WO2005100440A1 - ポリエステル樹脂およびそれからなるポリエステル成形体並びにポリエステル成形体の製造方法 - Google Patents
ポリエステル樹脂およびそれからなるポリエステル成形体並びにポリエステル成形体の製造方法 Download PDFInfo
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- WO2005100440A1 WO2005100440A1 PCT/JP2005/007024 JP2005007024W WO2005100440A1 WO 2005100440 A1 WO2005100440 A1 WO 2005100440A1 JP 2005007024 W JP2005007024 W JP 2005007024W WO 2005100440 A1 WO2005100440 A1 WO 2005100440A1
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- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229940119177 germanium dioxide Drugs 0.000 description 1
- GGQZVHANTCDJCX-UHFFFAOYSA-N germanium;tetrahydrate Chemical compound O.O.O.O.[Ge] GGQZVHANTCDJCX-UHFFFAOYSA-N 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- RYPKRALMXUUNKS-UHFFFAOYSA-N hex-2-ene Chemical compound CCCC=CC RYPKRALMXUUNKS-UHFFFAOYSA-N 0.000 description 1
- AHAREKHAZNPPMI-UHFFFAOYSA-N hexa-1,3-diene Chemical compound CCC=CC=C AHAREKHAZNPPMI-UHFFFAOYSA-N 0.000 description 1
- RZXDTJIXPSCHCI-UHFFFAOYSA-N hexa-1,5-diene-2,5-diol Chemical compound OC(=C)CCC(O)=C RZXDTJIXPSCHCI-UHFFFAOYSA-N 0.000 description 1
- SGUBCGHCQOJHCM-UHFFFAOYSA-H hexafluoromanganese Chemical compound F[Mn](F)(F)(F)(F)F SGUBCGHCQOJHCM-UHFFFAOYSA-H 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- ZORYZEVTIVPMPO-UHFFFAOYSA-H hexapotassium hexafluoride Chemical compound [F-].[F-].[F-].[F-].[F-].[F-].[K+].[K+].[K+].[K+].[K+].[K+] ZORYZEVTIVPMPO-UHFFFAOYSA-H 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 150000002443 hydroxylamines Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000000415 inactivating effect Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 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 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910001386 lithium phosphate Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 description 1
- 239000004137 magnesium phosphate Substances 0.000 description 1
- 229910000157 magnesium phosphate Inorganic materials 0.000 description 1
- 229960002261 magnesium phosphate Drugs 0.000 description 1
- 235000010994 magnesium phosphates Nutrition 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 238000010128 melt processing Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 1
- ZUYQAYFMISSPTF-UHFFFAOYSA-N methoxy-oxo-phenylphosphanium Chemical compound CO[P+](=O)C1=CC=CC=C1 ZUYQAYFMISSPTF-UHFFFAOYSA-N 0.000 description 1
- CAAULPUQFIIOTL-UHFFFAOYSA-N methyl dihydrogen phosphate Chemical compound COP(O)(O)=O CAAULPUQFIIOTL-UHFFFAOYSA-N 0.000 description 1
- 150000004702 methyl esters Chemical class 0.000 description 1
- MHERPFVRWOTBSF-UHFFFAOYSA-N methyl(phenyl)phosphane Chemical compound CPC1=CC=CC=C1 MHERPFVRWOTBSF-UHFFFAOYSA-N 0.000 description 1
- PMVVRSKJCGEFIY-UHFFFAOYSA-N methylphosphonous acid Chemical compound CP(O)O PMVVRSKJCGEFIY-UHFFFAOYSA-N 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- RXOHFPCZGPKIRD-UHFFFAOYSA-N naphthalene-2,6-dicarboxylic acid Chemical compound C1=C(C(O)=O)C=CC2=CC(C(=O)O)=CC=C21 RXOHFPCZGPKIRD-UHFFFAOYSA-N 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 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
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000020333 oolong tea Nutrition 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229940039748 oxalate Drugs 0.000 description 1
- BBJSDUUHGVDNKL-UHFFFAOYSA-J oxalate;titanium(4+) Chemical compound [Ti+4].[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O BBJSDUUHGVDNKL-UHFFFAOYSA-J 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- QKKWJYSVXDGOOJ-UHFFFAOYSA-N oxalic acid;oxotitanium Chemical compound [Ti]=O.OC(=O)C(O)=O QKKWJYSVXDGOOJ-UHFFFAOYSA-N 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- LIYKJALVRPGQTR-UHFFFAOYSA-M oxostibanylium;chloride Chemical compound [Cl-].[Sb+]=O LIYKJALVRPGQTR-UHFFFAOYSA-M 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical compound [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- MLCHBQKMVKNBOV-UHFFFAOYSA-N phenylphosphinic acid Chemical compound OP(=O)C1=CC=CC=C1 MLCHBQKMVKNBOV-UHFFFAOYSA-N 0.000 description 1
- CGNKSELPNJJTSM-UHFFFAOYSA-N phenylphosphonous acid Chemical compound OP(O)C1=CC=CC=C1 CGNKSELPNJJTSM-UHFFFAOYSA-N 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical class OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 150000003018 phosphorus compounds Chemical class 0.000 description 1
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229950004889 piperamide Drugs 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920006111 poly(hexamethylene terephthalamide) Polymers 0.000 description 1
- 229920006128 poly(nonamethylene terephthalamide) Polymers 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 238000012643 polycondensation polymerization Methods 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920006123 polyhexamethylene isophthalamide Polymers 0.000 description 1
- 229920000137 polyphosphoric acid Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- HKJYVRJHDIPMQB-UHFFFAOYSA-N propan-1-olate;titanium(4+) Chemical compound CCCO[Ti](OCCC)(OCCC)OCCC HKJYVRJHDIPMQB-UHFFFAOYSA-N 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- KCXFHTAICRTXLI-UHFFFAOYSA-N propane-1-sulfonic acid Chemical compound CCCS(O)(=O)=O KCXFHTAICRTXLI-UHFFFAOYSA-N 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- WHFQAROQMWLMEY-UHFFFAOYSA-N propylene dimer Chemical group CC=C.CC=C WHFQAROQMWLMEY-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
- 238000010926 purge Methods 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 229910052701 rubidium Inorganic materials 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- HZJQZHXRILHFBL-UHFFFAOYSA-L sodium oxalate titanium(4+) Chemical compound C(C(=O)[O-])(=O)[O-].[Na+].[Ti+4] HZJQZHXRILHFBL-UHFFFAOYSA-L 0.000 description 1
- 235000013555 soy sauce Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 150000005846 sugar alcohols Chemical class 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-N sulfurothioic S-acid Chemical compound OS(O)(=O)=S DHCDFWKWKRSZHF-UHFFFAOYSA-N 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- IEXRMSFAVATTJX-UHFFFAOYSA-N tetrachlorogermane Chemical compound Cl[Ge](Cl)(Cl)Cl IEXRMSFAVATTJX-UHFFFAOYSA-N 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910000348 titanium sulfate Inorganic materials 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- XROWMBWRMNHXMF-UHFFFAOYSA-J titanium tetrafluoride Chemical compound [F-].[F-].[F-].[F-].[Ti+4] XROWMBWRMNHXMF-UHFFFAOYSA-J 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- MYWQGROTKMBNKN-UHFFFAOYSA-N tributoxyalumane Chemical compound [Al+3].CCCC[O-].CCCC[O-].CCCC[O-] MYWQGROTKMBNKN-UHFFFAOYSA-N 0.000 description 1
- XTTGYFREQJCEML-UHFFFAOYSA-N tributyl phosphite Chemical compound CCCCOP(OCCCC)OCCCC XTTGYFREQJCEML-UHFFFAOYSA-N 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- GGUBFICZYGKNTD-UHFFFAOYSA-N triethyl phosphonoacetate Chemical compound CCOC(=O)CP(=O)(OCC)OCC GGUBFICZYGKNTD-UHFFFAOYSA-N 0.000 description 1
- VOITXYVAKOUIBA-UHFFFAOYSA-N triethylaluminium Chemical compound CC[Al](CC)CC VOITXYVAKOUIBA-UHFFFAOYSA-N 0.000 description 1
- SFENPMLASUEABX-UHFFFAOYSA-N trihexyl phosphate Chemical compound CCCCCCOP(=O)(OCCCCCC)OCCCCCC SFENPMLASUEABX-UHFFFAOYSA-N 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
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 1
- QJAVUVZBMMXBRO-UHFFFAOYSA-N tripentyl phosphate Chemical compound CCCCCOP(=O)(OCCCCC)OCCCCC QJAVUVZBMMXBRO-UHFFFAOYSA-N 0.000 description 1
- HVYVMSPIJIWUNA-UHFFFAOYSA-N triphenylstibine Chemical compound C1=CC=CC=C1[Sb](C=1C=CC=CC=1)C1=CC=CC=C1 HVYVMSPIJIWUNA-UHFFFAOYSA-N 0.000 description 1
- OBROYCQXICMORW-UHFFFAOYSA-N tripropoxyalumane Chemical compound [Al+3].CCC[O-].CCC[O-].CCC[O-] OBROYCQXICMORW-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/88—Post-polymerisation treatment
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/0005—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor characterised by the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/181—Acids containing aromatic rings
- C08G63/183—Terephthalic acids
-
- 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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
- C08L67/03—Polyesters derived from dicarboxylic acids and dihydroxy compounds the dicarboxylic acids and dihydroxy compounds having the carboxyl- and the hydroxy groups directly linked to aromatic rings
Definitions
- Polyester resin polyester molded article comprising the same, and method for producing polyester molded article
- the present invention relates to a polyester resin and a polyester molded article which can be suitably used as a material for molded articles such as hollow molded articles such as beverage bottles, sheet-like articles, stretched films, and the like.
- molded articles such as hollow molded articles such as beverage bottles, sheet-like articles, stretched films, and the like.
- aldehydes such as acetoaldehyde
- the present invention relates to a polyester molded article such as a sheet or stretched film having excellent dimensional stability after molding, and a method for producing a polyester molded article.
- Polyesters whose main repeating unit is ethylene terephthalate are characterized by their excellent transparency, mechanical strength, heat resistance, and gas-no-relativity. It is used as a material for containers such as water, juice and mineral water, and its use has been remarkable. In these applications, polyester bottles are hot-filled with beverages that have been sterilized at a high temperature, and the beverages can be sterilized at a high temperature after the beverages are filled. However, deformation occurs and becomes a problem.
- a method for improving the heat resistance of a polyester bottle a method has been proposed in which the degree of crystallinity is increased by heat-treating the bottle stopper, or the stretched bottle is heat-fixed. In particular, if the stopper is not sufficiently crystallized or if the degree of crystallinity varies greatly, the sealing performance with the cap may be deteriorated and the contents may leak.
- a method of inserting a heat-resistant resin piece into the stopper has been proposed, the productivity of the bottle is poor and there is a problem in recyclability.
- a molded article having excellent transparency and heat-resistant dimensional stability, particularly a small hollow molded article can be efficiently produced by high-speed molding, and the mold is less likely to be soiled.
- Polyester resin excellent in time continuous moldability has been proposed, but the heat treatment time of the bottle plug is long, which is problematic.
- the polyester contains aldehydes such as acetaldehyde (hereinafter sometimes abbreviated as AA) which is a by-product. If the content of aldehydes in the polyester is high, the content of aldehydes in the materials of containers and other packaging formed from this will also increase, affecting the flavor and odor of beverages and the like filled in the containers and the like. Effect.
- AA acetaldehyde
- polyester containers centered on polyethylene terephthalate have come to be used as containers for low-flavor beverages such as mineral water @ oolong tea. Such beverages are generally hot-filled or sterilized by heating after filling, but reducing the acetoaldehyde content of beverage containers is becoming increasingly important.
- metal cans for beverages are manufactured using a metal plate whose inner surface is coated with a polyester film whose main repeating unit is ethylene terephthalate, for the purpose of simplifying the process, improving hygiene, and preventing pollution. The method of canning has come to be adopted.
- the contents are heat-sterilized at a high temperature after filling, and in this case, the use of a film with a sufficiently low acetoaldehyde content is an essential requirement for improving the flavor and odor of the contents. Has become a powerful component.
- a polyester having an intrinsic viscosity of 0.60 to 0.70 dlZg, a specific crystallization temperature at elevated temperature, and a specific crystallization temperature at reduced temperature a method for producing a heat-resistant polyester container which stretch blows a preform from a mixture of a polyester having an intrinsic viscosity of 0.77 to 0.90 dlZg and a specific crystallization temperature at a temperature rise and a specific crystallization temperature at a temperature decrease (for example, However, there is still a problem in obtaining a molded article having stable transparency and a reduced acetoaldehyde content by these methods.
- Patent Document 1 Japanese Patent Publication No. 62-43851
- Patent Document 2 JP-A-10-287799
- Patent Document 3 JP-A-58-45254
- FIG. 1 is a plan view of a stepped molded plate.
- FIG. 3 is a schematic diagram of a water treatment apparatus used in an example.
- the present invention solves the above-mentioned problems of the conventional method, suppresses the generation of aldehydes such as acetoaldehyde during molding, is excellent in transparency, has little fluctuation in transparency, and has a pressure resistance.
- a polyester resin capable of efficiently producing a hollow molded article having excellent heat-resistant dimensional stability, particularly a hollow molded article having excellent pressure resistance and heat-resistant pressure resistance, by high-speed molding, a polyester molded article comprising the same, and a method for producing the same. It is intended to provide. Means for solving the problem
- the present inventors have conducted intensive studies to achieve the above object, and as a result, have reached the present invention.
- the present invention is as follows.
- An aromatic polyester having a repeating unit mainly composed of an aromatic dicarboxylic acid component and a glycol component, wherein the dispersion ratio MwZMn of the molecular weight distribution is 3.00 or more.
- a polyester resin wherein the difference between the crystallization temperature of the polyester B at the time of cooling and the crystallization temperature of the polyester B at the time of cooling is within 18 ° C.
- Polyester A Intrinsic viscosity IV 0.60-0.75 deciliter Z gram, acetoaldehyde
- Polyester whose content is less than lOppm and whose crystallization temperature measured by DSC is 140-178 ° C when heated and 160-190 ° C when cooled.
- Polyester B Intrinsic viscosity IV 0.73-0.90 deciliter Z gram, acetoaldehyde
- Polyester whose content is less than lOppm and whose crystallization temperature measured by DSC is 140-178 ° C when heated and 160-190 ° C when cooled.
- polyester resin according to any one of (1) to (6) which contains 0.1 to 5000 ppm of a fine polyester having the same composition as the polyester.
- the polyester resin according to any one of the above (1) to (7) contains at least one resin selected from the group consisting of a polyolefin resin and a polyacetyl resin.
- the polyester resin described in the above (1) to (8) is melted in a molding machine at a melting resin temperature of 260 to 295 ° C., and the melt residence time in the molding machine is 10 to 500 seconds.
- a method for producing a stretched polyester article comprising stretching the unstretched polyester article obtained by the production method (9) in at least one direction.
- a polyester molded article wherein the molecular weight distribution has a dispersion ratio MwZMn of 3.00 or more.
- the present invention provides a polyester, which gives a molded article having a small amount of aldehydes generated during molding due to improved flow characteristics and having excellent mechanical properties such as pressure resistance when formed into a molded article. It is a fat and has less distortion during molding.It can be used to efficiently produce molded products with excellent heat-resistant dimensional stability, especially hollow molded products by high-speed molding, and it can be used for a long time without polluting the mold. A polyester stretch hollow molded article having excellent moldability and excellent flavor retention is provided.
