JP7178754B1 - Resin composition and molded article - Google Patents
Resin composition and molded article Download PDFInfo
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- JP7178754B1 JP7178754B1 JP2022120485A JP2022120485A JP7178754B1 JP 7178754 B1 JP7178754 B1 JP 7178754B1 JP 2022120485 A JP2022120485 A JP 2022120485A JP 2022120485 A JP2022120485 A JP 2022120485A JP 7178754 B1 JP7178754 B1 JP 7178754B1
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- resin composition
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- resin
- biodegradable resin
- biodegradable
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- 239000011342 resin composition Substances 0.000 title claims abstract description 84
- 229920006167 biodegradable resin Polymers 0.000 claims abstract description 78
- 239000000843 powder Substances 0.000 claims abstract description 64
- 239000000126 substance Substances 0.000 claims abstract description 39
- 229910021538 borax Inorganic materials 0.000 claims abstract description 37
- 239000004328 sodium tetraborate Substances 0.000 claims abstract description 37
- 235000010339 sodium tetraborate Nutrition 0.000 claims abstract description 37
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 23
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 21
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 50
- -1 polybutylene succinate Polymers 0.000 claims description 30
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 25
- 239000002245 particle Substances 0.000 claims description 11
- QZCLKYGREBVARF-UHFFFAOYSA-N Acetyl tributyl citrate Chemical compound CCCCOC(=O)CC(C(=O)OCCCC)(OC(C)=O)CC(=O)OCCCC QZCLKYGREBVARF-UHFFFAOYSA-N 0.000 claims description 10
- 239000004626 polylactic acid Substances 0.000 claims description 9
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 8
- 239000004629 polybutylene adipate terephthalate Substances 0.000 claims description 7
- 229920002961 polybutylene succinate Polymers 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- 229920001020 poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) Polymers 0.000 claims description 5
- 239000004631 polybutylene succinate Substances 0.000 claims description 5
- 229920009537 polybutylene succinate adipate Polymers 0.000 claims description 5
- 239000004630 polybutylene succinate adipate Substances 0.000 claims description 5
- 229920000954 Polyglycolide Polymers 0.000 claims description 4
- 229920000331 Polyhydroxybutyrate Polymers 0.000 claims description 4
- 239000005015 poly(hydroxybutyrate) Substances 0.000 claims description 4
- 229920002463 poly(p-dioxanone) polymer Polymers 0.000 claims description 4
- 229920001610 polycaprolactone Polymers 0.000 claims description 4
- 239000004632 polycaprolactone Substances 0.000 claims description 4
- 239000000622 polydioxanone Substances 0.000 claims description 4
- 239000004633 polyglycolic acid Substances 0.000 claims description 4
- 238000000465 moulding Methods 0.000 description 10
- 239000008188 pellet Substances 0.000 description 10
- 229920005989 resin Polymers 0.000 description 9
- 239000011347 resin Substances 0.000 description 9
- 238000011156 evaluation Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 235000012438 extruded product Nutrition 0.000 description 6
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 6
- 239000012756 surface treatment agent Substances 0.000 description 6
- 230000007062 hydrolysis Effects 0.000 description 5
- 238000006460 hydrolysis reaction Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229920003232 aliphatic polyester Polymers 0.000 description 4
- 239000004645 polyester resin Substances 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 239000004310 lactic acid Substances 0.000 description 3
- 235000014655 lactic acid Nutrition 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229920001634 Copolyester Polymers 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 235000021317 phosphate Nutrition 0.000 description 2
- 238000012643 polycondensation polymerization Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229920002101 Chitin Polymers 0.000 description 1
- 229920001661 Chitosan Polymers 0.000 description 1
- 102000008186 Collagen Human genes 0.000 description 1
- 108010035532 Collagen Proteins 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 108010068370 Glutens Proteins 0.000 description 1
- 108010076876 Keratins Proteins 0.000 description 1
- 102000011782 Keratins Human genes 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 108010073771 Soybean Proteins Proteins 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 229920002494 Zein Polymers 0.000 description 1
- 108010055615 Zein Proteins 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 description 1
- 235000011132 calcium sulphate Nutrition 0.000 description 1
- 235000010261 calcium sulphite Nutrition 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 229920001436 collagen Polymers 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 235000021312 gluten Nutrition 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229920001477 hydrophilic polymer Polymers 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 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
- 239000006028 limestone Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 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
- 229960002261 magnesium phosphate Drugs 0.000 description 1
- 229910000157 magnesium phosphate Inorganic materials 0.000 description 1
- 235000010994 magnesium phosphates Nutrition 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 238000010299 mechanically pulverizing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000151 polyglycol Polymers 0.000 description 1
- 239000010695 polyglycol Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 235000019710 soybean protein Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical compound [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000005019 zein Substances 0.000 description 1
- 229940093612 zein Drugs 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/11—Esters; Ether-esters of acyclic polycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
- C08L29/02—Homopolymers or copolymers of unsaturated alcohols
- C08L29/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- 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
-
- 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
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
- C08L101/16—Compositions of unspecified macromolecular compounds the macromolecular compounds being biodegradable
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
【課題】本発明の課題は、生分解性樹脂及び無機物質粉末を含み、かつ、良好な機械的特性及び生分解性を有する成形品を得るための技術の提供である。【解決手段】本発明は、樹脂組成物であって、前記樹脂組成物が、生分解性樹脂と、無機物質粉末と、ホウ砂と、を含み、前記生分解性樹脂と、前記無機物質粉末との質量比が、１０：９０～７０：３０であり、前記生分解性樹脂が、ポリビニルアルコールを含み、前記無機物質粉末は、ホウ砂とは異なる物質であり、前記ホウ砂の含有量が、前記樹脂組成物に対して、１．０質量％以上２０．０質量％以下である、樹脂組成物を提供する。【選択図】なしAn object of the present invention is to provide a technique for obtaining a molded article containing biodegradable resin and inorganic powder and having good mechanical properties and biodegradability. The present invention provides a resin composition comprising a biodegradable resin, an inorganic powder, and borax, wherein the biodegradable resin and the inorganic powder is 10:90 to 70:30, the biodegradable resin contains polyvinyl alcohol, the inorganic substance powder is a substance different from borax, and the borax content is and 1.0% by mass or more and 20.0% by mass or less of the resin composition. [Selection figure] None
Description
本発明は、樹脂組成物及び成形品に関する。 The present invention relates to resin compositions and molded articles.
生分解性樹脂は、微生物の作用や加水分解により、自然界に元来存在する物質へ分解されることから、環境負荷が少ない樹脂として注目されている。 Biodegradable resins are attracting attention as environmentally friendly resins because they decompose into substances that originally exist in nature by the action of microorganisms or hydrolysis.
生分解性樹脂に対し、環境負荷の少なさを損なわずに良好な諸特性等を付与するため、無機物質粉末（例えば、炭酸カルシウム粉末等）を配合することが提案されている（例えば、特許文献１、２等）。 It has been proposed to add inorganic powder (such as calcium carbonate powder) to biodegradable resins in order to impart good properties without impairing the low environmental load (for example, patent References 1, 2, etc.).
