JP2001019792A - Method for separating flame retardants from flame- retardant thermoplastic resin - Google Patents
Method for separating flame retardants from flame- retardant thermoplastic resinInfo
- Publication number
- JP2001019792A JP2001019792A JP11190173A JP19017399A JP2001019792A JP 2001019792 A JP2001019792 A JP 2001019792A JP 11190173 A JP11190173 A JP 11190173A JP 19017399 A JP19017399 A JP 19017399A JP 2001019792 A JP2001019792 A JP 2001019792A
- Authority
- JP
- Japan
- Prior art keywords
- flame
- flame retardant
- resin
- separating
- carbon dioxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
Landscapes
- Extraction Or Liquid Replacement (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はハロゲン系難燃剤を
含む熱可塑性樹脂組成物から難燃剤を分離し、樹脂及び
難燃剤を分離回収する方法に関する。The present invention relates to a method for separating a flame retardant from a thermoplastic resin composition containing a halogen-based flame retardant, and separating and recovering the resin and the flame retardant.
【０００２】[0002]
【従来の技術】近年、家電製品および事務機器の多くは
火災に対する安全対策によりハウジング等に使用される
プラスチックに難燃剤を混合成形し難燃化の対策がなさ
れている。これらに混合される難燃剤の代表例としてハ
ロゲン系難燃剤を挙げることが出来る。2. Description of the Related Art In recent years, many home electric appliances and office equipment have been provided with a flame retardant by mixing and molding a flame retardant into a plastic used for a housing or the like for safety measures against fire. Representative examples of the flame retardant mixed with these include a halogen-based flame retardant.
【０００３】各種用途に使用後、廃棄された難燃プラス
チックを焼却する場合には、その燃焼により有害ガスの
発生および廃ガス処理等の問題が懸念されるため従来は
殆ど埋め立て処分されるのが通常であった。しかし、近
年廃棄される製品の量も増加の一途をたどっており埋め
立てする最終処分場の不足あるいは埋め立て地周辺の環
境等が問題視される様になった。[0003] When incinerating discarded flame-retardant plastics after use for various purposes, there is a concern about the generation of harmful gases and the disposal of waste gases due to the burning, so that they are almost always landfilled. Was normal. However, in recent years, the amount of products to be discarded has been steadily increasing, and shortages of final disposal sites for landfills and the environment around the landfill site have come to be regarded as problems.
【０００４】このような状況を背景として、法律により
テレビ、冷蔵庫、エアコン、洗濯機の４家電は廃棄の際
にリサイクルすることが義務づけられた。このため、廃
棄された難燃プラスチックを何らかの方法でリサイクル
しようとする試みが数多くなされているが殆どがサーマ
ル及びケミカルリサイクル（例えば、分解油回収とその
化学原料あるいは燃料への使用）が中心となっており、
樹脂としてマテリアルリサイクルをして環境汚染の防止
と資源の有効活用を計ることが求められている。難燃樹
脂をマテリアルリサイクルする方法としては、特開平７
−２１４０２８に有機溶媒を用いてポリスチレンを回収
する方法が開示されているが、操作性の簡略化等の課題
を残している。また、超臨界状態の流体を利用した樹脂
廃棄物の処理方法としては、特開平１０−２３７２１５
が開示されているが、流体に水等を使用し、処理温度を
高温にし、樹脂成分をモノマー単位まで分解するケミカ
ルリサイクルの方法である。[0004] Against this background, the law requires that four home appliances, a television, a refrigerator, an air conditioner, and a washing machine, be recycled at the time of disposal. For this reason, many attempts have been made to recycle discarded flame-retardant plastics by some method, but most of them are mainly thermal and chemical recycling (for example, recovery of cracked oil and its use as a chemical raw material or fuel). And
There is a demand for material recycling as a resin to prevent environmental pollution and effectively use resources. Japanese Patent Application Laid-Open No. Hei 7
JP-A-214028 discloses a method for recovering polystyrene by using an organic solvent, but has problems such as simplification of operability. Japanese Patent Application Laid-Open No. 10-237215 discloses a method of treating resin waste using a fluid in a supercritical state.
Is a chemical recycling method that uses water or the like as a fluid, raises the processing temperature, and decomposes resin components into monomer units.
