JP7435200B2 - 多層構造体 - Google Patents
多層構造体 Download PDFInfo
- Publication number
- JP7435200B2 JP7435200B2 JP2020075181A JP2020075181A JP7435200B2 JP 7435200 B2 JP7435200 B2 JP 7435200B2 JP 2020075181 A JP2020075181 A JP 2020075181A JP 2020075181 A JP2020075181 A JP 2020075181A JP 7435200 B2 JP7435200 B2 JP 7435200B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- evoh
- cyclic olefin
- multilayer structure
- resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 36
- 239000001301 oxygen Substances 0.000 claims description 36
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- 230000035699 permeability Effects 0.000 claims description 15
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- 239000004715 ethylene vinyl alcohol Substances 0.000 description 127
- -1 Hydroxyalkyl vinylidene diacetates Chemical class 0.000 description 64
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- WLQKHRHCTSEXTL-UHFFFAOYSA-N C1C2CCC1C=C2.C1C2CCC1C=C2 Chemical class C1C2CCC1C=C2.C1C2CCC1C=C2 WLQKHRHCTSEXTL-UHFFFAOYSA-N 0.000 description 5
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 5
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- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 5
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- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 4
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- 150000001336 alkenes Chemical class 0.000 description 4
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- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
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- 229920000728 polyester Chemical group 0.000 description 4
- XBFJAVXCNXDMBH-UHFFFAOYSA-N tetracyclo[6.2.1.1(3,6).0(2,7)]dodec-4-ene Chemical compound C1C(C23)C=CC1C3C1CC2CC1 XBFJAVXCNXDMBH-UHFFFAOYSA-N 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- INYHZQLKOKTDAI-UHFFFAOYSA-N 5-ethenylbicyclo[2.2.1]hept-2-ene Chemical compound C1C2C(C=C)CC1C=C2 INYHZQLKOKTDAI-UHFFFAOYSA-N 0.000 description 3
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 description 3
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 3
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- 150000007513 acids Chemical class 0.000 description 3
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- 125000000217 alkyl group Chemical group 0.000 description 3
