WO2023021974A1 - 透湿性に優れたポリエステルエラストマー樹脂組成物 - Google Patents
透湿性に優れたポリエステルエラストマー樹脂組成物 Download PDFInfo
- Publication number
- WO2023021974A1 WO2023021974A1 PCT/JP2022/029534 JP2022029534W WO2023021974A1 WO 2023021974 A1 WO2023021974 A1 WO 2023021974A1 JP 2022029534 W JP2022029534 W JP 2022029534W WO 2023021974 A1 WO2023021974 A1 WO 2023021974A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polyester elastomer
- poly
- glycol
- resin composition
- soft segment
- Prior art date
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 135
- 239000000806 elastomer Substances 0.000 title claims abstract description 135
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- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 117
- -1 alicyclic diol Chemical class 0.000 claims abstract description 116
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229920001451 polypropylene glycol Polymers 0.000 claims abstract description 43
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- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 27
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- 239000004417 polycarbonate Substances 0.000 claims abstract description 12
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims abstract description 8
- 125000003118 aryl group Chemical group 0.000 claims abstract description 8
- 229920003232 aliphatic polyester Polymers 0.000 claims abstract description 6
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- 239000004721 Polyphenylene oxide Substances 0.000 claims description 9
- 125000002947 alkylene group Chemical group 0.000 claims description 2
- 239000010409 thin film Substances 0.000 abstract description 18
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- 238000000034 method Methods 0.000 description 47
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 36
- 229920001223 polyethylene glycol Polymers 0.000 description 26
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 description 25
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 description 24
- 239000000126 substance Substances 0.000 description 24
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- SRPWOOOHEPICQU-UHFFFAOYSA-N trimellitic anhydride Chemical compound OC(=O)C1=CC=C2C(=O)OC(=O)C2=C1 SRPWOOOHEPICQU-UHFFFAOYSA-N 0.000 description 14
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- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 8
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- 239000002530 phenolic antioxidant Substances 0.000 description 8
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- SDQROPCSKIYYAV-UHFFFAOYSA-N 2-methyloctane-1,8-diol Chemical compound OCC(C)CCCCCCO SDQROPCSKIYYAV-UHFFFAOYSA-N 0.000 description 2
- SXFJDZNJHVPHPH-UHFFFAOYSA-N 3-methylpentane-1,5-diol Chemical compound OCCC(C)CCO SXFJDZNJHVPHPH-UHFFFAOYSA-N 0.000 description 2
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- 229920000742 Cotton Polymers 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
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- QYQADNCHXSEGJT-UHFFFAOYSA-N cyclohexane-1,1-dicarboxylate;hydron Chemical compound OC(=O)C1(C(O)=O)CCCCC1 QYQADNCHXSEGJT-UHFFFAOYSA-N 0.000 description 1
- ZWAJLVLEBYIOTI-UHFFFAOYSA-N cyclohexene oxide Chemical group C1CCCC2OC21 ZWAJLVLEBYIOTI-UHFFFAOYSA-N 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- JGFBRKRYDCGYKD-UHFFFAOYSA-N dibutyl(oxo)tin Chemical compound CCCC[Sn](=O)CCCC JGFBRKRYDCGYKD-UHFFFAOYSA-N 0.000 description 1
- 239000012975 dibutyltin dilaurate Substances 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- GPLRAVKSCUXZTP-UHFFFAOYSA-N diglycerol Chemical compound OCC(O)COCC(O)CO GPLRAVKSCUXZTP-UHFFFAOYSA-N 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 208000028659 discharge Diseases 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- ANSXAPJVJOKRDJ-UHFFFAOYSA-N furo[3,4-f][2]benzofuran-1,3,5,7-tetrone Chemical compound C1=C2C(=O)OC(=O)C2=CC2=C1C(=O)OC2=O ANSXAPJVJOKRDJ-UHFFFAOYSA-N 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 125000003827 glycol group Chemical group 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 235000013980 iron oxide Nutrition 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 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
- 238000003475 lamination Methods 0.000 description 1
- 229940046892 lead acetate Drugs 0.000 description 1
- 150000002611 lead compounds Chemical class 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000012567 medical material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000006078 metal deactivator Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- ITNVWQNWHXEMNS-UHFFFAOYSA-N methanolate;titanium(4+) Chemical compound [Ti+4].[O-]C.[O-]C.[O-]C.[O-]C ITNVWQNWHXEMNS-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- FZZQNEVOYIYFPF-UHFFFAOYSA-N naphthalene-1,6-diol Chemical compound OC1=CC=CC2=CC(O)=CC=C21 FZZQNEVOYIYFPF-UHFFFAOYSA-N 0.000 description 1
- RXOHFPCZGPKIRD-UHFFFAOYSA-N naphthalene-2,6-dicarboxylic acid Chemical group C1=C(C(O)=O)C=CC2=CC(C(=O)O)=CC=C21 RXOHFPCZGPKIRD-UHFFFAOYSA-N 0.000 description 1
- DFQICHCWIIJABH-UHFFFAOYSA-N naphthalene-2,7-diol Chemical compound C1=CC(O)=CC2=CC(O)=CC=C21 DFQICHCWIIJABH-UHFFFAOYSA-N 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- OEIJHBUUFURJLI-UHFFFAOYSA-N octane-1,8-diol Chemical compound OCCCCCCCCO OEIJHBUUFURJLI-UHFFFAOYSA-N 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 150000003891 oxalate salts Chemical class 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920003224 poly(trimethylene oxide) Polymers 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- HHDOORYZQSEMGM-UHFFFAOYSA-L potassium;oxalate;titanium(4+) Chemical compound [K+].[Ti+4].[O-]C(=O)C([O-])=O HHDOORYZQSEMGM-UHFFFAOYSA-L 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000013557 residual solvent Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000035900 sweating Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 150000003606 tin compounds Chemical class 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
- 235000014692 zinc oxide Nutrition 0.000 description 1
- RNWHGQJWIACOKP-UHFFFAOYSA-N zinc;oxygen(2-) Chemical class [O-2].[Zn+2] RNWHGQJWIACOKP-UHFFFAOYSA-N 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical group O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 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
- C08G63/66—Polyesters containing oxygen in the form of ether groups
Definitions
- the present invention relates to a polyester elastomer resin composition with excellent moisture permeability.
- the present invention provides a polyester elastomer resin composition that is highly moisture-permeable and flexible, yet has excellent water pressure resistance, wear resistance, and thin film formability, and has low water absorption, so that physical properties change little due to water absorption. Regarding.
- Polyester-polyether type polyester elastomers which have aromatic dicarboxylic acids and aliphatic glycols as hard segments and poly(alkylene oxide) glycol as soft segments, have been used in automobile parts, industrial parts, electrical and electronic parts, etc. has been used.
- films using this thermoplastic polyester elastomer have been used as medical materials including medical patches such as transdermal absorbents, adhesive bandages, medical patch materials, bandages, and wound dressings, tape bases for fixing paper diapers, etc. It is attracting attention as a sanitary material such as tape base material for fixing napkins, rainwear by bonding with textile materials, clothing materials such as jackets, protective clothing, and tents, and building materials.
- Patent Document 1 discloses aromatic polyester units as hard segments, tetrahydrofuran (tetramethylene oxide, THF) units and ethylene oxide (A polyester elastomer has been proposed in which two different types of polyether glycol units (EO) units are used as soft segments.
- THF tetrahydrofuran
- EO polyether glycol units
- Patent Document 2 proposes a polyester elastomer with high moisture permeability and low water absorption, containing 70% by mass or more of a soft segment component containing polyether glycol similarly copolymerized with THF/EO.
