WO2022158452A1 - 再生スチレン系樹脂組成物及び成形体 - Google Patents
再生スチレン系樹脂組成物及び成形体 Download PDFInfo
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- WO2022158452A1 WO2022158452A1 PCT/JP2022/001625 JP2022001625W WO2022158452A1 WO 2022158452 A1 WO2022158452 A1 WO 2022158452A1 JP 2022001625 W JP2022001625 W JP 2022001625W WO 2022158452 A1 WO2022158452 A1 WO 2022158452A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—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 aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/06—Polystyrene
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—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 aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/08—Copolymers of styrene
- C08L25/10—Copolymers of styrene with conjugated dienes
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/04—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to rubbers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—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 aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/08—Copolymers of styrene
- C08L25/12—Copolymers of styrene with unsaturated nitriles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Definitions
- An object of the present invention is to provide a recycled styrene-based resin composition having a high content of recycled materials, excellent impact resistance, excellent creep resistance in a thin wall thickness, and safety conforming to UL94HB in combustibility, and the resin.
- An object of the present invention is to provide a molded article made of the composition.
- the (B) styrene-based virgin material in the present invention is unused styrene-based resin that has not undergone the production process of styrene-based resin products.
- One or two or more of the styrene-based resins described later may be used at the same time. Among them, polystyrene and rubber-modified polystyrene are particularly preferred.
- the styrene-based resin in the present invention is obtained by polymerizing an aromatic vinyl compound, and may be rubber-modified by adding a conjugated diene-based rubber-like polymer as necessary.
- a bulk polymerization method a bulk/suspension two-stage polymerization method, a solution polymerization method, and the like are known, and the polymer produced by any method can be used.
- aromatic vinyl compound monomers include known ones such as styrene, ⁇ -methylstyrene, o-methylstyrene, m-methylstyrene and p-methylstyrene, with styrene being preferred.
- Conjugated diene-based rubber-like polymers used for rubber modification of styrene-based resins include polybutadiene, random or block copolymers of styrene-butadiene, polyisoprene, polychloroprene, random, block or graft copolymers of styrene-isoprene, Examples thereof include ethylene-propylene rubber and ethylene-propylene-diene rubber, and polybutadiene and random, block or graft copolymers of styrene-butadiene are particularly preferred. Also, these may be partially hydrogenated.
- styrenic resins examples include polystyrene (GPPS), rubber-modified polystyrene (HIPS), ABS resin (acrylonitrile-butadiene-styrene copolymer), AS resin (acrylonitrile-styrene copolymer), MS resin (methyl methacrylate-styrene copolymer), AAS resin (acrylonitrile-acrylic rubber-styrene copolymer), AES resin (acrylonitrile-ethylene propylene-styrene copolymer), and the like.
- GPPS polystyrene
- HIPS rubber-modified polystyrene
- ABS resin acrylonitrile-butadiene-styrene copolymer
- AS resin acrylonitrile-styrene copolymer
- MS resin methyl methacrylate-styrene copolymer
- AAS resin acrylonitrile-acrylic rubber-styrene cop
- the styrene resin in the present invention includes additives other than styrene resins, such as flame retardants, dyes and pigments, anti-coloring agents, lubricants, antioxidants, anti-aging agents, light stabilizers, antistatic agents, fillers, crystallization
- additives other than styrene resins such as flame retardants, dyes and pigments, anti-coloring agents, lubricants, antioxidants, anti-aging agents, light stabilizers, antistatic agents, fillers, crystallization
- a nucleating agent, a compatibilizer, a coloring agent such as titanium oxide or carbon black, and the like may be included.
- the mixing ratio of (A) recycled styrene-based material and (B) virgin styrene-based material is, when the total amount of both is 100% by mass, (A) recycled styrene-based material is 40% by mass or more and 90% by mass or less. Therefore, (B) the styrene-based virgin material is 10% by mass or more and 60% by mass or less.