- the polyester resin of the present invention a polyester molded product comprising the same, and a polyester molded product
- the polyester resin of the present invention is mainly composed of an aromatic dicarboxylic acid component and a glycol component.
- Aromatic polyesters having repeating units with high molecular weight distribution ratio are mainly composed of aromatic dicarboxylic acid component and a glycol component.
- Polyester resin with MwZMn of 3,000 or more By increasing the molecular weight distribution, the melt viscosity of the polymer is reduced, and it can be molded at lower molding temperatures, resulting in aldehydes such as acetaldehyde. Aldehydes can be reduced, and a molded article having a low content of aldehydes can be obtained. In addition, it is advantageous to obtain a bottle with further improved strength. By using the polyester resin of the present invention, there is no problem in the strength of the bottle even if the body thickness is reduced, and a thin-walled bottle can be easily formed. it can.
- the molding temperature can be lowered, so that the formation of cyclic ester oligomers during melt molding can be kept low.
- small hollow molded products can be efficiently produced by high-speed molding.
- a polyester resin having high moldability and excellent long-term continuous moldability that does not stain the mold can be provided.
- a sheet-like material having excellent dimensional stability after molding can be provided.
- the dispersion ratio MwZMn of the aromatic polyester is preferably 3.00 or more, more preferably 3.05 or more, and most preferably 3.10 or more, and the dispersion ratio MwZMn of the molecular weight distribution is 3.00. If it is less than 1, it is necessary to raise the melting temperature during molding in order to maintain transparency, and it is not possible to reduce aldehydes such as acetoaldehyde in the molded product. In addition, the strength of the bottle tends to decrease.
- the dispersion ratios MwZMn and MzZMn of the molecular weight distribution are calculated from the number average molecular weight (Mn), the weight average molecular weight (Mw), and the Z average molecular weight fraction (Mz) obtained by the GPC method using Mw ZMn and MzZMn.
- the dispersion ratio MwZMn of the molecular weight distribution of the aromatic polyester resin can be adjusted to 3.00 or more by blending two or more kinds of polymers having substantially the same composition with different number average molecular weights, and the polymerization conditions (for example, in the case of a continuous polymerization apparatus, a method of increasing the residence time or adjusting the number of polymerization tanks, etc.) may be used, and a method of blending two or more polymers having different molecular weight distributions is preferable.
- the blend may be a molten mixture or a dry blend.
- the polyester resin of the present invention comprises at least two types of polyethers having substantially the same composition.
- the difference in the ultimate viscosity of the polyester is 0.05 to 0.30 dB.
- the difference in crystallization temperature when the polyester is cooled is within 18 ° C.
- the difference in intrinsic viscosity of the polyester is preferably from 0.06 to 0.27 deciliter Z gram, more preferably from 0.07 to 0.23 deciliter Z gram, and particularly preferably from 0.10 to 0.20 deciliter Z gram. .
- the intrinsic viscosity difference is less than 0.05 deciliters Z gram, the content of aldehydes such as acetoaldehyde in the obtained molded product cannot be reduced, and the flavor retention cannot be improved.
- the intrinsic viscosity difference exceeds 0.30 deciliters Z-gram, unevenness in thickness, whitened flow pattern, and the like occur in the obtained molded product, which is problematic.
- the difference in intrinsic viscosity is the difference in intrinsic viscosity between the maximum polyester and the minimum polyester with respect to the intrinsic viscosity. is there.
- the polyester having the maximum intrinsic viscosity is referred to as polyester B and the polyester having the minimum is referred to as polyester A.
- Polyesters having different intrinsic viscosities used in the present invention are polyesters produced in a melt polycondensation reaction step or a subsequent solid phase polymerization reaction step so that the difference in intrinsic viscosities falls within the scope of the present invention. Alternatively, it is a polyester obtained by subjecting them to contact with water under the condition that the intrinsic viscosity does not decrease.
- polyesters having different intrinsic viscosities include a method of hydrolyzing the polyester by heating it with water and a high temperature, and a method of melting the polyester with an extruder.
- the hydrolysis method is carried out in a solid state, so it is very difficult to control the degree of IV reduction.It is difficult to obtain polyester particles with a narrow IV fluctuation range. In this case, fine powder is liable to be generated due to impact during transportation, etc., which causes a problem that the transparency and the crystallization speed of the molded product greatly fluctuate when these are used. The nature and the fluctuations are large, which is a problem.
- the polyester according to the present invention can be hydrolyzed by a method such as heat treatment under pressure with water or the like. It does not include polyesters that have been reduced or polyesters that have been IV reduced by melt processing. Further, the difference in crystallization temperature when the temperature of the polyester is lowered is preferably within 16 ° C, more preferably within 14 ° C, and particularly preferably within 12 ° C. If the difference in the crystallization temperature at the time of the temperature drop exceeds 18 ° C., the transparency of the obtained molded article is extremely poor.
- the mixing ratio of polyester A and polyester B is 95Z5 to 5Z95, preferably 92Z8 to 8Z92, more preferably 90Z10 to LOZ90 by weight ratio. Outside the range, the object of the present invention is not achieved, which is not desirable.
- the polyester resin of the present invention is a mixture of at least two types of polyesters selected from the above-mentioned polyesters A and B, respectively, and the compositions of the polyesters A and B are preferably substantially the same.
- substantially the same means that the acid component and the glycol component in each composition are preferably at least 95 mol%, more preferably at least 97 mol%, particularly at least 98 mol%.
- the difference between the limiting viscosity IV of polyester A and the limiting viscosity IV of polyester B is preferably 0
- the amount is preferably from 0.6 to 0.27 d / g, more preferably from 0.07 to 0.23 d / d, and particularly preferably from 0.1 to 0.20 d / g. If the intrinsic viscosity difference is less than 0.05 deciliters Z gram, the content of aldehydes such as acetoaldehyde in the obtained molded product cannot be reduced, and the flavor retention cannot be improved. If the intrinsic viscosity difference is more than 0.30 deciliters Z gram, the obtained molded product may have uneven thickness, whitened flow pattern, and the like.
- the difference between the crystallization temperature of polyester A at the time of cooling and the crystallization temperature of polyester B at the time of cooling is preferably within 16 ° C, more preferably within 14 ° C, particularly preferably within 12 ° C.
- the difference in the crystallization temperature at the time of the temperature drop exceeds 18 ° C.
- the transparency of the obtained molded article becomes very poor.
- the intrinsic viscosity of polyester affects the crystallization temperature at the time of cooling, and the higher the viscosity, the lower the crystallization temperature at the time of cooling.Therefore, the practical difference in the crystallization temperature at the time of cooling is 2 ° C or more. is there.
- the intrinsic viscosity IV of polyester A is preferably 0.62 to 0.74 deciliters Z gram. Is preferably 0.65 to 0.73 deciliters Z gram, the content of acetoaldehyde is preferably 8 ppm or less, more preferably 5 ppm or less, and the crystallization temperature at the time of heating is preferably 145 to 177 ° C, and The temperature is preferably 150 to 175 ° C, and the crystallization temperature at the time of cooling is preferably 162 to 185 ° C, more preferably 165 to 180 ° C. Intrinsic viscosity of polyester A IV force 0
- the crystallization temperature of the polyester A at the time of heating is lower than 140 ° C, the transparency of the molded body is deteriorated, and if it exceeds 178 ° C, the effect of improving the crystallization speed of the stopper is deteriorated. is there. If the crystallization temperature of the polyester A at the time of cooling is less than 160 ° C, the effect of improving the crystallization speed of the stopper becomes poor, and if it exceeds 190 ° C, the transparency of the molded article becomes poor, which is a problem.
- the intrinsic viscosity IV of the polyester B is preferably
- the acetoaldehyde content is preferably 8 ppm or less, more preferably 5 ppm or less, and crystals at the time of temperature rise
- the crystallization temperature is preferably from 145 to 177 ° C, more preferably from 150 to 175 ° C, and the crystallization temperature upon cooling is preferably from 162 to 185 ° C, more preferably from 165 to 180 ° C.
- the limiting viscosity IV of polyester B is 0.
- the amount is less than 73 deciliters Z grams, the transparency of the obtained molded article becomes poor, which is a problem.
- it exceeds 0.90 deciliters Z gram the heat generation during molding becomes intense and the effect of reducing aldehydes such as acetoaldehyde decreases.
- the content of acetoaldehyde exceeds lOppm the obtained molded product has poor flavor retention, which is a problem.
- the limit is lppm or less.
- the crystallization temperature of the polyester B at the time of raising the temperature is lower than 140 ° C, the transparency of the molded body is deteriorated. If the temperature exceeds 178 ° C, the effect of improving the crystallization speed of the plug is deteriorated. is there. If the crystallization temperature of the polyester B at the time of cooling is lower than 160 ° C, the effect of improving the crystallization speed of the plug becomes poor, and if it exceeds 190 ° C, the transparency of the molded product deteriorates, which is a problem. .
- the polyester of the present invention mainly comprises an aromatic dicarboxylic acid component and a glycol component.
- the thermoplastic polyester obtained is preferably a polyester containing an aromatic dicarboxylic acid unit of at least 70 mol% of an acid component, and more preferably a polyester containing an aromatic dicarboxylic acid unit of at least 85 mol% of an acid component. And polyesters containing aromatic dicarboxylic acid units in an amount of 95 mol% or more of the acid component.
- the aromatic dicarboxylic acid component constituting the polyester of the present invention includes aromatic dicarboxylic acids such as terephthalic acid, 2,6 naphthalenedicarboxylic acid, diphenyl 4,4′-dicarboxylic acid, diphenoxyethane dicarboxylic acid, and the like Derivatives and the like.
- glycol component constituting the polyester of the present invention examples include aliphatic glycols such as ethylene glycol, 1,3 trimethylene glycol and tetramethylene glycol, and alicyclic glycols such as cyclohexanedimethanol.
- the dicarboxylic acids used as the copolymer component when the polyester of the present invention is a copolymer include isophthalic acid, diphenyl 4,4′-dicarboxylic acid, diphenoxyethane dicarboxylic acid, and 4,4′-diphenyl ether.
- Aromatic dicarboxylic acids such as dicarboxylic acid, 4,4'-diphenyl ketone dicarboxylic acid and its functional derivatives, oxyacids such as p-benzobenzoic acid and oxycabroic acid and its functional derivatives, adipic acid, sebacic acid, succinic acid Aliphatic dicarboxylic acids such as acid, dartaric acid and dimer acid and their functional derivatives, alicyclic dicarboxylic acids such as hexahydroterephthalic acid, hexahydroisophthalic acid, and cyclohexanedicarboxylic acid, and their functional derivatives. No.
- Dalicol as a copolymer component used when the polyester of the present invention is a copolymer includes diethylene glycol, 1,3 trimethylene glycol, tetramethylene glycol, pentamethylene glycol, hexamethylene glycol, Ottatamethylene glycol, decamethylene glycol, aliphatic glycols such as 2-ethyl-2-butyl-1,3-propanediol, neopentyl glycol, dimer glycol, 1,2-cyclohexanediol, 1,4-cyclohexanediol, 1 Alicyclic glycols such as 1,1-cyclohexanedimethylol, 1,4-cyclohexanedimethylol, 2,5 norbornanedimethylol, xylylene glycol, 4,4, dihydroxybiphenyl, 2,2 bis (4, - ⁇ -hydroxyethoxyphenyl) propane, Scan (4-hydroxy Hue - Le) sulfollision
- examples of the polyfunctional compound as a copolymer component used when the polyester of the present invention is a copolymer include trimellitic acid and pyromellitic acid as acid components, and glycerin as a glycol component. And pentaerythritol.
- the amount of the above copolymer component to be used must be such that the polyester maintains substantially linear shape.
- a monofunctional compound such as benzoic acid or naphthoic acid may be copolymerized.
- a preferred example of the polyester of the present invention is a polyester whose main structural unit is also composed of ethylene terephthalate, more preferably 70% by mole or more of ethylene terephthalate unit, and isophthalic acid, 1,4-cyclohexanediene as a copolymerization component. It is a copolymerized polyester containing methanol or the like, and particularly preferably a polyester containing 95 mol% or more of ethylene terephthalate units.
- polyesters examples include polyethylene terephthalate (hereinafter abbreviated as PET), poly (ethylene terephthalate ethylene isophthalate) copolymer, poly (ethylene terephthalate-1,4 cyclohexanedimethylene terephthalate) copolymer, (Ethylene terephthalate dioxyethylene terephthalate) copolymer, poly (ethylene terephthalate 1-to-1,3-propylene terephthalate) copolymer, poly (ethylene terephthalate-ethylene cyclohexylene dicarboxylate) copolymer and the like.
- PET polyethylene terephthalate
- PET poly (ethylene terephthalate ethylene isophthalate) copolymer
- Ethylene terephthalate dioxyethylene terephthalate copolymer
- polyester of the present invention is a polyester whose main constituent unit is 1,3-propylene terephthalate, and more preferably a polyester containing 1,3-propylene terephthalate unit in an amount of 70 mol% or more.
- these polyesters are particularly preferred Ino polyester comprising 1, 3-propylene terephthalate and terephthalate units 95 mole 0/0 above, polypropylene terephthalate (PTT), poly (1, 3-propylene terephthalate one 1, 3 Propylene isophthalate) copolymer, poly (1,3 propylene terephthalate- 1,4 cyclohexanedimethylene terephthalate) copolymer And so on.
- PTT polypropylene terephthalate
- poly (1, 3-propylene terephthalate one 1, 3 Propylene isophthalate poly (1,3 propylene terephthalate- 1,4 cyclohexanedimethylene terephthalate
- polyester of the present invention is a polyester whose main constituent unit is butylene terephthalate, more preferably a copolymerized polyester containing at least 70 mol% of butylene terephthalate unit, and particularly preferred.
- Ku is a polyester containing butylene terephthalate units 95 mole 0/0 above.
- polyesters examples include polybutylene terephthalate (PBT), poly (butylene terephthalate butylene isophthalate) copolymer, poly (butylene terephthalate 1,4-cyclohexanedimethylene terephthalate) copolymer, poly (butylene terephthalate) Examples thereof include 1,3-propylene terephthalate) copolymer and poly (butylene terephthalate butylene cyclohexylene dicarboxylate) copolymer.
- main structural unit is ethylene -2, a composed thermoplastic polyester from 6-naphthalate, and more preferably comprises ethylene 2, 6-naphthalate units 70 mole 0/0 or more thermoplastic polyester der is, particularly preferred are heat-friendly plastic polyester comprising ethylene-2, 6-naphthalate units 90 mole 0/0 above.
- thermoplastic polyesters examples include polyethylene 2,6 naphthalate (PEN), poly (ethylene 2,6 naphthalate ethylene terephthalate) copolymer, poly (ethylene 2,6 naphthalate ethylene isophthalate) copolymer, poly ( Ethylene 2,6 naphthalate dioxyethylene 2,6 naphthalate) copolymer.
- polyester of the present invention is a polyester whose main structural unit is composed of 1,4-cyclohexanedimethylene terephthalate.
- mole 0/0 is a copolymerized polyester containing more particularly preferred Ku 1, 4 polyester comprising Cyclohexanedicarboxylic methylene terephthalate tallates units 90 mol% or more to Shikuro.
- thermoplastic polyesters include poly 1,4-cyclohexane dimethylene terephthalate (PCT), poly (1,4 cyclohexane dimethylene terephthalate-ethylene terephthalate) copolymer, and the like.