【０００５】[0005]
【本発明が解決しようとする課題】本発明は上記事情に
鑑みなされたもので、従来そのまま埋め立て廃棄されて
ることが多く、廃棄された難燃樹脂より簡便な方法で難
燃剤を取り除き、一般樹脂としてマテリアルリサイクル
可能な有用物質を得るため、難燃剤を抽出分離する方法
を提供することを目的とする。DISCLOSURE OF THE INVENTION The present invention has been made in view of the above circumstances, and in the past, it has often been disposed of as landfill, and the flame retardant is removed by a simpler method than the disposed flame retardant resin. It is an object of the present invention to provide a method for extracting and separating a flame retardant in order to obtain a useful substance which can be recycled as a material.
【０００６】[0006]
【課題を解決するための手段】本発明の処理方法は、熱
可塑性樹脂及びハロゲン系難燃剤より構成された、難燃
樹脂組成物に反応促進剤を含む超臨界状態の炭酸ガスを
連続的に接触させ、ハロゲン系難燃剤を抽出分離するこ
とを特徴とするものである。According to the present invention, there is provided a treatment method comprising the steps of continuously producing supercritical carbon dioxide gas containing a reaction accelerator in a flame-retardant resin composition comprising a thermoplastic resin and a halogen-based flame retardant. It is characterized by contacting and extracting and separating a halogen-based flame retardant.
【０００７】すなわち本発明は、熱可塑性樹脂及びハロ
ゲン系難燃剤より構成された、難燃樹脂組成物に超臨界
状態の炭酸ガスを連続的に接触させ、ハロゲン系難燃剤
を抽出分離することを特徴とする難燃剤分離の方法であ
る。以下に本発明を詳細に説明する。本発明の熱可塑性
樹脂とは汎用プラスチック、特殊な機能性を有するエン
ジニアリング樹脂、その他熱可塑性の樹脂なら何でもよ
い。例えばポリエチレン、ポリプロピレン、ポリスチレ
ン、ポリ塩化ビニル、ポリメチルメタクリレート、ＡＢ
Ｓ樹脂、ＡＳ樹脂、ポリアセタール、ポリアミド、ポリ
エステル、フッ素樹脂、ポリアミドイミド、ポリ塩化ビ
ニリデン、ポリカーボネート、ポリサルホン、があげら
れるがこれに限定する物ではない。またこれらの熱可塑
性樹脂の混合物、状態が廃プラスチックであってもかま
わない。本発明のスチレン樹脂とは、ポリスチレン、Ａ
Ｓ、ＡＢＳ、ＭＢＳ等、スチレンの重合体及びスチレン
と共重合可能な他のモノマーとの共重合体であり、それ
らにゴムをグラフト重合したものおよびゴムを混合した
ものも入る。That is, the present invention provides a method for continuously contacting a supercritical carbon dioxide gas with a flame-retardant resin composition composed of a thermoplastic resin and a halogen-based flame retardant to extract and separate the halogen-based flame retardant. This is a method for separating flame retardants. Hereinafter, the present invention will be described in detail. The thermoplastic resin of the present invention may be a general-purpose plastic, an engineering resin having a special function, or any other thermoplastic resin. For example, polyethylene, polypropylene, polystyrene, polyvinyl chloride, polymethyl methacrylate, AB
Examples include, but are not limited to, S resin, AS resin, polyacetal, polyamide, polyester, fluororesin, polyamideimide, polyvinylidene chloride, polycarbonate, and polysulfone. Further, the mixture and the state of these thermoplastic resins may be waste plastic. The styrene resin of the present invention includes polystyrene, A
S, ABS, MBS and other styrene polymers and copolymers with other monomers copolymerizable with styrene, including those obtained by graft polymerization of rubber and those obtained by mixing rubber.
【０００８】本発明で使用される難燃剤はハロゲン系難
燃剤である。ハロゲン系難燃剤には臭素系難燃剤、塩素
系難燃剤等があり、臭素系難燃剤の具体的代表例として
はデカブロモジフエニルエーテル、ヘキサブロモベンゼ
ン、ヘキサブロモシクロドデカン、テトラブロモビスフ
ェノールＡ、テトラブロモビスフェノールＡ−テトラブ
ロモビスフェノールＡ・ジグリシジルエーテルコポリマ
ーが挙げられる。塩素系難燃剤の具体的代表例としては
塩素化パラフィン,パークロロシクロデカンがある。The flame retardant used in the present invention is a halogen-based flame retardant. Halogen-based flame retardants include brominated flame retardants, chlorine-based flame retardants, etc. Specific representative examples of brominated flame retardants are decabromodiphenyl ether, hexabromobenzene, hexabromocyclododecane, tetrabromobisphenol A, Tetrabromobisphenol A-tetrabromobisphenol A / diglycidyl ether copolymer is exemplified. Specific representative examples of chlorinated flame retardants include chlorinated paraffins and perchlorocyclodecane.