- polyester elastomers such as those proposed in Patent Documents 1 and 2 have high moisture permeability as evaluated by the calcium chloride method of JIS-Z-0208 (equivalent to JIS-L-1099A-1 method), but JIS-L It was characterized by low moisture permeability evaluated by the -1099B-1 method (potassium acetate method). The difference is that the JIS-L-1099A-1 method evaluates without direct contact with water, whereas the JIS-L-1099B-1 method evaluates with direct water contact.
- the JIS-L-1099B-1 method which evaluates the above-mentioned direct water contact, is more comfortable than the JIS-L-1099A-1 method.
- As a property it is possible to evaluate an accurate moisture permeability that is in line with the actual situation. Therefore, there is a demand for a polyester elastomer resin composition having excellent moisture permeability as evaluated by the JIS-L-1099B-1 method.
- the present invention has been invented in view of the current state of the prior art, and its purpose is to exhibit high moisture permeability and water pressure resistance when evaluated by the JIS-L-1099B-1 method.
- the object of the present invention is to provide a polyester elastomer resin composition which is excellent in abrasion resistance, low water absorption, and thin film formability.
- soft segments constituting a polyester elastomer include poly(ethylene oxide) glycol and poly(ethylene oxide) and poly(propylene oxide) glycol as constituent components.
- any of the poly (alkylene oxide) block copolymers and setting the content of poly (ethylene oxide) glycol in the soft segment, the content of the soft segment, and the melt tension of the composition to specific ranges, The inventors have found that it is possible to provide a polyester elastomer resin composition excellent in flexibility, moisture permeability, water pressure resistance, wear resistance, and thin film formability, and have completed the present invention.
- the present invention has the following configurations (1) to (7).
- the soft segment is at least one poly(ethylene oxide) glycol selected from the group consisting of poly(ethylene oxide) glycol and poly(alkylene oxide) block copolymer containing poly(ethylene oxide) glycol and poly(propylene oxide) glycol as components alkylene oxide), The content of poly(ethylene oxide) glycol in the soft segment is 15 to 45% by mass in the total composition
- the soft segment is poly(ethylene oxide) glycol, and a poly(alkylene oxide) block copolymer containing poly(ethylene oxide) glycol and poly(propylene oxide) glycol as constituents (1 ), the polyester elastomer resin composition described in .
- the polyester elastomer resin composition of (7) A film made of the polyester elastomer resin composition according to any one of (1) to (6).
- the polyester elastomer resin composition of the present invention is excellent in thin-film formability, moisture permeability and flexibility, and is also excellent in water pressure resistance, wear resistance, and low water absorption. of clothing intermediates can be stably produced.
- the polyester elastomer resin composition of the present invention can be suitably used as an intermediate material for clothing that is extremely comfortable during exercise or work in which the amount of perspiration increases rapidly.
- polyester elastomer resin composition of the present invention will be described in detail below.
- the polyester resin composition of the present invention comprises a hard segment composed of a polyester comprising an aromatic dicarboxylic acid and an aliphatic and / or alicyclic diol, and an aliphatic polyether, an aliphatic polyester, and an aliphatic polycarbonate. It contains a thermoplastic polyester elastomer to which at least one soft segment selected from the group consisting of is bonded.
- aromatic dicarboxylic acid constituting the hard segment polyester general aromatic dicarboxylic acids can be widely used. 6-naphthalenedicarboxylic acid is preferred).
- the content of these aromatic dicarboxylic acids is preferably 70 mol % or more, more preferably 80 mol % or more, of the total dicarboxylic acids constituting the hard segment polyester.
- Other dicarboxylic acid components include aromatic dicarboxylic acids such as diphenyldicarboxylic acid, isophthalic acid and 5-sodiumsulfoisophthalic acid, alicyclic dicarboxylic acids such as cyclohexanedicarboxylic acid and tetrahydrophthalic anhydride, succinic acid, glutaric acid, Aliphatic dicarboxylic acids such as adipic acid, azelaic acid, sebacic acid, dodecanedioic acid, dimer acid, hydrogenated dimer acid, and the like are included. These can be used in an amount that does not significantly lower the melting point of the resin, and the amount thereof is 30 mol % or less, preferably 20 mol % or less, more preferably 10 mol % or
- aliphatic and / or alicyclic diols constituting the hard segment polyester general aliphatic or alicyclic diols can be widely used, but alkylene glycols having 2 to 8 carbon atoms are mainly used.
- alkylene glycols having 2 to 8 carbon atoms are mainly used.
- Specific examples include ethylene glycol, 1,3-propylene glycol, 1,4-butanediol, 1,6-hexanediol, 1,4-cyclohexanedimethanol and the like.
- ethylene glycol or 1,4-butanediol is preferable.
- the components constituting the hard segment polyester include butylene terephthalate units (units composed of terephthalic acid and 1,4-butanediol) or butylene naphthalate units (2,6-naphthalenedicarboxylic acid and 1,4-butanediol unit) is preferable from the viewpoint of physical properties, moldability and cost performance.
- aromatic polyester suitable as the polyester constituting the hard segment when produced in advance and then copolymerized with the soft segment component, the aromatic polyester can be easily obtained according to a normal polyester production method. Also, such polyester preferably has a number average molecular weight of 4,000 to 100,000.
- the soft segment of the thermoplastic polyester elastomer is at least one selected from the group consisting of aliphatic polyethers, aliphatic polyesters and aliphatic polycarbonates.
- Aliphatic polyethers include poly(ethylene oxide) glycol, poly(propylene oxide) glycol, poly(tetramethylene oxide) glycol, poly(hexamethylene oxide) glycol, poly(trimethylene oxide) glycol, co-polymer of ethylene oxide and propylene oxide. polymers, ethylene oxide adducts of poly(propylene oxide) glycol, copolymers of ethylene oxide and tetrahydrofuran, and the like.
- Aliphatic polyesters include poly( ⁇ -caprolactone), polyenantholactone, polycaprylollactone, and polybutylene adipate. Among these, poly( ⁇ -caprolactone) and polybutylene adipate are preferred from the viewpoint of elastic properties.
- the aliphatic polycarbonate preferably consists mainly of aliphatic diol residues having 2 to 12 carbon atoms.
- these aliphatic diols include ethylene glycol, 1,3-propylene glycol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 1,8-octanediol, 2, 2-dimethyl-1,3-propanediol, 3-methyl-1,5-pentanediol, 2,4-diethyl-1,5-pentanediol, 1,9-nonanediol, 2-methyl-1,8- octanediol and the like.
- aliphatic diols having 5 to 12 carbon atoms are preferred from the viewpoint of the flexibility and low-temperature properties of the resulting thermoplastic polyester elastomer.
- These components may be used alone, or two or more of them may be used in combination according to the cases described below.
- the aliphatic polycarbonate diol constituting the soft segment of the polyester elastomer used in the present invention preferably has a low melting point (for example, 70°C or lower) and a low glass transition temperature.
- a low melting point for example, 70°C or lower
- a low glass transition temperature for example, 70°C or lower
- an aliphatic polycarbonate diol obtained by copolymerizing an appropriate amount of, for example, 3-methyl-1,5-pentanediol with the above aliphatic polycarbonate diol has a glass transition point higher than that of the original aliphatic polycarbonate diol. is slightly higher, but the melting point is lowered or becomes amorphous, so the low-temperature characteristics are good.
- an aliphatic polycarbonate diol composed of 1,9-nonanediol and 2-methyl-1,8-octanediol has a melting point of about 30°C and a glass transition temperature of about -70°C, which are sufficiently low. Good characteristics.
- the polyester elastomer used in the present invention is preferably a copolymer containing terephthalic acid, 1,4-butanediol, and an aliphatic polyether as main components.
