WO2014192388A1 - 抗菌性組成物およびその製造方法 - Google Patents
抗菌性組成物およびその製造方法 Download PDFInfo
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- WO2014192388A1 WO2014192388A1 PCT/JP2014/058039 JP2014058039W WO2014192388A1 WO 2014192388 A1 WO2014192388 A1 WO 2014192388A1 JP 2014058039 W JP2014058039 W JP 2014058039W WO 2014192388 A1 WO2014192388 A1 WO 2014192388A1
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- WIPO (PCT)
- Prior art keywords
- eucommia
- antibacterial composition
- antibacterial
- washing
- product
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
- A01N65/08—Magnoliopsida [dicotyledons]
Definitions
- the present invention relates to an antibacterial composition and a method for producing the same, and relates to an antibacterial composition excellent in safety and environmentally friendly and a method for producing the same.
- Patent Document 1 a technique of adding an antibacterial agent to a predetermined resin component (Patent Document 1), or a technique of using an organic antibacterial agent (Patent Document) 2) etc. are known.
- JP 2005-132866 A Japanese Patent Laid-Open No. 11-236037
- An object of the present invention is to solve the above-mentioned problems.
- the object of the present invention is an antibacterial composition that is excellent in safety and environmentally friendly, and that can exhibit excellent antibacterial performance, and its It is to provide a manufacturing method.
- the present invention is an antibacterial composition containing an eucommia-derived biopolymer as an active ingredient.
- the eucommia-derived biopolymer has a weight average molecular weight of 1 ⁇ 10 3 to 5 ⁇ 10 6 .
- the eucommia-derived biopolymer is an elastomer obtained by biologically decaying eucommia to obtain an eucommia degradation product and washing the eucommia degradation product.
- the washing is high pressure water washing.
- the eucommia-derived biopolymer is a solvent-modified product obtained by extracting the elastomer with an organic solvent.
- the eucommia-derived biopolymer is a heat-modified product obtained by heating the elastomer or the solvent-modified product at 75 to 130 ° C. for 5 minutes or more.
- the eucommia is at least one site selected from the group consisting of eucommia seeds, pericarp, leaves, bark, and roots.
- the antibacterial composition of the present invention has an antibacterial action against gram-negative bacteria, gram-positive bacteria, or fungi.
- the present invention is also a method for producing an antimicrobial composition comprising: A method comprising biologically decaying eucommia to obtain a eucommia degradation product and washing the eucommia degradation product.
- the washing is high pressure water washing.
- the method further includes a step of extracting the elastomer obtained by washing the eucommia decomposition product with an organic solvent to obtain a solvent modified product.
- the method further includes the step of heating the elastomer obtained by washing the decomposition product of eucommia or the solvent-modified product at 75 ° C. to 130 ° C. for 5 minutes or more to obtain a heat-modified product.
- the eucommia is at least one site selected from the group consisting of eucommia seeds, pericarp, leaves, bark, and roots.
- the present invention is also a method for producing an antibacterial composition, which includes a step of extracting eucommia with an organic solvent to obtain an eucommia extract.
- the organic solvent is at least one solvent selected from the group consisting of toluene, chloroform, hexane, petroleum ether, petroleum benzine and tetrahydrofuran.
- the production method further includes a step of heating the eucommia extract at 75 ° C. to 130 ° C. for 5 minutes or more to obtain a heat-modified product.
- the eucommia is at least one site selected from the group consisting of eucommia seeds, pericarp, leaves, bark, and roots.
- the present invention is also a resin molded article having antibacterial properties molded using the above-mentioned antibacterial composition.
- the present invention exhibits excellent antibacterial performance, is excellent in human safety, and can reduce the environmental load during production and disposal. Furthermore, according to the present invention, an antibacterial composition can be easily produced. Furthermore, since the antimicrobial composition of the present invention does not require a large facility, for example, it can also be produced in a mountain area where eucommia logs are grown. Furthermore, the antibacterial composition of the present invention can be applied to various industrial products by taking advantage of the properties of the biopolymer derived from eucommia as an active ingredient as an elastomer.
- the antibacterial composition of the present invention contains a eucommia-derived biopolymer as an active ingredient.