ここで、生分解性樹脂は、耐加水分解性が低いため、成形時に加水分解され易く、生分解性樹脂から得られる樹脂成形品は機械的特性に劣る傾向にある。
本発明者は、このような傾向が、生分解性樹脂及び無機物質粉末を含む樹脂組成物の成形において特に生じ易い可能性があることを見出した。
Since biodegradable resins have low hydrolysis resistance, they are easily hydrolyzed during molding, and resin molded articles obtained from biodegradable resins tend to be inferior in mechanical properties.
The inventors of the present invention have found that such a tendency may occur particularly easily in the molding of a resin composition containing a biodegradable resin and an inorganic substance powder.
しかし、生分解性樹脂の生分解性を損なわずに、生分解性樹脂及び無機物質粉末を含む樹脂組成物から、良好な機械的特性を備える成形品を作製出来る技術は充分確立されていない。 However, there is no well-established technique for producing a molded article having good mechanical properties from a resin composition containing a biodegradable resin and an inorganic powder without impairing the biodegradability of the biodegradable resin.
本発明は以上の実情に鑑みてなされたものであり、生分解性樹脂及び無機物質粉末を含み、かつ、良好な機械的特性及び生分解性を有する成形品を得るための技術の提供を目的とする。 The present invention has been made in view of the above circumstances, and aims to provide a technique for obtaining a molded article containing a biodegradable resin and an inorganic substance powder and having good mechanical properties and biodegradability. and
本発明者は、所定量のホウ砂を配合することで上記課題を解決出来る点を見出し、本発明を完成するに至った。より具体的には、本発明は以下を提供する。 The present inventors have found that the above problems can be solved by blending a predetermined amount of borax, and have completed the present invention. More specifically, the present invention provides:
（１） 樹脂組成物であって、
前記樹脂組成物が、生分解性樹脂と、無機物質粉末と、ホウ砂と、を含み、
前記生分解性樹脂と、前記無機物質粉末との質量比が、１０：９０～７０：３０であり、
前記生分解性樹脂が、ポリビニルアルコールを含み、
前記無機物質粉末は、ホウ砂とは異なる物質であり、
前記ホウ砂の含有量が、前記樹脂組成物に対して、１．０質量％以上２０．０質量％以下である、
樹脂組成物。
(1) A resin composition,
The resin composition contains a biodegradable resin, an inorganic substance powder, and borax,
The mass ratio of the biodegradable resin and the inorganic substance powder is 10:90 to 70:30,
The biodegradable resin contains polyvinyl alcohol,
The inorganic substance powder is a substance different from borax,
The content of the borax is 1.0% by mass or more and 20.0% by mass or less with respect to the resin composition.
Resin composition.
（２） 前記生分解性樹脂と、前記無機物質粉末との質量比が、３０：７０～７０：３０である、（１）に記載の樹脂組成物。 (2) The resin composition according to (1), wherein the biodegradable resin and the inorganic substance powder have a mass ratio of 30:70 to 70:30.
（３） 前記生分解性樹脂が、
ポリビニルアルコールからなる第１の生分解性樹脂と、
ポリ乳酸、ポリヒドロキシブチレート、ポリ（３－ヒドロキシブチレート－コ－３－ヒドロキシヘキサノエート）、ポリカプロラクトン、ポリブチレンサクシネート、ポリエチレンサクシネート、ポリリンゴ酸、ポリグリコール酸、ポリジオキサノン、ポリ（２－オキセタノン）、ポリブチレンアジペートテレフタレート、及びポリブチレンサクシネートアジペートからなる群から選択される１以上からなる第２の生分解性樹脂と、からなる、
（１）に記載の樹脂組成物。
(3) the biodegradable resin is
a first biodegradable resin made of polyvinyl alcohol;
Polylactic acid, polyhydroxybutyrate, poly(3-hydroxybutyrate-co-3-hydroxyhexanoate), polycaprolactone, polybutylene succinate, polyethylene succinate, polymalic acid, polyglycolic acid, polydioxanone, poly(2 -oxetanone), polybutylene adipate terephthalate, and a second biodegradable resin consisting of one or more selected from the group consisting of polybutylene adipate terephthalate and polybutylene succinate adipate,
The resin composition according to (1).
（４） 前記無機物質粉末が、重質炭酸カルシウム粉末である、（１）に記載の樹脂組成物。 (4) The resin composition according to (1), wherein the inorganic substance powder is ground calcium carbonate powder.
（５） 前記重質炭酸カルシウム粉末及びホウ砂のＪＩＳ Ｍ－８５１１に準じた空気透過法による平均粒子径が、それぞれ、０．７μｍ以上６．０μｍ以下である、（４）に記載の樹脂組成物。 (5) The resin composition according to (4), wherein the ground calcium carbonate powder and borax each have an average particle size of 0.7 μm or more and 6.0 μm or less by an air permeation method according to JIS M-8511. thing.
（６） 前記樹脂組成物が、アセチルクエン酸トリブチルを更に含み、
前記アセチルクエン酸トリブチルの含有量が、前記樹脂組成物に対して、５．０質量％以上２０．０質量％以下である、（１）に記載の樹脂組成物。
(6) the resin composition further comprises acetyl tributyl citrate;
The resin composition according to (1), wherein the content of the tributyl acetylcitrate is 5.0% by mass or more and 20.0% by mass or less relative to the resin composition.
（７） 前記ホウ砂の含有量が、前記樹脂組成物に対して、１．０質量％以上１０．０質量％以下である、（１）に記載の樹脂組成物。 (7) The resin composition according to (1), wherein the content of the borax is 1.0% by mass or more and 10.0% by mass or less with respect to the resin composition.
（８） 前記第１の生分解性樹脂と、前記第２の生分解性樹脂との質量比が、１０：９０～５０：５０である、（３）に記載の樹脂組成物。 (8) The resin composition according to (3), wherein the mass ratio of the first biodegradable resin and the second biodegradable resin is 10:90 to 50:50.
（９） （１）から（８）の何れか１項に記載の樹脂組成物からなる、成形品。 (9) A molded article made of the resin composition according to any one of (1) to (8).
（１０） 前記成形品が、押出成形シートである、（９）に記載の成形品。 (10) The molded article according to (9), wherein the molded article is an extruded sheet.
本発明によれば、生分解性樹脂及び無機物質粉末を含み、かつ、良好な機械的特性及び生分解性を有する成形品を得るための技術が提供される。 INDUSTRIAL APPLICABILITY According to the present invention, there is provided a technique for obtaining a molded article containing biodegradable resin and inorganic powder and having good mechanical properties and biodegradability.
以下、本発明の実施形態について説明するが、本発明はこれに限定されない。 Embodiments of the present invention will be described below, but the present invention is not limited thereto.
＜樹脂組成物＞
本発明の樹脂組成物は、以下の要件を全て満たす。
・ 樹脂組成物が、生分解性樹脂と、無機物質粉末と、ホウ砂と、を含む。
・ 生分解性樹脂と、無機物質粉末との質量比が、１０：９０～７０：３０である。
・ 生分解性樹脂が、ポリビニルアルコールを含む。
・ 無機物質粉末は、ホウ砂とは異なる物質である。
・ ホウ砂の含有量が、樹脂組成物に対して、１．０質量％以上２０．０質量％以下である。
<Resin composition>
The resin composition of the present invention satisfies all of the following requirements.