- 125000003277 amino group Chemical group 0.000 description 3
- 239000003963 antioxidant agent Substances 0.000 description 3
- NIDNOXCRFUCAKQ-UHFFFAOYSA-N bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2C(O)=O NIDNOXCRFUCAKQ-UHFFFAOYSA-N 0.000 description 3
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- FXNMNFAQKCFGGN-UHFFFAOYSA-N pentacyclo[6.6.1.13,6.02,7.09,14]hexadec-4-ene Chemical class C1C(C23)C4CCCCC4C1C3C1C=CC2C1 FXNMNFAQKCFGGN-UHFFFAOYSA-N 0.000 description 3
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- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 3
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- PLSARIKBYIPYPF-UHFFFAOYSA-H trimagnesium dicitrate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O.[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O PLSARIKBYIPYPF-UHFFFAOYSA-H 0.000 description 3
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- LCSLWNXVIDKVGD-KQQUZDAGSA-N (3e,7e)-deca-3,7-diene Chemical class CC\C=C\CC\C=C\CC LCSLWNXVIDKVGD-KQQUZDAGSA-N 0.000 description 2
- XWJBRBSPAODJER-UHFFFAOYSA-N 1,7-octadiene Chemical compound C=CCCCCC=C XWJBRBSPAODJER-UHFFFAOYSA-N 0.000 description 2
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- 229910000358 iron sulfate Inorganic materials 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- LDHQCZJRKDOVOX-IHWYPQMZSA-N isocrotonic acid Chemical compound C\C=C/C(O)=O LDHQCZJRKDOVOX-IHWYPQMZSA-N 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- PJJZFXPJNUVBMR-UHFFFAOYSA-L magnesium benzoate Chemical compound [Mg+2].[O-]C(=O)C1=CC=CC=C1.[O-]C(=O)C1=CC=CC=C1 PJJZFXPJNUVBMR-UHFFFAOYSA-L 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- MYUGVHJLXONYNC-QHTZZOMLSA-L magnesium;(2s)-2-amino-5-hydroxy-5-oxopentanoate Chemical compound [Mg+2].[O-]C(=O)[C@@H](N)CCC(O)=O.[O-]C(=O)[C@@H](N)CCC(O)=O MYUGVHJLXONYNC-QHTZZOMLSA-L 0.000 description 1
- 150000004701 malic acid derivatives Chemical class 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000008268 mayonnaise Substances 0.000 description 1
- 235000010746 mayonnaise Nutrition 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical class CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 1
- UMCSHTKHXAMMQM-UHFFFAOYSA-N methyl 4-methyltetracyclo[6.2.1.13,6.02,7]dodec-9-ene-4-carboxylate Chemical compound C1C(C23)C=CC1C3C1CC2CC1(C)C(=O)OC UMCSHTKHXAMMQM-UHFFFAOYSA-N 0.000 description 1