- the eucommia-derived biopolymer in the present invention refers to an elastomer that can be obtained from eucommia.
- the weight average molecular weight of the eucommia-derived biopolymer is preferably 1 ⁇ 10 3 to 5 ⁇ 10 6 , more preferably 1 ⁇ 10 4 to 5 ⁇ 10 6 , and even more preferably 1 ⁇ 10 5 to 5.
- ⁇ 10 6 A biopolymer having such a high molecular weight has solid elastomer characteristics and can be applied to various resin moldings as an industrial raw material.
- the biopolymer obtained by high-pressure washing is in a fibrous form and there are fiber fusion sites.
- the eucommia-derived biopolymer in the present invention can be obtained, for example, by biologically decaying eucommia to obtain a eucommia degradation product and washing the eucommia degradation product.
- the eucommia-derived biopolymer in the present invention contains a trans polyisoprenoid as a main component.
- This trans polyisoprenoid has a higher molecular weight than eucommia rubber obtained by a conventional solvent extraction method.
- Eucommia ulmoides O. used for obtaining eucommia-derived biopolymers is a woody persimmon. Eucommia contains trans-polyisoprenoid in the whole plant, and any part may be used. Eucommia seeds, pericarps (each containing about 20% by weight or more), bark (12% or more), roots (about 3% by weight) and leaves (about 3% by weight) are preferable because they contain a large amount of trans polyisoprenoid. Used for. More preferred are seeds and pericarps. Eucommia may be used as it is, or a processed product such as a dried product may be used. In particular, it is possible to use eucommia oil residue as eucommia seeds and pericarps, which is suitable from the viewpoint of effective utilization of waste.
- the antibacterial composition of the present invention contains, for example, 10 wt% or more, preferably 30 wt% to 100 wt%, more preferably 50 wt% to 100 wt% of the above-described biopolymer derived from eucommia, based on the total weight. To do.
- the antibacterial composition of the present invention includes other polymers (for example, isoprene rubber, styrene butadiene rubber, butadiene rubber, polypropylene, polyethylene, phenol resin, polystyrene, polyester, and / or polyamide) in addition to the above-described biopolymer derived from eucommia. / Or other additives may be contained. Examples of such other additives include colorants, flame retardants, lubricants, fillers, and spreading agents, and combinations thereof.
- colorant examples include perylene dyes, coumarin dyes, thioindigo dyes, anthraquinone dyes, thioxanthone dyes, ferrocyanides such as bitumen, perinone dyes, quinoline dyes, quinacridone dyes, dioxazine dyes Organic colorants such as isoindolinone dyes and phthalocyanine dyes, carbon black, and combinations thereof.
- the flame retardant examples include brominated flame retardants such as tetrabromobisphenol A oligomer, monophosphate esters such as triphenyl phosphate and tricresyl phosphate, bisphenol A diphosphate, resorcin diphosphate, tetraxylenyl resorcin diphosphate Oligomer-type condensed phosphate esters, phosphorus-based flame retardants such as ammonium polyphosphate and red phosphorus, and various silicone-based flame retardants.
- a metal salt of aromatic sulfonic acid or a metal salt of perfluoroalkanesulfonic acid may be contained.
- lubricants include paraffin wax, n-butyl stearate, synthetic beeswax, natural beeswax, glycerin monoester, montanic acid wax, polyethylene wax, and pentaerythritol tetrastearate, and combinations thereof.
- filler examples include calcium carbonate, clay, silica, glass fiber, glass sphere, glass flake, carbon fiber, talc, mica, various whiskers, and combinations thereof.
- the content of the other additives in the present invention is not particularly limited. Any content can be selected by those skilled in the art as long as the antibacterial performance of the eucommia-derived biopolymer is not impaired.
- the antibacterial composition of the present invention can obtain the eucommia-derived biopolymer by using, for example, the method described in JP-A-2009-221306.
- the eucommia is biologically decayed.
- this biological decay can be performed, for example, by bringing eucommia into contact with an organism that can disrupt the eucommia's tissue structure.
- the term “decay” in the present specification refers to a state in which the eucommia is in its original state, but the structure of the eucommia is easily collapsed when it is eroded by a living organism such as a white rot fungus and touched by hand.