【０００９】本発明で使用される抽出媒体としては炭酸
ガスを使用する。炭酸ガスがその超臨界温度以上、超臨
界圧以上の超臨界状態となっていることが重要である。
超臨界抽出に使用できる抽剤としては炭酸ガスの他、エ
タン、プロパン、エチレン、笑気ガス、フレオン１３等
が挙げられるが、炭酸ガスが最適である。本発明では反
応促進剤を併用することが可能であり、抽出効率の向上
や操作条件を平易にするためにも反応促進剤を併用する
ことは望ましい。反応促進剤としては極性を示す、水、
アルコール、アセトン等の有機溶剤から選択する事が出
来るがメタノールが最適である。メタノールの使用量は
炭酸ガスに対して２〜２０重量％の範囲で使用すること
が望ましい。[0009] As the extraction medium used in the present invention, carbon dioxide gas is used. It is important that the carbon dioxide gas is in a supercritical state above its supercritical temperature and supercritical pressure.
Examples of the extractant that can be used for the supercritical extraction include carbon dioxide, ethane, propane, ethylene, laughing gas, Freon 13 and the like, and carbon dioxide is most suitable. In the present invention, a reaction accelerator can be used in combination, and it is desirable to use a reaction accelerator in combination in order to improve the extraction efficiency and to simplify the operating conditions. Water, which shows polarity as a reaction accelerator
Although it can be selected from organic solvents such as alcohol and acetone, methanol is most suitable. It is desirable to use methanol in the range of 2 to 20% by weight based on carbon dioxide gas.
【００１０】本発明では難燃樹脂に超臨界炭酸ガスを連
続的に接触混合する。混合の方法としては、処理槽に難
燃樹脂を静置して超臨界状態の炭酸ガスを連続供給し、
抽出された難燃剤と炭酸ガスを連続的に抜き取る方法。
又は、溶融状態の難燃樹脂と超臨界炭酸ガスの両者を連
続的に供給し、連続的に抜き出す連続方法を取ることも
可能である。超臨界炭酸ガスの圧力は重要であり、圧力
が高いほど難燃剤の抽出は容易となるが１５〜５０ＭＰ
（メガパスカル）とすることが望ましい。抽出操作温度
は炭酸ガスの超臨界温度（３１℃）以上であればいい
が、難燃樹脂の供給方法により４０〜２３０℃の範囲か
ら選択することが可能である。In the present invention, supercritical carbon dioxide gas is continuously mixed with the flame-retardant resin in a contact manner. As a method of mixing, the flame-retardant resin is allowed to stand in the treatment tank and carbon dioxide gas in a supercritical state is continuously supplied,
A method of continuously extracting the extracted flame retardant and carbon dioxide gas.
Alternatively, it is also possible to adopt a continuous method in which both the flame-retardant resin in a molten state and the supercritical carbon dioxide gas are continuously supplied and continuously extracted. The pressure of the supercritical carbon dioxide gas is important, and the higher the pressure, the easier the extraction of the flame retardant is.
(Megapascal). The extraction operation temperature may be at least the supercritical temperature of carbon dioxide (31 ° C.), but can be selected from the range of 40 to 230 ° C. depending on the method of supplying the flame-retardant resin.
【００１１】以上のように本発明は、これまで困難とさ
れてきたハロゲン系難燃剤を含むスチレン樹脂組成物よ
り難燃剤を抽出分離し、スチレン樹脂成分をマテリアル
リサイクルする方法として有効な手段といえる。As described above, the present invention can be said to be an effective means as a method for extracting and separating a flame retardant from a styrene resin composition containing a halogen-based flame retardant, which has been regarded as difficult, and material recycling the styrene resin component. .