- the polyester of the present invention can be basically produced by a conventionally known melt polycondensation method or melt polycondensation method-solid state polymerization method.
- the melt polycondensation reaction may be performed in one stage, or may be performed in multiple stages. These may be constituted by a batch type reactor or a continuous type reactor. Further, the melt polycondensation step and the solid phase polymerization step may be operated continuously or may be operated separately.
- PET polyethylene terephthalate
- melt-polycondensed polyester thus obtained is subsequently subjected to solid-phase polymerization.
- the esterification reaction water or alcohol generated by the reaction is removed outside the system by a rectification column under the condition that ethylene glycol is refluxed using a multi-stage apparatus in which at least two esterification reactions are connected in series. While doing.
- the temperature of the first stage of the esterification reaction is 240 to 270 ° C, preferably 245 to 265 ° C, and the pressure is 0.2 to 3 kgZcm 2 G, preferably 0.5 to 2 kgZcm 2 G.
- Temperature of the final stage of the esterification reaction is usually two hundred and fifty to twenty-eight 0 ° C is preferably a 255 ⁇ 275 ° C, the pressure is usually 0 ⁇ 1. 5kgZcm 2 G, preferably 0 ⁇ 1.
- the reaction conditions for the intermediate esterification reaction are those between the above-described first-stage reaction conditions and final-stage reaction conditions.
- the increase in the conversion of these esterification reactions is preferably distributed smoothly at each stage.
- the esterification reaction rate is desired to reach 90% or more, preferably 93% or more.
- the above esterification reaction can be carried out in the absence of a catalyst by the catalytic action of terephthalic acid as an acid, but the reaction is carried out in the presence of a polycondensation catalyst.
- Tertiary amines such as triethylamine, tree n-butylamine, benzyldimethylamine, tetraethylammonium hydroxide, tetran-butylammonium hydroxide, trimethylbenzylammonium hydroxide, etc.
- a basic compound such as quaternary ammonium hydroxide and lithium carbonate, sodium carbonate, potassium carbonate, and sodium acetate
- dioxyethylene in the main chain of polyethylene terephthalate can be obtained. It is preferable because the ratio of the terephthalate component unit can be kept at a relatively low level (5 mol% or less based on all diol components).
- the transesterification reaction uses a device in which one or two transesterification reactors are connected in series, and under the conditions in which ethylene glycol is distilled back, the methanol produced by the reaction is removed outside the system using a rectification column. While doing.
- the temperature of the first-stage transesterification reaction is from 180 to 250 ° C, preferably from 200 to 240 ° C.
- the temperature of the final transesterification reaction is usually 230-270. C, preferably 240-265.
- C and as a transesterification catalyst, a fatty acid salt such as Zn, Cd, Mg, Mn, Co, Ca, or Ba, a carbonate, or a Pb, Zn, Sb, or Ge oxide is used.
- a low-order condensate having a molecular weight of about 200 to 500 can be obtained by these transesterification reactions.
- Examples of the starting materials, dimethyl terephthalate, terephthalic acid and ethylene glycol, include virgin dimethyl terephthalate derived from para-xylene, terephthalic acid, and ethylene glycol.
- Recovered raw materials such as dimethyl terephthalate, terephthalic acid, bishydroxyethyl terephthalate, and ethylene glycol recovered from ET bottles by chemical recycling methods such as methanol decomposition and ethylene glycol decomposition are also used as at least part of the starting materials. You can do it.
- the quality of the recovered raw material must be purified to the purity and quality according to the purpose of use! / Needless to say! /.
- the polycondensation reaction conditions are as follows: the reaction temperature of the first stage polycondensation is 250 to 290 ° C, preferably 260 to 280 ° C, and the pressure is 500 to 20 Torr, preferably 200 to 30 Torr.
- the temperature of the polycondensation reaction is 265-300. C, preferably 275-295. C and the pressure is between 10 and 0.5 Torr, preferably between 5 and 0.5 Torr.
- the reaction conditions for the intermediate polycondensation reaction are those between the above-described first-stage reaction conditions and final-stage reaction conditions. It is preferred that the degree of increase in intrinsic viscosity achieved in each of these polycondensation reaction steps be distributed smoothly. Note that a one-stage polycondensation apparatus may be used for the polycondensation reaction.
- the polycondensation reaction is performed using a polycondensation catalyst.
- a polycondensation catalyst it is preferable to use at least one compound selected from the group consisting of Ge, Sb, Ti, and A1. These compounds are added to the reaction system as a powder, an aqueous solution, an ethylene glycol solution, a slurry of ethylene glycol, or the like.
- Ge compound examples include amorphous germanium dianilide germanium, crystalline dianilide germanium powder or a slurry of ethylene glycol, a solution of crystalline dianilide germanium heated and dissolved in water, or ethylene glycol added thereto. Force of using heat-treated solution, etc.
- the polyester used in the present invention it is preferable to use a solution obtained by heating and dissolving germanium dioxide in water or a solution obtained by adding ethylene glycol to this and heating.
- a solution obtained by heating and dissolving germanium dioxide in water or a solution obtained by adding ethylene glycol to this and heating.
- compounds such as germanium tetroxide, germanium hydroxide, germanium oxalate, germanium chloride, germanium tetraethoxide, germanium tetra-n-butoxide, and germanium phosphite can also be used. These polycondensation catalysts can be added during the esterification process.
- the amount used is preferably 10 to 150 ppm, more preferably 13 to: L00 ppm as the amount of Ge remaining in the polyester. It is preferably 15 to 70 ppm.
- Ti-dye examples include tetraalkyl titanates such as tetraethyl titanate, tetraisopropyl titanate, tetra-n-propyl titanate and tetra-n-butyl titanate, and partial hydrolysates thereof, titanium acetate, tital oxalate, titanyl oxalate.
- tetraalkyl titanates such as tetraethyl titanate, tetraisopropyl titanate, tetra-n-propyl titanate and tetra-n-butyl titanate, and partial hydrolysates thereof, titanium acetate, tital oxalate, titanyl oxalate.
- -Titanium oxalate conjugates such as sodium, titanium sodium oxalate, potassium potassium oxalate, calcium calcium oxalate, titanium strontium oxalate, titanium trimellitate, titanium sulfate, titanium chloride, titanium halide Hydrolyzate, titanium oxalate, titanium fluoride, potassium hexafluoride titanate, ammonium hexafluorotitanate, cobalt hexafluorotitanate, manganese hexafluoride titanate, titanium acetylacetate Titanium complex with nate, hydroxy polycarboxylic acid or nitrogen-containing polycarboxylic acid , A composite oxide of titanium and silicon or zirconium, and a reaction product of a titanium alkoxide and a phosphorous conjugate.
- the Ti compound is added so that the amount of Ti remaining in the produced polymer is in the range of 0.1 to 50 ppm.
- Sb compound examples include antimony trioxide, antimony acetate, antimony tartrate, antimony potassium tartrate, antimony oxychloride, antimony glycolate, antimony pentoxide, triphenylantimony and the like.
- the Sb compound is added so that the residual amount of Sb in the produced polymer is preferably in the range of 50 to 250 ppm.
- Aluminum chelates such as cetacetate di-isopropoxide, organoaluminum compounds such as trimethylaluminum and triethylaluminum, and their partially hydrolyzed products; And the like.
- A1 compound is a polymer produced Add soy sauce so that the remaining amount of Al in the solution is in the range of 5 to 200 ppm.
- an alkali metal compound or an alkaline earth metal compound may be used in combination, if necessary.
- the alkali metal or alkaline earth metal is preferably at least one selected from Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, and Ba. Use is more preferred.
- an alkali metal or a compound thereof it is particularly preferable to use Li, Na, and K.
- Examples of compounds of alkali metals and alkaline earth metals include, for example, saturated aliphatic carboxylic acids such as formic acid, acetic acid, propionic acid, butyric acid and oxalic acid, and unsaturated aliphatic carboxylic acids such as acrylic acid and methacrylic acid.
- saturated aliphatic carboxylic acids such as formic acid, acetic acid, propionic acid, butyric acid and oxalic acid
- unsaturated aliphatic carboxylic acids such as acrylic acid and methacrylic acid.
- aromatic carboxylate such as benzoic acid, halogen-containing carboxylate such as trichloroacetic acid, hydroxy carboxylate such as lactic acid, citric acid, salicylic acid, carbonic acid, sulfuric acid, nitric acid, phosphoric acid, phosphonic acid, hydrogen carbonate
- Inorganic acid salts such as hydrogen phosphate, hydrogen phosphate, sulfurous acid, thiosulfuric acid, hydrochloric acid, hydrobromic acid, chloric acid, bromic acid, etc., 1-prononorenoic acid, 1-pentansnorephonic acid, naphthalenesnolephonic acid
- Organic sulphonates, organic sulfates such as lauryl sulfate, methoxy, ethoxy, ⁇ -propoxy, iso-propoxy, n -butoxy, tert
- Examples include alkoxides such as butoxy, chelates with acetyl acetonate and the like
- the above alkali metal compound or alkaline earth metal compound is added to the reaction system as a powder, an aqueous solution, an ethylene glycol solution or the like.
- the alkali metal compound or alkaline earth metal compound is added so that the residual amount of these elements in the produced polymer is in the range of 1 to 50 ppm.
- the polyester according to the present invention includes silicon, manganese, iron, cobalt, zinc, gallium, strontium, zirconium, niobium, molybdenum, indium, tin, hafnium.
- a metal compound containing at least one selected element may be contained.
- These metal compounds include saturated aliphatic carboxylate such as acetate of these elements, unsaturated aliphatic carboxylate such as acrylate, aromatic carboxylate such as benzoic acid, and trichloroacetic acid.
- Inorganic acid salts such as hydroxycarboxylates such as halogen-containing carboxylate and lactate, and carbonates; organic sulfonates such as propane sulfonate; organic sulfates such as lauryl sulfate; oxides and hydroxides; chloride,
- a chelate compound with alkoxide, acetyl acetonate and the like can be mentioned, and is added to the reaction system as a powder, an aqueous solution, an ethylene glycol solution, a slurry of ethylene glycol, or the like.
- These metal compounds are added so that the residual amount of the elements of these metal compounds per ton of the produced polymer is in the range of 0.05 to 3.0 mol.
- These metal compounds can be added at any stage of the polyester production reaction step.
- the stabilizer examples include phosphoric acid esters such as phosphoric acid, polyphosphoric acid and trimethyl phosphate, phosphonic acid compounds, phosphinic acid compounds, phosphine oxide compounds, phosphinous acid compounds, phosphinous acid compounds, and phosphine compounds. It is preferable to use at least one phosphorous conjugate selected from the group consisting of compounds.
- Specific examples include phosphoric acid, trimethyl phosphate, triethyl phosphate, tributyl phosphate, triethyl phosphate, monomethyl phosphate, dimethyl phosphate, monobutyl phosphate, dibutyl phosphate, dibutyl phosphate, Phosphorous acid, Trimethyl phosphite, Triethyl phosphite, Tributyl phosphite, Methylphosphonic acid, Dimethyl methylphosphonate, Dimethylethylphosphonate, Dimethyl phenylphosphonic acid, Dimethyl phenylphosphonic acid And phenyl ester and phenyl phosphonic acid diphenyl ester.
- stabilizers can be added during the esterification reaction step of the slurry preparation tank of terephthalic acid and ethylene glycol.
- the P compound is added so that the residual amount of P in the produced polymer is preferably in the range of 5 to: LOO ppm.
- the A1 conjugate is used as the polycondensation catalyst, it is preferably used in combination with the phosphorus conjugate and used as a solution or slurry in which the aluminum compound and the phosphorus compound are previously mixed in a solvent. Is preferred.
- more preferred phosphines are phosphonic acid compounds, phosphinic acid compounds, phosphine oxide compounds, phosphonous acid compounds, phosphinous acid compounds, and phosphine compound compounds. It is at least one kind of lindani compound selected from the group.
- the use of these phosphorus conjugates has the effect of improving the catalytic activity and the effect of improving the physical properties such as the thermal stability of the polyester.
- the use of a phosphonic acid-based compound is preferred because the effect of improving the physical properties and the effect of improving the catalytic activity are large.
- the melt polycondensed polyester obtained as described above may be, for example, a method in which the molten polyester is extruded into water from a die pore after the completion of the melt polycondensation, and cut in water. After being extruded into a strand shape from the holes into the air, it is formed into chips in the form of columns, spheres, squares, or plates by cooling with cooling water to form chips. As the cooling water at this time, it is preferable to use cooling water that satisfies at least one of the following (1) to (4), and further to use water that satisfies all of (1) to (4). Is most preferred,.
- the sodium content (Na) in the cooling water is preferably Na ⁇ 0.5 ppm, and more preferably Na ⁇ 0.1 ppm.
- the magnesium content (Mg) in the cooling water is preferably Mg ⁇ 0.5 ppm, more preferably Mg ⁇ 0.1 ppm.
- the content (Si) of silicon in the cooling water is preferably Si ⁇ 0.5 ppm, and more preferably Si ⁇ 0.3 ppm.
- the calcium content (Ca) in the cooling water is preferably Ca ⁇ 0.5 ppm, and more preferably Ca ⁇ 0.1 ppm.
- a device that removes sodium, magnesium, calcium, and silicon will be installed in at least one place before the industrial water is sent to the chip cooling process.
- a filter is installed in order to remove clay minerals such as silicon dioxide and aluminosilicate which have become particulate.
- an apparatus for removing sodium, magnesium, calcium, and silicon include an ion exchange apparatus, an ultrafiltration apparatus, and a reverse osmosis membrane apparatus.
- the melt polycondensation polyester chip in the first stage is preliminarily crystallized in an inert gas atmosphere by a continuous crystallizer having two or more stages.
- the first-stage pre-crystallization takes 1 minute to 5 hours at a temperature of 100 to 180 ° C
- the second-stage pre-crystallization takes 1 minute to 3 hours at a temperature of 160 to 210 ° C.
- Second time under time conditions it is preferable that the crystallization is carried out stepwise at 180 to 210 ° C for 1 minute to 3 hours.
- the crystallinity of the chip after crystallization is preferably in the range of 30 to 65%, preferably 35 to 63%, and more preferably 40 to 60%. The crystallinity can be determined from the chip density.
- solid-state polymerization is performed under an inert gas atmosphere or under reduced pressure at an optimum temperature for the prepolymer, such that the increase in intrinsic viscosity due to solid-state polymerization is 0.10 deciliters Z gram or more.
- the upper limit of the solid-state polymerization temperature is preferably 215 ° C or lower, more preferably 210 ° C or lower, and particularly preferably 208 ° C or lower, and the lower limit is 190 ° C or higher. , Preferably 195 ° C or higher.
- the chip temperature is reduced to about 70 ° C or less, preferably 60 ° C or less, more preferably 50 ° C or less within about 30 minutes, preferably within 20 minutes, more preferably within 10 minutes. Is preferred.
- the main repeating unit of the polyester of the present invention is a polyester which also has an ethylene-1,6-naphthalate force (hereinafter sometimes abbreviated as PEN)
- the intrinsic viscosity of at least two kinds of polyesters is 0.40.
- a polyester force in the range of .about.0.80 deciliters Z gram, preferably 0.42 to 0.75 deciliters per gram, more preferably 0.45 to 0.70 deciliters per gram is selected. If the IV is less than 0.40 deciliters Z gram, the mechanical properties of the obtained molded article are poor. If the amount exceeds 0.80 deciliters Z gram, it is necessary to raise the resin temperature at the time of melting by a molding machine, which leads to thermal decomposition. Problems such as yellowing of the body occur.