- a living organism such as a white rot fungus and touched by hand.
- the organism that can disrupt the tissue structure of eucommia is not particularly limited as long as it is an organism that can corrode and decompose eucommia tissue, cells, or intracellular components (metabolites, etc.). Examples include white rot fungi, brown rot fungi, soft rot fungi (including fungi and slime molds), microbial groups (Bacillus subtilis, actinomycetes, etc.), and insect groups (termites, mites, etc.). . These organisms may be used alone or in combination of two or more. For example, humus may be used as a complex flora of fungi, slime molds, actinomycetes, and the like.
- humus occurs, for example, between topsoil and understory vegetation of broad-leaved forests such as camphor, arakashi, shii, and tub.
- broad-leaved forests such as camphor, arakashi, shii, and tub.
- the ratio of eucommia and organisms that can disrupt the eucommia's tissue structure can be appropriately set in consideration of decay processing time and the like.
- eucommia pericarp
- the contact method include burying eucommia in a net bag in a humus soil, putting the humus soil in a net sack into an oil residue (seed and pericarp) of eucommia, and washing the humus soil with water.
- a method of supplying washing water to the eucommia is a method of supplying washing water to the eucommia.
- the contact time and temperature between the eucommia and the organism capable of disrupting the tissue structure of the eucommia are not particularly limited.
- the contact temperature may be a temperature range in which the organism can survive.
- the contact time is appropriately set according to the amount of living organisms and eucommia, contact temperature, and the like. For example, when eucommia peels are rotted on the forest floor of a broad-leaved forest using humus soil of a broad-leaved forest, a decay period of 2 weeks to 3 months, preferably 1 to 2 months is required.
- the resulting eucommia degradation product is washed.
- deposits such as a tissue mass, a cell dried product, a primary metabolite, and a secondary metabolite contained in the eucommia degradation product can be removed from the polymer derived from eucommia.
- a surfactant such as Tween (registered trademark)
- a polar solvent such as ethanol, methanol, or butanol
- the cleaning is not particularly limited as long as deposits are removed.
- it is carried out by repeating washing with water and tacking as appropriate (for example, 2 to 10 times, preferably 2 to 6 times).
- high pressure that is, under pressure exceeding normal pressure (10 5 Pa).
- the discharge pressure is 0.1 MPa to 15 MPa, preferably 2 MPa to 8 MPa, and the discharge water amount is 300 L / hour to 400 L / hour.
- the obtained polymer may be further subjected to alkali treatment.
- alkali treatment By performing the alkali treatment, lignin, phenol and the like are easily removed, and further purification is possible.
- the alkali treatment is performed by further washing the washed eucommia decomposition product with, for example, a 0.1N to 4N aqueous sodium hydroxide solution.
- the washing method in the alkali treatment is not particularly limited, and a person skilled in the art can select any method.
- an antibacterial composition composed of a biopolymer derived from eucommia can be obtained through the decay process and the washing process.
- the yield of the biopolymer obtained from the dried eucommia is, for example, 20% by weight or more, preferably 22% by weight, based on the weight of the dried eucommia. About 35% by weight.
- the eucommia-derived biopolymer contained in the antibacterial composition of the present invention contains a trans-isoprenoid as a main component, and may contain cellulose as necessary.
- the content of the trans-isoprenoid in the eucommia-derived biopolymer is preferably 50% by weight or more, more preferably 60% by weight or more, still more preferably 70% by weight or more based on the total weight of the biopolymer. Preferably it is 90 weight% or more, Most preferably, it is 95 weight% or more. It may be 100% by weight.
- the biopolymer derived from eucommia is a hard rubber, has a high surface hardness, and has various excellent properties such as thermoplasticity, electrical insulation, acid resistance, and alkali resistance.
- the biopolymer is configured as a mixed rubber of trans-type isoprenoid and cellulose.
- a mixed rubber can be obtained, for example, by performing an alkali treatment after the washing step.
- the biopolymer constituting the antibacterial composition of the present invention may further include those obtained by modifying the eucommia-derived biopolymer obtained above.
