermoplastic resin, more preferably includes a polyvinyl acetal resin and a plasticizer, and the third layer 4 includes at least one thermoplastic resin. It is preferable that resin is included, and it is more preferable that polyvinyl acetal resin and a plasticizer are included.
- the first layer 2, the second layer 3, and the third layer 4 is an intermediate film corresponding to the intermediate film according to the present invention.
- the first layer 2 may be an intermediate film corresponding to the intermediate film according to the present invention
- the second layer 3 may be an intermediate film corresponding to the intermediate film according to the present invention.
- the layer 4 may be an intermediate film corresponding to the intermediate film according to the present invention.
- the surface layer is preferably an interlayer film corresponding to the interlayer film according to the present invention. Even if the intermediate film according to the present invention is used as a surface layer (intermediate film), transparency can be improved.
- FIG. 2 schematically shows an interlayer film for laminated glass according to another embodiment of the present invention in a partially cutaway cross-sectional view.
- the intermediate film 31 shown in FIG. 2 is a single-layer intermediate film having a single-layer structure.
- the intermediate film 31 is a first layer.
- the intermediate film 31 is used to obtain a laminated glass.
- the intermediate film 31 is an intermediate film for laminated glass.
- the intermediate film 31 is an intermediate film corresponding to the intermediate film according to the present invention.
- the intermediate film according to the present invention may be used to obtain laminated glass as a single-layer intermediate film such as 1) the intermediate film 31, and 2) multilayered together with other intermediate films as the intermediate film 1 May be used to obtain a laminated glass as a part of the interlayer film 3) used to obtain a laminated glass as each layer of all layers of the multilayer interlayer film as in the interlayer film 1 May be.
- the second layer 3 and the third layer 4 are laminated one by one on both surfaces of the first layer 2. It is only necessary that the second layer is disposed on the first surface side of the first layer. Even if the second layer is disposed on the first surface side of the first layer and the third layer is not disposed on the second surface side of the first layer. Good. However, the second layer is disposed on the first surface side of the first layer, and the third layer is disposed on the second surface side of the first layer. It is preferable. By disposing the third layer on the second surface side of the first layer, the handleability of the intermediate film and the penetration resistance of the laminated glass are further enhanced. Furthermore, the adhesiveness with respect to a laminated glass member etc. can be adjusted with the surface of the both sides of an intermediate film. In addition, when the said 3rd layer does not exist, the adhesiveness with respect to the laminated glass member of the outer surface of the said 2nd layer of an intermediate film can be adjusted.
- the intermediate film includes a polyvinyl acetal resin as a thermoplastic resin.
- the intermediate film may contain a thermoplastic resin different from the polyvinyl acetal resin.
- the first film material and the intermediate film include a first polyvinyl acetal resin.
- the second film material and the intermediate film contain a second polyvinyl acetal resin.
- the third film material includes a third polyvinyl acetal resin.
- the intermediate film may contain a third polyvinyl acetal resin.
- the intermediate film may further contain another thermoplastic resin as long as it contains the first polyvinyl acetal resin and the second polyvinyl acetal resin.
- the second polyvinyl acetal resin and the third polyvinyl acetal resin may be different.
- thermoplastic resin examples include polyvinyl acetal resin, ethylene-vinyl acetate copolymer resin, ethylene-acrylic acid copolymer resin, polyurethane resin, polyvinyl alcohol resin, and polyester resin.
- the hydroxyl content of the first polyvinyl acetal resin is preferably higher than the hydroxyl content of the second polyvinyl acetal resin.
- the absolute value of the difference between the hydroxyl group content of the first polyvinyl acetal resin and the hydroxyl group content of the second polyvinyl acetal resin is 13 mol% or less.
- the absolute value of the difference is preferably 12 mol% or less, more preferably 11 mol% or less, still more preferably 10 mol% or less, and particularly preferably 9. 5 mol% or less, and most preferably 8.5 mol% or less.
- the absolute value of the difference between the hydroxyl group content of the first polyvinyl acetal resin and the hydroxyl group content of the second polyvinyl acetal resin is 0.
- the mol% (identical) or more, 0.5 mol% or more, 1 mol% or more, and 4 mol% or more may be sufficient.
- the hydroxyl content of the first polyvinyl acetal resin is preferably higher than the hydroxyl content of the third polyvinyl acetal resin.
- the absolute value of the difference between the hydroxyl group content of the first polyvinyl acetal resin and the hydroxyl group content of the third polyvinyl acetal resin is preferably Is 9.5 mol% or less, more preferably 5 mol% or less, still more preferably 3 mol% or less, particularly preferably 2 mol% or less, and most preferably 1 mol% or less.
- the absolute value of the difference between the hydroxyl group content of the first polyvinyl acetal resin and the hydroxyl group content of the third polyvinyl acetal resin may be 0 mol% (same) or more, and 0.5 mol % Or more, 1 mol% or more, and 4 mol% or more.
- the hydroxyl group content (hydroxyl group amount) of the first polyvinyl acetal resin is preferably 20 mol% or more, more preferably 25 mol% or more, still more preferably 28 mol% or more, preferably 40 mol% or less, more preferably. Is 36 mol% or less, more preferably 33 mol% or less.
- the hydroxyl group content is not less than the above lower limit, the adhesive strength of the interlayer film is appropriately increased, and the penetration resistance of the laminated glass is further enhanced. Further, when the hydroxyl group content is not more than the above upper limit, the flexibility of the interlayer film is increased, and the handling of the interlayer film is facilitated.