- (A) styrene-based recycled material is 45% by mass or more and 85% by mass or less
- (B) styrene-based virgin material is 15% by mass or more and 55% by mass or less, and more preferably (A) styrene-based recycled material is 50% by mass or more and 80% by mass or less, and (B) the styrene-based virgin material is 20% by mass or more and 50% by mass or less.
- a recycled styrene-based resin composition having a high content of recycled materials and good combustibility at a thin thickness can be obtained.
- the content of the rubber-like polymer in the recycled styrene-based resin composition is 5.0% by mass or more and 7.0% by mass or less. It is more preferably 5.0% by mass or more and 6.8% by mass or less, and still more preferably 5.2% by mass or more and 6.5% by mass or less. Within such a range, a recycled styrene resin composition having good impact resistance and creep resistance can be obtained.
- the toluene-insoluble matter in the regenerated styrene-based resin composition of the present invention includes rubber-like polymer phases contained in the styrene-based resin and different resins that are sparingly soluble or insoluble in toluene.
- the toluene-insoluble content of the resin composition is 21% by mass or less. If the toluene-insoluble content is 21% by mass or less, a regenerated styrene resin composition having good combustibility at a thin thickness can be obtained.
- the bending strength of the recycled styrene resin composition required in accordance with JIS K7171 is 47 MPa or more. Within this range, it is possible to obtain a recycled styrene-based resin composition having good creep resistance in a thin wall thickness.
- the chlorine (Cl) content in the recycled styrene resin composition determined by the fluorescent X-ray method is 900 ppm or less
- the bromine (Br) content is 900 ppm or less
- the sum of (Cl) content and bromine (Br) content is preferably 1500 ppm or less. Within this range, generation of harmful gas is suppressed during combustion, and the material is generally treated as a non-halogen material. More preferably, both chlorine (Cl) and bromine (Br) are 700 ppm or less, and more preferably both chlorine (Cl) and bromine (Br) are 500 ppm or less.
- the total content of iron (Fe) and copper (Cu) in the recycled styrene-based resin composition determined by the fluorescent X-ray method is preferably 150 ppm or less.
- the regenerated styrene resin composition of the present invention may contain other additives within a range that does not impair the effects of the present invention.
- additives for example, phenol-based antioxidants, phosphorus-based antioxidants, metal deactivators, acid catchers, ultraviolet absorbers, stabilizers such as light stabilizers, fatty acid-based lubricants, aliphatic amide-based lubricants, metallic soap-based lubricants, etc.
- lubricants fillers such as talc, mica, silica, reinforcing agents such as glass fibers, coloring agents such as pigments and dyes, flame retardants such as brominated flame retardants, phosphorus flame retardants, nitrogen flame retardants, antimony trioxide Flame retardant aids such as polytetrafluoroethylene (PTFE) and other anti-dripping agents, nonionic surfactants, antistatic agents such as cationic surfactants, oxazoline compatibilizers, maleic anhydride compatibilizers and compatibilizers such as elastomeric compatibilizers.
- PTFE polytetrafluoroethylene
- a known technique can be applied to the molding method of the molded body made of the recycled styrene resin composition of the present invention.
- there are methods such as injection molding, press molding, extrusion molding, and blow molding.
- B-1 Rubber-modified polystyrene reduced viscosity ( ⁇ sp/C) 0.75 dl/g, rubber-like polymer content 9.2% by mass
- B-2 Polystyrene reduced viscosity ( ⁇ sp/C) 0.70dl/g
- B-3 Rubber-modified polystyrene reduced viscosity ( ⁇ sp/C) 0.72 dl/g, rubber-like polymer content 5.1% by mass
- the recycled styrene resin composition of the present invention has excellent impact resistance while boasting a high content of recycled materials. It turns out that it has a gender.