- terephthalic acid is preferably 40 mol% or more, more preferably 70 mol% or more, further preferably 80 mol% or more, and 90 mol% or more. It is particularly preferred to have
- the soft segment content in the polyester elastomer used in the present invention is 24-70% by mass from the viewpoint of achieving the object of the present invention. It is preferably 26 to 67% by mass, more preferably 28 to 63% by mass, still more preferably 30 to 59% by mass, still more preferably 32 to 59% by mass, and particularly preferably 32 to 49% by mass. If the content is less than the above range, the water absorption may be low and the moisture permeability may be poor. In addition, there is a possibility that the flexibility may be lowered and the tactile sensation may be deteriorated. On the other hand, if it exceeds the above range, the water pressure resistance may become insufficient, and the abrasion resistance may also deteriorate.
- the aliphatic polyether is contained in the soft segment in an amount of 80% by mass or more.
- poly (ethylene oxide) glycol and poly (alkylene oxide) block copolymer containing poly (ethylene oxide) glycol and poly (propylene oxide) glycol as constituent components from the viewpoint of moisture permeability It contains at least one poly(alkylene oxide) selected from the group.
- poly (ethylene oxide) glycol and a combination of poly (alkylene oxide) block copolymers containing poly (ethylene oxide) glycol and poly (propylene oxide) glycol as constituents or poly (ethylene oxide) glycol and poly (propylene It is the sole use of poly(alkylene oxide) block copolymers containing oxide) glycols as constituents.
- the number average molecular weights of the poly(ethylene oxide) glycol and the poly(alkylene oxide) block copolymer containing poly(ethylene oxide) glycol and poly(propylene oxide) glycol as constituent components are preferably 500 to 4000, respectively. It is more preferably 800 or more and 3500 or less, and even more preferably 1000 or more and 3000 or less. If the number average molecular weight is less than the above range, it may be difficult to develop elastomeric properties. On the other hand, if the number-average molecular weight exceeds the above range, the compatibility with the hard segment component may be lowered, making block-like copolymerization difficult.
- the content of poly(ethylene oxide) glycol in the soft segment of the polyester elastomer is 15-45% by mass in the entire composition. 21 to 42% by mass is more preferable, 22 to 38% by mass is even more preferable, and 26 to 40% by mass is even more preferable. It should be noted that this content is the content "in the total composition", not the content "in the soft segment”. If the content is less than the above range, the moisture permeability may be poor, and if it exceeds the above range, the polymerizability may become unstable, making it difficult to obtain a polyester elastomer with a desired molecular weight.
- the soft segment of the polyester elastomer preferably contains 30 to 45% by mass of poly(ethylene oxide) glycol having a number average molecular weight of 1800 or more.
- the number average molecular weight is more preferably 2000 or more, and still more preferably 2100 or more. This content is the content in the soft segment. If the number average molecular weight is within the above range, the polyester elastomer is excellent in moisture permeability and low water absorption. Also, the content is more preferably 32 to 43% by mass, even more preferably 34 to 41% by mass. When the content satisfies the above range, the balance between moisture permeability and water pressure resistance is particularly excellent.
- the polyester elastomer used in the present invention can be produced by a conventionally known method.
- a lower alcohol diester of a dicarboxylic acid, an excessive amount of a low molecular weight glycol, and a soft segment component are transesterified in the presence of a catalyst, and the resulting reaction product is polycondensed.
- the polyester elastomer used in the present invention contains only a small amount of tri- or more functional polycarboxylic acid or polyol component (e.g., trimellitic anhydride, benzophenonetetracarboxylic acid, trimethylolpropane, glycerin). , pyromellitic anhydride) can also be included as a copolymer component.
- the total amount of tri- or more functional polycarboxylic acids and all polyol components is 5 mol % or less, preferably 3 mol % or less, when the total of all polycarboxylic acid components and polyol components in the polyester is 100 mol %. If it exceeds 5 mol %, the resin will contain a large amount of gel, which is not preferable because it will cause lumps during film formation.
- the polyester elastomer used in the present invention preferably has a reduced viscosity of 1.0 to 4.0.
- the reduced viscosity is more preferably 1.1 to 3.6, still more preferably 1.2 to 3.2, particularly preferably 1.3 to 2.8, particularly preferably 1.4 to 2.5. be. If the reduced viscosity is less than the above range, the mechanical properties may be poor. When the above range is exceeded, fluidity is poor, resulting in poor thin-film formability.
- the polyester elastomer resin composition of the present invention may contain a cross-linking agent as a means of increasing the melt tension other than the use of a tri- or higher functional copolymer component, or may be used in combination.
- the cross-linking agent is a reactive compound (hereinafter sometimes simply referred to as a reactive compound) having a functional group capable of reacting with the hydroxyl group or carboxyl group of the polyester elastomer.
- the reactive functional group is preferably at least one selected from an epoxy group (glycidyl group), an acid anhydride group, a carbodiimide group and an isocyanate group, more preferably an epoxy group (glycidyl group). Two or more such functional groups are preferably contained per molecule of the reactive compound.
- the polyfunctional epoxy compound having two or more epoxy groups specifically includes 1,6-dihydroxynaphthalene diglycidyl ether having two epoxy groups and 1, 3-bis(oxiranylmethoxy)benzene, 1,3,5-tris(2,3-epoxypropyl)-1,3,5-triazine-2,4,6(1H,3H) with three epoxy groups ,5H)-trione, diglycerol triglycidyl ether, 1-chloro-2,3-epoxypropane ⁇ formaldehyde ⁇ 2,7-naphthalenediol polycondensate having four epoxy groups, and pentaerythritol polyglycidyl ether.
- a polyfunctional epoxy compound having heat resistance in its skeleton is preferable.
- Particularly preferred are bifunctional or tetrafunctional epoxy compounds having a naphthalene structure in the skeleton, or trifunctional epoxy compounds having a triazine structure in the skeleton.
- Functional epoxy compounds are preferred.
- the cross-linking agent used in the present invention includes a vinyl aromatic monomer containing two or more glycidyl groups per molecule, a weight average molecular weight of 4000 to 25000, and (X) 20 to 99% by mass, ( Y) 1 to 80% by mass of glycidyl (meth)acrylate and (Z) 0 to 79% by mass of a vinyl group-containing monomer other than (X) that does not contain an epoxy group is a styrene-based copolymer that is a polyester elastomer It is preferable from the viewpoint that the compatibility with is good and the molecular weight distribution becomes wider.
- (X) is 20 to 99% by mass
- (Y) is 1 to 80% by mass
- (Z) is 0 to 40% by mass. 10 to 75% by mass of (Y) and 0 to 35% by mass of (Z). Since these compositions affect the concentration of functional groups that contribute to the reaction with the polyester elastomer, they are preferably controlled within the above range.
- Examples of the (X) vinyl aromatic monomer include styrene and ⁇ -methylstyrene.
- Examples of the (Y) glycidyl alkyl (meth)acrylate include glycidyl (meth)acrylate, (meth)acrylic acid ester having a cyclohexene oxide structure, (meth)acryl glycidyl ether, and the like. Glycidyl (meth)acrylate is preferred because of its high properties.
- Examples of (Z) other vinyl group-containing monomers include methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, butyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, (Meth)acryl having an alkyl group having 1 to 22 carbon atoms (the alkyl group may be linear or branched) such as cyclohexyl (meth)acrylate, stearyl (meth)acrylate, methoxyethyl (meth)acrylate, etc.
- acid alkyl esters (meth)acrylic acid polyalkylene glycol esters, (meth)acrylic acid alkoxyalkyl esters, (meth)acrylic acid hydroxyalkyl esters, (meth)acrylic acid dialkylaminoalkyl esters, (meth)acrylic acid benzyl esters, (Meth)acrylic acid phenoxyalkyl ester, (meth)acrylic acid isobornyl ester, (meth)acrylic acid alkoxysilylalkyl ester and the like.