- the hydroxyl group content of the second polyvinyl acetal resin is preferably 10 mol% or more, more preferably 15 mol% or more, still more preferably 17 mol% or more, preferably 30 mol% or less, more preferably 26 mol%. Hereinafter, it is more preferably 24 mol% or less.
- the hydroxyl content of the second polyvinyl acetal resin may be less than 25 mol%.
- the hydroxyl group content (hydroxyl group amount) of the third polyvinyl acetal resin is preferably 20 mol% or more, more preferably 25 mol% or more, preferably 40 mol% or less, more preferably 36 mol% or less.
- the hydroxyl group content is not less than the above lower limit, the adhesive strength of the interlayer film is appropriately increased, and the penetration resistance of the laminated glass is further enhanced. Further, when the hydroxyl group content is not more than the above upper limit, the flexibility of the interlayer film is increased, and the handling of the interlayer film is facilitated.
- the hydroxyl group content of the polyvinyl acetal resin is a value indicating the mole fraction obtained by dividing the amount of ethylene groups to which the hydroxyl group is bonded by the total amount of ethylene groups in the main chain, as a percentage.
- the amount of the ethylene group to which the hydroxyl group is bonded can be determined, for example, by measuring according to JIS K6726 “Testing method for polyvinyl alcohol”.
- the polyvinyl acetal resin can be produced, for example, by acetalizing polyvinyl alcohol with an aldehyde.
- the polyvinyl alcohol can be obtained, for example, by saponifying polyvinyl acetate.
- the saponification degree of the polyvinyl alcohol is generally 70 to 99.9 mol%.
- the average degree of polymerization of the polyvinyl alcohol is preferably 200 or more, more preferably 500 or more, more preferably 1000 or more, more preferably 1500 or more, still more preferably 1600 or more, preferably 3000 or less, more preferably 2700 or less, and further Preferably it is 2400 or less.
- the average degree of polymerization is not less than the above lower limit, the penetration resistance of the laminated glass is further enhanced.
- the average degree of polymerization is not more than the above upper limit, the intermediate film can be easily molded.
- the average degree of polymerization of the polyvinyl alcohol is particularly preferably 1500 or more and 3000 or less.
- the average degree of polymerization of the polyvinyl alcohol is determined by a method based on JIS K6726 “Testing method for polyvinyl alcohol”.
- the carbon number of the acetal group contained in the polyvinyl acetal resin is not particularly limited.
- the aldehyde used when manufacturing the said polyvinyl acetal resin is not specifically limited.
- the acetal group in the polyvinyl acetal resin preferably has 3 to 5 carbon atoms, more preferably 3 or 4. When the carbon number of the acetal group in the polyvinyl acetal resin is 3 or more, the glass transition temperature of the intermediate film is sufficiently low.
- the aldehyde is not particularly limited. In general, an aldehyde having 1 to 10 carbon atoms is preferably used as the aldehyde.
- Examples of the aldehyde having 1 to 10 carbon atoms include formaldehyde, acetaldehyde, propionaldehyde, n-butyraldehyde, isobutyraldehyde, n-valeraldehyde, 2-ethylbutyraldehyde, n-hexylaldehyde, n-octylaldehyde, Examples include n-nonyl aldehyde, n-decyl aldehyde, and benzaldehyde.
- propionaldehyde, n-butyraldehyde, isobutyraldehyde, n-hexylaldehyde or n-valeraldehyde is preferable
- propionaldehyde, n-butyraldehyde or isobutyraldehyde is more preferable
- n-butyraldehyde is still more preferable.
- the said aldehyde only 1 type may be used and 2 or more types may be used together.
- the degree of acetylation (acetyl group amount) of the first polyvinyl acetal resin is preferably 0.1 mol% or more, more preferably 0.4 mol% or more, preferably 20 mol% or less, more preferably 5 mol%. Hereinafter, it is more preferably 2 mol% or less.
- the acetylation degree is not less than the above lower limit, the compatibility between the polyvinyl acetal resin and the plasticizer is increased.
- the acetylation degree is not more than the above upper limit, the moisture resistance of the interlayer film and the laminated glass is increased.
- the degree of acetylation (acetyl group amount) of the second polyvinyl acetal resin is preferably 0.1 mol% or more, more preferably 0.5 mol% or more, still more preferably 10 mol% or more, preferably 30 mol%. Below, more preferably 13 mol% or less.
- the acetylation degree is not less than the above lower limit, the compatibility between the polyvinyl acetal resin and the plasticizer is increased.
- the acetylation degree is not more than the above upper limit, the mechanical strength of the interlayer film is further increased.
- the acetylation degree (acetyl group amount) of the third polyvinyl acetal resin is preferably 0.1 mol% or more, more preferably 0.4 mol% or more, preferably 20 mol% or less, more preferably 5 mol% or less. It is. When the acetylation degree is not less than the above lower limit, the compatibility between the polyvinyl acetal resin and the plasticizer is increased. When the acetylation degree is not more than the above upper limit, the moisture resistance of the interlayer film and the laminated glass is increased.
- the degree of acetylation is obtained by subtracting the amount of ethylene groups to which acetal groups are bonded and the amount of ethylene groups to which hydroxyl groups are bonded from the total amount of ethylene groups of the main chain, It is a value indicating the mole fraction obtained by dividing by the percentage.