- a modification process includes, for example, a solvent dissolution process and a heat dissolution process.
- Solvent dissolution processing is performed, for example, by dissolving the eucommia-derived biopolymer obtained above in an organic solvent such as toluene, chloroform, formaldehyde, or a mixed solvent thereof, followed by drying, distilling off the solvent and modifying the solvent. This is done by obtaining a quality product.
- the hot melt processing is performed, for example, by heating a biopolymer derived from eucommia or the above solvent-modified product at 75 ° C. to 130 ° C. for 5 minutes or more to obtain a heat-modified product.
- a modification process for example, an antibacterial composition made of a smooth and soft polymer can be obtained.
- the eucommia-derived biopolymer obtained above is mixed with other additives as necessary using means / methods known to those skilled in the art, for example, until uniform.
- the antibacterial composition of the present invention can be obtained.
- the antibacterial composition of the present invention can also be produced as follows. Another example of the method for producing the antibacterial composition of the present invention will be described below.
- eucommia extract is produced by extracting eucommia with an organic solvent.
- eucommia can use, for example, eucommia seeds, pericarps, leaves, bark, and roots, or a combination thereof.
- the organic solvent that can be used is not particularly limited, and examples thereof include toluene, chloroform, hexane, petroleum ether, petroleum benzine, tetrahydrofuran, and a mixed solvent thereof.
- a eucommia extract is produced by distilling off the solvent from the extract using means well known to those skilled in the art.
- the eucommia extract obtained by the above other production method is further heated, for example, at 75 ° C. to 130 ° C. for 5 minutes or more to form a heat-modified product, which is used as an antibacterial composition. You can also. By such a modification process by heating, for example, an antibacterial composition made of a smooth and soft polymer can be obtained.
- the antibacterial composition of the present invention can be obtained.
- the antibacterial composition of the present invention may be added as one kind of resin additive to, for example, other resin components to which antibacterial properties are desired, or the antibacterial composition of the present invention itself, You may use as it is as an antibacterial resin composition.
- the antibacterial composition of the present invention includes, for example, containers containing products such as food and drink, drinking water, cosmetics, daily goods such as toothbrushes, stationery, and household appliances, handrails, and building materials such as door handles. It can be used for a resin molding directly touched by humans.
- the antibacterial composition of the present invention and the antibacterial resin molding obtained using the same have an antibacterial action against, for example, gram-negative bacteria, gram-positive bacteria, or fungi.
- Example 1 Production of antibacterial composition
- 1 kg of eucommia oil residue (including eucommia seeds and pericarp) is placed in a net bag (2 mm square bag of nylon mesh), and a slaughter layer (about 5 cm from the ground) of a broad-leaved forest (such as camphor tree, shii, tab) Buried in depth) and left for 2 months.
- a broad-leaved forest such as camphor tree, shii, tab
- this crude product was washed with water under conditions of a discharge pressure of 0.2 MPa to 0.9 MPa and a discharge water amount of 370 L / hour to obtain a eucommia-derived biopolymer.
- the yield of this biopolymer was 0.3 kg, and the yield was about 30%.
- the working time required to obtain the eucommia-derived biopolymer from the roughly purified product was about 1 hour.
- the eucommia-derived biopolymer obtained in this example was used as an antibacterial composition without adding other additives.
- Example 2 Production of antibacterial composition 2
- 10 g of the antibacterial composition (eucommia-derived biopolymer) obtained in Example 1 was added to 1 L of toluene and stirred to recover the toluene-soluble part.
- the purified elastomer was obtained by distilling off the toluene in the obtained toluene-soluble part.
- the purified elastomer obtained in this example was used as an antibacterial composition without adding other additives.
- Example 3 Antibacterial evaluation of antibacterial composition
- the antibacterial composition obtained in Example 1 was masticated with an open roll, and the obtained masticated material was molded by hot pressing to prepare a test piece of JIS Z2801 standard.
- test piece About the obtained test piece, according to JIS Z2801 (antibacterial processed product / antibacterial test method / antibacterial effect), the initial stage (test start) of Escherichia coli, Staphylococcus aureus, and black skin mold Time) and the viable count after 24 hours. Similarly to this, the number of viable bacteria at the initial stage and after 24 hours was measured for each inoculum when polyethylene as a general-purpose resin was used as a test piece as a control. Furthermore, each antibacterial activity value was calculated according to JIS Z2801.
