IT1106890B - Procedimento per recuperare policarbonati di qualita' elevata da rottami di policarbonati - Google Patents

Procedimento per recuperare policarbonati di qualita' elevata da rottami di policarbonati

Info

Publication number
IT1106890B
IT1106890B IT50772/78A IT5077278A IT1106890B IT 1106890 B IT1106890 B IT 1106890B IT 50772/78 A IT50772/78 A IT 50772/78A IT 5077278 A IT5077278 A IT 5077278A IT 1106890 B IT1106890 B IT 1106890B
Authority
IT
Italy
Prior art keywords
procedure
high quality
recovering high
scrap
quality polycarbonates
Prior art date
Application number
IT50772/78A
Other languages
English (en)
Other versions
IT7850772A0 (it
Original Assignee
Bayer Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayer Ag filed Critical Bayer Ag
Publication of IT7850772A0 publication Critical patent/IT7850772A0/it
Application granted granted Critical
Publication of IT1106890B publication Critical patent/IT1106890B/it

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/64—Preparation of O-metal compounds with O-metal group bound to a carbon atom belonging to a six-membered aromatic ring
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/01—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis
    • C07C37/055—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis the substituted group being bound to oxygen, e.g. ether group
    • C07C37/0555—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis the substituted group being bound to oxygen, e.g. ether group being esterified hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
    • C08G64/04—Aromatic polycarbonates
    • C08G64/06—Aromatic polycarbonates not containing aliphatic unsaturation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
    • C08G64/40—Post-polymerisation treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
IT50772/78A 1977-08-20 1978-08-18 Procedimento per recuperare policarbonati di qualita' elevata da rottami di policarbonati IT1106890B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772737693 DE2737693A1 (de) 1977-08-20 1977-08-20 Wiedergewinnung hochwertiger polycarbonate aus polycarbonat-abfaellen

Publications (2)

Publication Number Publication Date
IT7850772A0 IT7850772A0 (it) 1978-08-18
IT1106890B true IT1106890B (it) 1985-11-18

Family

ID=6016956

Family Applications (1)

Application Number Title Priority Date Filing Date
IT50772/78A IT1106890B (it) 1977-08-20 1978-08-18 Procedimento per recuperare policarbonati di qualita' elevata da rottami di policarbonati

Country Status (5)