- the amount of ethylene group to which the acetal group is bonded can be measured, for example, according to JIS K6728 “Testing method for polyvinyl butyral”.
- the degree of acetalization of the first polyvinyl acetal resin is preferably 55 mol% or more, more preferably 60 mol% or more, still more preferably 65 mol% or more, particularly preferably. Is 72 mol% or more, preferably 85 mol% or less, more preferably 80 mol% or less.
- the degree of acetalization is not less than the above lower limit, the compatibility between the polyvinyl acetal resin and the plasticizer increases.
- the degree of acetalization is less than or equal to the above upper limit, the reaction time required for producing a polyvinyl acetal resin is shortened.
- the degree of acetalization of the second polyvinyl acetal resin is preferably 50 mol% or more, more preferably 60 mol% or more, preferably 85 mol% or less, more preferably It is 80 mol% or less, More preferably, it is 70 mol% or less.
- the degree of acetalization is not less than the above lower limit, the compatibility between the polyvinyl acetal resin and the plasticizer increases.
- the degree of acetalization is less than or equal to the above upper limit, the reaction time required for producing a polyvinyl acetal resin is shortened.
- the degree of acetalization of the third polyvinyl acetal resin is preferably 55 mol% or more, more preferably 60 mol% or more, preferably 85 mol% or less, more preferably 80 mol% or less.
- the degree of acetalization is not less than the above lower limit, the compatibility between the polyvinyl acetal resin and the plasticizer increases.
- the degree of acetalization is less than or equal to the above upper limit, the reaction time required for producing a polyvinyl acetal resin is shortened.
- the above-mentioned degree of acetalization is a value indicating the mole fraction obtained by dividing the amount of ethylene groups to which acetal groups are bonded by the total amount of ethylene groups in the main chain as a percentage.
- the degree of acetalization can be calculated by a method based on JIS K6728 “Testing method for polyvinyl butyral”.
- the hydroxyl group content (hydroxyl content), acetalization degree (butyralization degree), and acetylation degree are preferably calculated from results measured by a method in accordance with JIS K6728 “Testing methods for polyvinyl butyral”. However, measurement by ASTM D1396-92 may be used.
- the polyvinyl acetal resin is a polyvinyl butyral resin
- the hydroxyl group content (hydroxyl amount), the acetalization degree (butyralization degree), and the acetylation degree are determined in accordance with JIS K6728 “Testing methods for polyvinyl butyral”. It can be calculated from the results measured by
- the second polyvinyl acetal resin has an acetylation degree (a) of 8 mol% or less and an acetalization degree (a) of 66 mol% or more. It is preferably a certain polyvinyl acetal resin (A) or a polyvinyl acetal resin (B) having an acetylation degree (b) exceeding 8 mol%.
- the second polyvinyl acetal resin and the third polyvinyl acetal resin may be the polyvinyl acetal resin (A) or the polyvinyl acetal resin (B).
- the degree of acetylation (a) of the polyvinyl acetal resin (A) is 8 mol% or less, preferably 7.5 mol% or less, more preferably 7 mol% or less, still more preferably 6.5 mol% or less, particularly preferably. It is 5 mol% or less, preferably 0.1 mol% or more, more preferably 0.5 mol% or more, still more preferably 0.8 mol% or more, and particularly preferably 1 mol% or more.
- the degree of acetylation (a) is not more than the above upper limit and not less than the above lower limit, the migration of the plasticizer can be easily controlled, and the sound insulation of the laminated glass is further enhanced.
- the degree of acetalization (a) of the polyvinyl acetal resin (A) is 66 mol% or more, preferably 70 mol% or more, more preferably 70.5 mol% or more, still more preferably 71 mol% or more, and particularly preferably 71. 5 mol% or more, most preferably 72 mol% or more, preferably 85 mol% or less, more preferably 83 mol% or less, still more preferably 81 mol% or less, particularly preferably 79 mol% or less.
- the acetalization degree (a) is not less than the above lower limit, the sound insulating properties of the laminated glass are further enhanced.
- the reaction time required in order to manufacture polyvinyl acetal resin (A) as the said acetalization degree (a) is below the said upper limit can be shortened.
- the hydroxyl group content (a) of the polyvinyl acetal resin (A) is preferably at least 18 mol%, more preferably at least 19 mol%, even more preferably at least 20 mol%, particularly preferably at least 21 mol%, most preferably It is 25 mol% or more, preferably 31 mol% or less, more preferably 30 mol% or less, still more preferably 29 mol% or less, and particularly preferably 28 mol% or less.
- the hydroxyl group content (a) is not less than the above lower limit, the adhesive force of the intermediate film is further increased.
- the hydroxyl group content (a) is not more than the above upper limit, the sound insulation of the laminated glass is further enhanced.
- the degree of acetylation (b) of the polyvinyl acetal resin (B) exceeds 8 mol%, preferably 9 mol% or more, more preferably 9.5 mol% or more, still more preferably 10 mol% or more, particularly preferably. 10.5 mol% or more, preferably 30 mol% or less, more preferably 28 mol% or less, still more preferably 26 mol% or less, and particularly preferably 24 mol% or less.
- the acetylation degree (b) is not less than the above lower limit, the sound insulation of the laminated glass is further enhanced.
- the reaction time required in order to manufacture polyvinyl acetal resin (B) as the said acetylation degree (b) is below the said upper limit can be shortened.