- the content (measured value) of the rubber-like polymer in the recycled styrene resin composition shown in Table 1 is calculated from the content (measured value) of each of the recycled styrene material and the virgin styrene material. There are cases where the calculated values do not match.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
Description
ゴム状重合体含有量が5.0質量%以上7.0質量%以下であり、トルエン不溶分が21質量%以下であり、JIS K7171に準拠して求められる曲げ強さが47MPa以上であることを特徴とする再生スチレン系樹脂組成物。
スチレン系樹脂或いは樹脂組成物をクロロホルムに溶解させ、一定量の一塩化ヨウ素/四塩化炭素溶液を加え暗所に約1時間放置後、15質量%のヨウ化カリウム溶液と純水50mlを加え、過剰の一塩化ヨウ素を0.1Nチオ硫酸ナトリウム/エタノール水溶液で滴定し、付加した一塩化ヨウ素量から算出した。
スチレン系樹脂1gにメチルエチルケトン17.5mlとアセトン17.5mlの混合溶媒を加え、温度25℃で2時間振とう溶解した後、遠心分離で不溶分を沈降させ、デカンテーションにより上澄み液を取り出し、250mlのメタノールを加えて樹脂分を析出させ、不溶分を濾過乾燥する。同操作で得られた樹脂分をトルエンに溶解してポリマー濃度0.4%(質量/体積)の試料溶液を作製した。この試料溶液、及び純トルエンを30℃の恒温でウベローデ型粘度計により溶液流下秒数を測定して、下式にて算出した。
t0:純トルエン流下秒数
t1:試料溶液流下秒数
C:ポリマー濃度
A-1:家電から回収されたゴム変性ポリスチレン
ポストコンシューマー材含有率100質量%、ゴム状重合体含有量5.7質量%
A-2:家電から回収されたゴム変性ポリスチレン
ポストコンシューマー材含有率100質量%、ゴム状重合体含有量6.2質量%
A-3:雑貨から回収されたゴム変性ポリスチレン
ポストコンシューマー材含有率100質量%、ゴム状重合体含有量3.3質量%
B-1:ゴム変性ポリスチレン
還元粘度(ηsp/C)0.75dl/g、ゴム状重合体含有量9.2質量%
B-2:ポリスチレン
還元粘度(ηsp/C)0.70dl/g
B-3:ゴム変性ポリスチレン
還元粘度(ηsp/C)0.72dl/g、ゴム状重合体含有量5.1質量%
表1に示す配合量の(A)スチレン系リサイクル材と(B)スチレン系バージン材の各原料を混合機に投入して予備ブレンドを行い、ブレンド物を二軸押出機(東芝株式会社製「TEM26SS:14バレル」)に定量フィーダーを用いて供給し、シリンダー温度220℃、総供給量30kg/時間、スクリュー回転数300rpmの押出条件で溶融混練して押し出した。押し出されたストランドは水冷してからペレタイザーへ導き、樹脂組成物のペレットを得た。ただし、比較例1、参考例は原料のペレットをそのまま用いた。得られた樹脂組成物を以下の方法で評価した結果を表1に示す。
樹脂組成物をトルエンに2.5質量%の割合で加え、25℃で2時間振とう溶解した後、遠心分離(回転数10000rpm以上14000rpm以下、分離時間30分)で不溶分(ゲル分)を沈降させ、デカンテーションにより上澄み液を除去してゲルを得る。次に、この膨潤ゲルを100℃で2時間予備乾燥した後、120℃の真空乾燥機で1時間乾燥する。デシケータで常温まで冷却し精秤し下式にて算出した。
a:遠心沈降管重量
b:乾燥ゲル+遠心沈降管重量
S:試料重量
樹脂組成物のペレットを温度70℃×3時間で加熱乾燥後、射出成形機(日本製鋼所(株)製「J100E-P」)を用いて、シリンダー温度220℃、金型温度45℃にて、JIS K7139に記載のA型試験片(ダンベル)を成形した。上記ダンベル片の中央部より切り出した試験片を用いて、JIS K7171に準拠して曲げ強さを測定した。
耐衝撃性はシャルピー衝撃値により評価した。樹脂組成物のペレットを温度70℃×3時間で加熱乾燥後、射出成形機(日本製鋼所(株)製「J100E-P」)を用いて、シリンダー温度220℃、金型温度45℃にて、JIS K 7139に記載のA型試験片(ダンベル)を成形した。上記ダンベル片の中央部より切り出し、切削でノッチ(タイプA、r=0.25mm)を入れた試験片を用いて、JIS K 7111-1に準拠して耐衝撃性を測定した。
樹脂組成物のペレットを温度70℃×3時間で加熱乾燥後、射出成形機(日本製鋼所(株)製、「J100E-P」)を用いて、シリンダー温度200℃、金型温度45℃にて、長さ127mm×幅12.7mm×厚さ0.8mmの燃焼用試験片を成形した。米国アンダーライターズ・ラボラトリーズ社のサブジェクト94号の水平燃焼試験方法(UL94)に基づき、燃焼試験を行った。この試験方法でHBに満たなかったものは「NG」とした。