- the antibacterial composition obtained in Example 1 has an antibacterial activity value significantly higher than 2.0, which is considered effective for any inoculum, It can be seen that it had excellent antibacterial performance against both S. aureus and black skin mold.
- Example 4 Antibacterial evaluation of antibacterial composition 2
- a test piece was prepared in the same manner as in Example 3 except that the antibacterial composition 2 obtained in Example 2 was used instead of the antibacterial composition obtained in Example 1, and the test piece was in accordance with JIS Z2801.
- the number of viable bacteria at the initial stage (at the start of the test) and after 24 hours for each inoculum was measured.
- the number of viable bacteria after 24 hours by the control was measured.
- each antibacterial activity value was calculated according to JIS Z2801.
- the antibacterial activity value for Escherichia coli and Staphylococcus aureus was significantly higher than 2.0, which is considered effective. Although antibacterial activity was slightly low against black skin mold, it showed excellent antibacterial performance compared to the control.
- the antibacterial composition of the present invention is useful for the production of various industrial products by taking advantage of the properties of the biopolymer derived from eucommia as an active ingredient as an elastomer.
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Abstract
Description
トチュウを生物学的に腐朽させてトチュウ分解産物を得る工程、および
該トチュウ分解産物を洗浄する工程
を包含する、方法である。
1kgのトチュウ由来の搾油残物(トチュウ種子および果皮を含む)を網袋(ナイロンメッシュ2mm角の袋)に入れ、広葉樹林(クスノキ、シイ、タブなど)の腐葉層(地上から約5cmの深さ)に埋没させ、2カ月間放置した。網袋の中のトチュウが腐朽していることを手で触って容易に崩壊することにより確認した後、水洗し、トチュウゴム粗精製物を得た。
実施例1で得られた抗菌性組成物(トチュウ由来のバイオポリマー)10gを1Lのトルエンに添加し、撹拌してトルエン可溶部を回収した。得られたトルエン可溶部のトルエンを留去させることにより、精製エラストマーを得た。
実施例1で得られた抗菌性組成物を、オープンロールで素練を行い、得られた素練物を熱プレスにより成型し、JIS Z2801規格の試験片を作成した。
実施例1で得られた抗菌性組成物の代わりに、実施例2で得られた抗菌性組成物2を用いたこと以外は、実施例3と同様にして試験片を作成し、JIS Z2801に従う各接種菌に対する初期(試験開始時)および24時間後の生菌数を測定した。これと同様にして、コントロールによる24時間後の生菌数を測定した。さらに、同JIS Z2801に従ってそれぞれの抗菌活性値を算出した。
Claims (18)
- トチュウ由来のバイオポリマーを有効成分として含有する、抗菌性組成物。
- 前記トチュウ由来のバイオポリマーが、1×103から5×106の重量平均分子量を有する、請求項1に記載の抗菌性組成物。
- 前記トチュウ由来のバイオポリマーが、トチュウを生物学的に腐朽させてトチュウ分解産物を得、かつ該トチュウ分解産物を洗浄することにより得られたエラストマーである、請求項1または2に記載の抗菌性組成物。
- 前記洗浄が高圧水洗である、請求項3に記載の抗菌性組成物。
- 前記トチュウ由来のバイオポリマーが、前記エラストマーを有機溶媒で抽出した溶媒改質物である、請求項3または4に記載の抗菌性組成物。
- 前記トチュウ由来のバイオポリマーが、前記エラストマーまたは前記溶媒改質物を、75℃から130℃にて5分以上加熱して得られた加熱改質物である、請求項3から5のいずれかに記載の抗菌性組成物。
- 前記トチュウが、トチュウの種子、果皮、葉、樹皮、および根からなる群から選択される少なくとも1つの部位である、請求項3から6のいずれかに記載の抗菌性組成物。