- ZDFOSSPNFAQIOM-UHFFFAOYSA-N methyl 8-tetracyclo-[4.4.0.12,5.17,10]dodecene-3-carboxylate Chemical compound C1C(C23)C=CC1C3C1CC2CC1C(=O)OC ZDFOSSPNFAQIOM-UHFFFAOYSA-N 0.000 description 1
- RMAZRAQKPTXZNL-UHFFFAOYSA-N methyl bicyclo[2.2.1]hept-2-ene-5-carboxylate Chemical compound C1C2C(C(=O)OC)CC1C=C2 RMAZRAQKPTXZNL-UHFFFAOYSA-N 0.000 description 1
- NKHAVTQWNUWKEO-IHWYPQMZSA-N methyl hydrogen fumarate Chemical compound COC(=O)\C=C/C(O)=O NKHAVTQWNUWKEO-IHWYPQMZSA-N 0.000 description 1
- 229940017219 methyl propionate Drugs 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 235000013536 miso Nutrition 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 150000002762 monocarboxylic acid derivatives Chemical class 0.000 description 1
- 150000002763 monocarboxylic acids Chemical class 0.000 description 1
- LPUQAYUQRXPFSQ-DFWYDOINSA-M monosodium L-glutamate Chemical compound [Na+].[O-]C(=O)[C@@H](N)CCC(O)=O LPUQAYUQRXPFSQ-DFWYDOINSA-M 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- QRWZCJXEAOZAAW-UHFFFAOYSA-N n,n,2-trimethylprop-2-enamide Chemical compound CN(C)C(=O)C(C)=C QRWZCJXEAOZAAW-UHFFFAOYSA-N 0.000 description 1
- 229940088644 n,n-dimethylacrylamide Drugs 0.000 description 1
- YLGYACDQVQQZSW-UHFFFAOYSA-N n,n-dimethylprop-2-enamide Chemical compound CN(C)C(=O)C=C YLGYACDQVQQZSW-UHFFFAOYSA-N 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- JLSBBCYKZLAADL-UHFFFAOYSA-N n-benzylmethanimine Chemical compound C=NCC1=CC=CC=C1 JLSBBCYKZLAADL-UHFFFAOYSA-N 0.000 description 1
- RQAKESSLMFZVMC-UHFFFAOYSA-N n-ethenylacetamide Chemical compound CC(=O)NC=C RQAKESSLMFZVMC-UHFFFAOYSA-N 0.000 description 1
- ZQXSMRAEXCEDJD-UHFFFAOYSA-N n-ethenylformamide Chemical compound C=CNC=O ZQXSMRAEXCEDJD-UHFFFAOYSA-N 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- JFNLZVQOOSMTJK-UHFFFAOYSA-N norbornene Chemical compound C1C2CCC1C=C2 JFNLZVQOOSMTJK-UHFFFAOYSA-N 0.000 description 1
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 150000003891 oxalate salts Chemical class 0.000 description 1
- RPQRDASANLAFCM-UHFFFAOYSA-N oxiran-2-ylmethyl prop-2-enoate Chemical compound C=CC(=O)OCC1CO1 RPQRDASANLAFCM-UHFFFAOYSA-N 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- LQAVWYMTUMSFBE-UHFFFAOYSA-N pent-4-en-1-ol Chemical compound OCCCC=C LQAVWYMTUMSFBE-UHFFFAOYSA-N 0.000 description 1