- polyester C and polyester D are contained as main components, and the crystallization temperature of polyester C at the time of cooling and the crystallization temperature of polyester D at the time of cooling are reduced. It is preferable that the polyester resin has a difference within 18 ° C.
- Polyester C Intrinsic viscosity IV is 0.40 to 0.70 deciliter
- Polyester having a crystallization temperature of 180 to 235 ° C when heated and a crystallization temperature of 160 to 210 ° C when cooled, as measured by AZ grams and DSC.
- Polyester D Intrinsic viscosity IV is 0.50-0.80 deciliter
- the intrinsic viscosity of at least two kinds of polyesters is 0.50 to 1.00 deciliter Z gram
- Polyesters in the range of preferably 0.55 to 0.90 deciliters Z gram, more preferably 0.60 to 0.85 deciliters Z gram are selected within the scope of the present invention. If the intrinsic viscosity is less than 0.50 deciliters Z gram, there is a problem that the mechanical properties of the obtained molded body are deteriorated.
- the upper limit of the intrinsic viscosity is 1.00 deciliters Z gram. If it exceeds this, the aldehydes whose molecular weight decreases rapidly due to the high resin temperature during molding and the severe thermal decomposition. Problems occur, such as intense generation and coloring of yellow.
- the polyester resin of the present invention contains at least two kinds of polyesters as the main components as described above, the type and amount of the above-mentioned polycondensation catalyst, melt polycondensation, solid-state polymerization conditions, and the like are determined. It can be manufactured by appropriately controlling. Further, it can be obtained by a method of giving an impact to the polyester chip thus obtained, or a method of blending a polyolefin resin, particularly a polyethylene, polyamide resin, polyoxymethylene resin or the like as described below. .
- the ratio of the terminal carboxyl group to the total number of terminal groups of the at least one polyester constituting the polyester resin of the present invention is 5 to 30 equivalent%, preferably 8 to 28 equivalent%, and more preferably 9 to 26 equivalent%. %, Particularly preferably 10-25 equivalent%. If a polyester having a ratio of terminal carboxyl groups to the total number of terminal groups of less than 5 equivalent% is to be obtained, the solid-phase polymerization time in the production of such polyesters becomes extremely long, which raises the problem of economical efficiency. The generation of aldehydes such as aldehydes increases, which is a problem.
- dialkylene glycol content that is copolymerized into the polyester of the present invention, from 0.5 to 7 glycol component constituting the front Symbol polyester. 0 mole 0/0, preferably from 1.0 to 6 . 0 mole 0/0, more preferably 1.5 to 5.0 mol 0/0, more preferably 1. Ru 5 to 4.0 mole 0/0 der.
- dialkylene glycol content preparing polyesters of less than 0.5 mole 0/0, transesterification conditions, Esuterui spoon condition or it is necessary to select the uneconomic production conditions as the polymerization conditions, the cost Do not fit.
- the dialkylene glycol copolymerized in the polyester is, for example, in the case of a polyester whose main structural unit is ethylene terephthalate, diethylene glycol by-produced at the time of production from ethylene glycol which is a glycol (hereinafter referred to as “DEG” t).
- the glycol 1,3-propylene Glycol power is also selected from di (1,3-propylene glycol) (or bis (3-hydroxypropyl) ether) by-produced during production, and di (1,3-propylene glycol (hereinafter referred to as DPG) copolymerized with the polyester. In some cases).
- the main repeating unit of diethylene glycol copolymerized polyester composed of ethylene terephthalate amount of glycol Ingredients constituting the polyester from 1.0 to 5.0 mole 0/0, preferably 1. 3 to 4.5 mole 0/0, more preferably 1.5 to 4.0 molar%. If the amount of diethylene glycol exceeds 5.0 mol%, the thermal stability becomes poor, the molecular weight decreases during molding, and the acetoaldehyde content and formaldehyde content increase, which is not preferable. When the content of diethylene glycol is less than 1.0 mol%, the transparency of the obtained molded article is deteriorated.
- diethylene glycol and triethylene glycol are by-produced partially from ethylene glycol during the polymerization reaction, and thus DEG and Z or TEG and its ester-forming derivatives
- TEG triethylene glycol
- the contents of the DEG component and the Z or TEG component can be controlled only by appropriately selecting reaction conditions, additives, and the like.
- triethylamido Tertiary amines such as butylamine, tree n-butylamine, benzyldimethylamine, and hydroxylamines such as tetraethylammonium hydroxide, tetrabutylammonium hydroxide, and trimethylbenzylammonium hydroxide.
- a small amount of a quaternary ammonium and a basic conjugate such as lithium carbonate, sodium carbonate, potassium carbonate, and sodium acetate can be added to suppress the formation of DEG, Z, or TEG.
- DEG, Z or TEG if a small amount of an inorganic acid such as sulfuric acid is added to the raw material for polymerization, the formation of DEG, Z or TEG can be promoted and the content can be increased.
- these additives for controlling the amount of DEG, Z or TEG are used, if necessary, usually in the range of 0.001 to 10% by weight, preferably in the range of 0.005 to 1% by weight, based on the whole polymerization raw material. Hey.
- the content of aldehydes such as acetoaldehyde in the polyester resin of the present invention is desirably 50 ppm or less, preferably 30 ppm or less, and more preferably 10 ppm or less. If the aldehyde content exceeds 50 ppm, the effect of maintaining the flavor of the contents such as a molded article is deteriorated due to such polyester power. Further, these lower limits are preferably 0.1 lppb in view of manufacturing problems.
- the aldehydes are acetoaldehyde when the polyester is a polyester mainly composed of ethylene terephthalate or a polyester mainly composed of ethylene naphthalate, and 1,3-propylene terephthalate is used. In the case of polyester as the main structural unit, it is arylaldehyde.
- the polyester resin of the present invention when the polyester resin of the present invention is composed of a polyester resin having ethylene terephthalate as a main repeating unit, and is used as a material for containers for low-flavor beverages such as S-mineral water, the polyester resin may be used.
- the acetoaldehyde content of the polyester resin of the present invention is 10 ppm or less, preferably 6 ppm or less, more preferably 5 ppm or less, and most preferably 4 ppm or less. If the acetoaldehyde content exceeds 10 ppm, the odor and taste of the contents of a molded article molded from this polyester resin are adversely affected, resulting in a loss of commercial value and a problem.
- the free ethylene glycol content and the free diethylene glycol content of the polyester resin may be 30 ppm or less and 10 ppm or less, preferably 20 ppm or less and 7 ppm or less, more preferably 15 ppm or less and 5 ppm or less, respectively. preferable. If the free ethylene glycol content exceeds 30 ppm or if the free diethylene glycol content exceeds 10 ppm, the resulting polyester molded article has a free ethylene glycol content exceeding 50 ppm or a free diethylene glycol content of 20 ppm. Therefore, the flavor retention of the stretched hollow molded article is deteriorated, which is a problem.
- the lower limits of the content of free ethylene glycol and the content of free ethylene glycol in the polyester resin are 5 ppm and 1 ppm, respectively, from the viewpoint of economy.
- the content of the cyclic ester oligomer of the polyester resin of the present invention is 70% or less, preferably 60% or less, more preferably 60% or less, of the content of the cyclic ester oligomer contained in the melt polycondensation polyester prepolymer of the polyester. It is preferably at most 50%, particularly preferably at most 35%.
- the polyester generally contains cyclic ester oligomers having various degrees of polymerization.
- the cyclic ester oligomer is the largest content of the cyclic ester oligomer contained in the polyester. Represents a highly cyclic ester oligomer.
- a polyester containing ethylene terephthalate as a main repeating unit it means a cyclic trimer.
- the content of the cyclic trimer of the molten polycondensed polyester prepolymer is about 1.0% by weight.
- the cyclic trimer content of the resin should be 0.70% by weight or less, preferably 0.60% by weight or less, more preferably 0.50% by weight or less, and particularly preferably 0.35% by weight or less. Is preferred.
- the lower limit of the content of the cyclic trimer is 0.20% by weight or more, preferably 0.22% by weight or more, more preferably 0.25% by weight or more from the viewpoint of economic production.
- the content of the cyclic trimer is 0.70% by weight or more, the adhesion of oligomers to the gas exhaust port of the unstretched molded body and the surface of the heat-fixing mold after stretch molding rapidly increases.
- the transparency of the obtained hollow molded article or the like is extremely deteriorated.
- the polyester resin of the present invention is a polyester having ethylene terephthalate as a main repeating unit and is used for molding a highly heat-resistant hollow molded body, heat treatment is performed in a heating mold.
- the content of the cyclic trimer is preferably 0.50% by weight or less, preferably 0.40% by weight or less, and more preferably 0.35% by weight or less.
- the fine content of the polyester resin of the present invention is preferably 0.1 to 5000 ppm.
- the fine content is preferably 0.1 to 3000 ppm, more preferably 0.1 to: LOOO ppm, further preferably 0.1 to 500 ppm, and most preferably 0.1 to: LOO ppm.
- the crystallization speed will be very slow, and the crystallization of the plug of the hollow molded container will be insufficient, and the shrinkage of the plug will fall within the specified range.
- the mold In order to obtain a transparent hollow-molded container in which the mold cannot be cleaned because it does not fit inside and cannot be cavitated, or a heat-resistant hollow molded container is stretched and heat-fixed, the mold must be cleaned frequently. I have to. If the concentration exceeds 5000 ppm, the crystallization speed becomes faster than necessary, and the fluctuation of the speed becomes large. Therefore, in the case of a sheet-like material, the transparency and surface state are deteriorated, and when it is stretched, the unevenness in thickness is deteriorated.
- the crystallinity of the plug portion of the hollow molded article becomes excessively large and fluctuates, and the shrinkage of the plug portion does not fall within the specified value range, resulting in poor cabling of the plug portion and leakage of the contents.
- the unstretched molded article for hollow molded articles is whitened, which makes normal stretching impossible.
- the fine content of the polyester resin for the hollow molded article is preferably 0.1 to 500 ppm.
- the difference between the melting point of fine and the melting point of the polyester chip contained in the polyester of the present invention is preferably 15 ° C. or less, more preferably 10 ° C. or less, and further preferably 5 ° C. or less.
- the difference includes fines exceeding 15 ° C.
- the crystals do not completely melt under the commonly used melt molding conditions and remain as crystal nuclei.
- the crystallization speed of the hollow plug is increased when the hollow plug is heated, and the crystallization of the hollow plug becomes excessive.
- the unstretched molded article for hollow molding is whitened, so that normal stretching cannot be performed, uneven thickness occurs, and the crystallization speed is high, so that the obtained hollow molded article has poor transparency and transparency. Also becomes large.
- the polyester resin of the present invention contains at least one resin selected from the group consisting of polyolefin resin, polyamide resin and polyacetal resin as described below, these resins are generally In many cases, the thermal stability is inferior to the polyester of the present invention. Therefore, in the high-temperature molding as described above, since a large amount of by-products is generated due to thermal decomposition, the obtained molded product, etc. This will have a greater effect on the flavor of the contents.
- polyester resin of the present invention is PET, fine or film-like materials having a melting point exceeding 265 ° C. are problematic.
- the melting point of the fine is measured by the following method using a differential scanning calorimeter (DSC) .
- the melting peak temperature representing the melting point of the fine is composed of one or more melting peaks.
- the peak temperature is determined when the melting peak force is high, and the melting peak on the highest temperature side is selected from the plurality of melting peaks when there are a plurality of melting peaks.
- the peak temperature is referred to as “the highest peak temperature of the melting peak temperature of fine”, and is referred to as “the melting point of fine” in Examples and the like.
- the amount of the cyclic trimer increases by 0.5% by weight or less, preferably 0.3% by weight or less. It is preferably 0.1% by weight or less. If the amount of the cyclic trimer increases by 0.50% by weight when melted at a temperature of 290 ° C for 60 minutes, the amount of the cyclic trimer increases during melting of the molding resin, and the amount of the cyclic trimer increases to the heating mold surface. Oligomer adhesion rapidly increases, and the transparency of the obtained hollow molded article and the like becomes extremely poor.
- the polyester resin of the present invention in which the amount of increase of the cyclic trimer when melted at a temperature of 290 ° C. for 60 minutes is 0.50% by weight or less, is obtained by polyester obtained after melt polycondensation or solid phase polymerization. Can be produced by inactivating the polycondensation catalyst.
- Examples of the method for deactivating the polycondensation catalyst of the polyester resin include a method of subjecting the polyester chip to contact treatment with water, steam or a steam-containing gas after melt polycondensation or after solid-phase polymerization.
- a method for treating a polyester chip with water, steam, or a steam-containing gas to achieve the above object will be described below.
- the hot water treatment method include a method of immersing in water and a method of spraying water on a chip with a shower.
- the treatment time is 5 minutes to 2 days, preferably 10 minutes to 1 day, more preferably 30 minutes to 10 hours, and the water temperature is 20 to 180 ° C, preferably 40 to 150 ° C. Preferably it is 50 to 120 ° C.
- the treatment method may be either a continuous method or a batch method, but a continuous method is preferable for industrial use.
- a silo-type treatment tank may be used.
- polyester chips are received in a silo in a batch system to perform water treatment.
- the polyester chips When the polyester chips are treated with water in a continuous manner, the polyester chips can be continuously or intermittently received in the tower-type treatment tank from above and subjected to water treatment.
- Figure 1 shows this conceptual diagram.
- the granular polyester is brought into contact with steam.
- the contact between the polyester chip and water vapor is usually performed for 10 minutes to 2 days, preferably for 20 minutes to 10 hours.
- the method of industrially performing the contact treatment between the granular polyester and steam or a steam-containing gas will be exemplified below, but the method is not limited thereto.
- the processing method may be a continuous method or a batch method, or may be shifted.
- a silo-type treatment apparatus When a polyester chip is subjected to a contact treatment with steam in a batch system, a silo-type treatment apparatus may be used. That is, polyester chips are received in a silo, and steam or a gas containing steam is supplied in a batch mode to perform a contact treatment. Alternatively, the granular polyester can be received in a rotary cylinder type contact treatment device, and the contact treatment can be performed while rotating the contact, thereby making the contact more efficient. When the polyester chips are continuously subjected to the contact treatment with steam, the granular polyester can be continuously received from the top in a tower-type treatment device, and the steam can be continuously supplied in cocurrent or countercurrent to carry out the contact treatment with the steam.
- the granular polyester When treated with water or steam as described above, the granular polyester is drained with a draining device such as a vibrating sieve or a Simon Carter if necessary, and transferred to the next drying step.
- a draining device such as a vibrating sieve or a Simon Carter if necessary
- Drying of polyester chips that have been subjected to contact treatment with water or steam can be carried out by a commonly used polyester drying treatment.
- a hopper-type through-air dryer that supplies a polyester chip from the upper portion and allows the drying gas to flow from the lower portion is usually used.
- a rotary disk-type continuous dryer is used. While passing a small amount of drying gas, heated steam, heating medium, etc. are applied to the rotating disk ⁇ outer jacket. And the polyester chips can be indirectly heated and dried.
- a double cone type rotary dryer is used as a dryer for drying by the notch method, and can be dried in a vacuum or while passing a small amount of drying gas under vacuum. In some cases, drying may be performed under atmospheric pressure while passing a drying gas.