【００１２】[0012]
【発明の実施の形態】本発明を実施するための装置とし
ては、液体炭酸ガス供給ポンプ、ＳＵＳ製抽出槽（内径
２０ｍｍ、長さ２００ｍｍ）、保圧弁より構成された抽
出装置をもちいた。以下、本発明の実施の形態として、
実施例を挙げて本発明を具体的に説明する。しかし,本
発明はこれらの実施例に限定されるものではない。DESCRIPTION OF THE PREFERRED EMBODIMENTS As an apparatus for carrying out the present invention, an extraction apparatus comprising a liquid carbon dioxide supply pump, an SUS extraction tank (inner diameter 20 mm, length 200 mm), and a pressure-holding valve was used. Hereinafter, as an embodiment of the present invention,
The present invention will be described specifically with reference to examples. However, the present invention is not limited to these examples.
【００１３】なお、抽出率を評価する手段としての難燃
剤に含まれるブロム分に注目し、組成物中のブロム含有
量を測定した。ブロム定量は以下のように実施した。抽
出前後の樹脂成分の一部を燃焼フラスコにより純酸素中
で燃焼させ、発生するガスを燃焼フラスコに張って有る
水に吸収させ、酢酸及び酢酸ナトリウム混合溶液を添加
後、臭素イオンメーター（東亜電波（株）製；ＩＮ５５
Ｓ）で測定した。The brom content in the composition was measured by focusing on the bromo component contained in the flame retardant as a means for evaluating the extraction rate. Brom quantification was performed as follows. A part of the resin component before and after the extraction is burned in pure oxygen by a combustion flask, the generated gas is absorbed by water provided in the combustion flask, and a mixed solution of acetic acid and sodium acetate is added. IN55
It measured in S).
【００１４】[0014]
【実施例１】抽出槽に市販ＨＩＰＳ（合成ゴム１２．３
％入りポリスチレン；物性値：ビカット軟化点１０５
℃，ＭＩ（１０ｋｇ）５．５、引張強度２７０ｋｇ／ｃ
ｍ2、伸び４０％で例えば商標名エーアンドエムポリス
チレンＨ８１１７）３００ｇとデカブロモジフェニルエ
ーテル８０ｇを９５部及び市販難燃剤（東ソー（株）
製：デカブロモジフェニルエーテル）５部よりなる樹脂
組成物８ｇを充填し、バンドヒーターにより５０℃に加
熱した。次いで、液体炭酸ガス供給ポンプにてメタノー
ルを１３ｗｔ％含有する炭酸ガスを供給し、保圧弁によ
り抽出槽圧力を４０ＭＰに調整した。Example 1 A commercially available HIPS (synthetic rubber 12.3) was placed in an extraction tank.
% Polystyrene; physical property value: Vicat softening point 105
° C, MI (10 kg) 5.5, tensile strength 270 kg / c
m 2 , elongation 40%, for example, 300 g of A & M polystyrene H8117) and 95 parts of decabromodiphenyl ether 80 g, and a commercially available flame retardant (Tosoh Corporation)
(Decabromodiphenyl ether) (5 parts) and charged to 50 ° C. with a band heater. Next, carbon dioxide gas containing 13 wt% of methanol was supplied by a liquid carbon dioxide gas supply pump, and the pressure in the extraction tank was adjusted to 40MP by a pressure holding valve.
【００１５】引き続き、炭酸ガス供給量を５００ｇ／ｈ
ｒとして連続的に１時間供給し、保圧弁によりガス成分
は大気に放散しながら抽出操作を実施した。抽出終了
後、炭酸ガス供給を停止し、保圧弁を開放する事により
抽出槽を大気圧として、抽出された樹脂成分を回収し
た。抽出前後の樹脂成分の一部をとり、ブロム含有量を
測定したところ、抽出前３．８ｗｔ％、抽出後１．０％
を示し、難燃剤が抽出除去されていることが認められ
た。Subsequently, the supply amount of carbon dioxide gas was set to 500 g / h.
r was continuously supplied for one hour, and an extraction operation was performed while the gas component was being released to the atmosphere by a pressure-holding valve. After completion of the extraction, the supply of carbon dioxide was stopped, and the pressure holding valve was opened to set the extraction tank to atmospheric pressure, and the extracted resin component was recovered. When a part of the resin component before and after extraction was taken and the bromo content was measured, 3.8 wt% before extraction and 1.0% after extraction.
And it was confirmed that the flame retardant was extracted and removed.