- (meth)acrylamide, (meth)acryldialkylamide, vinyl esters such as vinyl acetate, aromatic vinyl monomers such as vinyl ethers and (meth)allyl ethers, ⁇ -olefin monomers such as ethylene and propylene etc. can also be used as (Z) other vinyl group-containing monomers.
- the weight average molecular weight of the copolymer is preferably 4,000 to 25,000.
- the weight average molecular weight is more preferably 5000-15000. If the weight-average molecular weight is less than the above range, the unreacted copolymer may volatilize during the molding process or bleed out onto the surface of the molded product, causing surface contamination. On the other hand, if the weight-average molecular weight exceeds the above range, the reaction with the polyester elastomer will be delayed, resulting in an insufficient effect of increasing the molecular weight. There is a greater possibility that the properties such as heat resistance that are originally possessed by the
- the epoxy value of the copolymer is preferably 400 to 2500 equivalents/1 ⁇ 10 6 g, more preferably 500 to 1500 equivalents/1 ⁇ 10 6 g, still more preferably 600 to 1000 equivalents/1 ⁇ 10 6 g. If the epoxy value is less than the above range, the effect of thickening may not be exhibited.
- the amount of the cross-linking agent compounded is preferably 0.1 to 4.5 parts by mass, more preferably 0.1 to 4.0 parts by mass, and still more preferably 0 parts by mass with respect to 100 parts by mass of the thermoplastic polyester elastomer. .1 to 3.0 parts by mass, particularly preferably 0.1 to 2.0 parts by mass. If the amount of the cross-linking agent is less than the above range, the targeted molecular chain elongation effect will be insufficient. tend to affect the mechanical properties of In particular, when the cross-linking agent is an epoxy compound, on the other hand, if the above range is exceeded, irregularities may occur on the surface of the molded article due to aggregation curing of the epoxy compound. Further, when the cross-linking agent is a carbodiimide compound, if the above range is exceeded, hydrolysis of the polyester elastomer occurs due to the basicity of the polycarbodiimide compound, which tends to affect the mechanical properties.
- melt polymerization method a solution polymerization method, a solid phase polymerization method, or the like
- melt polymerization method it may be a transesterification method or a direct polymerization method.
- solid phase polymerization it is of course preferable to carry out solid phase polymerization after melt polymerization.
- the chain may be extended with an isocyanate compound, an epoxy compound, or the like.
- Titanium catalysts more specifically tetraalkyl titanates such as tetrabutyl titanate and tetramethyl titanate, and metal oxalate salts such as titanium potassium oxalate are preferred.
- Other catalysts include tin compounds such as dibutyltin oxide and dibutyltin dilaurate, and lead compounds such as lead acetate.
- the obtained polyester elastomer contains known antioxidants such as hindered phenol, sulfur, and phosphorus; light stabilizers, antistatic agents, lubricants, molecular modifiers such as peroxides, metal deactivators, organic and inorganic nucleating agents, neutralizers, antacids, antibacterial agents, fluorescent brightening agents
- antioxidants such as hindered phenol, sulfur, and phosphorus
- molecular modifiers such as peroxides, metal deactivators, organic and inorganic nucleating agents, neutralizers, antacids, antibacterial agents, fluorescent brightening agents
- Inorganic fibrous materials such as glass fiber, carbon fiber silica fiber, alumina fiber, carbon black, silica, quartz powder, glass beads, glass powder, calcium silicate, kaolin, talc, clay, diatomaceous earth, wollastonite, etc.
- Metal oxides such as silicates, iron oxides, titanium oxides, zinc oxides and alumina; metal carbonates such as calcium carbonate and barium carbonate;
- plate-like fillers such as various metal powders, flame retardants, flame retardant aids, organic and inorganic pigments, and the like can be added.
- an ultraviolet absorber and a hindered amine light stabilizer it is preferable to combine an ultraviolet absorber and a hindered amine light stabilizer.
- the polyester elastomer resin composition of the present invention has a melt tension of 2.5 to 20 cN measured at a melting point of the resin composition +10°C and a capillary diameter of 2.0 x length of 20.0 mm.
- the melt tension is preferably 2.5-18 cN, more preferably 2.7-16 cN, still more preferably 2.9-14 cN. If it is within the above range, it is excellent in thin film formability, and even with a thin film thickness of, for example, 20 ⁇ m or less, a uniform thin film with high toughness and a smooth surface can be obtained.
- the thickness is less than the above range, it is difficult to discharge a uniform film thickness in the width direction when discharging from the die, and there is a possibility that a uniform thin film cannot be obtained due to pulsation or the like. In addition, there is a possibility that the external appearance may be deteriorated, for example, flow marks may occur. On the other hand, when it is larger than the above range, it is difficult to increase the film formation speed, and there is a possibility that wrinkles or surface roughness may easily occur.
- the melt tension was measured using Capilograph 1D manufactured by Toyo Seiki Seisakusho Co., Ltd., capillary: diameter 2.0 mm, length 20 mm, cylinder diameter: 9.55 mm, temperature: melting point + 10 ° C., cylinder extrusion speed: 20 mm / is the melt tension when measured at a take-off acceleration of 40 m/min 2 until the take-off speed is 10 m/min.
- the polyester elastomer resin composition of the present invention can be used alone or as a laminate as a film or coating. When it is formed into a film, it can be manufactured using conventionally known film-forming techniques such as a melt molding method and a solution casting method.
- Methods for forming a film by melt molding include a method using a T-die, a melt extrusion method such as an inflation method, a calendering method, a hot press method, an injection molding method, and the like.
- a melt extrusion method using a T-die method which can reduce unevenness in thickness, is preferable.
- the conditions of the melt molding method are appropriately selected according to the molding method.
- the polymer temperature is appropriately selected within the range of the crystalline melting point or higher and the decomposition temperature or lower. It is molded in a temperature range 10 to 30°C higher than the crystalline melting point.
- a film can be produced by the solution casting method, for example, by casting a liquid composition obtained by dissolving or dispersing each component in a solvent onto a suitable support, and then , the solvent can be removed by drying.
- the support is not particularly limited, and those used in a general solution casting method are used, for example, a glass plate, a metal drum, a steel belt, a fluororesin belt, a flat plate such as a metal foil, a belt, or a roll. can be mentioned.
- Solvents include phenols such as phenol, o-chlorophenol, m-chlorophenol, p-chlorophenol, o-cresol, m-cresol and p-cresol; Halogenated solvents such as ethylene chloride and hexafluoroisopropanol can be used. These solvents can be used alone or in combination of two or more.
- the concentration of the polyester elastomer in the solvent is appropriately selected according to the thickness of the film to be produced, but is usually in the range of 0.1 to 60% by mass, preferably 1 to 50% by mass, more preferably 5 to 45% by mass. is.
- the method of casting the liquid composition onto the support is not particularly limited, but for example, a barcoder, T-die, T-die with bar, doctor knife, Meir bar, roll coat, die coat, etc. may be used. It can be carried out. Casting of the liquid composition may be carried out by spraying, brushing, rolling, spin coating, dipping, or the like. If the desired film thickness cannot be obtained with one application, the application can be repeated.
- Removal of the solvent by drying is not particularly limited and can be carried out according to a conventional method. .5% by mass or less.
- the film on a flat plate or roll is dried at a temperature range of room temperature to 100° C., preferably room temperature to 80° C., with a residual solvent concentration of 5% by mass or less, preferably 2% by mass or less, more preferably 1% by mass or less. , and most preferably to 0.5 mass % or less.