- the degree of acetalization (b) of the polyvinyl acetal resin (B) is preferably 50 mol% or more, more preferably 53 mol% or more, still more preferably 55 mol% or more, particularly preferably 60 mol% or more, preferably 80 mol%. % Or less, more preferably 78 mol% or less, still more preferably 76 mol% or less, and particularly preferably 74 mol% or less.
- the acetalization degree (b) is not less than the above lower limit, the sound insulating properties of the laminated glass are further enhanced.
- the reaction time required in order to manufacture polyvinyl acetal resin (B) as the said acetalization degree (b) is below the said upper limit can be shortened.
- the content (b) of the hydroxyl group in the polyvinyl acetal resin (B) is preferably 18 mol% or more, more preferably 19 mol% or more, still more preferably 20 mol% or more, particularly preferably 21 mol% or more, preferably 31. It is not more than mol%, more preferably not more than 30 mol%, still more preferably not more than 29 mol%, particularly preferably not more than 28 mol%, most preferably less than 25 mol%.
- the hydroxyl group content (b) is not less than the above lower limit, the adhesive strength of the interlayer film is further increased.
- the hydroxyl group content (b) is not more than the above upper limit, the sound insulating properties of the laminated glass are further enhanced.
- the first polyvinyl acetal resin, the second polyvinyl acetal resin, and the third polyvinyl acetal resin are each preferably a polyvinyl butyral resin.
- the polyvinyl acetal resin (A) and the polyvinyl acetal resin (B) are each preferably a polyvinyl butyral resin.
- the total content of the first polyvinyl acetal resin and the second polyvinyl acetal resin is preferably 100% by weight or more, and the content of the second polyvinyl acetal resin is preferably 0.1% by weight or more, more preferably. Is 0.5% by weight or more, preferably 10% by weight or less, more preferably 5% by weight or less.
- the content of the second polyvinyl acetal resin is not less than the above lower limit and not more than the above upper limit, the transparency of the intermediate film is effectively increased.
- the content of the second polyvinyl acetal resin is preferably 0.1% by weight or more, more preferably 0.5% by weight or more, preferably Is 10% by weight or less, more preferably 5% by weight or less.
- the transparency of the intermediate film is effectively increased.
- the total content of the first polyvinyl acetal resin and the second polyvinyl acetal resin in a total of 100% by weight of all the polyvinyl acetal resins contained in the interlayer film is preferably 80% by weight or more, more preferably Is not less than 90% by weight, preferably not more than 100% by weight (total amount), preferably not more than 99.9% by weight, more preferably not more than 99.5% by weight, still more preferably not more than 99% by weight, particularly preferably not more than 98% by weight. It is.
- the total content of the first polyvinyl acetal resin and the second polyvinyl acetal resin is not less than the above lower limit and not more than the above upper limit, the transparency of the intermediate film is effectively increased.
- the content of the third polyvinyl acetal resin is preferably 0.1% by weight or more, more preferably 0.5% by weight or more, preferably Is 10% by weight or less, more preferably 5% by weight or less.
- the content of the third polyvinyl acetal resin is not less than the above lower limit and not more than the above upper limit, the transparency of the intermediate film is effectively increased.
- the content (parts by weight) of the second film material with respect to 100 parts by weight of the first film material is not particularly limited, but is preferably 0.5 parts by weight or more, more preferably 0.8 parts by weight or more, and still more preferably 1 Parts by weight, particularly preferably 2 parts by weight or more, most preferably 2.5 parts by weight or more, preferably 15 parts by weight or less, more preferably 13 parts by weight or less, still more preferably 10 parts by weight or less, particularly preferably 8 parts by weight. Or less.
- the content of the second film material with respect to 100 parts by weight of the first film material is not less than the lower limit and not more than the upper limit, the transparency of the intermediate film is effectively increased.
- the intermediate film includes a plasticizer.
- a plasticizer As for the said plasticizer, only 1 type may be used and 2 or more types may be used together.
- plasticizer examples include organic ester plasticizers such as monobasic organic acid esters and polybasic organic acid esters, and organic phosphate plasticizers such as organic phosphoric acid plasticizers and organic phosphorous acid plasticizers. . Of these, organic ester plasticizers are preferred.
- the plasticizer is preferably a liquid plasticizer.
- Examples of the monobasic organic acid ester include glycol esters obtained by a reaction between glycol and a monobasic organic acid.
- Examples of the glycol include triethylene glycol, tetraethylene glycol, and tripropylene glycol.
- Examples of the monobasic organic acid include butyric acid, isobutyric acid, caproic acid, 2-ethylbutyric acid, heptylic acid, n-octylic acid, 2-ethylhexylic acid, n-nonylic acid, and decylic acid.
- polybasic organic acid ester examples include ester compounds of a polybasic organic acid and an alcohol having a linear or branched structure having 4 to 8 carbon atoms.
- polybasic organic acid examples include adipic acid, sebacic acid, and azelaic acid.
- organic ester plasticizer examples include triethylene glycol di-2-ethylpropanoate, triethylene glycol di-2-ethylbutyrate, triethylene glycol di-2-ethylhexanoate, triethylene glycol dicaprylate, Triethylene glycol di-n-octanoate, triethylene glycol di-n-heptanoate, tetraethylene glycol di-n-heptanoate, dibutyl sebacate, dioctyl azelate, dibutyl carbitol adipate, ethylene glycol di-2-ethylbutyrate, 1,3-propylene glycol di-2-ethyl butyrate, 1,4-butylene glycol di-2-ethyl butyrate, diethylene glycol di-2-ethyl butyrate, diethylene glycol di-2-ethyl Hexanoate, dipropylene glycol di-2-ethylbutyrate, triethylene glycol di-2-eth
- organic phosphate plasticizer examples include tributoxyethyl phosphate, isodecylphenyl phosphate, triisopropyl phosphate, and the like.