- The resin composition contains a biodegradable resin, an inorganic powder, and borax.
- The mass ratio of the biodegradable resin to the inorganic powder is 10:90 to 70:30.
- The biodegradable resin contains polyvinyl alcohol.
• Inorganic powder is a different substance than borax.
- The content of borax is 1.0% by mass or more and 20.0% by mass or less with respect to the resin composition.
本発明の樹脂組成物は、ポリビニルアルコールを含む生分解性樹脂と、無機物質粉末（ホウ砂とは異なる）と、を含む樹脂組成物において、所定量のホウ砂が配合される点に主要な技術的特徴がある。
上記構成を備える樹脂組成物によれば、生分解性樹脂の生分解性を損なわずに、良好な機械的特性を備える成形品を作製出来る。
The resin composition of the present invention is a resin composition containing a biodegradable resin containing polyvinyl alcohol and an inorganic substance powder (different from borax), in that a predetermined amount of borax is blended. It has technical characteristics.
According to the resin composition having the above structure, a molded article having good mechanical properties can be produced without impairing the biodegradability of the biodegradable resin.
ホウ砂は、無機物質粉末として分類される物質である。本発明者は、ホウ砂と、ホウ砂とは異なる無機物質粉末との併用によって、意外にも、生分解性樹脂含有成形品の機械的特性を高められることを見出した。その理由は定かではないが、ホウ砂の添加による水素結合による架橋ネットワークが寄与しているものと推察される。 Borax is a substance classified as an inorganic powder. The present inventors have surprisingly found that the combined use of borax and an inorganic powder different from borax can enhance the mechanical properties of biodegradable resin-containing moldings. Although the reason for this is not clear, it is presumed that a crosslinked network formed by hydrogen bonding due to the addition of borax contributes.
本発明において「機械的特性」とは、樹脂組成物から得られる成形品の引張強さを包含する。 In the present invention, "mechanical properties" include tensile strength of molded articles obtained from the resin composition.
樹脂組成物から得られる成形品の機械的特性は、実施例に示した方法で評価し得る。 The mechanical properties of molded articles obtained from the resin composition can be evaluated by the methods shown in Examples.
本発明において「生分解性」とは、成形品が生物（微生物等）の作用により分解する性質を包含する。 In the present invention, the term "biodegradability" includes the property that a molded product decomposes under the action of living organisms (microorganisms, etc.).
樹脂組成物から得られる成形品の生分解性は、実施例に示した方法で評価し得る。 The biodegradability of a molded article obtained from a resin composition can be evaluated by the method shown in Examples.
以下、本発明の樹脂組成物の詳細について説明する。 Details of the resin composition of the present invention are described below.
なお、以下、本発明において、「Ａは成分ａからなる」とは、「Ａ」が、「成分ａ」以外の成分を実質的に含まないこと、好ましくは「成分ａ」以外の成分を全く含まないことを包含する。
本発明において、「Ａが、成分ａ以外の成分を実質的に含まない」とは、「Ａ」中の「成分ａ」以外の成分の含有量が、好ましくは０．１質量％以下であること、より好ましくは０．０５質量％以下であることを包含する。
Hereinafter, in the present invention, "A consists of component a" means that "A" does not substantially contain components other than "component a", preferably contains no components other than "component a". Inclusive of non-inclusive.
In the present invention, "A does not substantially contain components other than component a" means that the content of components other than "component a" in "A" is preferably 0.1% by mass or less. and more preferably 0.05% by mass or less.
（１）生分解性樹脂
本発明における生分解性樹脂は、ポリビニルアルコールを含む点以外は特に限定されず、生分解性樹脂として分類される任意の樹脂を採用出来る。生分解性樹脂は、１種を単独で、又は２種以上を組み合わせて用いることが出来る。
(1) Biodegradable resin The biodegradable resin in the present invention is not particularly limited except that it contains polyvinyl alcohol, and any resin classified as a biodegradable resin can be employed. A biodegradable resin can be used individually by 1 type or in combination of 2 or more types.
（１－１）ポリビニルアルコール（第１の生分解性樹脂）
ポリビニルアルコール（ＣＡＳ番号：９００２－８９－５）は、「ＰＶＡＬ」、「ＰＶＡ」等とも称される親水性ポリマーである。
(1-1) polyvinyl alcohol (first biodegradable resin)
Polyvinyl alcohol (CAS number: 9002-89-5) is a hydrophilic polymer also called "PVAL", "PVA" and the like.
本発明者は、ホウ砂による上述の機械的特性の向上効果が、ポリビニルアルコールを含む生分解性樹脂の存在下で特に顕著であることを見出した。 The present inventors have found that the effect of improving mechanical properties by borax is particularly remarkable in the presence of a biodegradable resin containing polyvinyl alcohol.
（１－２）第２の生分解性樹脂
本発明における生分解性樹脂は、ポリビニルアルコールからなるものでも良いが、ポリビニルアルコールと、ポリビニルアルコール以外のその他の生分解性樹脂との組み合わせからなるものであっても良い。
後者の態様において、ポリビニルアルコールは「第１の生分解性樹脂」と称され、その他の生分解性樹脂は「第２の生分解性樹脂」と称される。ただし、「第２の生分解性樹脂」は、１種の生分解性樹脂からなる態様、及び２種以上の生分解性樹脂の組み合わせからなる態様の何れも包含する。
(1-2) Second biodegradable resin The biodegradable resin in the present invention may consist of polyvinyl alcohol, but may consist of a combination of polyvinyl alcohol and other biodegradable resins other than polyvinyl alcohol. can be
In the latter embodiment, polyvinyl alcohol is referred to as the "first biodegradable resin" and the other biodegradable resin is referred to as the "second biodegradable resin." However, the "second biodegradable resin" encompasses both an embodiment consisting of one kind of biodegradable resin and an embodiment consisting of a combination of two or more kinds of biodegradable resins.
第２の生分解性樹脂としては、例えば、以下のものが挙げられる。
ポリ乳酸（ＰＬＡ）、ポリヒドロキシブチレート、ポリ（３－ヒドロキシブチレート－コ－３－ヒドロキシヘキサノエート）（ＰＨＢＨ）、ポリカプロラクトン、ポリブチレンサクシネート（ＰＢＳ）、ポリエチレンサクシネート（ＰＢＡ）、ポリリンゴ酸、ポリグリコール酸（ＰＧＡ）、ポリジオキサノン、ポリ（２－オキセタノン）、ポリブチレンアジペートテレフタレート（ＰＢＡＴ）、ポリブチレンサクシネートアジペート（ＰＢＳＡ）等の脂肪族ポリエステル樹脂；
ポリブチレンテレフタレート／サクシネート（ＰＥＴＳ）、ポリブチレンアジペート／テレフタレート（ＰＢＡＨ）、ポリテトラメチレンアジペート／テレフタレート等の脂肪族芳香族共重合ポリエステル樹脂；
デンプン、セルロース、キチン、キトサン、グルテン、ゼラチン、ゼイン、大豆タンパク、コラーゲン、ケラチン等の天然高分子と上記の脂肪族ポリエステル樹脂又は脂肪族芳香族コポリエステル樹脂との混合物等。
Examples of the second biodegradable resin include the following.
polylactic acid (PLA), polyhydroxybutyrate, poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH), polycaprolactone, polybutylene succinate (PBS), polyethylene succinate (PBA), Aliphatic polyester resins such as polymalic acid, polyglycolic acid (PGA), polydioxanone, poly(2-oxetanone), polybutylene adipate terephthalate (PBAT), polybutylene succinate adipate (PBSA);
Aliphatic-aromatic copolyester resins such as polybutylene terephthalate/succinate (PETS), polybutylene adipate/terephthalate (PBAH), polytetramethylene adipate/terephthalate;
Mixtures of natural polymers such as starch, cellulose, chitin, chitosan, gluten, gelatin, zein, soybean protein, collagen, keratin, etc. with the above aliphatic polyester resins or aliphatic aromatic copolyester resins.