- the drying temperature is too high, the film foams as the solvent volatilizes. Drying of the solvent can be performed under reduced pressure, if necessary.
- the film obtained from the polyester elastomer resin composition of the present invention can be used as an unstretched film, or can be used as a uniaxially or biaxially stretched stretched film, if desired. Further, after stretching, heat treatment or surface treatment such as corona discharge treatment can be performed.
- the thickness of the film is a property that directly affects the moisture permeability performance, and is generally 0.1 to 1,000 ⁇ m. A thin film thickness of ⁇ 100 ⁇ m, preferably 10-50 ⁇ m, more preferably 10-20 ⁇ m can be achieved. A film thinner than the above range is difficult to produce industrially without pinholes, and a film having a thickness exceeding the above range has insufficient moisture permeability.
- the polyester elastomer resin composition of the present invention can be used by laminating it with a substrate made of a fibrous substance or other film.
- the laminate includes, for example, a two-layer laminate of a film and a substrate comprising a fibrous substance, a substrate comprising a film/a substrate comprising a fibrous substance/film, or a substrate comprising a fibrous substance/a film/a substrate comprising a fibrous substance. Mention may be made of three-layer laminates such as timber, as well as laminates with more layers.
- the thickness of the laminate is variously selected depending on the desired moisture permeability and water absorbency and the properties of the base material made of fibrous material.
- the method for producing the laminate is not particularly limited, but for example, a polyester elastomer resin composition can be formed into a film by a melt extrusion method, and the resulting film and a substrate made of a fibrous substance can be laminated by thermal bonding. By thermally adhering the film and the fibrous material to the base material, no adhesive is required, and an excellent laminate can be produced.
- the laminate can also be produced by extrusion-laminating a film made of a polyester elastomer resin composition on a base material made of a fibrous substance to integrally laminate and mold. Extrusion lamination can simplify the molding process and reduce costs.
- the laminate of the polyester elastomer resin composition thus obtained is very flexible, exhibits stable moisture permeability against temperature changes at low temperatures, and has low water absorption.
- the moisture permeability of the composition measured by the JIS-L-1099B-1 method is 18,000 g/m 2 ⁇ day or more, preferably 20,000 g/m 2 ⁇ day or more
- the water absorption of the composition measured after immersion in water at 23° C. for 24 hours is 10-35% by weight. Because of this low water absorption, there is little change in physical properties due to water absorption. substrates, surgical gloves, etc.), sanitary applications (base materials for tapes for fixing paper diapers, tape substrates for fixing napkins), sports clothing applications, construction material applications, and the like. In particular, because of its excellent weather resistance, it can be used outdoors or in places exposed to light, so it can be suitably used as a building material.
- a film having a thickness of 18 ⁇ m was obtained from the polyester elastomer resin composition by extrusion molding. Specifically, the pellets of the polyester elastomer resin composition obtained in each example and comparative example were extruded by a 30 mm ⁇ single-screw extruder (manufactured by Plagiken Co., Ltd.) equipped with a T-die having a width of 200 mm and a slit gap of 0.5 mm. ) to prepare a film having a thickness of 18 ⁇ m. The resin temperature for extrusion molding was set to a temperature 20° C. higher than the crystalline melting point of each polyester elastomer. Using this film, the moisture permeability was measured according to the potassium acetate method described in JIS-L-1099B-1. The display was converted to 24 hours.
- Abrasion resistance Evaluation was made with reference to the method described in JIS-L-0849. Specifically, a test piece having a width of 15 cm and a length of 30 cm was cut out from the film obtained in the same manner as in (5) above. This test piece was mounted in parallel on a test piece table of a friction tester type 2 so that the moisture-permeable and waterproof membrane side was positioned on the upper surface, and the four sides were fixed with packing tape. A cotton cloth (No. 3 cotton cloth specified in JIS-L-0803) was attached to the tip of the friction element, and the film was repeatedly worn 500 times with a force of 1.96N. Abrasion resistance was visually evaluated based on the following criteria. ⁇ : Wear damage is hardly conspicuous. ⁇ : Wear damage is observed, but no large and conspicuous damage is observed. x: Abrasion damage is large, and damage to the extent that a hole is formed in the film is observed.
- Poly(ethylene oxide) glycol PEG Poly(propylene oxide) glycol: PPG Poly(alkylene oxide) block copolymer containing poly(ethylene oxide) glycol and poly(propylene oxide) glycol as constituent components: PEG-PPG copolymer [polyester elastomer] (Polyester elastomer A-1) As a hard segment, dimethyl terephthalate 511.5 g, trimellitic anhydride 2.9 g, 1,4-butanediol 543.9 g, as a soft segment, PEG-PPG copolymer (Adecapluronic (registered trademark) L-44, ( Co., Ltd.
- TBT tetrabutyl titanate
- ADEKA STAB A-330 antioxidant
- polyester elastomer A-1 The reduced viscosity of this polyester elastomer A-1 was 1.85.
- polyester elastomer A-2 As a hard segment, dimethyl terephthalate 322.0 g, trimellitic anhydride 1.8 g, 1,4-butanediol 308.1 g, as a soft segment, PEG-PPG copolymer (adecapluronic (registered trademark) L-64, ( Co., Ltd.
- a polyester elastomer A-2 was obtained in the same manner as in the polymerization. The reduced viscosity of this polyester elastomer A-2 was 2.11.
- polyester elastomer A-3 As hard segments, dimethyl terephthalate 349.08 g, trimellitic anhydride 1.9 g, 1,4-butanediol 338.2 g, as soft segments, PEG-PPG copolymer (adecapluronic (registered trademark) L-64, ( Co., Ltd.
- Polyethylene elastomer A-4 As a hard segment, 420.2 g of dimethyl terephthalate, 2.3 g of trimellitic anhydride, 421.9 g of 1,4-butanediol, and as a soft segment, a PEG-PPG copolymer (adecapluronic (registered trademark) L-44, ( Co., Ltd.
- polyester elastomer A-5 As a hard segment, dimethyl terephthalate 390.2 g, trimellitic anhydride 2.2 g, 1,4-butanediol 384.9 g, as a soft segment, PEG-PPG copolymer (Adecapluronic (registered trademark) L-44, ( Co., Ltd.
- polyester elastomer A-6 As a hard segment, dimethyl terephthalate 512.6 g, trimellitic anhydride 2.9 g, 1,4-butanediol 546.2 g, as a soft segment, PEG-PPG copolymer (Adecapluronic (registered trademark) L-44, ( Co., Ltd.
- a polyester elastomer A-6 was obtained in the same manner as in the polymerization. The reduced viscosity of this polyester elastomer A-6 was 1.91.
- polyester elastomer A-7 As a hard segment, dimethyl terephthalate 484.6 g, trimellitic anhydride 2.7 g, 1,4-butanediol 515.3 g, as a soft segment, PEG-PPG copolymer (adecapluronic (registered trademark) L-64, ( Co., Ltd.
- a polyester elastomer A-8 was obtained in the same manner as in
- polyester elastomer A-11 As hard segments, dimethyl terephthalate 731.9 g, trimellitic anhydride 4.1 g, 1,4-butanediol 830.0 g, as soft segments, PEG (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., number average molecular weight 2000) 278 .6 g, PPG (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., number average molecular weight 1000) 46.4 g, tetrabutyl titanate (TBT) 1.20 g as a catalyst, and a hindered phenolic antioxidant ( ADEKA STAB A-330 (manufactured by ADEKA Co., Ltd.) (4.4 g) was charged into a 5 L autoclave, and polyester elastomer A-11 was obtained in the same manner as polyester elastomer A-1. The reduced viscosity of this polyester elastomer A-11 was 1.08.