- the plasticizer is preferably a diester plasticizer represented by the following formula (1).
- R1 and R2 each represent an organic group having 2 to 10 carbon atoms
- R3 represents an ethylene group, an isopropylene group or an n-propylene group
- p represents an integer of 3 to 10
- R1 and R2 in the above formula (1) are each preferably an organic group having 5 to 10 carbon atoms, and more preferably an organic group having 6 to 10 carbon atoms.
- the plasticizer preferably contains triethylene glycol di-2-ethylhexanoate (3GO), triethylene glycol di-2-ethylbutyrate (3GH) or triethylene glycol di-2-ethylpropanoate. More preferably, it contains triethylene glycol di-2-ethylhexanoate or triethylene glycol di-2-ethylbutyrate, and more preferably contains triethylene glycol di-2-ethylhexanoate.
- 3GO triethylene glycol di-2-ethylhexanoate
- GGH triethylene glycol di-2-ethylbutyrate
- triethylene glycol di-2-ethylpropanoate More preferably, it contains triethylene glycol di-2-ethylhexanoate or triethylene glycol di-2-ethylbutyrate, and more preferably contains triethylene glycol di-2-ethylhexanoate.
- the content of the plasticizer (all plasticizers) contained in the intermediate film is preferably 30% with respect to 100 parts by weight of the polyvinyl acetal resin (all polyvinyl acetal resins) contained in the intermediate film. Part or more, more preferably 35 parts by weight or more, preferably 45 parts by weight or less, more preferably 40 parts by weight or less.
- the first film material does not contain a plasticizer or contains a plasticizer in an amount of 50 parts by weight or less based on 100 parts by weight of the first polyvinyl acetal resin.
- the plasticizer content (content (1)) is preferably 10 parts by weight or more, more preferably 20 parts by weight with respect to 100 parts by weight of the first polyvinyl acetal resin. More preferably, it is 30 parts by weight or more, particularly preferably 35 parts by weight or more, preferably 50 parts by weight or less, more preferably 42 parts by weight or less.
- the content of the plasticizer (content (2)) in the second film material is preferably 40 with respect to 100 parts by weight of the second polyvinyl acetal resin. It is at least 60 parts by weight, more preferably at least 60 parts by weight, more preferably at most 95 parts by weight, even more preferably at most 80 parts by weight, particularly preferably at most 72 parts by weight.
- the content of the plasticizer (content (3)) in the third film material is preferably 10 with respect to 100 parts by weight of the third polyvinyl acetal resin. It is at least 20 parts by weight, more preferably at least 20 parts by weight, even more preferably at least 30 parts by weight, particularly preferably at least 35 parts by weight, preferably at most 50 parts by weight, more preferably at most 42 parts by weight.
- the absolute value of the difference between the content (1) and the content (2) and the absolute value of the difference between the content (2) and the content (3) are Each is preferably 10 parts by weight or more, more preferably 15 parts by weight or more, preferably 50 parts by weight or less, more preferably 40 parts by weight or less.
- the content (1) is preferably less than the content (2), and the content (1) is less than the content (3). preferable.
- the intermediate film may contain an antioxidant, an ultraviolet shielding agent, a light stabilizer, a flame retardant, an antistatic agent, a pigment, a dye, an adhesion modifier, a moisture-resistant agent, a fluorescent whitening agent, an infrared absorber, and the like as necessary.
- An additive may be included. As for these additives, only 1 type may be used and 2 or more types may be used together.
- the thickness of the intermediate film according to the present invention is not particularly limited. From the viewpoint of practical use and from the viewpoint of sufficiently increasing the heat shielding property, the thickness of the intermediate film is preferably 0.1 mm or more, more preferably 0.25 mm or more, preferably 3 mm or less, more preferably 1.5 mm or less. is there. When the thickness of the intermediate film is not less than the above lower limit, the penetration resistance of the laminated glass is increased. When the thickness of the interlayer film is not more than the above upper limit, the transparency of the interlayer film is further improved.
- the method for producing the interlayer film according to the present invention is not particularly limited.
- Examples of the method for producing an interlayer film according to the present invention include a method of extruding a resin composition using an extruder when a single-layer interlayer film is obtained.
- Examples thereof include a method of laminating each obtained layer and a method of laminating each layer by co-extrusion of each resin composition for forming each layer using an extruder. Since it is suitable for continuous production, an extrusion method is preferred.
- the method for manufacturing an intermediate film according to the present invention includes mixing the first film material and the second film material using the first film material and the second film material, The process of obtaining.
- the third film material is used, the first film material, the second film material, and the third film material are mixed to obtain an intermediate film.
- FIG. 3 is a cross-sectional view schematically showing an example of a laminated glass using a multilayer interlayer film including the interlayer film for laminated glass according to an embodiment of the present invention.
- the intermediate film 1 is disposed between the first laminated glass member 21 and the second laminated glass member 22 and is sandwiched.
- a first laminated glass member 21 is laminated on the first surface 1 a of the intermediate film 1.