- HVAMZGADVCBITI-UHFFFAOYSA-M pent-4-enoate Chemical compound [O-]C(=O)CCC=C HVAMZGADVCBITI-UHFFFAOYSA-M 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920006111 poly(hexamethylene terephthalamide) Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 229920006123 polyhexamethylene isophthalamide Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 229920001470 polyketone Polymers 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920005990 polystyrene resin Chemical group 0.000 description 1
- 229920002635 polyurethane Chemical class 0.000 description 1
- 239000004814 polyurethane Chemical class 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000001508 potassium citrate Substances 0.000 description 1
- QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical compound [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 description 1
- HQEROMHPIOLGCB-DFWYDOINSA-M potassium;(2s)-2-aminopentanedioate;hydron Chemical compound [K+].[O-]C(=O)[C@@H](N)CCC(O)=O HQEROMHPIOLGCB-DFWYDOINSA-M 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 229940005657 pyrophosphoric acid Drugs 0.000 description 1
- 150000004053 quinones Chemical class 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 235000012045 salad Nutrition 0.000 description 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 1
- 229960001860 salicylate Drugs 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- 229910021647 smectite Inorganic materials 0.000 description 1
- 235000019265 sodium DL-malate Nutrition 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 1
- 239000001394 sodium malate Substances 0.000 description 1
- 235000019983 sodium metaphosphate Nutrition 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 235000019830 sodium polyphosphate Nutrition 0.000 description 1
- 239000001433 sodium tartrate Substances 0.000 description 1
- 229960002167 sodium tartrate Drugs 0.000 description 1
- 235000011004 sodium tartrates Nutrition 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000010557 suspension polymerization reaction Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 150000003892 tartrate salts Chemical class 0.000 description 1
- KFWJXQDORLWKBB-UHFFFAOYSA-N tetracyclo[6.2.1.13,6.02,7]dodec-9-ene-4-carboxylic acid Chemical compound C1C(C23)C=CC1C3C1CC2CC1C(=O)O KFWJXQDORLWKBB-UHFFFAOYSA-N 0.000 description 1