本発明の効果が奏され易いという観点から、第２の生分解性樹脂は、脂肪族ポリエステル樹脂が好ましい。
脂肪族ポリエステル樹脂としては、ポリ乳酸、ポリヒドロキシブチレート、ポリ（３－ヒドロキシブチレート－コ－３－ヒドロキシヘキサノエート）、ポリカプロラクトン、ポリブチレンサクシネート、ポリエチレンサクシネート、ポリリンゴ酸、ポリグリコール酸、ポリジオキサノン、ポリ（２－オキセタノン）、ポリブチレンアジペートテレフタレート、ポリブチレンサクシネートアジペートからなる群から選択される１以上が好ましい。
Aliphatic polyester resin is preferable as the second biodegradable resin from the viewpoint that the effects of the present invention are easily exhibited.
Aliphatic polyester resins include polylactic acid, polyhydroxybutyrate, poly(3-hydroxybutyrate-co-3-hydroxyhexanoate), polycaprolactone, polybutylene succinate, polyethylene succinate, polymalic acid, polyglycol. One or more selected from the group consisting of acids, polydioxanone, poly(2-oxetanone), polybutylene adipate terephthalate, and polybutylene succinate adipate are preferred.
なお、本発明において「ポリ乳酸」とは、原料モノマーとして乳酸成分のみを縮重合させて得られるポリ乳酸ホモポリマー、及び、原料モノマーとして乳酸成分と該乳酸成分と共重合可能なその他のモノマー成分とを縮重合させて得られるポリ乳酸コポリマーを包含する。 In the present invention, "polylactic acid" means a polylactic acid homopolymer obtained by condensation polymerization of only a lactic acid component as a raw material monomer, a lactic acid component as a raw material monomer, and other monomer components copolymerizable with the lactic acid component. It includes a polylactic acid copolymer obtained by condensation polymerization of and.
（１－３）生分解性樹脂の含有量
生分解性樹脂の含有量は、成形性等の観点から適宜設定出来る。
(1-3) Content of biodegradable resin The content of biodegradable resin can be appropriately set from the viewpoint of moldability and the like.
ポリビニルアルコールの含有量の上限は、生分解性樹脂に対して、好ましくは５０質量％以下、より好ましくは４０質量％以下である。
ポリビニルアルコールの含有量の下限は、生分解性樹脂に対して、好ましくは１０質量％以上、より好ましくは２０質量％以上である。
The upper limit of the polyvinyl alcohol content is preferably 50% by mass or less, more preferably 40% by mass or less, relative to the biodegradable resin.
The lower limit of the polyvinyl alcohol content is preferably 10% by mass or more, more preferably 20% by mass or more, relative to the biodegradable resin.
ポリビニルアルコールの含有量の上限は、樹脂組成物に対して、好ましくは３５質量％以下、より好ましくは３０質量％以下である。
ポリビニルアルコールの含有量の下限は、樹脂組成物に対して、好ましくは１質量％以上、より好ましくは２質量％以上である。
The upper limit of the polyvinyl alcohol content is preferably 35% by mass or less, more preferably 30% by mass or less, relative to the resin composition.
The lower limit of the polyvinyl alcohol content is preferably 1% by mass or more, more preferably 2% by mass or more, relative to the resin composition.
生分解性樹脂の含有量（総量）の上限は、樹脂組成物に対して、好ましくは７０質量％以下、より好ましくは６０質量％以下である。
生分解性樹脂の含有量（総量）の下限は、樹脂組成物に対して、好ましくは１０質量％以上、より好ましくは２０質量％以上である。
The upper limit of the content (total amount) of the biodegradable resin is preferably 70% by mass or less, more preferably 60% by mass or less, relative to the resin composition.
The lower limit of the content (total amount) of the biodegradable resin is preferably 10% by mass or more, more preferably 20% by mass or more, relative to the resin composition.
本発明の効果が奏され易いという観点から、本発明の樹脂組成物に含まれる樹脂成分は、生分解性樹脂以外の樹脂成分を実質的に含まないことが好ましく、生分解性樹脂のみからなることがより好ましい。 From the viewpoint that the effects of the present invention are easily exhibited, the resin component contained in the resin composition of the present invention preferably does not substantially contain resin components other than biodegradable resins, and consists only of biodegradable resins. is more preferable.
（２）無機物質粉末
無機物質粉末（ホウ砂を除く）としては、特に限定されず、通常の樹脂製品等に含まれるものを採用出来る。無機物質粉末は、１種を単独で、又は２種以上を組み合わせて用いることが出来る。
(2) Inorganic substance powder The inorganic substance powder (excluding borax) is not particularly limited, and those contained in ordinary resin products can be used. The inorganic substance powder can be used singly or in combination of two or more.
無機物質粉末としては、例えば、以下のものが挙げられる。
金属（カルシウム、マグネシウム、アルミニウム、チタン、鉄、亜鉛等）の炭酸塩、硫酸塩、珪酸塩、リン酸塩、又はホウ酸塩；
金属（カルシウム、マグネシウム、アルミニウム、チタン、鉄、亜鉛等）の酸化物；
上記塩又は酸化物の水和物等。
Examples of inorganic substance powders include the following.
Carbonates, sulfates, silicates, phosphates, or borates of metals (calcium, magnesium, aluminum, titanium, iron, zinc, etc.);
oxides of metals (calcium, magnesium, aluminum, titanium, iron, zinc, etc.);
hydrates of the above salts or oxides;
無機物質粉末としては、例えば、炭酸カルシウム、炭酸マグネシウム、酸化亜鉛、酸化チタン、シリカ、アルミナ、クレー、タルク、カオリン、水酸化アルミニウム、水酸化マグネシウム、ケイ酸アルミニウム、ケイ酸マグネシウム、ケイ酸カルシウム、硫酸アルミニウム、硫酸マグネシウム、硫酸カルシウム、リン酸マグネシウム、硫酸バリウム、珪砂、カーボンブラック、ゼオライト、モリブデン、珪藻土、セリサイト、シラス、亜硫酸カルシウム、硫酸ナトリウム、チタン酸カリウム、ベントナイト、黒鉛等が挙げられる。 Examples of inorganic substance powders include calcium carbonate, magnesium carbonate, zinc oxide, titanium oxide, silica, alumina, clay, talc, kaolin, aluminum hydroxide, magnesium hydroxide, aluminum silicate, magnesium silicate, calcium silicate, aluminum sulfate, magnesium sulfate, calcium sulfate, magnesium phosphate, barium sulfate, silica sand, carbon black, zeolite, molybdenum, diatomaceous earth, sericite, shirasu, calcium sulfite, sodium sulfate, potassium titanate, bentonite, graphite and the like.