- a second laminated glass member 22 is laminated on a second surface 1 b opposite to the first surface 1 a of the intermediate film 1.
- a first laminated glass member 21 is laminated on the outer surface 3 a of the second layer 3 of the intermediate film 1.
- a second laminated glass member 22 is laminated on the outer surface 4 a of the third layer 4 of the intermediate film 1.
- an intermediate film 31 may be used.
- the laminated glass which concerns on this invention is the 1st laminated glass member, the 2nd laminated glass member, and the intermediate
- the intermediate film includes the intermediate film for laminated glass of the present invention.
- the interlayer film for laminated glass of the present invention may be disposed alone between the first laminated glass member and the second laminated glass member, and together with the other interlayer film, the first laminated glass. You may arrange
- the laminated glass member examples include a glass plate and a PET (polyethylene terephthalate) film.
- Laminated glass includes not only laminated glass in which an intermediate film is sandwiched between two glass plates, but also laminated glass in which an intermediate film is sandwiched between a glass plate and a PET film or the like.
- the laminated glass is a laminate including a glass plate, and preferably at least one glass plate is used.
- Each of the first laminated glass member and the second laminated glass member is preferably a glass plate or a PET film, and the laminated glass is glass as at least one of the first laminated glass member and the second laminated glass member. It is preferable to provide a plate.
- the glass plate examples include inorganic glass and organic glass.
- the inorganic glass examples include float plate glass, heat ray absorbing plate glass, heat ray reflecting plate glass, polished plate glass, mold plate glass, and wire-containing plate glass.
- the organic glass is a synthetic resin glass substituted for inorganic glass.
- examples of the organic glass include polycarbonate plates and poly (meth) acrylic resin plates.
- Examples of the poly (meth) acrylic resin plate include a polymethyl (meth) acrylate plate.
- the thickness of the laminated glass member is preferably 1 mm or more, preferably 5 mm or less, more preferably 3 mm or less.
- the thickness of the glass plate is preferably 1 mm or more, preferably 5 mm or less, more preferably 3 mm or less.
- the thickness of the PET film is preferably 0.03 mm or more, and preferably 0.5 mm or less.
- the method for producing the laminated glass is not particularly limited.
- the intermediate film is sandwiched between the first laminated glass member and the second laminated glass member, passed through a pressing roll, or put in a rubber bag and sucked under reduced pressure, and the first The air remaining between the laminated glass member, the second laminated glass member and the intermediate film is degassed. Thereafter, it is pre-bonded at about 70 to 110 ° C. to obtain a laminate.
- the laminate is put in an autoclave or pressed and pressed at about 120 to 150 ° C. and a pressure of 1 to 1.5 MPa. In this way, a laminated glass can be obtained.
- the interlayer film and the laminated glass can be used for automobiles, railway vehicles, aircraft, ships, buildings, and the like.
- the said intermediate film and the said laminated glass can be used besides these uses.
- the interlayer film and the laminated glass are preferably a vehicle or architectural interlayer film and a laminated glass, and more preferably a vehicle interlayer film and a laminated glass.
- the intermediate film and the laminated glass can be used for an automobile windshield, side glass, rear glass, roof glass, or the like.
- the interlayer film and the laminated glass are suitably used for automobiles.
- the haze value of the laminated glass is preferably 2% or less, more preferably 1% or less, still more preferably 0.5% or less, and particularly preferably 0.4% or less.
- the haze value of the laminated glass can be measured according to JIS K6714.
- thermoplastic resin a polyvinyl acetal resin having a polymerization degree, a hydroxyl group content, an acetylation degree, and an acetalization degree (butyralization degree) shown in Table 1 below was used.
- the polyvinyl acetal resin used is a polyvinyl butyral resin using n-butyraldehyde.
- the degree of acetalization (degree of butyralization), the degree of acetylation, and the content of hydroxyl groups were measured by methods according to JIS K6728 “Testing methods for polyvinyl butyral”. In addition, when measured according to ASTM D1396-92, the same numerical value as the method based on JIS K6728 “Testing method for polyvinyl butyral” was shown.
- Example 1 Preparation of interlayer film: 100 parts by weight of polyvinyl acetal resin (using n-butyraldehyde, hydroxyl group content 29.0 mol%, acetylation degree 0.8 mol%, acetalization degree (butyralization degree) 70.2 mol%), A first film material was obtained by mixing 40 parts by weight of an agent (3GO).
- Laminated glass production The obtained interlayer film (multilayer) was cut into a length of 80 mm ⁇ width of 80 mm. Next, an intermediate film is sandwiched between two transparent float glasses (length 80 mm x width 80 mm x thickness 2.5 mm), held at 90 ° C for 30 minutes with a vacuum laminator, and vacuum pressed to obtain a laminate. It was. In the laminated body, the intermediate film portion protruding from the glass was cut off to obtain a laminated glass.
- Example 2 to 24 Except that the types and contents of the polyvinyl acetal resin, the types and contents of the plasticizer, and the content of the second film material with respect to 100 parts by weight of the first film material are set as shown in Tables 1 to 3 below. Produced an interlayer film and a laminated glass in the same manner as in Example 1.