- UFDHBDMSHIXOKF-UHFFFAOYSA-N tetrahydrophthalic acid Natural products OC(=O)C1=C(C(O)=O)CCCC1 UFDHBDMSHIXOKF-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 150000003609 titanium compounds Chemical class 0.000 description 1
- 235000013337 tricalcium citrate Nutrition 0.000 description 1
- TWQULNDIKKJZPH-UHFFFAOYSA-K trilithium;phosphate Chemical compound [Li+].[Li+].[Li+].[O-]P([O-])([O-])=O TWQULNDIKKJZPH-UHFFFAOYSA-K 0.000 description 1
- 235000015870 tripotassium citrate Nutrition 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 235000019801 trisodium phosphate Nutrition 0.000 description 1
- 229910000406 trisodium phosphate Inorganic materials 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- SDTYFWAQLSIEBH-UHFFFAOYSA-N undec-3-ene Chemical compound CCCCCCCC=CCC SDTYFWAQLSIEBH-UHFFFAOYSA-N 0.000 description 1
- AZGPUOZQDCSPRB-UHFFFAOYSA-N undeca-3,8-diene Chemical compound CCC=CCCCC=CCC AZGPUOZQDCSPRB-UHFFFAOYSA-N 0.000 description 1
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 1
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 229920001866 very low density polyethylene Polymers 0.000 description 1
- KOZCZZVUFDCZGG-UHFFFAOYSA-N vinyl benzoate Chemical compound C=COC(=O)C1=CC=CC=C1 KOZCZZVUFDCZGG-UHFFFAOYSA-N 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- UKRDPEFKFJNXQM-UHFFFAOYSA-N vinylsilane Chemical class [SiH3]C=C UKRDPEFKFJNXQM-UHFFFAOYSA-N 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 239000011670 zinc gluconate Substances 0.000 description 1
- 235000011478 zinc gluconate Nutrition 0.000 description 1
- 229960000306 zinc gluconate Drugs 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Description
本発明の多層構造体を構成するEVOH層(A)は、EVOHのみ、もしくはEVOHを主成分とする樹脂からなる樹脂組成物(以下「EVOH系樹脂組成物」ということがある)によって形成される層であり、後述する乾燥剤(D)がこの層に含有されている。上記EVOHは、通常、エチレンとビニルエステル系モノマーとの共重合体であるエチレン-ビニルエステル系共重合体をケン化させることにより得られる樹脂であり、非水溶性の熱可塑性樹脂である。上記ビニルエステル系モノマーとしては、経済的な面から、一般的には酢酸ビニルが用いられる。
なお、上記エチレン構造単位の含有量は、例えば、ISO14663に基づいて測定することができる。
上記EVOHのケン化度は、JIS K 6726(ただし、EVOHは水/メタノール溶媒に均一に溶解した溶液として用いる)に基づいて測定することができる。
上記MFRは、EVOHの重合度の指標となるものであり、エチレンとビニルエステル系モノマーを共重合する際の重合開始剤の量や、溶媒の量によって調整することができる。