無機物質粉末は合成のものであっても良く、天然鉱物由来のものであっても良い。 The inorganic substance powder may be synthetic or derived from natural minerals.
無機物質粉末の形状は、特に限定されず、粒子状（球形、不定形状等）、フレーク状、顆粒状、繊維状等の何れであっても良い。 The shape of the inorganic powder is not particularly limited, and may be particulate (spherical, irregular, etc.), flakes, granules, fibers, or the like.
無機物質粉末は表面処理剤で処理されていても良く、処理されていなくても良い。
好ましい表面処理剤としては、無機物質粉末の分散性等を高める観点から、スルホン酸を含む表面処理剤、スルホン酸塩を含む表面処理剤、及びリン酸エステルを含有する表面処理剤からなる群から選択される１以上等が挙げられる。
表面処理剤は、１種を単独で、又は２種以上を組み合わせて用いることが出来る。
The inorganic powder may or may not be treated with a surface treatment agent.
Preferred surface treatment agents are selected from the group consisting of a surface treatment agent containing sulfonic acid, a surface treatment agent containing a sulfonate, and a surface treatment agent containing a phosphate ester, from the viewpoint of enhancing the dispersibility of the inorganic substance powder. 1 or more to be selected, and the like.
The surface treatment agents can be used singly or in combination of two or more.
無機物質粉末としては、炭酸カルシウム粉末が好ましい。
通常、樹脂組成物に対して炭酸カルシウム粉末の配合量を高めると、樹脂組成物から得られる成形品の機械的特性を高め易くなる。他方で、生分解性樹脂を含む樹脂組成物において炭酸カルシウム粉末の配合量を高めると、耐加水分解性が低下するため、成形品の機械的特性が劣り易くなる。
しかし、本発明によれば、所定量のホウ砂を配合することで、耐加水分解性の低下を抑制し、良好な機械的特性を備える生分解性樹脂含有成形品が得られる。
Calcium carbonate powder is preferable as the inorganic powder.
Generally, increasing the amount of calcium carbonate powder compounded with respect to the resin composition facilitates enhancing the mechanical properties of molded articles obtained from the resin composition. On the other hand, if the amount of calcium carbonate powder compounded in a resin composition containing a biodegradable resin is increased, the resistance to hydrolysis is lowered, so that the mechanical properties of the molded article tend to deteriorate.
However, according to the present invention, by blending a predetermined amount of borax, deterioration of hydrolysis resistance is suppressed, and a biodegradable resin-containing molded article having good mechanical properties can be obtained.
炭酸カルシウム粉末としては、重質炭酸カルシウム粉末、及び軽質炭酸カルシウム粉末の何れでも良い。 The calcium carbonate powder may be either heavy calcium carbonate powder or light calcium carbonate powder.
「重質炭酸カルシウム」とは、炭酸カルシウム（ＣａＣＯ３）を主成分とする天然原料（石灰石等）を機械的に粉砕（乾式法、湿式法等）して得られる炭酸カルシウムである。
「軽質炭酸カルシウム」とは、合成法（化学的沈殿反応等）により調製された炭酸カルシウムである。
したがって、重質炭酸カルシウム、及び軽質炭酸カルシウムは互いに明確に区別される。
“Heavy calcium carbonate” is calcium carbonate obtained by mechanically pulverizing (dry method, wet method, etc.) a natural raw material (limestone, etc.) containing calcium carbonate (CaCO 3 ) as a main component.
"Light calcium carbonate" is calcium carbonate prepared by a synthetic method (such as a chemical precipitation reaction).
Therefore, heavy calcium carbonate and light calcium carbonate are clearly distinguished from each other.
生分解性樹脂に対してより多くの接触界面を有し、本発明の効果が奏され易いという観点から、無機物質粉末は重質炭酸カルシウム粉末を含むことが好ましく、無機物質粉末が重質炭酸カルシウム粉末からなることがより好ましい。 From the viewpoint of having more contact interfaces with the biodegradable resin and facilitating the effects of the present invention, the inorganic substance powder preferably contains heavy calcium carbonate powder, and the inorganic substance powder contains heavy carbonate. More preferably, it consists of calcium powder.
無機物質粉末における、ＪＩＳ Ｍ－８５１１に準じた空気透過法に基づく平均粒子径は、分散性を高め易いという観点から、好ましくは０．７μｍ以上６．０μｍ以下、より好ましくは１．０μｍ以上５．０μｍ以下である。 The average particle size of the inorganic substance powder based on the air permeation method according to JIS M-8511 is preferably 0.7 μm or more and 6.0 μm or less, more preferably 1.0 μm or more, from the viewpoint of easily improving dispersibility. 0 μm or less.
本発明において「平均粒子径」とは、ＪＩＳ Ｍ－８５１１に準じた空気透過法による比表面積の測定結果から計算した値を意味する。測定機器としては、例えば、島津製作所社製の比表面積測定装置「ＳＳ－１００型」を好ましく用いることが出来る。 In the present invention, the "average particle size" means a value calculated from the measurement results of the specific surface area by the air permeation method according to JIS M-8511. As a measuring device, for example, a specific surface area measuring device "SS-100 type" manufactured by Shimadzu Corporation can be preferably used.
無機物質粉末の含有量は、成形性や分散性等の観点から適宜設定出来る。
無機物質粉末の含有量（ホウ砂を除く）の上限は、樹脂組成物に対して、好ましくは９０質量％以下、より好ましくは８０質量％以下である。
無機物質粉末の含有量（ホウ砂を除く）の下限は、樹脂組成物に対して、好ましくは３０質量％以上、より好ましくは４０質量％以上である。
The content of the inorganic substance powder can be appropriately set from the viewpoint of moldability, dispersibility, and the like.
The upper limit of the content of the inorganic substance powder (excluding borax) is preferably 90% by mass or less, more preferably 80% by mass or less, relative to the resin composition.
The lower limit of the content of the inorganic substance powder (excluding borax) is preferably 30% by mass or more, more preferably 40% by mass or more, relative to the resin composition.
（３）ホウ砂
本発明の樹脂組成物は、樹脂組成物に対して、１．０質量％以上２０．０質量％以下のホウ砂を含む。
(3) Borax The resin composition of the present invention contains 1.0% by mass or more and 20.0% by mass or less of borax with respect to the resin composition.