【００１６】[0016]
【実施例２】抽出槽に市販ポリスチレン（エーアンドエ
ムポリスチレン（株）製：Ｈ８１１７）８５部、市販難
燃剤（東ソー（株）製：デカブロモジフェニルエーテ
ル）１０部及び、市販三酸化アンチモン（中山産業
（株）製）５部よりなる樹脂組成物８ｇを充填し、バン
ドヒーターにより８０℃に加熱し、実施例１と同様な液
化炭酸ガスにて４５ＭＰに設定後、炭酸ガスを５００ｇ
／ｈｒで３０分供給し、次いで、保圧弁を開放し５分間
掛けて３０ＭＰまで脱圧した。このような加圧／減圧操
作を１０回繰り返し実施した。抽出前後の樹脂成分の一
部をとり、ブロム含有量を測定したところ、抽出前７．
５ｗｔ％、抽出後０．７ｗｔ％を示した。Example 2 85 parts of a commercially available polystyrene (H8117 manufactured by A & M Polystyrene Co., Ltd.), 10 parts of a commercially available flame retardant (decabromodiphenyl ether manufactured by Tosoh Corporation) and 10 parts of a commercially available antimony trioxide (Nakayama Sangyo Co., Ltd.) 8 g of a resin composition consisting of 5 parts was filled, heated to 80 ° C. by a band heater, set to 45 MPa with the same liquefied carbon dioxide gas as in Example 1, and then 500 g of carbon dioxide gas
/ Hr for 30 minutes, then the holding pressure valve was opened and the pressure was released to 30MP over 5 minutes. Such pressurizing / depressurizing operation was repeated 10 times. A portion of the resin component before and after extraction was taken and the bromo content was measured.
5 wt% and 0.7 wt% after extraction.
【００１７】[0017]
【実施例３】難燃剤として（坂本薬品工業（株）製：Ｓ
Ｒ−Ｔ１００００；テトラブロモビスフェノールＡ−テ
トラブロモビスフェノールＡ・ジグリシジルエーテルコ
ポリマー）を使用する以外は、実施例１と同じ操作を実
施した。抽出前後の樹脂成分の一部をとり、ブロム含有
量を測定したところ、抽出前３．９ｗｔ％、抽出後０．
９ｗｔ％を示した。Example 3 As a flame retardant (Sakamoto Yakuhin Kogyo Co., Ltd .: S
R-T10000; tetrabromobisphenol A-tetrabromobisphenol A / diglycidyl ether copolymer), except that the same operation was performed as in Example 1. A portion of the resin component before and after extraction was taken, and the bromo content was measured.
9 wt% was shown.
【００１８】[0018]
【比較例１】保圧弁による抽出槽圧力調整を５ＭＰとし
た以外は、実施例１と同じ操作を繰り返した。抽出前後
の樹脂成分の一部をとり、ブロム含有量を測定したとこ
ろ、抽出前３．８ｗｔ％、抽出後３．７ｗｔ％を示し、
難燃剤が抽出除去されていないことが認められた。Comparative Example 1 The same operation as in Example 1 was repeated, except that the pressure in the extraction tank was adjusted to 5MP by a pressure holding valve. When a part of the resin component before and after extraction was taken and the bromo content was measured, it was 3.8 wt% before extraction and 3.7 wt% after extraction,
It was found that the flame retardant was not extracted and removed.
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１１年７月１３日（１９９９．７．１
３）[Submission date] July 13, 1999 (1999.7.1)
3)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１４[Correction target item name] 0014
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１４】[0014]
【実施例１】抽出槽に市販ＨＩＰＳ（合成ゴム１２．３
％入りポリスチレン；物性値：ビカット軟化点１０５
℃，ＭＩ（１０ｋｇ）５．５、引張強度２７０ｋｇ／ｃ
ｍ2、伸び４０％で例えば商標名エーアンドエムポリス
チレンＨ８１１７）９５部及び市販難燃剤（東ソー
（株）製：デカブロモジフェニルエーテル）５部よりな
る樹脂組成物８ｇを充填し、バンドヒーターにより５０
℃に加熱した。次いで、液体炭素ガス供給ポンプにてメ
タノールを１３ｗｔ％含有する炭酸ガスを供給し、保圧
弁により抽出槽圧力を４０ＭＰに調整した。Example 1 A commercially available HIPS (synthetic rubber 12.3) was placed in an extraction tank.