- drying gas atmospheric air may be used.
- dry nitrogen and dehumidified air are preferred for preventing the reduction of molecular weight due to hydrolysis or thermal oxidative decomposition of polyester.
- the amount of oligomer increase after the polyester resin is heated and melted at a temperature of 290 ° C. can be suppressed.
- the transesterification reaction can be suppressed at the time of melting during molding or the like, and the effect of preventing the dispersion ratio MwZMn of the molded body from becoming 3.0 or less at the time of melting is expected.
- aldehydes such as acetoaldehyde tends to be accelerated by the polymerization catalyst, and the catalyst is preferably deactivated in order to enhance the effect of the present invention.
- the polymerization catalyst can be deactivated by adding a phosphorus conjugate.
- Phosphoric acid compounds, phosphonic acid compounds, phosphinic acid compounds, phosphorous acid compounds, phosphonous acid compounds, and phosphinous acid compounds are listed as examples of the phosphoric acid compound.
- phosphoric acid dimethyl phosphate, getyl phosphate, dipropinole phosphate, dibutinole phosphate, diamino rephosphate, dihexinole phosphate, trimethinole phosphate, trietinole phosphate, trippropinole phosphate, tributyl phosphate And triamyl phosphate, trihexyl phosphate, esters of phosphoric acid and alkylene glycol, and the like.
- phosphonic acid compounds include, for example, methylphosphonic acid, dimethyl methylphosphonate, diphenyl methylphosphonate, phenylphosphonic acid, dimethyl phenylphosphonate, diphenyl phenylphosphonate, dimethyl benzylphosphonate, and dimethylphosphonate.
- phosphinic acid compounds include, for example, diphenylphosphinic acid, methyldiphenylphosphinate, diphenylphosphinic acid, phenylphosphinic acid, methylphenylphosphinate, and methylphenylphosphine.
- Phosphinic acid foam 2-carboxyethyl-methyl phosphinic acid, 2-carboxyethyl-ethylphosphinic acid, 2-carboxyethyl-propylphosphinic acid, 2-carboxyethyl-phenylphosphinic acid, 2-carboxyethyl m tolylphosphinic acid, 2-carboxyethyl p-tolylphosphinic acid, 2-carboxyethyl-xylylphosphinic acid, 2-carboxyethyl-benzylphosphinic acid, 2-carboxyethyl-methylbenzylphosphinic acid, 2 —Carboxymethyl-methylphosphinic acid, 2-carboxymethylethyl Phosphinic acid, 2-carboxyshethyl-propylphosphinic acid, 2-carboxymethyl-phenylphosphinic acid, 2-carboxymethyl-m-tolylphosphinic acid,
- the phosphite compound include, for example, phosphorous acid and dimethyl phosphite, getyl phosphite, dipropyl phosphite, dibutyl phosphite, diamyl phosphite, dihexyl phosphite, trimethyl phosphite, triethyl Phosphite, triphenylphosphite, tris (2,4 ditertbutylphenyl) phosphite, tetrakis (2,4ditertbutylbutyl) 4,4, -biphenyldiphosphite, phosphorous acid and alkylene glycol And the like.
- phosphonous acid-based compound examples include, for example, methylphosphonous acid, dimethyl methylphosphonite, diphenylmethylphosphonite, phenolphosphonite, phenyldimethylphosphonite, phenylphosphonite. And phosphonate diphenyl.
- Examples of the method for adding the Ryidani conjugate include a method of adding at the time of polycondensation, a method of immersing the chips in a Ryndani conjugate solution, particularly a phosphoric acid aqueous solution, and a method of adding the chips as a master batch. Further, these phosphorus conjugates may be in a state copolymerized with polyester.
- the catalyst for example, Ti, A1 is added to the polyester of the catalyst (eg, Ge, Sb) in which the catalytic activity is not significantly reduced by the phosphorus conjugate, and the catalyst activity is reduced by the phosphorus conjugate. ) Is also preferred.
- the measurement method for determining the deactivation effect is a method for measuring the effect of the molded article after molding. It is preferable to use a judgment method.
- the force at which the transesterification reaction of the polyester occurs at the time of molding can suppress this transesterification reaction, and the conditions at the time of molding can be broadened.
- the difference in crystallization temperature of the polyester constituting the polyester resin of the present invention when the temperature is raised is within 10 ° C, preferably within 8 ° C, more preferably within 7 ° C, and particularly preferably. It is within 5 ° C.
- the difference in the crystallization temperature at the time of the temperature rise exceeds 10 ° C.
- the crystallization speed fluctuation of the obtained molded body becomes large.
- the degree of crystallinity of the hollow plug body formed by heating and crystallizing greatly fluctuates, the dimensional fluctuation of the hollow plug part becomes large, resulting in poor castability and leakage of contents.
- the difference between the crystallization temperatures at the time of the temperature rise is the value of the polyester having the highest crystallization temperature at the time of the temperature rise and the lowest value. Expresses the difference in the value of polyester with a warm crystallization temperature.
- the polyester resin of the present invention contains at least two types of polyesters as the main components as described above, the type and amount of the above-mentioned polycondensation catalyst, melt polycondensation and solid-state polymerization conditions are appropriately controlled. Can be manufactured. Further, it can be obtained by a method of giving an impact to the polyester chip thus obtained, or a method of blending a polyolefin resin, particularly a polyethylene, polyamide resin, polyoxymethylene resin or the like as described below. .
- the shape of the polyester chip of the present invention may be any of a cylinder shape, a square shape, a spherical shape, a flat plate shape and the like.
- the average particle size is usually in the range of 1.0 to 4 mm, preferably 1.0 to 3.5 mm, more preferably 1.0 to 3.0 mm.
- the length is about 1.0 to 4 mm and the diameter is about 1.0 to 4 mm.
- Field of spherical particles In this case, it is practical that the maximum particle size is 1.1 to 2.0 times the average particle size and the minimum particle size is 0.7 times or more the average particle size.
- the average weight (W) of the chips is in the range of 5 to 50 mgZ. If it is necessary to increase the solid-state polymerization rate or to reduce the aldehyde content more effectively, the average weight (W) of the chips is preferably set to 1 to 5 mgZ. Better ,.
- the ratio of the average weight (W) of the polyester constituting the polyester resin of the present invention is 0.80 to: L20, preferably 0.85 to: L15, and more preferably 0.90 to: L10. , More preferably 0.95 to: L.05, and most preferably 0.97 to: L03.
- the specific force of the average weight (W) is less than 0.80, generation of aldehydes at the time of molding is increased, and equipment cost such as use of a special nozzle for manufacturing chips is not preferable.
- it exceeds 1.20 it is difficult to melt at the time of molding, and it becomes difficult to perform low-temperature molding.
- the polyester resin of the present invention is composed of two or more types of polyester resins, the difference between the average weights (W) is the largest, the value of the average weight polyester is the smallest, and the average weight (W) is the smallest. Indicates the difference between the polyester values.
- the difference in crystallinity of the polyester chips constituting the polyester resin of the present invention is 15% or less, preferably 10% or less, and more preferably 8% or less. If the difference in crystallinity exceeds 15%, the difference in meltability between the polyesters will be large and the effect of improving the fluidity will be impaired, and as a result, the transparency of the polyester unstretched molded article or stretched hollow molded article will be reduced. The effect of the improvement and the reduction of the content of acetoaldehyde is lost, and the unevenness of the amount of the above-mentioned polyester is apt to occur. It is not preferable because it causes.
- the difference in crystallinity refers to the difference in crystallinity between the largest polyester and the smallest polyester in terms of crystallinity. It is.
- the crystallinity of the chip is calculated from the chip density obtained by the following method. Calculate by calculation.
- the polyester resin of the present invention comprises, for example, the above-mentioned polyester A and polyester B
- they can be obtained by uniformly mixing these at a predetermined ratio.
- a method of dry-blending the above-mentioned polyester A and the above-mentioned polyester B with a tumbler, a V-type blender, a Henschel mixer, a static mixer, etc., and a single-screw extruder, twin-screw extruder For example, a method of melt-mixing at least once at least is exemplified.
- the polyester A and the polyester B are uniformly mixed in a predetermined ratio in a chip form by the above-mentioned appropriate method, dried, and then subjected to molding.
- polyester resin of the present invention may be blended with polyamide, polyesteramide, a low molecular weight amino group-containing compound and a hydroxyl group-containing compound as an aldehyde compound capturing material.
- polyamide to be blended as the capturing material of the aldehyde conjugate examples include at least one polyamide selected from aliphatic polyamides and partially aromatic polyamides.
- the aliphatic polyamide examples include nylon 6, nylon 11, nylon 12, nylon 66, nylon 69, nylon 610, nylon 6Z66, and nylon 6Z610.
- Preferable examples of the partially aromatic polyamide include metaxylylenediamine, or a structural unit derived from an aliphatic dicarboxylic acid and metaxylylenediamine and a mixed xylylenediamine containing not more than 30% of the total amount of paraxylylenediamine. It is a m-xylylene group-containing polyamide containing at least 20 mol% or more, more preferably 30 mol% or more, particularly preferably 40 mol% or more in a molecular chain.
- the partially aromatic polyamide contains structural units derived from a polycarboxylic acid having three or more bases such as trimellitic acid and pyromellitic acid within a substantially linear range! / You can.
- polystyrene resin examples include homopolymers such as polymetaxylylene adipamide, polymetaxylylene sebacamide, polymetaxylylene speramide, and the like, and metaxylylenediamine Z adipic acid Z isophthalic acid copolymer; Meta-xylylene Z-para-xylylene adipamide copolymer, meta-xylylene Z-para-xylylene piperamide copolymer, meta-xylylene Z-para-xylylene Nazeramid copolymer, meta-xylylenediamine Z adipic acid Z isophthalic acid Z ⁇ -one-port ratatam copolymer, meta-xylylenediamine ⁇ adipic acid ⁇ isophthalic acid ⁇ -amino cabronic acid copolymer Can be
- the partially aromatic polyamide include a constituent unit derived from an aliphatic diamine and at least one acid selected from the group consisting of terephthalic acid and isophthalic acid. And more preferably at least 30 mol%, particularly preferably at least 40 mol%.
- polystyrene resin examples include polyhexamethylene terephthalamide, polyhexamethylene isophthalamide, hexamethylene diamine ⁇ terephthalic acid ⁇ isophthalic acid copolymer, polynonamethylene terephthalamide, polynonamethylene methylene isophthalamide, Namethylenediamine
- Preferable examples of the partially aromatic polyamide include other examples of aliphatic diamine and terephthalic acid or isophthalic acid.
- Aliphatic diamine and terephthalic acid or isophthalic acid obtained by using aminocarboxylic acids such as aminocaproic acid and aromatic aminocarboxylic acids such as paraaminomethylbenzoic acid as copolymerization components.
- polyamides examples include hexamethylene diamine ⁇ terephthalic acid ⁇ one-strength prolactam copolymer, hexamethylene diamine ⁇ isophthalic acid ⁇ one-strength prolatatam copolymer, hexamethylene diamine ⁇ terephthalic acid ⁇ adipic acid ⁇ one-strength prolatatam copolymer.
- Polyesteramides include terephthalic acid, 1,4-cyclohexanedimethanol and polyethyleneimine. Polyesteramide, isophthalic acid, 1,4-cyclohexanedimethanol and hexamethylenediamine Polyester amide, terephthalic acid, adipic acid, 1,4-cyclohexane dimethanol and hexamethylene diamine produced Polyester amide, terephthalic acid, 1,4-cyclohexane dimethyl Tanol and bis (p-aminocyclohexyl) methane powers also include polyesteramides produced and mixtures thereof.
- the polyamide or polyesteramide used preferably has a secondary transition point measured by DSC (differential scanning calorimeter) of 50 to 120 ° C. If the secondary transition point is lower than 50 ° C., it is not preferred because it may be fused during the drying step or extrusion with a polyester resin or may not be extruded quantitatively. On the other hand, when the temperature exceeds 120 ° C., it is not preferable because the unstretched polyester article is not uniformly stretched when stretched, resulting in uneven thickness and the like.
- DSC differential scanning calorimeter
- the shape of the chip of polyamide or polyesteramide to be mixed with the polyester resin of the present invention may be any of a cylinder type, a square type, a spherical shape or a flat plate shape.
- the average particle size is usually in the range of 1.0 to 5 mm, preferably 1.2 to 4.5 mm, more preferably 1.5 to 4.0 Omm.
- the length is about 1.0 to 4 mm and the diameter is about 1.0 to 4 mm.
- the maximum particle diameter is 1.1 to 2.0 times the average particle diameter and the minimum particle diameter is 0.7 times or more the average particle diameter.
- the weight of the chip is practically in the range of 1 to 50 mgZ.
- low molecular weight amino group-containing compounds include aliphatic amine conjugates such as stearylamine, 1,8-diaminonaphthalate, 3,4-diaminobenzoic acid, 2-aminobenzamide, 4,4 ′ — Aromatic amine compounds such as diaminodiphenylmethane; triazine-conjugated compounds such as melamine and benzoguanamine; and amino acids.
- hydroxyl group-containing compound examples include polyvinyl alcohol, ethylene vinyl alcohol polymer, sugar alcohol, and trimethylolpropane.
- polyamide compounds low molecular weight amino group-containing compounds, or hydroxyl group-containing compounds may be used alone or in a mixture at an appropriate ratio.
- the aldehyde compound-trapping material is, for example, 0.001 to 5 parts by weight, preferably 0.01 to 3 parts by weight, more preferably 0.1 to 2 parts by weight based on 100 parts by weight of the polyester resin of the present invention. Can be used.
- the aldehyde compound capturing material may be blended by adding a predetermined amount of an aldehyde compound capturing material in any reaction step of the production of a polyester polymer having a low polymerization degree oligomer. it can.
- the above aldehyde compound The capture material is added in a suitable form, such as fine granules, powder, or melt, to a reactor such as an Esterich reactor or a polycondensation reactor, or the polyester is transferred to the reactor in the next step from the reactor power.
- the aldehyde compound-capturing material or a mixture of the aldehyde compound-capturing material and the polyester can be introduced in a molten state into the transport pipe for the reactant, and can be blended.
- the obtained chip can be subjected to solid-state polymerization under a high vacuum or an inert gas atmosphere.
- a polyester resin and an aldehyde-digested compound can be captured by a conventionally known method. It can also be obtained by a method of mixing materials, or a method of mixing a mixture of two or more polyesters with an aldehyde conjugate capture material.
- a polyamide chip and two types of polyester chips having different IVs are dry blended with a tumbler, V-type blender, Henschel mixer, etc., and a dry-blended mixture is mixed with a single-screw extruder, twin-screw extruder, kneader, etc. Examples include those obtained by melt-mixing one or more times, and those obtained by solid-state polymerization of a chip having a molten mixture power under a high vacuum or an inert gas atmosphere as necessary.
- the polyester resin of the present invention is blended with 0.1 to 10000 ppm of at least one resin selected from the group consisting of polyolefin resin and polyacetal resin.
- the mixing ratio of the resin to the polyester resin used in the present invention is from 0.3 lppb to 10000 ppm, preferably from 0.3 ppb to 1000 ppm, more preferably from 0.5 ppb to: LOOppm, more preferably 1.
- polystyrene resin blended in the polyester resin of the present invention examples include a polyethylene resin, a polypropylene resin, and an ⁇ -olefin resin. Also, these resins can be crystalline or amorphous!