- DBT tetrabutyl titanate
- polyester elastomer A-12 is a comparative polyester elastomer containing no trimellitic anhydride. The reduced viscosity of this polyester elastomer A-12 was 0.92.
- Crosslinking agent (Crosslinking agent B-1) Styrene/glycidyl acrylate copolymer (ARUFON UG-4050, manufactured by Toagosei Co., Ltd., Mw: 8500, epoxy value 670 equivalents/1 ⁇ 10 6 g) (Crosslinking agent B-2) Polyethylene glycol diglycidyl ether (Denacol EX-850, manufactured by Nagase ChemteX Corporation)
- Examples 1-12, Comparative Examples 1-4 The polyester elastomer and cross-linking agent shown in Table 1 and the following additives are blended with 100 parts by mass of the polyester elastomer, respectively, and pelletized using a twin-screw extruder (PCM 30 mm ⁇ , manufactured by Ikegai Iron Works Co., Ltd.). A polyester elastomer resin composition was obtained and evaluated for its performance. Table 1 shows the evaluation results. In addition, the numerical value which shows the compounding ratio of a polyester elastomer and a crosslinking agent in Table 1 means a mass part.
- Comparative Example 3 since the polyester elastomer (A-12) containing no trimellitic anhydride was used as a constituent component, the melt tension was too low and the thin film moldability was poor. In addition, it is slightly inferior in moisture permeability and flexibility. Comparative Example 4 uses the same polyester elastomer (A-1) as in Example 1, but the blending amount of the cross-linking agent is too large. Also, the wear resistance is slightly inferior.
- the polyester elastomer resin composition of the present invention is excellent in thin film formability, moisture permeability and flexibility, and is also excellent in water pressure resistance, abrasion resistance, and low water absorption. of clothing intermediates can be stably produced.
- the polyester elastomer resin composition of the present invention can be suitably used as an intermediate material for clothing that is extremely comfortable during exercise or work in which the amount of perspiration increases rapidly. Therefore, the present invention is extremely useful in this technical field.
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Abstract
Description
(1)芳香族ジカルボン酸と脂肪族及び/又は脂環族ジオールとを構成成分とするポリエステルからなるハードセグメントと、脂肪族ポリエーテル、脂肪族ポリエステル、及び脂肪族ポリカーボネートからなる群から選ばれる少なくとも1種のソフトセグメントが結合した熱可塑性ポリエステルエラストマーを含有するポリエステルエラストマー樹脂組成物であって、
前記熱可塑性ポリエステルエラストマー中の前記ソフトセグメントの含有量は、24~70質量%であり、
前記ソフトセグメントは、ポリ(エチレンオキシド)グリコール、及びポリ(エチレンオキシド)グリコールとポリ(プロピレンオキシド)グリコールを構成成分として含むポリ(アルキレンオキシド)ブロック共重合体からなる群から選ばれる少なくとも1種のポリ(アルキレンオキシド)を含有し、
前記ソフトセグメント中のポリ(エチレンオキシド)グリコールの含有量は、全組成物中15~45質量%であり、
組成物の溶融張力が2.5~20cNであることを特徴とするポリエステルエラストマー樹脂組成物。
(2)前記ソフトセグメントが、ポリ(エチレンオキシド)グリコール、及びポリ(エチレンオキシド)グリコールとポリ(プロピレンオキシド)グリコールを構成成分として含むポリ(アルキレンオキシド)ブロック共重合体であることを特徴とする(1)に記載のポリエステルエラストマー樹脂組成物。
(3)前記ソフトセグメントが、ポリ(エチレンオキシド)グリコールとポリ(プロピレンオキシド)グリコールを構成成分として含むポリ(アルキレンオキシド)ブロック共重合体であることを特徴とする(1)に記載のポリエステルエラストマー樹脂組成物。
(4)前記ソフトセグメントが、数平均分子量1800以上のポリ(エチレンオキシド)グリコールを30~45質量%の割合で含有することを特徴とする(1)又は(2)に記載のポリエステルエラストマー樹脂組成物。
(5)23℃で24時間水中に浸漬した後に測定した前記組成物の吸水率が、10~35質量%であることを特徴とする(1)~(4)のいずれかに記載のポリエステルエラストマー樹脂組成物。
(6)JIS-L-1099B-1法により測定した前記組成物の透湿度が、20,000g/m2・日以上であることを特徴とする(1)~(5)のいずれかに記載のポリエステルエラストマー樹脂組成物。
(7)(1)~(6)のいずれかに記載のポリエステルエラストマー樹脂組成物からなるフィルム。
ポリエステルエラストマーのサンプル0.05gを25mlの混合溶媒(フェノール/テトラクロロエタン=60/40、容量比)に溶解した。得られた溶液の還元粘度を、オストワルド粘度計を用いて30℃で測定した。
ポリエステルエラストマーのサンプル10mgをアルミ製のパンに入れ、蓋で密封した。セイコー電子工業(株)製DSC(示差走査熱量計)SSC/5200にて室温から20℃/分で昇温し、ピーク温度を測定して、融点とした。
(株)東洋精機製作所製キャピログラフ1Dを用いて、キャピラリー:直径2.0mm、長さ20mm、シリンダー径:9.55mm、温度:融点+10℃、シリンダー押出速度:20mm/分で、引き取り速度が10m/分になるまで、引取加速度40m/min2でポリエステルエラストマー樹脂組成物の溶融張力を測定した。
ポリエステルエラストマー樹脂組成物から、射出成形機(東芝機械(株)製IS80)により、100×100×2mmのテストピースを作製した。射出成形の樹脂温度は各ポリエステルエラストマーの結晶融点より20℃高い温度にした。このテストピースを100℃、10torr以下で24時間乾燥させた後、23℃で水中に24時間浸漬した。浸漬前後のテストピースの質量から、以下の式に従って吸水率を計算した。