上記コモノマーとしては、プロピレン、1-ブテン、イソブテン等のオレフィン類、3-ブテン-1-オール、3-ブテン-1,2-ジオール、4-ペンテン-1-オール、5-ヘキセン-1,2-ジオール等のヒドロキシ基含有α-オレフィン類やそのエステル化物、アシル化物等の誘導体;2-メチレンプロパン-1,3-ジオール、3-メチレンペンタン-1,5-ジオール等のヒドロキシアルキルビニリデン類;1,3-ジアセトキシ-2-メチレンプロパン、1,3-ジプロピオニルオキシ-2-メチレンプロパン、1,3-ジブチリルオキシ-2-メチレンプロパン等のヒドロキシアルキルビニリデンジアセテート類;アクリル酸、メタクリル酸、クロトン酸、(無水)フタル酸、(無水)マレイン酸、(無水)イタコン酸等の不飽和酸類あるいはその塩あるいはアルキル基の炭素数が1~18であるモノまたはジアルキルエステル類;アクリルアミド、アルキル基の炭素数1~18であるN-アルキルアクリルアミド、N,N-ジメチルアクリルアミド、2-アクリルアミドプロパンスルホン酸あるいはその塩、アクリルアミドプロピルジメチルアミンあるいはその酸塩あるいはその4級塩等のアクリルアミド類;メタアクリルアミド、アルキル基の炭素数が1~18であるN-アルキルメタクリルアミド、N,N-ジメチルメタクリルアミド、2-メタクリルアミドプロパンスルホン酸あるいはその塩、メタクリルアミドプロピルジメチルアミンあるいはその酸塩あるいはその4級塩等のメタクリルアミド類;N-ビニルピロリドン、N-ビニルホルムアミド、N-ビニルアセトアミド等のN-ビニルアミド類;アクリルニトリル、メタクリルニトリル等のシアン化ビニル類;アルキル基の炭素数が1~18であるアルキルビニルエーテル、ヒドロキシアルキルビニルエーテル、アルコキシアルキルビニルエーテル等のビニルエーテル類;塩化ビニル、塩化ビニリデン、フッ化ビニル、フッ化ビニリデン、臭化ビニル等のハロゲン化ビニル化合物類;トリメトキシビニルシラン等のビニルシラン類;酢酸アリル、塩化アリル等のハロゲン化アリル化合物類;アリルアルコール、ジメトキシアリルアルコール等のアリルアルコール類;トリメチル-(3-アクリルアミド-3-ジメチルプロピル)-アンモニウムクロリド、アクリルアミド-2-メチルプロパンスルホン酸等のコモノマーがあげられる。これらは単独でもしくは2種以上併せて用いることができる。
上記EVOH系樹脂組成物において、上記EVOHとともに用いることのできる他の熱可塑性樹脂としては、例えば具体的には、直鎖状低密度ポリエチレン、低密度ポリエチレン、中密度ポリエチレン、高密度ポリエチレン、エチレン-酢酸ビニル共重合体、アイオノマー、エチレン-プロピレン共重合体、エチレン-α-オレフィン(炭素数4~20のα-オレフィン)共重合体、エチレン-アクリル酸エステル共重合体、ポリプロピレン、プロピレン-α-オレフィン(炭素数4~20のα-オレフィン)共重合体、ポリブテン、ポリペンテン等のオレフィンの単独または共重合体、ポリ環状オレフィン、あるいはこれらのオレフィンの単独または共重合体を不飽和カルボン酸またはそのエステルでグラフト変性したもの等の広義のポリオレフィン系樹脂、ポリスチレン系樹脂、ポリエステル、ポリアミド、共重合ポリアミド、ポリ塩化ビニル、ポリ塩化ビニリデン、アクリル系樹脂、ビニルエステル系樹脂、ポリエステルエラストマー、ポリウレタンエラストマー、塩素化ポリエチレン、塩素化ポリプロピレン等があげられる。
例えば具体的には、ポリカプラミド(ナイロン6)、ポリ-ω-アミノヘプタン酸(ナイロン7)、ポリ-ω-アミノノナン酸(ナイロン9)、ポリウンデカンアミド(ナイロン11)、ポリラウリルラクタム(ナイロン12)等のホモポリマーがあげられる。また共重合ポリアミド系樹脂としては、ポリエチレンジアミンアジパミド(ナイロン26)、ポリテトラメチレンアジパミド(ナイロン46)、ポリヘキサメチレンアジパミド(ナイロン66)、ポリヘキサメチレンセバカミド(ナイロン610)、ポリヘキサメチレンドデカミド(ナイロン612)、ポリオクタメチレンアジパミド(ナイロン86)、ポリデカメチレンアジパミド(ナイロン108)、カプロラクタム/ラウリルラクタム共重合体(ナイロン6/12)、カプロラクタム/ω-アミノノナン酸共重合体(ナイロン6/9)、カプロラクタム/ヘキサメチレンジアンモニウムアジペート共重合体(ナイロン6/66)、ラウリルラクタム/ヘキサメチレンジアンモニウムアジペート共重合体(ナイロン12/66)、エチレンジアミンアジパミド/ヘキサメチレンジアンモニウムアジペート共重合体(ナイロン26/66)、カプロラクタム/ヘキサメチレンジアンモニウムアジペート/ヘキサメチレンジアンモニウムセバケート共重合体(ナイロン66/610)、エチレンアンモニウムアジペート/ヘキサメチレンジアンモニウムアジペート/ヘキサメチレンジアンモニウムセバケート共重合体(ナイロン6/66/610)等の脂肪族ポリアミドや、ポリヘキサメチレンイソフタルアミド、ポリヘキサメチレンテレフタルアミド、ポリメタキシリレンアジパミド、ヘキサメチレンイソフタルアミド/テレフタルアミド共重合体、ポリ-p-フェニレンテレフタルアミドや、ポリ-p-フェニレン・3-4’ジフェニルエーテルテレフタルアミド等の芳香族ポリアミド、非晶性ポリアミド、これらのポリアミド系樹脂をメチレンベンジルアミン、メタキシレンジアミン等の芳香族アミンで変性したものやメタキシリレンジアンモニウムアジペート等があげられる。あるいはこれらの末端変性ポリアミド系樹脂であってもよく、好ましくは末端変性ポリアミド系樹脂である。
[Y/(X+Y)]×100≧5 …(1)
本発明に用いられる乾燥剤(D)は、EVOH層(A)におけるEVOHが吸水してガスバリア性が低下することを防止する作用を果たすものである。
上記水和物形成性の金属塩とは、結晶水として水分を吸収しうる塩で、その製造法は限定されないが、例えば、水和物として合成し、それを乾燥脱水したものを用いることができる。乾燥脱水により、完全脱水物(無水物)となっていることが吸湿性の点で好ましいが、部分脱水物(飽和量未満の水和物)であってもよい。