- polyethylene resin blended in the polyester resin of the present invention examples include, for example, an ethylene homopolymer, ethylene, propylene, butene-1,3-methylinobutene-11, pentene-1,4-methylpentene1, Other ⁇ -olefins having about 2 to 20 carbon atoms, such as hexene 1, otaten 1, decene-1, etc., butyl acetate, butyl chloride, acrylic acid, methacrylic acid, acrylic acid ester, methacrylic acid ester, styrene, A copolymer with a vinyl conjugate such as a saturated epoxy compound may be used.
- ultra-low 'low' medium-high density polyethylene branched or linear
- ethylene homopolymer ethylene propylene copolymer, ethylene butene 1 copolymer, ethylene-4-methylpentene 1 copolymer
- Ethylene ethylene-hexene 1 copolymer
- ethylene otaten 1 copolymer ethylene acetate butyl copolymer
- ethylene acrylic acid copolymer ethylene methacrylic acid copolymer
- ethylene ethyl acrylate copolymer etc.
- Systemic resin Systemic resin.
- polypropylene resin blended in the polyester resin of the present invention examples include, for example, propylene homopolymer, propylene, ethylene, butene-1,1,3-methylbutene1, pentene1,4-methylpentene1, and hexene1.
- ⁇ -olefins having about 2 to 20 carbon atoms such as octane 1, octene 1 and decene 1
- vinyl compounds such as vinyl acetate, vinyl chloride, acrylic acid, methacrylic acid, acrylate, methacrylate, and styrene.
- Copolymers and copolymers with gens such as hexadiene, octadiene, decadiene, dicyclopentadiene and the like can be mentioned.
- propylene homopolymer atactic, isotactic, syndiotactic polypropylene
- propylene Propylene resins such as ethylene copolymer and propylene ethylene butene 1 copolymer are exemplified.
- a-olefin resin blended in the polyester resin of the present invention a homopolymer of about 2 to 8 carbon atoms such as 1-methylpentene 1 (X-olefin homopolymer, those a-olefins, ethylene, Copolymers with other aolefins having about 2 to 20 carbon atoms, such as propylene, butene-11,3-methylbutene-11, pentene1, hexene1, otaten1, decene1, etc., etc.
- X-olefin homopolymer 1-methylpentene 1
- ethylene those a-olefins, ethylene
- Copolymers with other aolefins having about 2 to 20 carbon atoms such as propylene, butene-11,3-methylbutene-11, pentene1, hexene1, otaten1, decene1, etc.
- Examples of the polyacetal resin blended in the polyester resin of the present invention include a polyacetal homopolymer and a copolymer.
- a polyacetal homopolymer the density measured by the method of ASTM-D792 is 1.40-1.42 g / cm 3 , and the melt flow measured at 190 ° C and the load of 2160 g by the measurement method of A STMD-1238 Polyacetals having a ratio (MFR) in the range of 0.5 to 50 g of ZlO are preferred.
- a density force S1.38 to: L 43 g / cm 3 measured by a measuring method of ASTM-D792, and a value of 190 according to a standard method of ASTMD-1238 willow.
- C a polyacetal copolymer having a melt flow ratio (MFR) measured at a load of 216 Og in the range of 0.4 to 50 gZlO is preferable. Examples of these copolymer components include ethylene oxide and cyclic ether.
- the resin such as the polyolefin resin is added to the polyester resin or the polyester constituting the polyester resin so that the content is within the above range.
- a conventional method such as a method of directly adding and melt-kneading, or a method of adding and melt-kneading as a master batch, and the above-mentioned resin can be added to the polyester at the production stage of the polyester, for example, at the time of melt polycondensation.
- the polyester chip is brought into contact with the member in a space where the resin member is present.
- the polyester chip is brought into contact with the member in a space where the resin member is present.
- the polyester chip is brought into contact with the member in a space where the resin member is present.
- the polyester chip is brought into contact with the member in a space where the resin member is present.
- Part of the pneumatic transport pipe, gravity transport pipe, silo, magnet part of the magnet catcher, etc. are made of the above resin when filling the container and discharging, or when inserting the molding machine at the forming stage of the polyester chip.
- the contact time of the polyester chip with the above-mentioned member is usually extremely short such as about 0.01 second to several minutes.
- the aforementioned polyester resin can be mixed with a trace amount of the above resin.
- the unstretched polyester molded article of the present invention can be formed into a film, sheet, or hollow molded article by a melt molding method using a generally used extrusion molding machine, injection molding machine, or the like. It can be obtained in the form of a preform or the like obtained by compression-molding a molten mass obtained by melt-extrusion molding. Further, the polyester unstretched molded article of the present invention can be made into a polyester stretched molded article by using any stretching method among -axial stretching, sequential biaxial stretching, and simultaneous biaxial stretching. Further, it is apt to be formed into a cup shape or a tray shape by pressure forming or vacuum forming.
- the mechanical strength can be improved by stretching the sheet-like material made of the polyester resin of the present invention at least in a uniaxial direction.
- the stretched film made of the polyester resin of the present invention is obtained by subjecting a sheet-like material obtained by injection molding or extrusion molding to any one of uniaxial stretching, sequential biaxial stretching, and simultaneous biaxial stretching, which are usually used for stretching PET. It is formed using a stretching method. Also, it is better to form into a cup shape or a tray shape by pressure forming or vacuum forming.
- the unstretched molded article of the present invention is to be obtained from the polyester resin of the present invention.
- a transesterification reaction occurs during melt kneading. Therefore, it is necessary to adjust the melt-kneading conditions such as temperature, residence time, shear rate, screw configuration and the like so that the dispersion ratio MzZMn of the molecular weight distribution of the polyester unstretched molded product does not fall below 3.30.
- the temperature, residence time, and shear rate must not be increased more than necessary within a range that allows uniform kneading, and the screw configuration should include more mixing screws and reverse screws than necessary to ensure plug flowability. And that the melt residence time is as short as possible.
- the polyester resin is generally stored in an air atmosphere until the polymer is polymerized and the force is formed, and the polyester resin absorbs moisture during this period.
- the percentage of moisture absorbed is about 300 to 4000 ppm, depending on the storage period.
- the polyester resin of the present invention contains at least two or more polyesters as main components, the difference in the water content of each polyester before melt molding is 100 ppm or less, preferably 80 ppm or less, more preferably 50 ppm or less, and particularly preferably 30 ppm or less, most preferably 10 ppm or less.
- the moisture content of a polyester with a higher intrinsic viscosity (hereinafter sometimes referred to as a high IV-polyester) is also referred to as a moisture content of a polyester with a lower intrinsic viscosity (hereinafter sometimes referred to as a low IV-polyester). If the difference exceeds 100 ppm, the high IV-polyester in the molding machine is hydrolyzed to lower the intrinsic viscosity by hydrolysis.As a result, the IV difference between both polyesters becomes smaller than before molding. As a result, transparency cannot be improved, and the content of aldehydes such as acetoaldehyde increases.
- the difference in water content of the high IV-polyester is subtracted from the water content of the low IV-polyester by more than 100 ppm, the low viscosity of the low IV-polyester is further reduced in the molding machine by hydrolysis. As a result, the IV difference between both polyesters is larger. Particularly, in the case of a polyester resin whose intrinsic viscosity difference before molding is around 0.30 deciliters Z gram, the intrinsic viscosity difference is further increased, so that the obtained molded product has uneven thickness and whitened flow pattern. And the like, resulting in poor transparency and a problem.
- the difference in the water content refers to a difference between the water content of the largest polyester and the water content of the smallest polyester.
- Conditions for molding the polyester unstretched molded article of the present invention include:
- the molten resin temperature is raised by 10 to 35 ° C, preferably 12 to 33 ° C, more preferably 15 to 30 ° C higher than the melting point of the resin by heating the rel ⁇ hot runner. It is important to set the temperature within the range.
- the molten resin temperature refers to a temperature at which the resin injected from the nozzle tip of an injection molding machine or the like is immediately measured by, for example, a thermocouple thermometer or the like.
- the melting point is a value determined by a DSC measurement method.
- the molding of the polyester molded article of the present invention will be described more specifically by taking PET as a representative example. Since the polyester resin absorbs moisture, the moisture content is reduced to about 100 ppm or less, preferably 50 ppm or less by heat drying under reduced pressure or heat drying under an inert gas. A molded article to be used as a film, sheet, container, or other packaging material can be formed by using the composition.
- the temperature of the molten resin is 260 to 295 ° C, preferably 262 to 290 ° C, by heating a barrel or a hot runner of an injection molding machine or the like. or 265 ⁇ 285 0 C, Saichi preferably ⁇ or important to 265 ⁇ 280 o C set in the range [Konaru by sea urchin.
- the melt residence time in the molding machine can be set by selecting the shape of the extruder screw, selecting LZD, etc., and setting the extrusion amount arbitrarily in the case of extrusion molding, and by the injection molding machine in the case of injection molding.
- the cycle time, the weighing stroke (screw back amount) and the like are set arbitrarily to set the range of 10 to 500 seconds, preferably 20 to 200 seconds, and more preferably 30 to 150 seconds.
- the melt residence time is the residence time in a state where the resin is melted in the molding machine, and specifically, the time during which the resin is melted and held in a cylinder in the molding machine, a hot runner, a die, or the like. That is.
- W Weight of molten resin in cylinder and hot runner of injection molding machine etc.
- P Molded product weight per shot (g)
- the molten resin temperature in the range of 260 to 295 ° C and setting the melt residence time in the range of 10 to 500 seconds
- at least two kinds mainly ethylene terephthalate, are mainly used.
- Polyester resin containing a polyester as a repeating unit as a main component has a low aldehyde content, such as acetoaldehyde, and is excellent in flavor retention, excellent in transparency, and uneven in transparency (for example, when formed on a molded product).
- the temperature of the molten resin is less than 260 ° C, it is difficult to perform molding with a large torque load of an injection molding machine or the like, and the obtained unstretched molded article has extremely poor transparency.
- the variation in thickness increases.
- thermal decomposition becomes severe and the content of aldehydes such as acetoaldehyde increases, which is a problem.
- the melt residence time is less than 10 seconds, the transparency of the unstretched molded article deteriorates due to insufficient melting, and if it exceeds 500 seconds, the transparency of the unstretched molded article becomes very good.
- the content of aldehydes such as cetaldehyde is increased, the molding cycle is lengthened, and the productivity of the unstretched molded body is reduced.
- the stretching temperature is usually from 80 to 130 ° C.
- the stretching may be uniaxial or biaxial, but is preferably biaxial stretching from the viewpoint of practical physical properties of the film.
- the stretching ratio is usually 1.1 to 10 times, preferably 1.5 to 8 times in the case of uniaxial stretching.
- biaxial stretching it is usually 1.1 to 8 times in both the longitudinal and transverse directions. Preferably, it is performed in a range of 1.5 to 5 times.
- the vertical magnification Z and the horizontal magnification are usually 0.5 to 2, preferably 0.7 to 1.3.
- the obtained stretched film can be further heat-set to improve heat resistance and mechanical strength.
- the heat setting is usually performed under tension at 120 ° C. to 240 ° C., preferably 150 ° C. to 230 ° C., usually for several seconds to several hours, preferably for several tens seconds to several minutes.
- the thickness of the stretched film is about 5-100 microns.
- the unstretched polyester molded article of the present invention is obtained by stretch blow molding, and an apparatus conventionally used in blow molding of PET is used. Can be used. Specifically, for example, injection molding or extrusion molding is performed, and an unstretched molded body is molded, and the plug and bottom are processed as it is or reheated, and the hot parison method or the cold parison method is used. Is applied.
- the unstretched polyester article is stretched after unstretched heating or temperature control to about 90 to 110 ° C, preferably about 95 to 105 ° C.
- the stretching temperature is usually 70 to 120 ° C, preferably 90 to 110 ° C.
- the stretch ratio is preferably 5 to 15 times, and more preferably 7 to 12 times, in area stretch ratio.
- it is heat-set at a mold temperature of 100 to 180 ° C, preferably 110 to 150 ° C, for 1 second or more, preferably 3 seconds or more.
- the stretching ratio is preferably 5 to 10 times, and more preferably 6 to 8 times in terms of area stretching ratio.
- the obtained polyester stretched hollow molded article crystallizes the plug.
- the plug of the polyester unstretched molded product obtained by injection molding or extrusion molding is crystallized in an oven equipped with a far-infrared or near-infrared heater, or bottles are formed. Later, the plug is crystallized with the above-mentioned heater.
- the mold is kept at a mold temperature of 110 to 230 ° C, preferably 120 to 210 ° C for 1 to 30 seconds, preferably 1 to 20 seconds. And heat-fixed.
- the molded body is cooled by blowing a cooling gas such as nitrogen or air.
- the present invention is to obtain a stretched hollow molded article by a so-called compression molding method, in which a preform obtained by compression-molding a molten lump obtained by melt-extruding the polyester resin of the present invention after extrusion is stretch-blown molded.
- the polyester resin of the present invention may contain, if necessary, known UV absorbers, antioxidants, infrared absorbers, oxygen scavengers, lubricants added from the outside, lubricants deposited internally during the reaction, and mold release agents. , Nucleating agents, stabilizers, antistatic agents, bluing agents, dyes, pigments and other additives; metaxylylenediamine and adipic acid to improve oxygen permeability. Dough and the like may be blended.
- the stretched polyester product obtained from the unstretched polyester product of the present invention is a stretched film
- calcium carbonate, carbonate, and the like are used in order to improve handling properties such as slipperiness, winding property, and blocking resistance.
- Inorganic particles such as magnesium, barium carbonate, calcium sulfate, barium sulfate, lithium phosphate, calcium phosphate, and magnesium phosphate
- organic salt particles such as terephthalate such as calcium and calcium oxalates, norium, zinc, manganese, and magnesium.
- Inert particles such as cross-linked polymer particles such as homo- or copolymers of a butyl monomer such as benzene, styrene, acrylic acid, methacrylic acid, atarilic acid or methacrylic acid can be contained.
- the dispersion ratio MwZMn of the molecular weight distribution of the unstretched polyester molded article or stretched polyester article of the present invention obtained as described above using the polyester resin of the present invention is 3.00 or more, preferably 3.0 or more, more preferably 3.10 or more.
- the dispersion ratio MwZMn of the molecular weight distribution is less than 3.00, the transparency of the molded product is poor, and aldehydes such as acetaldehyde of the molded product cannot be reduced, which is not preferable.
- the strength of a stretched polyester molded article having a lower mechanical strength cannot be obtained.
- the dispersion ratio MzZMn of the molecular weight distribution of the polyester unstretched molded article or polyester stretched molded article of the present invention is 3.30 or more, preferably 3.33 or more, more preferably 3.35 or more, and particularly preferably 3 or more. 37 or more. If the dispersion ratio MzZMn of the molecular weight distribution is less than 3.30, the transparency of the molded article is poor as described above, and aldehydes such as acetoaldehyde of the molded article cannot be reduced, which is not preferable. Further, only a stretched polyester molded article having a lower mechanical strength can be obtained.
- the content of aldehydes in the polyester unstretched molded article or the polyester stretched molded article of the present invention is desirably 50 ppm or less, preferably 30 ppm or less, more preferably 20 ppm or less.
- the stretched polyester article of the present invention is made of a polyester resin having ethylene terephthalate as a main repeating unit, and is used as a material for a container for beverages having a low flavor such as power water
- the polyester aldehyde molded article has an acetate aldehyde content of 15 ppm or less, preferably 12 ppm or less, more preferably 10 ppm or less. Below, it is most desirable that it is 7 ppm or less.