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Abstract
Description
上記中間膜は、熱可塑性樹脂として、ポリビニルアセタール樹脂を含む。上記中間膜は、ポリビニルアセタール樹脂とは異なる熱可塑性樹脂を含んでいてもよい。上記第1の膜材料及び上記中間膜は、第1のポリビニルアセタール樹脂を含む。上記第2の膜材料及び上記中間膜は、第2のポリビニルアセタール樹脂を含む。上記第3の膜材料は、第3のポリビニルアセタール樹脂を含む。上記中間膜は、第3のポリビニルアセタール樹脂を含んでいてもよい。上記中間膜は、上記第1のポリビニルアセタール樹脂と上記第2のポリビニルアセタール樹脂とを含んでいれば、他の熱可塑性樹脂を更に含んでいてもよい。上記第2のポリビニルアセタール樹脂と上記第3のポリビニルアセタール樹脂とは異なっていてもよい。
上記中間膜は、可塑剤を含む。上記可塑剤は、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。
上記中間膜は、必要に応じて酸化防止剤、紫外線遮蔽剤、光安定剤、難燃剤、帯電防止剤、顔料、染料、接着力調整剤、耐湿剤、蛍光増白剤及び赤外線吸収剤等の添加剤を含んでいてもよい。これらの添加剤は、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。
本発明に係る中間膜の厚みは特に限定されない。実用面の観点、並びに遮熱性を充分に高める観点からは、中間膜の厚みは、好ましくは0.1mm以上、より好ましくは0.25mm以上、好ましくは3mm以下、より好ましくは1.5mm以下である。中間膜の厚みが上記下限以上であると、合わせガラスの耐貫通性が高くなる。中間膜の厚みが上記上限以下であると、中間膜の透明性がより一層良好になる。
図3に、本発明の一実施形態に係る合わせガラス用中間膜を含む多層の中間膜を用いた合わせガラスの一例を模式的に断面図で示す。
実施例及び比較例では、下記の表1に示す重合度、水酸基の含有率、アセチル化度及びアセタール化度(ブチラール化度)を有するポリビニルアセタール樹脂を用いた。用いたポリビニルアセタール樹脂はいずれも、n-ブチルアルデヒドを用いたポリビニルブチラール樹脂である。アセタール化度(ブチラール化度)、アセチル化度及び水酸基の含有率はJIS K6728「ポリビニルブチラール試験方法」に準拠した方法により測定した。なお、ASTM D1396-92により測定した場合も、JIS K6728「ポリビニルブチラール試験方法」に準拠した方法と同様の数値を示した。
3GO(トリエチレングリコールジ-2-エチルヘキサノエート)
中間膜の作製:
ポリビニルアセタール樹脂(n-ブチルアルデヒドを使用、水酸基の含有率29.0モル%、アセチル化度0.8モル%、アセタール化度(ブチラール化度)70.2モル%)100重量部と、可塑剤(3GO)40重量部とを混合し、第1の膜材料を得た。
得られた中間膜(多層)を、縦80mm×横80mmに切り出した。次に、2枚の透明なフロートガラス(縦80mm×横80mm×厚み2.5mm)の間に中間膜を挟み込み、真空ラミネーターにて90℃で30分間保持し、真空プレスし、積層体を得た。積層体において、ガラスからはみ出た中間膜部分を切り落とし、合わせガラスを得た。
ポリビニルアセタール樹脂の種類及び含有量、可塑剤の種類及び含有量、並びに第1の膜材料100重量部に対する第2の膜材料の含有量を下記の表1~3に示すように設定したこと以外は実施例1と同様にして、中間膜及び合わせガラスを作製した。
(1)へーズ値の測定
ヘーズメーター(東京電色社製「TC-HIIIDPK」)を用いて、JIS K6714に準拠して、得られた合わせガラスのヘーズ値を測定した。
1a…第1の表面
1b…第2の表面
2…第1の層(中間膜)
2a…第1の表面
2b…第2の表面
3…第2の層(中間膜)
3a…外側の表面
4…第3の層(中間膜)
4a…外側の表面
11…合わせガラス
21…第1の合わせガラス部材
22…第2の合わせガラス部材
31…中間膜(単層の中間膜)
Claims (13)
- 第1のポリビニルアセタール樹脂を含む第1の膜材料と、第2のポリビニルアセタール樹脂及び可塑剤を含む第2の膜材料とを混合して得られ、
前記第1のポリビニルアセタール樹脂の水酸基の含有率と、前記第2の膜材料中で前記可塑剤と共に含まれる前記第2のポリビニルアセタール樹脂の水酸基の含有率との差の絶対値が13モル%以下である、合わせガラス用中間膜。 - 前記第1のポリビニルアセタール樹脂の水酸基の含有率が、前記第2の膜材料中で前記可塑剤と共に含まれる前記第2のポリビニルアセタール樹脂の水酸基の含有率よりも高い、請求項1に記載の合わせガラス用中間膜。
- 前記第1のポリビニルアセタール樹脂と前記第2のポリビニルアセタール樹脂との合計100重量%中、前記第2のポリビニルアセタール樹脂の含有量が0.1重量%以上、10重量%以下である、請求項1又は2に記載の合わせガラス用中間膜。
- 中間膜に含まれている全てのポリビニルアセタール樹脂の合計100重量%中、前記第2のポリビニルアセタール樹脂の含有量が0.1重量%以上、10重量%以下である、請求項1~3のいずれか1項に記載の合わせガラス用中間膜。
- 前記第2の膜材料が、前記第2のポリビニルアセタール樹脂100重量部に対して、前記可塑剤を40重量部以上、80重量部以下含む、請求項1~4のいずれか1項に記載の合わせガラス用中間膜。
- 前記第1の膜材料が、中間膜を得るために用いられていない新規材料である、請求項1~5のいずれか1項に記載の合わせガラス用中間膜。
- 前記第2の膜材料が、中間膜を得るために少なくとも1回用いられた回収材料である、請求項1~6のいずれか1項に記載の合わせガラス用中間膜。
- 前記第1の膜材料と、前記第2の膜材料と、第3のポリビニルアセタール樹脂及び可塑剤を含む第3の膜材料とを混合して得られ、
前記第1のポリビニルアセタール樹脂の水酸基の含有率と、前記第3の膜材料中で前記可塑剤と共に含まれる前記第3のポリビニルアセタール樹脂の水酸基の含有率との差の絶対値が13モル%以下である、請求項1~7のいずれか1項に記載の合わせガラス用中間膜。 - 前記第1のポリビニルアセタール樹脂の水酸基の含有率が、前記第3の膜材料中で前記可塑剤と共に含まれる前記第3のポリビニルアセタール樹脂の水酸基の含有率よりも高い、請求項8に記載の合わせガラス用中間膜。