上記EVOH系樹脂組成物は、さらに板状無機フィラーを含有してもよい。上記板状無機フィラーとしては、例えば、含水ケイ酸アルミニウムを主成分とし、粒子が板状となっているカオリン、層状ケイ酸鉱物である雲母やスメクタイト、水酸化マグネシウムとケイ酸塩からなるタルクなどがあげられる。これらのうち、カオリンが好ましく用いられる。カオリンの種類としては、特に限定せず、焼成されていても、いなくてもよいが、好ましくは焼成カオリンである。
本発明に用いられるEVOH系樹脂組成物には、レトルト処理後のガスバリア性をさらに改善する目的で、酸素吸収剤を含有してもよい。上記酸素吸収剤とは、包装される内容物よりも素早く酸素を捕捉する化合物または化合物系である。具体的には、無機系の酸素吸収剤、有機系の酸素吸収剤、無機触媒と有機化合物を組み合わせて用いる複合型酸素吸収剤等があげられる。
本発明に用いられるEVOH系樹脂組成物には、上記成分のほか、必要に応じて、本発明の効果を損なわない限り(例えば、樹脂組成物全体の5重量%未満にて)、エチレングリコール、グリセリン、ヘキサンジオール等の脂肪族多価アルコール等の可塑剤;飽和脂肪族アミド(例えばステアリン酸アミド等)、不飽和脂肪酸アミド(例えばオレイン酸アミド等)、ビス脂肪酸アミド(例えばエチレンビスステアリン酸アミド等)、低分子量ポリオレフィン(例えば分子量500~10000程度の低分子量ポリエチレン、または低分子量ポリプロピレン)等の滑剤;熱安定剤;アンチブロッキング剤;酸化防止剤;着色剤;帯電防止剤;紫外線吸収剤;抗菌剤;不溶性無機塩(例えば、ハイドロタルサイト等);充填材(例えば無機フィラー等);結晶核剤(例えばタルク、カオリン等);界面活性剤、ワックス;分散剤(例えばステアリン酸カルシウム、ステアリン酸モノグリセリド等);共役ポリエン化合物、アルデヒド化合物(例えばクロトンアルデヒド等の不飽和アルデヒド類等)等の公知の添加剤を適宜配合することができる。
つぎに、本発明の多層構造体を構成する接着性樹脂層(B)について説明する。この接着性樹脂層(B)は、上記EVOH層(A)と、後述する環状オレフィン系樹脂(C)とを接着するための層であり、以下の接着性樹脂を用いて得ることができる。
これらは単独で用いても2種以上の混合物として用いてもよい。
つぎに、本発明の多層構造体において、上記接着性樹脂層(B)を介して前記EVOH層(A)に積層される環状オレフィン系樹脂層(C)について説明する。この環状オレフィン系樹脂層(C)は、水蒸気透過度が低い特性を備えており、内側のEVOH層(A)に水分が浸入することを抑制する作用を果たすものである。
ヘプタシクロ-5-エイコセン誘導体としては、ヘプタシクロ-[8.7.0.12,9.14,7.111,17.03,8.012,16]-エイコセン、ヘプタシクロ-5-ヘンエイコセン誘導体としては、ヘプタシクロ-[8.8.0.12,9.14,7.111,18.03,8.012,17]-ヘンエイコセンがあげられる。
例えば、非環状オレフィンがあげられ、具体的にはエチレン、プロピレン、1-ブテン、1-ペンテン、1-ヘキセン、3-メチル-1-ブテン、3-メチル-1-ペンテン、3-エチル-1-ペンテン、4-メチル-1-ペンテン、4-メチル-1-ヘキセン、4,4-ジメチル-1-ヘキセン、4,4-ジメチル-1-ペンテン、4-エチル-1-ヘキセン、3-エチル-1-ヘキセン、1-オクテン、1-デセン、1-ドデセン、1-テトラデセン、1-ヘキサデセン、1-オクタデセン、1-エイコセン等の炭素数2~20
のα-オレフィン;1,4-ヘキサジエン、4-メチル-1,4-ヘキサジエン、5-メチル-1,4-ヘキサジエン、1,7-オクタジエン等の非共役ジエン等があげられる。
これらの共重合可能なモノマーは、それぞれ単独で、または2種以上を組み合わせて使用することができる。
なかでも、反応性や汎用性の点から好ましくは炭素数2~20のα-オレフィンであり、より好ましくは炭素数2~4のα-オレフィンであり、特に好ましくはエチレンである。
すなわち、他の共重合可能なモノマーの含有量は通常1~99モル%であり、好ましくは10~90モル%であり、特に好ましくは30~70モル%である。
その水素添加率は、耐候性および防湿性の観点から、通常95%以上、98%以上がより好ましく、99%以上がさらにより好ましい。ここで水素添加率とは、水素添加前の炭素-炭素二重結合の全モル数に対する、水素添加されたもののモル数の割合で表される。
すなわち、ガラス転移温度が低すぎる場合、レトルト処理時に樹脂が融着する傾向がある。一方、高すぎる場合、加工温度が高くなって加工しにくくなる傾向がある。
つぎに、本発明の多層構造体について説明する。
本発明の多層構造体には、上記積層ユニット(ユニットが単数であっても複数繰り返すものであってもよい)の片方の面もしくは両面に、他の層(E)が少なくとも1層、積層されていてもよい。他の層(E)としては、上記積層ユニットに強度等を付加するための基材層(E1)や、この基材層(E1)と積層ユニットとの接合、あるいは積層ユニット同士の接合のための接着剤層(E2)等があげられる。
<基材層(E1)>
上記基材層(E1)に用いられる材料としては、各種の熱可塑性樹脂(以下「基材樹脂」という)が用いられる。また、本発明の多層構造体を製造する過程で発生する端部や不良品等を再溶融成形して得られるリサイクル樹脂を用いてもよい。このようなリサイクル樹脂には、EVOH層(A)、接着性樹脂層(B)、環状オレフィン系樹脂層(C)、および他の層(E)の溶融混合物を含む。