樹脂組成物のペレットを温度70℃×3時間で加熱乾燥後、射出成形機(日本製鋼所(株)製「J100E-P」)を用いて、シリンダー温度240℃、金型温度45℃にて、長さ127mm×幅127mm×厚さ0.8mmの成形体を得た。得られた成形体を短辺が流れ方向と平行になるように、長さ127mm×幅12.7mm×厚さ0.8mmに切り出して試験片を得た。得られた試験片を温度60℃×24時間でアニール処理をした後、50℃雰囲気下で両端支持(支点間距離30mm)の中央に荷重を加えた。マイクロゲージで初期たわみ量と、1時間放置後のたわみ量を計測し、初期値との差を測定した。数値の小さい方が耐クリープ性に優れ、5.0mm以下を「A」、5.0mmを超えるものを「B」とした。
上記耐クリープ性の試験と同様に成形して得られた長さ127mm×幅127mm×厚さ0.8mmの成形体を、蛍光X線分析装置((株)リガク製「EDXL300」)を用いて分析し、各元素を定量することで含有量を求めた。表中の「N.D.」は不検出を意味する。
Claims (6)
- 少なくとも(A)スチレン系リサイクル材と(B)スチレン系バージン材とを含有し、(A)スチレン系リサイクル材と(B)スチレン系バージン材の合計量を100質量%とした時、(A)スチレン系リサイクル材の含有量が40質量%以上90質量%以下、(B)スチレン系バージン材の含有量が10質量%以上60質量%以下である再生スチレン系樹脂組成物であって、
ゴム状重合体含有量が5.0質量%以上7.0質量%以下であり、トルエン不溶分が21質量%以下であり、JIS K7171に準拠して求められる曲げ強さが47MPa以上であることを特徴とする再生スチレン系樹脂組成物。 - 前記(A)スチレン系リサイクル材がポストコンシューマー材であることを特徴とする請求項1に記載の再生スチレン系樹脂組成物。
- 蛍光X線法により求められる塩素(Cl)含有量が900ppm以下、臭素(Br)含有量が900ppm以下であり、かつ、前記塩素(Cl)含有量と前記臭素(Br)含有量の合計が1500ppm以下であることを特徴とする請求項1または2に記載の再生スチレン系樹脂組成物。
- 蛍光X線法により求められる鉄(Fe)と銅(Cu)の含有量の合計が150ppm以下であることを特徴とする請求項1乃至3のいずれか一項に記載の再生スチレン系樹脂組成物。
- 請求項1乃至4のいずれか一項に記載の再生スチレン系樹脂組成物からなることを特徴とする成形体。
- トナーカートリッジ用容器であることを特徴とする請求項5に記載の成形体。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202280008985.5A CN116670208A (zh) | 2021-01-20 | 2022-01-18 | 再生苯乙烯系树脂组合物和成型体 |
| JP2022576691A JP7785702B2 (ja) | 2021-01-20 | 2022-01-18 | 再生スチレン系樹脂組成物及び成形体 |
| US18/271,385 US20240301190A1 (en) | 2021-01-20 | 2022-01-18 | Regenerated-styrene-based resin composition and molded object |
| EP22742574.1A EP4282916B1 (en) | 2021-01-20 | 2022-01-18 | Regenerated-styrene-based resin composition and molded object |
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| JP2021006871 | 2021-01-20 | ||
| JP2021-006871 | 2021-01-20 |
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| WO2022158452A1 true WO2022158452A1 (ja) | 2022-07-28 |
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| US (1) | US20240301190A1 (ja) |
| EP (1) | EP4282916B1 (ja) |
| JP (1) | JP7785702B2 (ja) |
| CN (1) | CN116670208A (ja) |
| WO (1) | WO2022158452A1 (ja) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2024080342A1 (ja) * | 2022-10-12 | 2024-04-18 | ||
| WO2024204320A1 (ja) * | 2023-03-31 | 2024-10-03 | 東洋スチレン株式会社 | 再生スチレン系樹脂組成物およびそれからなる成形体 |