- the formaldehyde content of the stretched hollow polyester article of the present invention is 5 ppm or less, preferably 3 ppm or less, more preferably 2 ppm or less, and most preferably 1 ppm or less.
- the free ethylene glycol content of the stretched polyester hollow molded article of the present invention is 5 Oppm or less, preferably 40 ppm or less, more preferably 30 ppm or less, most preferably 20 ppm or less, and the free diethylene glycol content is 20 ppm or less. It is preferably at most 15 ppm, more preferably at most 13 ppm, most preferably at most 10 ppm.
- the polyester unstretched molded body of the present invention is composed of a polyester resin having ethylene terephthalate as a main repeating unit
- its crystallization temperature (Tel) at the time of temperature rise is 140 to 175 ° C.
- the crystallization temperature (Tc2) at the time of cooling is preferably 160 to 190 ° C. If the Tel force is less than 140 ° C, whitening occurs during preheating before molding, resulting in poor stretchability and poor transparency. If the tel exceeds 175 ° C, the crystallization treatment of the plug part of the hollow molded article for heat resistance becomes insufficient, and the plug part deforms when hot-filled beverages are hot-filled, resulting in leakage after capping. It causes the occurrence.
- the amount of the cyclic trimer when melted at a temperature of 290 ° C for 60 minutes is 0.40% by weight or less.
- the polyester used for this purpose can be produced by deactivating the polyester polycondensation catalyst obtained after the melt polycondensation or after the solid phase polymerization as described above.
- the amount of increase of the cyclic trimer when melted at a temperature of 290 ° C. for 60 minutes is preferably at most 0.3% by weight, more preferably at most 0.1% by weight.
- composition and each property of the polyester are measured after the chips are freeze-pulverized and sufficiently mixed.
- the IV of the polyester resin was the weighted average calculated from the IV of the constituent polyester.
- Diethylene glycol content of polyester (hereinafter referred to as [DEG content]) Decomposed by methanol, the amount of DEG is determined by gas chromatography, and the ratio (mol%) to the total glycol component is calculated. expressed.
- the polyester resin is frozen and pulverized, and then 3 g of the dried polyester sample is placed in a glass test tube and immersed in a 290 ° C oil bath for 60 minutes under a nitrogen atmosphere to melt.
- the amount of cyclic trimer increase upon melting is determined by the following formula.
- the cyclic trimer content before melting was a weighted average of the cyclic trimer content of the polyester constituting the polyester resin.
- Cyclic trimer content after melting (% by weight) —Cyclic trimer content before melting (% by weight)
- a strip with a mouth force of about l to 3 mm is also cut out of the compact formed by the above procedure.
- Acetaldehyde content (hereinafter referred to as “AA content” t) of polyester and AA increase before and after molding (hereinafter “ ⁇ amount” t ⁇ ⁇ )
- Sample Z distilled water 1 gram Z2cc placed in a glass ampoule purged with nitrogen is sealed, extracted for 2 hours at 160 ° C, cooled, and cooled to high-sensitivity gas chromatography of acetoaldehyde in the extract. And the concentration was expressed in ppm.
- samples were taken from the mouth.
- the ⁇ amount is the AA amount of the molded product sample minus the AA amount of the chip before molding.
- the average value of the AA amount of each polyester is calculated as the AA amount of the chip before molding.
- the tip density (p) at 30 ° C was measured with a density gradient tube of calcium nitrate aqueous solution.
- the ratio of the average weight (W) to the average weight of the polyester chips was determined by removing the fines with ion-exchanged water, measuring the weight of up to 100 dried polyester chips, and determining the average value as the average weight (W).
- the selection of 100 chips was made by excluding chips of an abnormal size. That is, after randomly selecting 100 chips and calculating the average weight (W), chips with a weight below 0.5 W and chips with a weight above 2 W are excluded, and the excluded chips are randomly selected again and replenished. Then, the average value of 100 pieces was recalculated. This was performed until all 100 chips were within 0.5W to 2W.
- the ratio of the average weight of polyester A to polyester B was calculated from the average weight of each of the polyester chips thus obtained by the following formula.
- Average weight ratio average weight of polyesternole A average weight of polyesternole B (8) Sodium content and calcium content of polyester
- Sample 5 or more LOg is put in a platinum crucible and incinerated at about 550 ° C, then dissolved in 6N hydrochloric acid, evaporated to dryness, and the residue is dissolved in 1N hydrochloric acid. This solution was measured by atomic absorption spectrometry.
- the fines sieved under the sieve (B) are washed with a 0.1% aqueous solution of a cationic surfactant, then washed with ion-exchanged water and filtered through a G1 glass filter manufactured by Iwaki Glass Co., Ltd. Collected. These were dried together with the glass filter in a dryer at 100 ° C for 2 hours, cooled, and weighed. The same operation of washing and drying with ion-exchanged water was repeated again to confirm that the weight became constant, and the weight of the glass filter was subtracted from this weight to obtain a fine weight.
- the fine content is the total weight of the resin that has been passed through a fine weight Z sieve.
- the crystallization temperature (Tel) at the time of temperature rise and the crystallization temperature at the time of temperature fall (Tc2) of the molded body were measured with a differential thermal analyzer (DSC) manufactured by Seiko Denshi Kogyo Co., Ltd., RDC-220. following( Use 10mg of the sample from the center of the 2mm thick plate of 15). Heating rate: Raise the temperature at 20 ° CZ for 3 minutes, hold at 290 ° C for 3 minutes, cool down from 290 ° C to 240 ° C in 10 ° CZ, and further reduce the temperature from 240 ° C to 130 ° C. The temperature dropped at 7 ° C / min.
- the peak temperature of the crystallization peak observed at the time of temperature rise is defined as the crystallization temperature at the time of temperature rise (Tel)
- the peak temperature of the crystallization peak observed at the time of temperature decrease is defined as the crystallization temperature at the time of temperature decrease (Tc2).
- a sample was cut out from the molded product (thickness 5 mm) shown in (15) below, and measured with a model NDH2000, a haze meter manufactured by Nippon Denshoku Co.
- the haze of a molded plate (thickness: 5 mm) molded continuously 50 times was measured, and the haze unevenness was determined as follows.
- Haze spot Maximum value of haze Minimum value of Z haze
- the haze of the stretched hollow molded body was measured by using a haze meter (model NDH2000, manufactured by Nippon Denshoku Co., Ltd.) by cutting a sample from the bottle body described in (16) below.
- the number average molecular weight Mn, weight average molecular weight Mw, and Z average molecular weight Mz were determined by the GPC method. However, the number average molecular weight Mn and the weight average molecular weight Mw when calculating the dispersion ratio MwZMn of the molecular weight distribution are determined in the integration range 1, and the number average molecular weight Mn and Z average molecular weight Mz when calculating the dispersion ratio MzZMn of the molecular weight distribution. was calculated in integration range 2.
- the peak end was 250 with standard polystyrene.
- the peak end was 700 with standard polystyrene.
- the dispersion ratio MwZMn and the dispersion ratio MzZMn of the molecular weight distribution were determined from the following.
- Drying inert gas nitrogen gas was purged inside the molding material hopper to prevent moisture absorption during molding using polyester dried under reduced pressure using a vacuum dryer DP61 type manufactured by Yamato Scientific.
- the injection conditions were such that the injection speed and the holding pressure were 20%, and the injection pressure and the holding pressure were adjusted so that the weight of the molded product was 146 g / 0.2 g. At that time, the holding pressure was 0.5 MPa lower than the injection pressure. It was adjusted.
- the upper limits of injection time and dwell time are set to 10 and 7 seconds, respectively, and the cooling time is set to 50 seconds.
- the overall cycle time including the removal time of molded products is about 75 seconds.
- Cooling water with a water temperature of 10 ° C is constantly introduced into the mold to control the temperature, but the mold surface temperature during stable molding is around 22 ° C.
- the molding temperature refers to a set temperature of the barrel including the nozzle.
- the stepped plate used for the measurement of the molded plate Tcl and the molded plate Tc2 of various polyesters used in Examples and Comparative Examples is a molded plate molded at a molding temperature of 290 ° C.
- the haze (%) and the haze unevenness (%) of the molded product of the polyester resin in Examples and Comparative Examples were measured in Examples 1 to 3 and Comparative Example 1 at a molding temperature of 290 ° C.
- a molded plate at a molding temperature of 280 ° C. was used.
- the test plate for evaluating the characteristics of the molded product was selected arbitrarily from among the stable molded products at the 11th to 18th shots from the start of molding after the molding material was introduced and the resin was replaced.
- the 2 mm-thick plate (A in Fig. 1) measures the crystallization temperature (Tel) when the temperature rises and the crystallization temperature (Tc2) when the temperature drops, and the 5 mm-thick plate (D portion in Fig. 1) measures the haze. Degree%) measurement.
- a dry inert gas (nitrogen gas) purge is used in the molding material hopper to prevent moisture absorption of the chips during molding, using polyester chips that have been dried under reduced pressure using a vacuum dryer DP63 type manufactured by Yamato Scientific. Was.
- the injection conditions were such that the injection speed and the holding pressure were 10%, and the injection pressure and the holding pressure were adjusted so that the molded product weight was 58.6 ⁇ 0.2 g. Adjusted 5MPa lower.
- the cooling time is set to 20 seconds, and the overall cycle time, including the time for removing the molded product, is about 42 seconds.
- the preform has an outer diameter of 29.4 mm, a length of 145.5 mm, and a wall thickness of about 3.7 mm. Cooling water with a water temperature of 18 ° C is constantly introduced into the mold to control the temperature, but the mold surface temperature is about 29 ° C when molding is stable.
- the preform for property evaluation was selected arbitrarily from among the stable molded products at the 20th to 50th shots from the start of molding after the molding material was introduced and the resin was replaced. 2) Molding of stretched hollow molded body (bottle)
- the plug part of the preform was heated and crystallized with a home-made plug part crystallization apparatus.
- this preform is biaxially stretched and blown at a ratio of about 2.5 times in the vertical direction and about 3.8 times in the circumferential direction using a LB-01E molding machine manufactured by CORPOPL AST, and subsequently at about 145 ° C.
- the container was heat-fixed for 7 seconds in a mold set to a capacity of 1500 cc to form a 1500 cc container (body thickness 0.45 mm).
- the stretching temperature was controlled at 100 ° C, and the neutral force of the stable molded product 10 to 30 shots after the start of molding was arbitrarily selected.
- AA content acetoaldehyde content
- CT content cyclic trimer content
- Mn number average molecular weight
- Mw weight average molecular weight
- Mz Z average molecular weight
- the body of the bottle formed by the above method is cut to a large size with a cutter and punched out with a super dumbbell cutter model SDMK-1000D manufactured by Dumbbell Co., Ltd. (according to JISK-7162-5A), and a tensile tester SS-207D- The strength was measured using U (manufactured by Toyo Baldwin Co., Ltd.).
- Free glycol content of polyester hereinafter referred to as free ethylene glycol content Is “free EG content” and free diethylene glycol content is “free DEG content”.
- Approximately 1. ooog of the sample is precisely weighed and dissolved in 8 mL of a mixed solvent of hexafluoroisopropanol z-cloform (2Z3) in an Erlenmeyer flask.
- the mixed solvent is distilled off, and the remaining aqueous phase is filtered using a glass fiber filter.
- the filtrate was made up to 10 mL with water and quantified by gas chromatography.
- Chip cooling water and the like were collected and filtered through a 1G1 glass filter manufactured by Iwaki Glass Co., Ltd., and the filtrate was measured by an inductively coupled plasma emission spectrometer manufactured by Shimadzu Corporation.
- High-purity terephthalic acid and ethyl glycol are continuously supplied to the first esteridani reactor containing the reactants in advance, and the average residence time is 3 hours at about 250 ° C and 0.5 kgZcm 2 G with stirring.
- the reaction was performed.
- the crystalline diacid digermanium is heated and dissolved in water, and the ethylene glycol glycol-added and heat-treated catalyst solution and the phosphoric acid ethylene dalicol solution are separately and continuously fed into the first esteridani reactor. Supplied.
- This reaction product was sent to the second esterification reactor, and reacted under agitation at about 260 ° C. and 0.05 kgZcm 2 G to a predetermined degree of reactivity.
- the esterification reaction product is continuously sent to the first polymerization reactor, and is stirred at about 265 ° C, 25 torr for 1 hour, and then is stirred at the second polymerization reactor at about 265 ° C, 3 torr for 1 hour.
- the mixture was further polymerized for 1 hour at about 275 ° C. and 0.5 to 1 torr under stirring in a third polymerization reactor.
- the number average molecular weight of the obtained PET was 13000, and the intrinsic viscosity (IV) was 0.53.
- the resin was subsequently crystallized at about 155 ° C under a nitrogen atmosphere, preheated to about 200 ° C under a nitrogen atmosphere, and then sent to a continuous solid-state polymerization reactor to undergo solid-state polymerization at about 205 ° C under a nitrogen atmosphere. . After the solid phase polymerization, fines were removed by continuous treatment in the sieving process and the fine removal process.
- the intrinsic viscosity of the obtained PET is 0.70 deciliters Z gram, the number average molecular weight is 20000, the dispersion ratio is 2.6, the content of cyclic trimer is 0.32% by weight, and the density is 1.400 gZcm 3 (crystallinity 56.3%).
- the equipment shown in Fig. 3 is used for water treatment of PET chips.
- the outlet (3) for the mixture of group III polyester chips and treated water, the treated water discharged from the overflow outlet, the treated water discharged from the treatment tank, and the discharge force at the bottom of the treatment tank were also discharged.
- the treated water that has passed through the drainer (4) is sent back to the water treatment tank through the fine powder removal device (5), which is a 30-m continuous filter made of paper, and the piping (6).
- the fine powder removal device (5) which is a 30-m continuous filter made of paper
- the piping (6) Approximately 320 liters of capacity equipped with an inlet (7) for removing treated water, an adsorption tower (8) for adsorbing acetoaldehyde in treated water after removing fine powder, and an inlet (9) for new ion-exchanged water
- a tower-type treatment tank was used.
- High-purity terephthalic acid and ethyl glycol are continuously supplied to the first esteridani reactor containing the reactants in advance, and the average residence time is 3 hours at about 250 ° C and 0.5 kgZcm 2 G with stirring.
- the reaction was performed.
- the crystalline diacid digermanium is heated and dissolved in water, and the ethylene glycol glycol-added and heat-treated catalyst solution and the phosphoric acid ethylene dalicol solution are separately and continuously fed into the first esteridani reactor. Supplied.
- This reaction product was sent to the second esterification reactor, and reacted under agitation at about 260 ° C. and 0.05 kgZcm2G to a predetermined degree of reactivity.
- the esterification reaction product is continuously sent to the first polymerization reactor, and is stirred at about 265 ° C, 25 torr for 1 hour, and then is stirred at the second polymerization reactor at about 265 ° C, 3 torr for 1 hour.
- the mixture was further polymerized for 1 hour at about 275 ° C. and 0.5 to 1 torr under stirring in a third polymerization reactor.
- the number average molecular weight of the obtained PET was 13000, and the intrinsic viscosity (IV) was 0.53.
- This resin is subsequently crystallized at about 155 ° C under a nitrogen atmosphere, preheated to about 200 ° C under a nitrogen atmosphere, and then sent to a continuous solid-state polymerization reactor to undergo solid-state polymerization at about 205 ° C under a nitrogen atmosphere. did. After the solid phase polymerization, fines were removed by continuous treatment in the sieving process and the fine removal process.