ホウ砂（化学式：Ｎａ２Ｂ４Ｏ５（ＯＨ）４・８Ｈ２Ｏ）は、無機物質の１種である。本発明の樹脂組成物は、少なくとも２種の無機物質、すなわち、上述の無機物質粉末、及びホウ砂を含む。 Borax (chemical formula: Na 2 B 4 O 5 (OH) 4.8H 2 O) is a kind of inorganic substance. The resin composition of the present invention comprises at least two inorganic substances, namely the inorganic powder described above and borax.
ホウ砂の含有量の上限は、樹脂組成物に対して、２０．０質量％以下、好ましくは１０．０質量％以下、より好ましくは８．０質量％以下である。 The upper limit of the content of borax is 20.0% by mass or less, preferably 10.0% by mass or less, more preferably 8.0% by mass or less, relative to the resin composition.
ホウ砂の含有量の下限は、樹脂組成物に対して、１．０質量％以上、好ましくは２．０質量％以上、より好ましくは３．０質量％以上である。 The lower limit of the content of borax is 1.0% by mass or more, preferably 2.0% by mass or more, more preferably 3.0% by mass or more, relative to the resin composition.
ホウ砂における、ＪＩＳ Ｍ－８５１１に準じた空気透過法に基づく平均粒子径は、分散性を高め易いという観点から、好ましくは０．７μｍ以上６．０μｍ以下、より好ましくは１．０μｍ以上５．０μｍ以下である。 The average particle size of borax based on the air permeation method according to JIS M-8511 is preferably 0.7 μm or more and 6.0 μm or less, more preferably 1.0 μm or more, from the viewpoint of easily improving dispersibility. 0 μm or less.
（４）その他の成分
本発明の樹脂組成物には、本発明の効果を阻害しない範囲で、上記の成分にくわえて、その他の成分を配合しても良く、配合しなくても良い。
その他の成分としては、例えば、可塑剤（アセチルクエン酸トリブチル等）、樹脂（熱可塑性樹脂等）、滑剤、色剤、カップリング剤、流動性改良材（流動性調整剤）、架橋剤、分散剤、紫外線吸収剤、難燃剤、発泡剤、帯電防止剤等が挙げられる。これらの添加剤は、１種を単独で、又は２種以上を組み合わせて用いることが出来る。
(4) Other components The resin composition of the present invention may or may not contain other components in addition to the above components as long as the effects of the present invention are not impaired.
Other components include, for example, plasticizers (acetyl tributyl citrate, etc.), resins (thermoplastic resins, etc.), lubricants, coloring agents, coupling agents, fluidity improvers (fluidity modifiers), cross-linking agents, and dispersants. agents, ultraviolet absorbers, flame retardants, foaming agents, antistatic agents, and the like. These additives can be used singly or in combination of two or more.
上記成分のうち、アセチルクエン酸トリブチル（ＣＡＳ番号：７７－９０－７）を配合すると、本発明の効果がより得られ易い傾向にある。
アセチルクエン酸トリブチルの含有量は、得ようとする効果に応じて適宜設定出来るが、樹脂組成物に対して、好ましくは５．０質量％以上２０．０質量％以下、より好ましくは７．０質量％以上１８．０質量％以下である。
Among the above components, when acetyl tributyl citrate (CAS number: 77-90-7) is blended, the effects of the present invention tend to be obtained more easily.
The content of acetyl tributyl citrate can be appropriately set according to the effect to be obtained, but is preferably 5.0% by mass or more and 20.0% by mass or less, more preferably 7.0% by mass, based on the resin composition. It is more than mass % and below 18.0 mass %.
ただし、本発明の好ましい態様は、樹脂組成物が、生分解性樹脂、無機物質粉末、及びホウ砂からなる態様を包含する。 However, preferred embodiments of the present invention include embodiments in which the resin composition comprises biodegradable resin, inorganic substance powder, and borax.
（５）各成分の配合比
本発明の樹脂組成物において、生分解性樹脂と、無機物質粉末との質量比（生分解性樹脂：無機物質粉末）は、１０：９０～７０：３０、好ましくは３０：７０～７０：３０、より好ましくは４０：６０～７０：３０である。
(5) Compounding ratio of each component In the resin composition of the present invention, the mass ratio of the biodegradable resin to the inorganic substance powder (biodegradable resin:inorganic substance powder) is preferably 10:90 to 70:30. is 30:70 to 70:30, more preferably 40:60 to 70:30.
生分解性樹脂が、第１の生分解性樹脂と、第２の生分解性樹脂の両方を含む場合、その質量比（第１の生分解性樹脂：第２の生分解性樹脂）は、好ましくは１０：９０～５０：５０、より好ましくは２０：８０～５０：５０である。 When the biodegradable resin contains both the first biodegradable resin and the second biodegradable resin, the mass ratio (first biodegradable resin: second biodegradable resin) is It is preferably 10:90 to 50:50, more preferably 20:80 to 50:50.
（６）樹脂組成物の形態等
本発明の樹脂組成物の形態等は、得ようとする成形品の種類等に応じて、任意の形態等であり得る。
(6) Form etc. of Resin Composition The form etc. of the resin composition of the present invention may be any form etc. according to the type of molded article to be obtained.
樹脂組成物の形態としては特に限定されないが、例えば、ペレット等が挙げられる。 The form of the resin composition is not particularly limited, and examples thereof include pellets.
ペレットの形状としては特に限定されないが、例えば、円柱、球形、楕円球状等が挙げられる。 The shape of the pellet is not particularly limited, but examples thereof include cylindrical, spherical, ellipsoidal and the like.
ペレットのサイズは特に限定されない。例えば、球形ペレットの場合、直径１ｍｍ以上１０ｍｍ以下であり得る。楕円球状のペレットの場合、縦横比０．１以上１．０以下、縦横の長さ１ｍｍ以上１０ｍｍ以下であり得る。円柱ペレットの場合、直径１ｍｍ以上１０ｍｍ以下、長さ１ｍｍ以上１０ｍｍ以下であり得る。 The pellet size is not particularly limited. For example, spherical pellets may have a diameter of 1 mm or more and 10 mm or less. In the case of elliptical spherical pellets, the aspect ratio may be 0.1 or more and 1.0 or less, and the length and width may be 1 mm or more and 10 mm or less. In the case of cylindrical pellets, they may have a diameter of 1 mm or more and 10 mm or less and a length of 1 mm or more and 10 mm or less.
＜樹脂組成物の製造方法＞
本発明の樹脂組成物の製造方法としては、樹脂組成物の形態や用途等に応じて、従来知られる方法や条件を採用出来る。
<Method for producing resin composition>
As a method for producing the resin composition of the present invention, conventionally known methods and conditions can be employed depending on the form and application of the resin composition.
本発明の樹脂組成物は、例えば、構成成分を、混合、溶融混練等することで得られる。 The resin composition of the present invention can be obtained, for example, by mixing or melt-kneading the constituent components.
本発明の樹脂組成物を製造するための機械は、樹脂組成物の形態や用途等に応じて選択出来、押出機、ニーダー、バンバリーミキサー、混練機（二軸混練機等）が挙げられる。 Machines for producing the resin composition of the present invention can be selected according to the form and application of the resin composition, and include extruders, kneaders, Banbury mixers, and kneaders (twin-screw kneaders, etc.).