% Polystyrene; physical property value: Vicat softening point 105
° C, MI (10 kg) 5.5, tensile strength 270 kg / c
The resin composition was filled with 8 g of a resin composition composed of 95 parts of A & M polystyrene H8117 (trade name) and 5 parts of a commercially available flame retardant (manufactured by Tosoh Corporation: decabromodiphenyl ether) at m 2 and an elongation of 40%.
Heated to ° C. Then, a carbon dioxide gas containing 13 wt% of methanol was supplied by a liquid carbon gas supply pump, and the pressure in the extraction tank was adjusted to 40MP by a pressure holding valve.
Claims (4)
構成された、難燃樹脂組成物に超臨界状態の炭酸ガスを
連続的に接触させ、ハロゲン系難燃剤を抽出分離するこ
とを特徴とする難燃剤分離の方法。1. A flame retardant resin composition comprising a thermoplastic resin and a halogen-based flame retardant is continuously contacted with carbon dioxide in a supercritical state to extract and separate the halogen-based flame retardant. Method of flame retardant separation.
とを特徴とする請求項１記載の難燃剤分離の方法2. The method for separating a flame retardant according to claim 1, wherein said thermoplastic resin is a styrene resin.
を特徴とする請求項１記載の難燃剤分離の方法。3. The method for separating a flame retardant according to claim 1, wherein the extraction separation uses a reaction accelerator in combination.
特徴とする請求項１記載の難燃剤分離の方法。4. The method for separating a flame retardant according to claim 1, wherein the reaction accelerator is methanol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11190173A JP2001019792A (en) | 1999-07-05 | 1999-07-05 | Method for separating flame retardants from flame- retardant thermoplastic resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11190173A JP2001019792A (en) | 1999-07-05 | 1999-07-05 | Method for separating flame retardants from flame- retardant thermoplastic resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001019792A true JP2001019792A (en) | 2001-01-23 |
Family
ID=16253664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11190173A Pending JP2001019792A (en) | 1999-07-05 | 1999-07-05 | Method for separating flame retardants from flame- retardant thermoplastic resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001019792A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1149860A1 (en) * | 1999-09-17 | 2001-10-31 | Matsushita Electric Industrial Co., Ltd. | Method of treating thermoplastic resin composition containing flame retardant |
| WO2003078016A1 (en) * | 2002-03-20 | 2003-09-25 | Matsushita Electric Industrial Co., Ltd. | Extractor |
| JP2006249423A (en) * | 2005-02-14 | 2006-09-21 | Nikkiso Co Ltd | Method for recovering raw material from flexible poly(vinyl chloride)-based collected matter |
| JP2007092035A (en) * | 2005-08-31 | 2007-04-12 | Nikkiso Co Ltd | Method for recovering raw material of lead-containing plasticized polyvinyl chloride-based material |
| CN111704632A (en) * | 2020-06-01 | 2020-09-25 | 安徽超越环保科技股份有限公司 | Method for recycling waste circuit board flame retardant |
-
1999
- 1999-07-05 JP JP11190173A patent/JP2001019792A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1149860A1 (en) * | 1999-09-17 | 2001-10-31 | Matsushita Electric Industrial Co., Ltd. | Method of treating thermoplastic resin composition containing flame retardant |
| EP1149860A4 (en) * | 1999-09-17 | 2002-10-30 | Matsushita Electric Ind Co Ltd | Method of treating thermoplastic resin composition containing flame retardant |
| WO2003078016A1 (en) * | 2002-03-20 | 2003-09-25 | Matsushita Electric Industrial Co., Ltd. | Extractor |
| JP2006249423A (en) * | 2005-02-14 | 2006-09-21 | Nikkiso Co Ltd | Method for recovering raw material from flexible poly(vinyl chloride)-based collected matter |
| JP4648213B2 (en) * | 2005-02-14 | 2011-03-09 | 日機装株式会社 | Plasticizer recovery method |
| JP2007092035A (en) * | 2005-08-31 | 2007-04-12 | Nikkiso Co Ltd | Method for recovering raw material of lead-containing plasticized polyvinyl chloride-based material |
| JP4685728B2 (en) * | 2005-08-31 | 2011-05-18 | 日機装株式会社 | Raw material recovery method for lead-containing soft polyvinyl chloride material |
| CN111704632A (en) * | 2020-06-01 | 2020-09-25 | 安徽超越环保科技股份有限公司 | Method for recycling waste circuit board flame retardant |
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