- 前記第3の膜材料が、中間膜を得るために少なくとも1回用いられた回収材料である、請求項8又は9に記載の合わせガラス用中間膜。
- 第1のポリビニルアセタール樹脂を含む第1の膜材料と、第2のポリビニルアセタール樹脂及び可塑剤を含む第2の膜材料とを用いて、前記第1の膜材料と前記第2の膜材料とを混合して、合わせガラス用中間膜を得る工程を備え、
前記第1のポリビニルアセタール樹脂の水酸基の含有率と、前記第2の膜材料中で前記可塑剤と共に含まれる前記第2のポリビニルアセタール樹脂の水酸基の含有率との差の絶対値が13モル%以下である、合わせガラス用中間膜の製造方法。 - 前記第1のポリビニルアセタール樹脂の水酸基の含有率が、前記第2の膜材料中で前記可塑剤と共に含まれる前記第2のポリビニルアセタール樹脂の水酸基の含有率よりも高い、請求項11に記載の合わせガラス用中間膜の製造方法。
- 第1の合わせガラス部材と、
第2の合わせガラス部材と、
請求項1~10のいずれか1項に記載の合わせガラス用中間膜とを備え、
前記第1の合わせガラス部材と前記第2の合わせガラス部材との間に、前記合わせガラス用中間膜が配置されている、合わせガラス。
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EP15773726.3A EP3127882B1 (en) | 2014-03-31 | 2015-03-31 | Intermediate film for laminated glasses, method for producing intermediate film for laminated glasses, and laminated glass |
KR1020167019541A KR102340501B1 (ko) | 2014-03-31 | 2015-03-31 | 접합 유리용 중간막, 접합 유리용 중간막의 제조 방법 및 접합 유리 |
RU2016142188A RU2685657C2 (ru) | 2014-03-31 | 2015-03-31 | Промежуточная пленка для многослойных стекол, способ получения промежуточной пленки для многослойных стекол и многослойное стекло |
US15/124,923 US11041054B2 (en) | 2014-03-31 | 2015-03-31 | Intermediate film for laminated glasses, method for producing intermediate film for laminated glasses, and laminated glass |
JP2015518710A JP6505597B2 (ja) | 2014-03-31 | 2015-03-31 | 合わせガラス用中間膜、合わせガラス用中間膜の製造方法及び合わせガラス |
CN201580016691.7A CN106164005B (zh) | 2014-03-31 | 2015-03-31 | 夹层玻璃用中间膜、夹层玻璃用中间膜的制造方法及夹层玻璃 |
MX2016012622A MX2016012622A (es) | 2014-03-31 | 2015-03-31 | Pelicula intermedia para vidrios laminados, metodo para fabricar pelicula intermedia para vidrios laminados, y vidrios laminados. |
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EP (1) | EP3127882B1 (ja) |
JP (1) | JP6505597B2 (ja) |
KR (1) | KR102340501B1 (ja) |
CN (1) | CN106164005B (ja) |
MX (1) | MX2016012622A (ja) |
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KR20200016245A (ko) * | 2017-06-08 | 2020-02-14 | 주식회사 쿠라레 | 접합 유리용 중간막의 재이용 방법 |
KR102004091B1 (ko) * | 2018-03-30 | 2019-07-25 | 에스케이씨 주식회사 | 유리접합용 다층필름, 이를 포함하는 접합유리, 및 이의 제조방법 |
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- 2015-03-31 KR KR1020167019541A patent/KR102340501B1/ko active IP Right Grant
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EP3127882B1 (en) | 2020-10-14 |
RU2016142188A3 (ja) | 2018-10-18 |
EP3127882A4 (en) | 2017-09-13 |
RU2016142188A (ru) | 2018-05-03 |
US20170022335A1 (en) | 2017-01-26 |
EP3127882A1 (en) | 2017-02-08 |
CN106164005A (zh) | 2016-11-23 |
KR20160140579A (ko) | 2016-12-07 |
MX2016012622A (es) | 2017-01-09 |
JP6505597B2 (ja) | 2019-04-24 |
CN106164005B (zh) | 2019-09-27 |
RU2685657C2 (ru) | 2019-04-22 |
JPWO2015152274A1 (ja) | 2017-04-13 |
KR102340501B1 (ko) | 2021-12-20 |
US11041054B2 (en) | 2021-06-22 |
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