Country Link
US (1) US4212774A (it)
EP (1) EP0000904B1 (it)
JP (1) JPS6051499B2 (it)
DE (2) DE2737693A1 (it)
IT (1) IT1106890B (it)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2842004A1 (de) * 1978-09-27 1980-04-10 Bayer Ag Verfahren zur herstellung von modifizierten polycarbonat-formmassen
DE2928464A1 (de) * 1979-07-13 1981-01-29 Bayer Ag Verwendung von speziellen rohbisphenolen zur herstellung von polycarbonaten
US4451583A (en) * 1982-01-26 1984-05-29 Olin Corporation Recycling of flexible polyurethane foam scrap
DE3204078A1 (de) * 1982-02-06 1983-08-18 Bayer Ag, 5090 Leverkusen Verfahren zur herstellung von tetramethylencarbonat und bis-tetramethylendicarbonat
US4885407A (en) * 1988-07-11 1989-12-05 General Electric Company Method for recovering a dihydric phenol from a scrap polyester
DE4039024A1 (de) * 1990-09-21 1992-03-26 Bayer Ag Reinigung von polycarbonat- und polyestercarbonat-abfaellen
DE4220412C2 (de) 1992-06-22 1995-12-07 Bayer Ag Verfahren zum Spalten von Polycarbonaten in Bisphenole und Diarylcarbonate
US5340839A (en) * 1992-09-24 1994-08-23 General Electric Company Method for salvaging organic thermoplastic values from discarded surface treated organic thermoplastic substrates
US5306349A (en) * 1992-11-23 1994-04-26 Sony Music Entertainment, Inc. Method for removing coatings from compact discs
DE4240314A1 (de) 1992-12-01 1994-06-09 Bayer Ag Verfahren zur Herstellung von thermoplastischen Polycarbonaten
US5414021A (en) * 1993-08-02 1995-05-09 General Electric Company Method for salvaging aromatic polycarbonate blend values
US5336814A (en) * 1993-09-07 1994-08-09 General Electric Company Method for recovering bis hydroxy aromatic organic values and bis aryl carbonate values from scrap aromatic polycarbonate
JPH09194614A (ja) * 1996-01-25 1997-07-29 Matsushita Electric Ind Co Ltd プラスチック成形体、およびプラスチック成形体の処理方法
US5958987A (en) * 1996-04-10 1999-09-28 The Coca-Cola Company Process for separating polyester from other materials
EP1071549A4 (en) 1998-03-16 2002-01-23 American Commodities Inc METHOD FOR REMOVING DAMAGED SURFACE MATERIALS FROM CRUSHED POLYMER PARTICLES
AUPQ747100A0 (en) * 2000-05-11 2000-06-08 Geo2 Limited Delamination process
US6436197B1 (en) 2000-09-05 2002-08-20 Metss Corporation Optical media demetallization process
RS3604A (sr) * 2001-06-19 2007-04-10 United Resource Recovery Corporation, Postupak za odvajanje poliestera od drugih materijala
JP2005126358A (ja) * 2003-10-23 2005-05-19 Teijin Chem Ltd 廃芳香族ポリカーボネートから芳香族ジヒドロキシ化合物金属塩水溶液を得る方法
JP4571395B2 (ja) * 2003-12-03 2010-10-27 帝人化成株式会社 廃芳香族ポリカーボネートから芳香族ジヒドロキシ化合物を得る方法
JP2005162674A (ja) * 2003-12-03 2005-06-23 Teijin Chem Ltd 廃芳香族ポリカーボネートから芳香族ジヒドロキシ化合物を得る方法
JP2005179228A (ja) * 2003-12-18 2005-07-07 Teijin Chem Ltd 廃芳香族ポリカーボネート樹脂から芳香族ジヒドロキシ化合物を得る方法
JP4571398B2 (ja) * 2003-12-18 2010-10-27 帝人化成株式会社 廃芳香族ポリカーボネート樹脂から芳香族ジヒドロキシ化合物のアルカリ水溶液を得る方法
JP4550407B2 (ja) * 2003-12-19 2010-09-22 帝人化成株式会社 廃芳香族ポリカーボネート樹脂から芳香族ジヒドロキシ化合物のアルカリ水溶液を得る方法
JP2005179267A (ja) * 2003-12-19 2005-07-07 Teijin Chem Ltd 廃芳香族ポリカーボネート樹脂から芳香族ジヒドロキシ化合物を得る方法
JP4571413B2 (ja) * 2004-01-19 2010-10-27 帝人化成株式会社 廃芳香族ポリカーボネート樹脂から芳香族ジヒドロキシ化合物のアルカリ水溶液を得る方法
JP4571414B2 (ja) * 2004-01-20 2010-10-27 帝人化成株式会社 廃芳香族ポリカーボネート樹脂の分解により得られた芳香族ジヒドロキシ化合物のアルカリ水溶液の貯蔵方法
JP2005239562A (ja) * 2004-02-24 2005-09-08 Teijin Chem Ltd 廃光ディスクから芳香族ヒドロキシ化合物を得る方法
JP4575046B2 (ja) * 2004-06-25 2010-11-04 帝人化成株式会社 芳香族ジヒドロキシ化合物金属塩水溶液を得る方法
JP4558435B2 (ja) * 2004-10-07 2010-10-06 帝人化成株式会社 芳香族ジヒドロキシ化合物のアルカリ水溶液を得る方法および有機溶媒を回収する方法
JP4606844B2 (ja) * 2004-11-08 2011-01-05 帝人化成株式会社 廃芳香族ポリカーボネートから精製された芳香族ジヒドロキシ化合物のアルカリ金属塩水溶液を得る方法
US7098299B1 (en) * 2005-03-16 2006-08-29 United Resource Recovery Corporation Separation of contaminants from polyester materials
JP4679577B2 (ja) * 2005-04-20 2011-04-27 帝人化成株式会社 廃芳香族ポリカーボネートから芳香族ジヒドロキシ化合物のアルカリ金属塩水溶液を得る方法
WO2015068628A1 (ja) 2013-11-11 2015-05-14 田岡化学工業株式会社 フルオレン構造を含む樹脂からビスフェノールフルオレン類を回収する方法
EP3134474B2 (en) 2014-04-25 2026-01-07 INEOS Styrolution Group GmbH Polymer blend for metal plating

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2364387A (en) * 1941-07-23 1944-12-05 Du Pont Production of polymer
US3008980A (en) * 1957-05-29 1961-11-14 Chemische Werke Witten Gmbh Method for utilizing waste polyethylene terephthalate materials
DE1234026B (de) * 1961-08-23 1967-02-09 Wolfen Filmfab Veb Verfahren zur Herstellung hochmolekularer Polycarbonate
DE1191956B (de) * 1962-08-13 1965-04-29 Bayer Ag Verfahren zum Eindampfen von Loesungen von Kunststoffen in organischen Loesungsmitteln
US3728287A (en) * 1971-10-18 1973-04-17 Eastman Kodak Co Hydrolyzing polyester
US4040991A (en) * 1973-12-10 1977-08-09 Mcdonnell Douglas Corporation Polyurethane foam reconstitution
US4136967A (en) * 1974-09-04 1979-01-30 Bayer Aktiengesellschaft Screw machine for the continuous degradation of plastics
DE2442387C3 (de) 1974-09-04 1981-09-10 Bayer Ag, 5090 Leverkusen Verfahren zur kontinuierlichen hydrolytischen Aufspaltung von hydrolysierbaren Kunststoffabfällen

Also Published As

Publication number Publication date
DE2737693A1 (de) 1979-02-22
IT7850772A0 (it) 1978-08-18
EP0000904B1 (de) 1980-07-23
JPS5448869A (en) 1979-04-17
JPS6051499B2 (ja) 1985-11-14
US4212774A (en) 1980-07-15
DE2860074D1 (en) 1980-11-13
EP0000904A1 (de) 1979-03-07

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