上記基材層(E1)と積層ユニットとの接合等のための接着剤層(E2)に用いられる接着剤としては、有機チタン化合物、イソシアネート化合物、ポリエステル系化合物、ポリウレタン化合物等の公知の接着剤を使用することができ、上記基材層(E1)を構成する熱可塑性樹脂の種類に応じて適宜選択すればよい。また、基材層(E1)と積層ユニットとの接合、あるいは積層ユニット同士の接合のための層は、接着剤層(E2)の他、前記接着性樹脂層(B)を用いてもよい。
(ii)別途形成した他の層(E)となるフィルム、シート等を、上記積層ユニット(A/B/C)とドライラミネートすることにより形成する方法;
(iii)別途形成した他の層(E)となるフィルム、シート等、あるいはこれらを適宜組み合わせた積層体表面に、上記積層ユニット(A/B/C)となる樹脂を溶融共押出しすることによりラミネートする方法;
(iv)上記積層ユニット(A/B/C)に、他の層(E)となる樹脂の溶液を塗工してから溶媒を除去する方法;
本発明の多層構造体は、一般的な食品の他、マヨネーズ、ドレッシング等の調味料、味噌等の発酵食品、サラダ油等の油脂食品、飲料、化粧品、医薬品等の各種の包装材料容器、包装用フィルム等の包装材料のガスバリア層として好適に用いることができる。
特に、本発明の多層構造体は、熱水処理後のガスバリア性が優れるため、熱水処理を行う食品の包装材料として特に有用である。
A-1:EVOH[エチレン含有量29モル%、ケン化度99.6モル%、MFR3.8g/10分(210℃、荷重2160g)、溶融粘度2200Pa・s(250℃、剪断速度25/秒)、揮発分0.2%]90部と、乾燥剤(D)であるジクエン酸三マグネシウム無水物(Jungbunzlauer社製)10部とを、ミキシングゾーンを2箇所有する二軸押出機にて、溶融混練してなるEVOH系樹脂組成物
A-2:EVOH[エチレン含有量29モル%、ケン化度99.8モル%、MFR3.8g/10分(210℃、荷重2160g)]
B-1:無水マレイン酸変性ポリプロピレン[三井化学社製、「Admer QF551」、融点135℃、溶融粘度926Pa・s(210℃、剪断速度25/秒)]
C-1:環状オレフィン系ポリマー[日本ゼオン社製、「ZEONEX 690R」、ガラス転移温度(Tg)135℃、溶融粘度1600Pa・s(250℃、剪断速度25/秒)]
上記の各成分を用い、3種5層型フィードブロック、多層構造体成形用ダイ、および引取機を有する共押出多層構造体成形装置により、下記条件で共押出を実施し、冷却水の循環するチルロールにより冷却して3種5層の多層構造体(環状オレフィン系樹脂層(C)/接着性樹脂層(B)/EVOH層(A)/接着性樹脂層(B)/環状オレフィン系樹脂層(C)のフィルム)を作製した。各層の構成と厚みは、後記の表1に示すとおりである。
・環状オレフィン系樹脂層(C):40mmφ単軸押出機(バレル温度:240℃)
・EVOH層(A):40mmφ単軸押出機(バレル温度:240℃)
・接着性樹脂層(B):32mmφ単軸押出機(バレル温度:240℃)
・ダイ:4種5層型フィードブロックダイ(ダイ温度:240℃)
・冷却ロール温度:80℃
高温高圧調理殺菌装置(日阪製作所社製、「Flavor Ace RCS-40RTGN」)を用いて、100℃で30分間、レトルト処理を行った後、以下のとおり、各試験片のガスバリア性(酸素透過度)について評価した。
上記レトルト処理後の各試験片に対し、装置から取り出した直後に両表面に付着した水分を完全に取り除いた後、酸素透過率測定装置(MOCON社製、「Ox-Tran2/21」)を用いて、各試験片の酸素透過度(cc/m2.day.atm)を測定し、測定開始から2時間後の値を評価した。したがって、本発明において、「レトルト処理を行った直後」とは、レトルト処理を終えて2時間後のことをいう。
なお、測定条件は、試験片に対し、内側湿度90%RH、外側湿度50%RH、温度23℃、とした。そして、各試験片の厚みが異なるため、厚みの影響をなくすために、測定値は、いずれも厚み20μmでの値に換算した。
Claims (3)
- エチレン-ビニルアルコール系共重合体層(A)と、接着性樹脂層(B)と、環状オレフィン系樹脂層(C)とを備え、上記環状オレフィン系樹脂層(C)が、上記エチレン-ビニルアルコール系共重合体層(A)の少なくとも一方の面に、上記接着性樹脂層(B)を介して積層された多層構造体であって、上記エチレン-ビニルアルコール系共重合体層(A)が乾燥剤(D)を含み、上記環状オレフィン系樹脂層(C)が、ガラス転移温度が120℃以上の環状オレフィン系樹脂からなることを特徴とする多層構造体。
- 上記環状オレフィン系樹脂層(C)の厚みが10μm以上であることを特徴とする請求項1記載の多層構造体。
- 100℃で30分間レトルト処理を行った直後の酸素透過度が、多層構造体の厚みを20μmとして、16cc/m2.day.atm以下であることを特徴とする請求項1または2に記載の多層構造体。
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WO2015053176A1 (ja) | 2013-10-09 | 2015-04-16 | 日本合成化学工業株式会社 | エチレン-ビニルエステル共重合体ケン化物組成物及び当該組成物を用いた多層構造体 |
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