| WO2025099360A1 (en) * | 2023-11-06 | 2025-05-15 | Teknologian Tutkimuskeskus Vtt Oy | Food contact plastic composition with recycled food contact high-impact polystyrene content and method for producing thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| EP2354168A1 (en) * | 2010-02-03 | 2011-08-10 | Total Petrochemicals Research Feluy | Styrene based compositions made with a minor part of metal free recycled styrene polymer |
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- 2022-01-18 WO PCT/JP2022/001625 patent/WO2022158452A1/ja not_active Ceased
- 2022-01-18 JP JP2022576691A patent/JP7785702B2/ja active Active
- 2022-01-18 EP EP22742574.1A patent/EP4282916B1/en active Active
- 2022-01-18 CN CN202280008985.5A patent/CN116670208A/zh active Pending
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| JP2001098097A (ja) * | 1999-09-29 | 2001-04-10 | Nippon Zeon Co Ltd | スチレン樹脂組成物 |
| JP2001254024A (ja) * | 2000-03-09 | 2001-09-18 | Techno Polymer Co Ltd | 再生プラスチック材料の製造方法 |
| JP2003231773A (ja) * | 2002-02-12 | 2003-08-19 | Sony Corp | 使用済み樹脂廃材の再資源化方法と同再生樹脂 |
| JP2004137388A (ja) * | 2002-10-18 | 2004-05-13 | Idemitsu Petrochem Co Ltd | スチレン系難燃樹脂組成物及びその製造方法 |
| JP2008038026A (ja) * | 2006-08-07 | 2008-02-21 | Umg Abs Ltd | 改質材、これを用いた成形品の製造方法および廃スチレン系樹脂の再生方法 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2024080342A1 (ja) * | 2022-10-12 | 2024-04-18 | ||
| JP7580011B2 (ja) | 2022-10-12 | 2024-11-08 | Psジャパン株式会社 | 再生スチレン系樹脂組成物、及びその成形体、並びにカートリッジ |
| JP2025010625A (ja) * | 2022-10-12 | 2025-01-22 | Psジャパン株式会社 | 再生スチレン系樹脂組成物、及びその成形体、並びにカートリッジ |
| JP7656140B2 (ja) | 2022-10-12 | 2025-04-02 | Psジャパン株式会社 | 再生スチレン系樹脂組成物、及びその成形体、並びにカートリッジ |
| EP4603538A4 (en) * | 2022-10-12 | 2026-01-14 | Ps Japan Corp | RECYCLED STYRENE-BASED RESIN COMPOSITION, ASSOCIATED MOLDED ITEM, AND CARTRIDGE |
| WO2024204320A1 (ja) * | 2023-03-31 | 2024-10-03 | 東洋スチレン株式会社 | 再生スチレン系樹脂組成物およびそれからなる成形体 |
| WO2025099360A1 (en) * | 2023-11-06 | 2025-05-15 | Teknologian Tutkimuskeskus Vtt Oy | Food contact plastic composition with recycled food contact high-impact polystyrene content and method for producing thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4282916A4 (en) | 2024-11-27 |
| EP4282916B1 (en) | 2025-11-05 |
| EP4282916A1 (en) | 2023-11-29 |
| JP7785702B2 (ja) | 2025-12-15 |
| US20240301190A1 (en) | 2024-09-12 |
| CN116670208A (zh) | 2023-08-29 |
| JPWO2022158452A1 (ja) | 2022-07-28 |
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