- the intrinsic viscosity of the obtained PET resin is 0.85 deciliters Z gram, the number average molecular weight is 260
- the dispersion ratio was 2.6
- the content of the cyclic trimer was 0.30% by weight
- the density was 1.400 gZcm 3 (crystallinity: 56.3%).
- PET Water treatment of PET chips was performed under the same conditions using the same equipment as in the previous period.
- the obtained PET has an acetaldehyde (AA) content of 3 ppm and a cyclic trimer (CT) content of 0 ppm.
- AA acetaldehyde
- CT cyclic trimer
- Table 1 shows the properties of the obtained PET.
- Polyesters 3 and 4 were synthesized in the same manner as described above except that the solid phase polymerization time was changed. Table 1 shows the results.
- Molded STc, Tc2 Value of molded plate molded at ⁇ temperature of 290
- melt polycondensation and solid-phase polymerization were carried out in the same manner as polyester 1 to obtain polyester 5.
- the cooling water at the time of chipping of the melt polycondensation polymer had a sodium content of 0.1 lp pm and a calcium content of about 0.1 pm.
- Ion-exchanged water with 0.2 ppm, magnesium content of about 0.04 ppm, and silicon content of about 0.6 ppm was used.
- the intrinsic viscosity of the obtained PET was 0.70 dL / g, the content of acetoaldehyde (AA) was 3.4 ppm, the content of cyclic trimer was 0.34% by weight, the content of free ethylene glycol was 20 ppm, Free diethylene glycol content is 8ppm, chip shape is elliptical column, chip average weight (W) is 24.7mg, chip crystallinity is 56.3%, sodium content The content was 0.03 ppm, the calcium content was 0.05 ppm, the silicon content was 0.6 ppm, the fine content was about 50 ppm, and the fine melting point was 250 ° C. Table 2 shows the properties of the obtained PET.
- Polyesters 6 and 7 were obtained by reacting in the same manner as for polyester 5, except that the amount of the polycondensation catalyst added and the solid phase polymerization time were changed. Table 2 shows the properties of the obtained PET. The sodium content, calcium content, and silicon content were comparable to polyester 5.
- Polyester 8 was obtained by melt polycondensation and solid phase polymerization in the same manner as polyester 5 except that the above procedure was repeated.
- Table 2 shows the properties of the obtained PET.
- the fine content was about 900 ppm
- the sodium content was 5.
- the calcium content was 5.6 ppm
- the silicon content was 6.5 ppm. (Polyester 9, 10)
- Polyesternole 9 and 10 were obtained in the same manner as polyesternole 5 except that the average chip weight (W) was changed as shown in Table 2 and the solid-phase polymerization time was changed.
- Table 2 shows the properties of the obtained PET.
- the sodium content, calcium content and silicon content were comparable to polyester 1.
- Prepolymer was obtained by melt polycondensation in the same manner as for polyester 5, except that the amount of the polycondensation catalyst was changed. After fine removal of the obtained prepolymer, it was put into a rotary vacuum solid-state polymerization apparatus, crystallized at 70 to 160 ° C under reduced pressure while rotating, and then solid-phase polymerized at 213 ° C. After the solid phase polymerization, fines were removed in a sieving step. Table 2 shows the properties of the obtained PET. The sodium content, calcium content, and silicon content were similar to polyester 5.
- Table 2 shows the properties of the obtained PET.
- the sodium content, calcium content, and silicon content were comparable to polyester 5.
- Polyester 5 except that water containing about 11.9 ppm of sodium, about 10.3 ppm of calcium, and about 15.Oppm of silicon was used as cooling water for chipping, and the sieving and fine removal steps were omitted.
- polyesters 13 and 14 were obtained by melt polycondensation and solid phase polymerization in the same manner as polyester 6. Table 3 shows the properties of the obtained PET. The sodium content, calcium content, and silicon content were about the same as or higher than polyester 8.
- polyester 5 or polyester 6 As a polycondensation catalyst, polyester 5 or polyester 6 was used except that an ethylene glycol solution of basic aluminum acetate, an ethylene glycol solution of Irganox 1222 (Tinoku's Specialty Chemicals) and ethylene glycol preheated were used. The same reaction was carried out to obtain polyesters 15 and 16.
- Table 3 shows the properties of the obtained PET.
- the sodium content, calcium content, and silicon content were comparable to polyester 5.
- Polyesters 17 and 18 were obtained by reacting in the same manner as for polyester 5 or polyester 6 except that an ethylene glycol solution of titanium tetrabutoxide and an ethylene glycol solution of magnesium acetate tetrahydrate were used as the polycondensation catalyst.
- Table 2 shows the properties of the obtained PET.
- the sodium content, calcium content, and silicon content were comparable to polyester 5.
- Polyesters 19 and 20 were obtained by reacting in the same manner as polyester 1 or polyester 2, except that an ethylene glycol solution of antimony trioxide and magnesium acetate tetrahydrate were used as polycondensation catalysts.
- Table 3 shows the properties of the obtained PET. Sodium content, calcium content, silicon content The amount was comparable to polyester 5.
- the above polyester 5 is continuously charged into the following water treatment tank controlled at a treatment water temperature of 95 ° C at a speed of 50 kgZ from the supply port (1) at the upper part of the treatment tank to perform water treatment, and the discharge port at the lower part of the treatment tank From (3), PET chips were continuously extracted together with treated water at a speed of 50 kgZ hours.
- Particle size of 1 to 25 / ⁇ is about 1000 particles / 10mL, sodium content is 0.04ppm, magnesium content Is 0.055 ppm, the calcium content is 0.05 ppm, the silicon content is 0.12 ppm, and the particle size of the recycled water after treatment in the filtration device (5) and adsorption tower (8) is 1 to 40 / ⁇ .
- the number of particles was about 10,000 ZlOmL.
- the equipment shown in Fig. 3 is used for water treatment of polyester chips.
- the treated water that has passed through (4) is sent again to the water treatment tank through the fine-powder removal device (5), which is a continuous filter made of paper.
- the inlet (7), the adsorption tower to adsorb handle Aseta aldehyde fines removal been processed water (8), and a new ion exchange water inlet (9) tower treatment tank having an inner volume of about 50 m 3 equipped with It was used.
- the properties of the obtained PET are the same as those of the polyester 5 shown in Table 3, except that the amount of cyclic trimer increase (ACT amount) upon melting is 0.15% by weight.
- the sodium content, calcium content, and silicon content were similar to polyester 5.
- Polyester 6 was treated with water in the same manner as above to obtain polyester 22.
- the properties of the obtained PET are the same as those of the polyester 6 shown in Table 3, except that the amount of cyclic trimer increase (ACT amount) upon melting is 0.15% by weight.
- the sodium content, calcium content, and silicon content were similar to polyester 5.
- Table 2 Paste of polyethylene terephthalate used
- the polyester resin obtained by blending the synthesized polyester 1 and polyester 2 pellets in a ratio of 7: 3 was subjected to the method (16) under the conditions of a melt resin temperature of 290 ° C and a melt residence time of 110 seconds.
- the preform and the stretch molded bottle obtained by injection molding were evaluated. Table 3 shows the results.
- the values are for a 5mm thick plate (D in Fig. 1) obtained at 290 ° C.
- polyester resins of Examples 2 and 3 were evaluated in the same manner as in Example 1 using the compositions shown in Table 3. Table 3 shows the results.
- Comparative Example 1 The polyester resin of Comparative Example 1 was evaluated in the same manner as in Example 1 with the composition shown in Table 3, and was clearly compared with Example 1 having the same number average molecular weight. The bottle strength where the ⁇ of the composition was high was as low as 186 MPa. Table 3 shows the results.
- Molded plate haze Value of molded plate molded at molding temperature of 290 ° C (Example 4)
- Polyester resin obtained by blending the above-mentioned polyester 5 and polyester 6 pellets at a ratio of 7: 3 was molded at 290 ° C by the method of (15) and the molten resin was heated to 280 ° C.
- the evaluation was performed on the preform and the stretch-formed bottle obtained by the method of (16), except for changing to (16). Table 3 shows the results.
- the stretched hollow molded product has an AA content of 8.5 ppm, a cyclic trimer content of 0.38% by weight, and a free ethylene glycol content of 25 ppm, free diethylene glycol content was 10 ppm, and haze was 1.2%.
- Example 5 The polyester resin of Example 5 was evaluated in the same manner as in Example 4 with the composition shown in Table 4 using the water-treated PET mixture. Table 3 shows the results. All the properties evaluated were as good as in Example 4.
- the amount of increase in cyclic trimer (ACT amount) during melting was 0.15% by weight, which was low.
- Example 6 The polyester resin composition of Example 6 in which 1, 70 parts by weight of polyester, 2, 30 parts by weight of polyester, and 1 part by weight of polyamide were blended was evaluated in the same manner as in Example 4. Table 4 shows the results.
- the AA content of the stretched hollow molded article was as good as 1.5%, which is as low as 5.7 ppm, and there was no problem with other characteristics.
- Molded sheet haze (%) No mottling (% ⁇ ) Value of molded sheet molded at a molding temperature of 280 ° C
- Example 5 With the composition shown in Table 5, the polyester resin of Example 7 was evaluated in the same manner as in Example 4. Table 5 shows the results. All the properties evaluated were as good as in Example 4.
- Example 5 According to the composition shown in Table 5, the polyester resin of Example 8 was treated in the same manner as in Example 4. An evaluation was performed. Table 5 shows the results. All the properties evaluated were as good as in Example 4.
- Example 5 With the composition shown in Table 5, the polyester resin of Example 9 was evaluated in the same manner as in Example 4. Table 5 shows the results. All the properties evaluated were as good as in Example 4.
- Molding was evaluated in the same manner as in Example 4, except that the same polyester resin as in Example 4 was used and the melt resin temperature was changed to 300 ° C and the melt residence time was changed to 520 seconds.
- the shape of the plug part of the preform was poor and the dimensions were out of specification, which was "X”.
- the appearance of the stretched hollow molded article was " ⁇ ", the haze was good at 1.3%, but the AA content was 32. lppm, free EG content was 64ppm, free DEG content was 28ppm, and bottle body strength was bad at 180Mpa.
- the present invention provides a polyester resin which gives a molded article having a small amount of aldehydes generated during molding due to improved flow characteristics and having excellent mechanical properties such as pressure resistance when molded. provide.
- the polyester resin of the present invention has improved flow characteristics, so that a molded article excellent in heat-resistant dimensional stability with less distortion during molding,
- hollow molded products can be efficiently produced by high-speed molding, and give molded products with very good pressure resistance and heat-resistant dimensional stability.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Polyesters Or Polycarbonates (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
Description
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006161019A (ja) * | 2004-11-09 | 2006-06-22 | Toyo Seikan Kaisha Ltd | 圧縮成形用ポリエステル樹脂及びその製造方法、並びにプリフォームの製造方法 |
WO2009128318A1 (ja) * | 2008-04-17 | 2009-10-22 | 大和製罐株式会社 | 芳香族系ポリエステル樹脂及びその製造方法 |
JP2011218717A (ja) * | 2010-04-13 | 2011-11-04 | Toray Ind Inc | ポリエステル成形体の製造方法 |
JP2016035025A (ja) * | 2014-08-04 | 2016-03-17 | ユニチカ株式会社 | ポリエステル樹脂組成物及びそれからなるブロー成形品 |
JP2017203116A (ja) * | 2016-05-12 | 2017-11-16 | 北海製罐株式会社 | ポリエチレンテレフタレート樹脂組成物、ポリエチレンテレフタレート樹脂製ボトル及びその製造方法 |
EP4089140A1 (en) * | 2021-05-04 | 2022-11-16 | Iconic Fusions Co., Ltd. | Ptp blister packaging material, ptp blister package containing the same and manufacturing method thereof |
Families Citing this family (1)
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KR20200016021A (ko) | 2018-08-06 | 2020-02-14 | 유한회사 삼성하이텍 | 기능성 액체보관 다층용기 제조방법 |
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JPS56154039A (en) * | 1980-05-01 | 1981-11-28 | Teijin Ltd | Manufacture of polyester vessel |
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JPH11236493A (ja) * | 1998-02-20 | 1999-08-31 | Kuraray Co Ltd | ポリエステル樹脂組成物および製造法 |
JP2002069165A (ja) * | 2000-06-13 | 2002-03-08 | Mitsubishi Gas Chem Co Inc | ポリエステル樹脂 |
JP2002020467A (ja) * | 2000-07-12 | 2002-01-23 | Toray Ind Inc | 熱可塑性ポリエステル樹脂 |
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JP2004043792A (ja) * | 2002-05-22 | 2004-02-12 | Toyobo Co Ltd | ポリエステル組成物並びにそれからなる中空成形体、シ−ト状物及び延伸フイルム |
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2005
- 2005-04-11 JP JP2006512328A patent/JP5119464B2/ja active Active
- 2005-04-11 WO PCT/JP2005/007024 patent/WO2005100440A1/ja active Application Filing
- 2005-04-11 KR KR1020067021417A patent/KR101018199B1/ko not_active IP Right Cessation
- 2005-04-11 TW TW094111339A patent/TWI367905B/zh not_active IP Right Cessation
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JPH10287799A (ja) * | 1997-04-11 | 1998-10-27 | Mitsubishi Chem Corp | ポリエステル容器の製造方法 |
JP2003012780A (ja) * | 2001-04-27 | 2003-01-15 | Asahi Kasei Corp | ポリトリメチレンテレフタレート重合体 |
JP2003048965A (ja) * | 2001-05-29 | 2003-02-21 | Asahi Kasei Corp | ポリトリメチレンテレフタレート重合体 |
JP2004043793A (ja) * | 2002-05-22 | 2004-02-12 | Toyobo Co Ltd | ポリエステル組成物並びにそれからなる中空成形体、シ−ト状物及び延伸フイルム |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2006161019A (ja) * | 2004-11-09 | 2006-06-22 | Toyo Seikan Kaisha Ltd | 圧縮成形用ポリエステル樹脂及びその製造方法、並びにプリフォームの製造方法 |
WO2009128318A1 (ja) * | 2008-04-17 | 2009-10-22 | 大和製罐株式会社 | 芳香族系ポリエステル樹脂及びその製造方法 |
JP2011218717A (ja) * | 2010-04-13 | 2011-11-04 | Toray Ind Inc | ポリエステル成形体の製造方法 |
JP2016035025A (ja) * | 2014-08-04 | 2016-03-17 | ユニチカ株式会社 | ポリエステル樹脂組成物及びそれからなるブロー成形品 |
JP2017203116A (ja) * | 2016-05-12 | 2017-11-16 | 北海製罐株式会社 | ポリエチレンテレフタレート樹脂組成物、ポリエチレンテレフタレート樹脂製ボトル及びその製造方法 |
EP4089140A1 (en) * | 2021-05-04 | 2022-11-16 | Iconic Fusions Co., Ltd. | Ptp blister packaging material, ptp blister package containing the same and manufacturing method thereof |
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KR20070012410A (ko) | 2007-01-25 |
JPWO2005100440A1 (ja) | 2008-03-06 |
KR101018199B1 (ko) | 2011-02-28 |
JP5119464B2 (ja) | 2013-01-16 |
TW200609270A (en) | 2006-03-16 |
TWI367905B (en) | 2012-07-11 |
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