＜成形品＞
本発明の成形品は、本発明の樹脂組成物からなり、任意の成形方法によって本発明の樹脂組成物を成形することで得られる。
<Molded product>
The molded article of the present invention is made of the resin composition of the present invention, and is obtained by molding the resin composition of the present invention by any molding method.
本発明の成形品は、用途等に応じた任意の形状であり得る。
本発明の成形品は、例えば、フィルム、シート、容器体（食品容器等）、日用品（各種使い捨て製品等）、自動車用部品、電気電子部品、各種消耗品（建築部材等の分野におけるもの等）等であり得る。
The molded article of the present invention may have any shape according to its use.
The molded article of the present invention includes, for example, films, sheets, containers (food containers, etc.), daily necessities (various disposable products, etc.), automotive parts, electrical and electronic parts, various consumables (such as those in the field of construction materials, etc.). etc.
本発明の成形品の製造方法は、得ようとする成形品に応じて適宜選択出来る。
本発明の成形品の製造方法としては、例えば、押出成形法、インフレーション成形法、射出成形法、発泡射出成形法、射出圧縮成形法、ブロー成形法、プレス成形法、カレンダー成形法、真空成形法等が挙げられる。
The method for producing the molded article of the present invention can be appropriately selected according to the molded article to be obtained.
Methods for producing the molded article of the present invention include, for example, extrusion molding, inflation molding, injection molding, foam injection molding, injection compression molding, blow molding, press molding, calendar molding, and vacuum molding. etc.
本発明の樹脂組成物は、特に、押出成形に適する。したがって、本発明の成形品は、好ましくは押出成形品である。 The resin composition of the present invention is particularly suitable for extrusion molding. Accordingly, the molded articles of the present invention are preferably extruded articles.
押出成形品としては、シート、フィルム、中空品が挙げられる。 Extruded articles include sheets, films and hollow articles.
以下に、実施例により本発明を更に詳しく説明するが、本発明はこれらの実施例に限定されるものではない。 EXAMPLES The present invention will be described in more detail below with reference to Examples, but the present invention is not limited to these Examples.
＜樹脂組成物の作製＞
以下の方法で樹脂組成物を作製した。
<Preparation of resin composition>
A resin composition was produced by the following method.
（１）材料の準備
以下の材料を準備した。
なお、以下、「平均粒径」とは、島津製作所社製の比表面積測定装置「ＳＳ－１００型」を用い、ＪＩＳ Ｍ－８５１１に準じた空気透過法による比表面積の測定結果から計算した値である。
(1) Preparation of materials The following materials were prepared.
Hereinafter, the "average particle size" is a value calculated from the results of specific surface area measurement by an air permeation method according to JIS M-8511 using a specific surface area measuring device "SS-100 type" manufactured by Shimadzu Corporation. is.
（生分解性樹脂）
生分解性樹脂－１：ポリビニルアルコールからなる。
生分解性樹脂－２：ポリビニルアルコール３０質量％、及びポリ乳酸７０質量％からなる。
(biodegradable resin)
Biodegradable Resin-1: Consists of polyvinyl alcohol.
Biodegradable resin-2: Consists of 30% by mass of polyvinyl alcohol and 70% by mass of polylactic acid.
（無機物質粉末）
ＣＣ－１：重質炭酸カルシウム粉末（平均粒径：２．２μｍ、表面処理なし）
ＣＣ－２：重質炭酸カルシウム粉末（平均粒径：７．２μｍ、表面処理なし）
ＣＣ－３：軽質炭酸カルシウム粉末（平均粒径：１．５μｍ、表面処理なし）
(inorganic substance powder)
CC-1: Heavy calcium carbonate powder (average particle size: 2.2 μm, no surface treatment)
CC-2: Heavy calcium carbonate powder (average particle size: 7.2 μm, no surface treatment)
CC-3: light calcium carbonate powder (average particle size: 1.5 μm, no surface treatment)
（添加剤）
添加剤－１：ホウ砂（平均粒径：７．２μｍ、表面処理なし）
添加剤－２：アセチルクエン酸トリブチル
(Additive)
Additive-1: Borax (average particle size: 7.2 μm, no surface treatment)
Additive-2: Acetyl tributyl citrate
（２）樹脂組成物の作製
表中の「樹脂組成物の組成」に示す割合で、各材料を、同方向回転二軸混錬押出機「ＨＫ－２５Ｄ」（φ２５ｍｍ、Ｌ／Ｄ＝４１、（株）パーカーコーポレーション製）に投入し、シリンダー温度１９０～２００℃でストランド押出後、冷却、カットすることでペレットを作製した。本例において、該ペレットが、本発明の樹脂組成物に相当する。
(2) Preparation of resin composition In the ratio shown in "Resin composition composition" in the table, each material was mixed with a co-rotating twin-screw kneading extruder "HK-25D" (φ 25 mm, L / D = 41, (manufactured by Parker Corporation), extruded strands at a cylinder temperature of 190 to 200° C., cooled and cut to prepare pellets. In this example, the pellets correspond to the resin composition of the present invention.
（３）評価
得られた樹脂組成物から成形品を作製し、以下の評価に供した。その結果を、表中の「評価」に示す。
(3) Evaluation A molded article was produced from the obtained resin composition and subjected to the following evaluations. The results are shown in "Evaluation" in the table.
（３－１）機械的特性の評価
以下の方法で、押出成形品の機械的特性（引張強さ）を評価した。
(3-1) Evaluation of mechanical properties Mechanical properties (tensile strength) of extruded articles were evaluated by the following methods.
［機械的特性の評価方法］
各ペレットから、ＪＩＳ Ｋ６２５１：２０１７のダンベル状３号形試験片（押出成形品）を作製した。
得られた試験片について、ＪＩＳ Ｋ７１６１－１：２０１４により、ストログラフ（（株）東洋精機製作所製）を用いて、引張試験を行った。温度は２３℃、延伸速度は５０ｍｍ／分に設定し、引張強さを測定した。本例において、引張強さが大きいほど、機械的特性が良好であることを意味する。
[Method for evaluating mechanical properties]
From each pellet, a JIS K6251:2017 dumbbell-shaped No. 3 test piece (extrusion molding) was produced.
The obtained test piece was subjected to a tensile test according to JIS K7161-1:2014 using a strograph (manufactured by Toyo Seiki Seisakusho Co., Ltd.). The temperature was set at 23° C., the drawing speed was set at 50 mm/min, and the tensile strength was measured. In this example, higher tensile strength means better mechanical properties.
［機械的特性の評価基準］
Ａ：引張強さが４０ＭＰａ以上だった。
Ｂ：引張強さが３０ＭＰａ以上４０ＭＰａ未満だった。
Ｃ：引張強さが３０ＭＰａ未満だった。
[Evaluation Criteria for Mechanical Properties]
A: Tensile strength was 40 MPa or more.
B: The tensile strength was 30 MPa or more and less than 40 MPa.
C: Tensile strength was less than 30 MPa.
（３－２）生分解性の評価
以下の方法で、押出成形品の生分解性を評価した。
(3-2) Evaluation of biodegradability The biodegradability of extruded articles was evaluated by the following method.