- グラム陰性菌、グラム陽性菌または真菌に対する抗菌作用を有する、請求項1から7のいずれかに記載の抗菌性組成物。
- 抗菌性組成物の製造方法であって、
トチュウを生物学的に腐朽させてトチュウ分解産物を得る工程、および
該トチュウ分解産物を洗浄する工程
を包含する、方法。 - 前記洗浄が高圧水洗である、請求項9に記載の方法。
- さらに、前記トチュウ分解産物を洗浄して得たエラストマーを、有機溶媒で抽出して溶媒改質物を得る工程を包含する、請求項9または10に記載の方法。
- さらに、前記トチュウ分解産物を洗浄して得たエラストマーまたは前記溶媒改質物を、75℃から130℃にて5分以上加熱して加熱改質物を得る工程を包含する、請求項9から11のいずれかに記載の方法。
- 前記トチュウが、トチュウの種子、果皮、葉、樹皮、および根からなる群から選択される少なくとも1つの部位である、請求項9から12のいずれかに記載の方法。
- 抗菌性組成物の製造方法であって、トチュウを有機溶媒で抽出してトチュウ抽出物を得る工程を包含する、方法。
- 前記有機溶媒が、トルエン、クロロホルム、ヘキサン、石油エーテル、石油ベンジンおよびテトラヒドロフランからなる群から選択される少なくとも1種の溶媒である、請求項14に記載の方法。
- さらに前記トチュウ抽出物を75℃から130℃にて5分以上加熱して加熱改質物を得る工程を包含する、請求項14または15に記載の方法。
- 前記トチュウが、トチュウの種子、果皮、葉、樹皮、および根からなる群から選択される少なくとも1つの部位である、請求項14から16のいずれかに記載の方法。
- 請求項1から8のいずれかに記載の抗菌性組成物を用いて成形された抗菌性を有する樹脂成形体。
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EP14804529.7A EP3005873A4 (en) | 2013-05-28 | 2014-03-24 | ANTIBACTERIAL COMPOSITION AND METHOD FOR THE PRODUCTION THEREOF |
CN201480028907.7A CN105228454B (zh) | 2013-05-28 | 2014-03-24 | 抗菌组合物及其制造方法 |
US14/891,784 US20160120189A1 (en) | 2013-05-28 | 2014-03-24 | Antibacterial composition and method for producing same |
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JP2013112415A JP6099481B2 (ja) | 2013-05-28 | 2013-05-28 | 抗菌性組成物およびその製造方法 |
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US (1) | US20160120189A1 (ja) |
EP (1) | EP3005873A4 (ja) |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019208028A1 (ja) * | 2018-04-27 | 2019-10-31 | 日立造船株式会社 | 樹脂成形用組成物およびそれを用いた樹脂成形体 |
CN113278301A (zh) * | 2021-05-21 | 2021-08-20 | 江西省林业科学院 | 一种樟树精油提取后剩余物的可降解容器及其制备方法和应用 |
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JPH11236037A (ja) | 1998-02-20 | 1999-08-31 | Toyo Seikan Kaisha Ltd | 多層プラスチック容器 |
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JP5030377B2 (ja) * | 2004-11-08 | 2012-09-19 | ニッタ株式会社 | 変性ラテックス、及び天然ポリイソプレノイド水素添加物又はその変性体含有製品 |
JP4748933B2 (ja) * | 2003-12-08 | 2011-08-17 | ニッタ株式会社 | ゴム状弾性体とその製造法 |
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WO2019208028A1 (ja) * | 2018-04-27 | 2019-10-31 | 日立造船株式会社 | 樹脂成形用組成物およびそれを用いた樹脂成形体 |
CN113278301A (zh) * | 2021-05-21 | 2021-08-20 | 江西省林业科学院 | 一种樟树精油提取后剩余物的可降解容器及其制备方法和应用 |
Also Published As
Publication number | Publication date |
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EP3005873A4 (en) | 2016-12-21 |
CN105228454B (zh) | 2018-11-16 |
JP6099481B2 (ja) | 2017-03-22 |
US20160120189A1 (en) | 2016-05-05 |
EP3005873A1 (en) | 2016-04-13 |
CN105228454A (zh) | 2016-01-06 |
JP2014231490A (ja) | 2014-12-11 |
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