吸水率=(浸漬後の質量-浸漬前の質量)/浸漬前の質量×100(%)
ポリエステルエラストマー樹脂組成物から、押出成形によって厚さ18μmのフィルムを得た。具体的には、各実施例、比較例で得られたポリエステルエラストマー樹脂組成物のペレットを、幅200mm、スリット間隙0.5mmのTダイを取りつけた30mmφ単軸押出し機((株)プラ技研製)を用いて溶融成形し、厚さ18μmのフィルムを作製した。押出成形の樹脂温度は各ポリエステルエラストマーの結晶融点より20℃高い温度にした。このフィルムを用いてJIS-L-1099B-1法に記載の酢酸カリウム法に準じて透湿度を測定した。表示は24時間換算とした。
上記の(5)と同様にして得たフィルムを用いて、JIS-L-1092-B法に準じて耐水圧を測定した。
JIS-L-0849に記載された方法を参考にして評価した。具体的には、上記の(5)と同様にして得たフィルムから、幅15cm、長さ30cmの大きさの試験片を切り出した。この試験片を、摩擦試験機2型の試験片台上に、透湿防水膜の側が上面に位置されるように平行に取り付け、4辺をガムテープで固定した。そして、摩擦子先端に綿布(JIS-L-0803に規定の3号綿布)を装着し、1.96Nの力で膜を500回繰り返し摩耗した。耐摩耗性は、下記の基準に基づいて目視評価した。
○:摩耗損傷がほとんど目立たない。
△:摩耗損傷しているものの、大きく目立つ損傷は認められない。
×:摩耗損傷が大きく、膜に穴があくほどの損傷が認められる。
上記の(5)と同様にして得たフィルムを素手で触り、その感触によって下記の基準に基づいて評価した。
○・・・良好。
△・・・やや硬い。
×・・・硬い。
ポリエステルエラストマー樹脂組成物から、上記の(5)と同様にして、押出成形によって厚さ18μmのフィルムを連続生産した。このフィルムの状態を連続して2時間の生産分、目視により観察し、下記の基準に基づいて評価した。
○:フィルム切れも±2μmの厚みムラも生じていない。
△:フィルム切れ又は±2μm以上の厚みムラが一部生じている。
×:フィルム切れ又は±2μm以上の厚みムラが多発している。
なお、以下の物質は、略号を用いて表記した。
ポリ(エチレンオキシド)グリコール:PEG
ポリ(プロピレンオキシド)グリコール:PPG
ポリ(エチレンオキシド)グリコールとポリ(プロピレンオキシド)グリコールを構成成分として含むポリ(アルキレンオキシド)ブロック共重合体:PEG-PPG共重合体
[ポリエステルエラストマー]
(ポリエステルエラストマーA-1)
ハードセグメントとして、ジメチルテレフタレート511.5g、無水トリメリット酸2.9g、1,4-ブタンジオール543.9g、ソフトセグメントとして、PEG-PPG共重合体(アデカプルロニック(登録商標)L-44、(株)ADEKA製、数平均分子量2200、PEG/PPG=45/55(質量比))428.4g、PEG(富士フイルム和光純薬(株)製、数平均分子量2000)259.6g、触媒として、テトラブチルチタネート(TBT)1.20g、酸化防止剤として、ヒンダードフェノール系酸化防止剤(アデカスタブA-330、(株)ADEKA製)4.4gを5Lのオートクレーブに仕込み、室温から200℃まで3時間かけて昇温し、エステル交換反応を行った。次いで、重合缶内を徐々に減圧すると共に更に昇温し、40分間かけて245℃、1torr以下にして初期縮合反応を行った。さらに245℃、1torr以下の状態で2時間重合反応を行った。反応終了後、ポリマーをペレット状に取り出し、ポリエステルエラストマーA―1を得た。このポリエステルエラストマーA-1の還元粘度は1.85であった。
ハードセグメントとして、ジメチルテレフタレート322.0g、無水トリメリット酸1.8g、1,4-ブタンジオール308.1g、ソフトセグメントとして、PEG-PPG共重合体(アデカプルロニック(登録商標)L-64、(株)ADEKA製、数平均分子量2900、PEG/PPG=40/60(質量比))592.6g、PEG(富士フイルム和光純薬(株)製、数平均分子量2000)367.7g、触媒として、テトラブチルチタネート(TBT)1.20g、酸化防止剤として、ヒンダードフェノール系酸化防止剤(アデカスタブA-330、(株)ADEKA製)4.4gを5Lのオートクレーブに仕込み、ポリエステルエラストマーA-1の重合と同様にして、ポリエステルエラストマーA―2を得た。このポリエステルエラストマーA-2の還元粘度は2.11であった。
ハードセグメントとして、ジメチルテレフタレート349.08g、無水トリメリット酸1.9g、1,4-ブタンジオール338.2g、ソフトセグメントとして、PEG-PPG共重合体(アデカプルロニック(登録商標)L-64、(株)ADEKA製、数平均分子量2900、PEG/PPG=40/60(質量比))513.9g、PEG(富士フイルム和光純薬(株)製、数平均分子量2000)422.9g、触媒として、テトラブチルチタネート(TBT)1.20g、酸化防止剤として、ヒンダードフェノール系酸化防止剤(アデカスタブA-330、(株)ADEKA製)4.4gを5Lのオートクレーブに仕込み、ポリエステルエラストマーA-1の重合と同様にして、ポリエステルエラストマーA―3を得た。このポリエステルエラストマーA-3の還元粘度は2.06であった。
ハードセグメントとして、ジメチルテレフタレート420.2g、無水トリメリット酸2.3g、1,4-ブタンジオール421.9g、ソフトセグメントとして、PEG-PPG共重合体(アデカプルロニック(登録商標)L-44、(株)ADEKA製、数平均分子量2200、PEG/PPG=45/55(質量比))586.5g、PEG(富士フイルム和光純薬(株)製、数平均分子量2000)159.9g、PEG(富士フイルム和光純薬(株)製、数平均分子量1000)53.3g、触媒として、テトラブチルチタネート(TBT)1.20g、酸化防止剤として、ヒンダードフェノール系酸化防止剤(アデカスタブA-330、(株)ADEKA製)4.4gを5Lのオートクレーブに仕込み、ポリエステルエラストマーA-1の重合と同様にして、ポリエステルエラストマーA―4を得た。このポリエステルエラストマーA-4の還元粘度は2.03であった。
ハードセグメントとして、ジメチルテレフタレート390.2g、無水トリメリット酸2.2g、1,4-ブタンジオール384.9g、ソフトセグメントとして、PEG-PPG共重合体(アデカプルロニック(登録商標)L-44、(株)ADEKA製、数平均分子量2200、PEG/PPG=45/55(質量比))588.2g、PEG(富士フイルム和光純薬(株)製、数平均分子量2000)282.2g、PEG(富士フイルム和光純薬(株)製、数平均分子量1000)53.3g、触媒として、テトラブチルチタネート(TBT)1.20g、酸化防止剤として、ヒンダードフェノール系酸化防止剤(アデカスタブA-330、(株)ADEKA製)4.4gを5Lのオートクレーブに仕込み、ポリエステルエラストマーA-1の重合と同様にして、ポリエステルエラストマーA―5を得た。このポリエステルエラストマーA-5の還元粘度は1.98であった。
ハードセグメントとして、ジメチルテレフタレート512.6g、無水トリメリット酸2.9g、1,4-ブタンジオール546.2g、ソフトセグメントとして、PEG-PPG共重合体(アデカプルロニック(登録商標)L-44、(株)ADEKA製、数平均分子量2200、PEG/PPG=45/55(質量比))479.3g、PEG(富士フイルム和光純薬(株)製、数平均分子量2000)201.6g、触媒として、テトラブチルチタネート(TBT)1.20g、酸化防止剤として、ヒンダードフェノール系酸化防止剤(アデカスタブA-330、(株)ADEKA製)4.4gを5Lのオートクレーブに仕込み、ポリエステルエラストマーA-1の重合と同様にして、ポリエステルエラストマーA―6を得た。このポリエステルエラストマーA-6の還元粘度は1.91であった。
ハードセグメントとして、ジメチルテレフタレート484.6g、無水トリメリット酸2.7g、1,4-ブタンジオール515.3g、ソフトセグメントとして、PEG-PPG共重合体(アデカプルロニック(登録商標)L-64、(株)ADEKA製、数平均分子量2900、PEG/PPG=40/60(質量比))472.7g、PEG(富士フイルム和光純薬(株)製、数平均分子量2000)202.9g、PPG(富士フイルム和光純薬(株)製、数平均分子量1000)43.0g、触媒として、テトラブチルチタネート(TBT)1.20g、酸化防止剤として、ヒンダードフェノール系酸化防止剤(アデカスタブA-330、(株)ADEKA製)4.4gを5Lのオートクレーブに仕込み、ポリエステルエラストマーA-1の重合と同様にして、ポリエステルエラストマーA-7を得た。このポリエステルエラストマーA-7の還元粘度は1.92であった。