［生分解性の評価方法］
各ペレットを二軸混練押出機に投入し、１９０℃で溶融混練後、Ｔダイにてシート状（厚さ１．２ｍｍ）に成形し、押出成形品を得た。
押出成形品を、汲み置きした海水１０ｍｌと共に２５ｍｌのバイアル瓶内に入れ、室温（２５℃±５℃）で１月間放置した後、押出成形品の目視観察を行った。
[Biodegradability evaluation method]
Each pellet was charged into a twin-screw kneading extruder, melt-kneaded at 190° C., and then formed into a sheet (thickness: 1.2 mm) with a T-die to obtain an extruded product.
The extruded product was placed in a 25 ml vial bottle together with 10 ml of pumped seawater and allowed to stand at room temperature (25° C.±5° C.) for 1 month, after which the extruded product was visually observed.
［生分解性の評価基準］
Ａ：押出成形品が分解されている。
Ｂ：押出成形品が部分的に分解されている。
Ｃ：押出成形品に変化が認められない。
[Biodegradability evaluation criteria]
A: The extruded product is decomposed.
B: The extruded product is partially decomposed.
C: No change was observed in the extruded product.
各表の通り、本発明の要件を満たす樹脂組成物から得られた成形品は、良好な機械的特性及び生分解性を備えていた。
良好な機械的特性は、生分解性樹脂の成形時における加水分解が抑制されたことによるものと推察された。
As shown in each table, molded articles obtained from resin compositions satisfying the requirements of the present invention had good mechanical properties and biodegradability.
It was presumed that the good mechanical properties were due to the suppression of hydrolysis during molding of the biodegradable resin.
無機物質粉末として、重質炭酸カルシウム粉末を用いた場合、更には、重質炭酸カルシウム粉末の平均粒子径が０．７μｍ以上６．０μｍ以下である場合に、上記傾向が得られ易かった。
また、ホウ砂とともにアセチルクエン酸トリブチルを用いた場合にも、上記傾向が得られ易かった。
When heavy calcium carbonate powder was used as the inorganic substance powder, and further when the average particle size of the heavy calcium carbonate powder was 0.7 μm or more and 6.0 μm or less, the above tendency was easily obtained.
Also, when acetyl tributyl citrate was used together with borax, the above tendency was likely to be obtained.
これに対し、本発明の要件を満たしていない場合、得られた成形品は、機械的特性及び／又は生分解性が劣り易かった。 On the other hand, when the requirements of the present invention are not satisfied, the resulting molded article tends to be inferior in mechanical properties and/or biodegradability.
なお、データは示していないが、本例で用いた生分解性樹脂以外の生分解性樹脂を用いた場合であっても上記同様の傾向が確認されたが、生分解性樹脂が、ポリビニルアルコールを含まない場合、機械的特性が劣る傾向にあった。
例えば、「実施例１－１」において、「生分解性樹脂－１」の代わりにポリ乳酸のみからなる生分解性樹脂を用いた場合、機械的特性の評価はＢ～Ｃだった。
Although the data is not shown, the same tendency as above was confirmed even when a biodegradable resin other than the biodegradable resin used in this example was used. When not containing, the mechanical properties tended to be inferior.
For example, in "Example 1-1", when a biodegradable resin consisting only of polylactic acid was used instead of "biodegradable resin-1", the mechanical properties were evaluated as B to C.
Claims (9)
前記樹脂組成物が、生分解性樹脂と、無機物質粉末と、ホウ砂と、を含み、
前記生分解性樹脂と、前記無機物質粉末との質量比が、１０：９０～７０：３０であり、
前記生分解性樹脂が、ポリビニルアルコールを含み、
前記無機物質粉末が、重質炭酸カルシウム粉末であり、
前記ホウ砂の含有量が、前記樹脂組成物に対して、１．０質量％以上２０．０質量％以下である、
樹脂組成物。 A resin composition,
The resin composition contains a biodegradable resin, an inorganic substance powder, and borax,
The mass ratio of the biodegradable resin and the inorganic substance powder is 10:90 to 70:30,
The biodegradable resin contains polyvinyl alcohol,
The inorganic substance powder is heavy calcium carbonate powder ,
The content of the borax is 1.0% by mass or more and 20.0% by mass or less with respect to the resin composition.
Resin composition.
ポリビニルアルコールからなる第１の生分解性樹脂と、
ポリ乳酸、ポリヒドロキシブチレート、ポリ（３－ヒドロキシブチレート－コ－３－ヒドロキシヘキサノエート）、ポリカプロラクトン、ポリブチレンサクシネート、ポリエチレンサクシネート、ポリリンゴ酸、ポリグリコール酸、ポリジオキサノン、ポリ（２－オキセタノン）、ポリブチレンアジペートテレフタレート、及びポリブチレンサクシネートアジペートからなる群から選択される１以上からなる第２の生分解性樹脂と、からなる、
請求項１に記載の樹脂組成物。 The biodegradable resin is
a first biodegradable resin made of polyvinyl alcohol;
Polylactic acid, polyhydroxybutyrate, poly(3-hydroxybutyrate-co-3-hydroxyhexanoate), polycaprolactone, polybutylene succinate, polyethylene succinate, polymalic acid, polyglycolic acid, polydioxanone, poly(2 -oxetanone), polybutylene adipate terephthalate, and a second biodegradable resin consisting of one or more selected from the group consisting of polybutylene adipate terephthalate and polybutylene succinate adipate,
The resin composition according to claim 1.
前記アセチルクエン酸トリブチルの含有量が、前記樹脂組成物に対して、５．０質量％以上２０．０質量％以下である、請求項１に記載の樹脂組成物。 The resin composition further comprises acetyl tributyl citrate,
2. The resin composition according to claim 1, wherein the content of said tributyl acetylcitrate is 5.0% by mass or more and 20.0% by mass or less with respect to said resin composition.
9. The molded article of claim 8 , wherein the molded article is an extruded sheet.
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| CN108795306A (en) | 2018-05-29 | 2018-11-13 | 安徽省通信产业服务有限公司 | A kind of water proof anti-seepage high temperature resistant telecommunications electric insulating tape |
| CN110341005A (en) | 2019-07-16 | 2019-10-18 | 睢宁鹏翔木业有限公司 | A kind of production method of environment-friendly type three-ply board |
| JP6916571B1 (en) | 2021-03-25 | 2021-08-11 | 株式会社Ｔｂｍ | Resin composition and molded product |
| JP7029210B1 (en) | 2021-10-19 | 2022-03-03 | 株式会社Tbm | Fertilizer particles |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108795306A (en) | 2018-05-29 | 2018-11-13 | 安徽省通信产业服务有限公司 | A kind of water proof anti-seepage high temperature resistant telecommunications electric insulating tape |
| CN110341005A (en) | 2019-07-16 | 2019-10-18 | 睢宁鹏翔木业有限公司 | A kind of production method of environment-friendly type three-ply board |
| JP6916571B1 (en) | 2021-03-25 | 2021-08-11 | 株式会社Ｔｂｍ | Resin composition and molded product |
| JP7029210B1 (en) | 2021-10-19 | 2022-03-03 | 株式会社Tbm | Fertilizer particles |
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