ハードセグメントとして、ジメチルテレフタレート684.7g、無水トリメリット酸3.8g、1,4-ブタンジオール776.5g、ソフトセグメントとして、PEG-PPG共重合体(アデカプルロニック(登録商標)L-64、(株)ADEKA製、数平均分子量2900、PEG/PPG=40/60(質量比))126.0g、PEG(富士フイルム和光純薬(株)製、数平均分子量2000)260.6g、触媒として、テトラブチルチタネート(TBT)1.20g、酸化防止剤として、ヒンダードフェノール系酸化防止剤(アデカスタブA-330、(株)ADEKA製)4.4gを5Lのオートクレーブに仕込み、ポリエステルエラストマーA-1の重合と同様にして、ポリエステルエラストマーA-8を得た。このポリエステルエラストマーA-8の還元粘度は1.21であった。
ハードセグメントとして、ジメチルテレフタレート400.4g、無水トリメリット酸2.2g、1,4-ブタンジオール404.4g、ソフトセグメントとして、PEG-PPG共重合体(アデカプルロニック(登録商標)L-44、(株)ADEKA製、数平均分子量2200、PEG/PPG=45/55(質量比))642.7g、PEG-PPG共重合体(アデカプルロニック(登録商標)L-64、(株)ADEKA製、数平均分子量2900、PEG/PPG=40/60(質量比))221.1g、触媒として、テトラブチルチタネート(TBT)1.20g、酸化防止剤として、ヒンダードフェノール系酸化防止剤(アデカスタブA-330、(株)ADEKA製)4.4gを5Lのオートクレーブに仕込み、ポリエステルエラストマーA-1の重合と同様にして、ポリエステルエラストマーA-9を得た。このポリエステルエラストマーA-9の還元粘度は2.09であった。
ハードセグメントとして、ジメチルテレフタレート252.9g、無水トリメリット酸1.4g、1,4-ブタンジオール215.1g、ソフトセグメントとして、PEG-PPG共重合体(アデカプルロニック(登録商標)L-64、(株)ADEKA製、数平均分子量2900、PEG/PPG=40/60(質量比))744.7g、PEG(富士フイルム和光純薬(株)製、数平均分子量2000)353.0g、PPG(富士フイルム和光純薬(株)製、数平均分子量1000)16.0g、触媒として、テトラブチルチタネート(TBT)1.20g、酸化防止剤として、ヒンダードフェノール系酸化防止剤(アデカスタブA-330、(株)ADEKA製)4.4gを5Lのオートクレーブに仕込み、ポリエステルエラストマーA-1の重合と同様にして、ポリエステルエラストマーA-10を得た。このポリエステルエラストマーA-10の還元粘度は2.20であった。
ハードセグメントとして、ジメチルテレフタレート731.9g、無水トリメリット酸4.1g、1,4-ブタンジオール830.0g、ソフトセグメントとして、PEG(富士フイルム和光純薬(株)製、数平均分子量2000)278.6g、PPG(富士フイルム和光純薬(株)製、数平均分子量1000)46.4g、触媒として、テトラブチルチタネート(TBT)1.20g、酸化防止剤として、ヒンダードフェノール系酸化防止剤(アデカスタブA-330、(株)ADEKA製)4.4gを5Lのオートクレーブに仕込み、ポリエステルエラストマーA-1の重合と同様にして、ポリエステルエラストマーA―11を得た。このポリエステルエラストマーA-11の還元粘度は1.08であった。
ハードセグメントとして、ジメチルテレフタレート695.5g、1,4-ブタンジオール784.8g、ソフトセグメントとして、PEG-PPG共重合体(アデカプルロニック(登録商標)L-64、(株)ADEKA製、数平均分子量2900、PEG/PPG=40/60(質量比))127.4g、PEG(富士フイルム和光純薬(株)製、数平均分子量2000)263.4g、触媒として、テトラブチルチタネート(TBT)1.20g、酸化防止剤として、ヒンダードフェノール系酸化防止剤(アデカスタブA-330、(株)ADEKA製)4.4gを5Lのオートクレーブに仕込み、ポリエステルエラストマーA-1の重合と同様にして、ポリエステルエラストマーA―8を得た。このポリエステルエラストマーA-12は、無水トリメリット酸を配合していない、比較例用のポリエステルエラストマーである。このポリエステルエラストマーA-12の還元粘度は0.92であった。
(架橋剤B-1)
スチレン/グリシジルアクリレート共重合体(ARUFON UG-4050、東亜合成(株)製、Mw:8500、エポキシ価670当量/1×106g)
(架橋剤B-2)
ポリエチレングリコールジグリシジルエーテル(デナコール EX-850、ナガセケムテックス(株)製)
表1に記載のポリエステルエラストマーおよび架橋剤と、下記添加剤をポリエステルエラストマー100質量部に対して、それぞれ配合し、二軸押出機(PCM30mmφ、池貝鉄工(株)製)を用いて、ペレット状のポリエステルエラストマー樹脂組成物を得て、その性能を評価した。評価結果を表1に示す。なお、表1中のポリエステルエラストマーと架橋剤の配合割合を示す数値は、質量部を意味する。
[添加剤]
・ペンタエリスリトールテトラキス[3-(3,5-ジ-tert-ブチル-4-ヒドロキシフェニル)プロピオネート]:0.3質量部
・ジラウリルチオプロピオネート:0.3質量部
Claims (7)
- 芳香族ジカルボン酸と脂肪族及び/又は脂環族ジオールとを構成成分とするポリエステルからなるハードセグメントと、脂肪族ポリエーテル、脂肪族ポリエステル、及び脂肪族ポリカーボネートからなる群から選ばれる少なくとも1種のソフトセグメントが結合した熱可塑性ポリエステルエラストマーを含有するポリエステルエラストマー樹脂組成物であって、
前記熱可塑性ポリエステルエラストマー中の前記ソフトセグメントの含有量は、24~70質量%であり、
前記ソフトセグメントは、ポリ(エチレンオキシド)グリコール、及びポリ(エチレンオキシド)グリコールとポリ(プロピレンオキシド)グリコールを構成成分として含むポリ(アルキレンオキシド)ブロック共重合体からなる群から選ばれる少なくとも1種のポリ(アルキレンオキシド)を含有し、
前記ソフトセグメント中のポリ(エチレンオキシド)グリコールの含有量は、全組成物中15~45質量%であり、
組成物の溶融張力が2.5~20cNであることを特徴とするポリエステルエラストマー樹脂組成物。 - 前記ソフトセグメントが、ポリ(エチレンオキシド)グリコール、及びポリ(エチレンオキシド)グリコールとポリ(プロピレンオキシド)グリコールを構成成分として含むポリ(アルキレンオキシド)ブロック共重合体であることを特徴とする請求項1に記載のポリエステルエラストマー樹脂組成物。
- 前記ソフトセグメントが、ポリ(エチレンオキシド)グリコールとポリ(プロピレンオキシド)グリコールを構成成分として含むポリ(アルキレンオキシド)ブロック共重合体であることを特徴とする請求項1に記載のポリエステルエラストマー樹脂組成物。
- 前記ソフトセグメントが、数平均分子量1800以上のポリ(エチレンオキシド)グリコールを30~45質量%の割合で含有することを特徴とする請求項1又は2に記載のポリエステルエラストマー樹脂組成物。
- 23℃で24時間水中に浸漬した後に測定した前記組成物の吸水率が、10~35質量%であることを特徴とする請求項1~4のいずれかに記載のポリエステルエラストマー樹脂組成物。
- JIS-L-1099B-1法により測定した前記組成物の透湿度が、20,000g/m2・日以上であることを特徴とする請求項1~5のいずれかに記載のポリエステルエラストマー樹脂組成物。
- 請求項1~6のいずれかに記載のポリエステルエラストマー樹脂組成物からなるフィルム。
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JP2010265407A (ja) * | 2009-05-15 | 2010-11-25 | Unitika Ltd | 透湿性ポリエステル系エラストマーフィルム |
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JP2010265407A (ja) * | 2009-05-15 | 2010-11-25 | Unitika Ltd | 透湿性ポリエステル系エラストマーフィルム |
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