BR9504058A - Processo para a redução do teor de ferro em diisocianato de difenilmetano ou em misturas de poliisocianatos da série de diisocianato de difenilmetano - Google Patents

Processo para a redução do teor de ferro em diisocianato de difenilmetano ou em misturas de poliisocianatos da série de diisocianato de difenilmetano

Info

Publication number
BR9504058A
BR9504058A BR9504058A BR9504058A BR9504058A BR 9504058 A BR9504058 A BR 9504058A BR 9504058 A BR9504058 A BR 9504058A BR 9504058 A BR9504058 A BR 9504058A BR 9504058 A BR9504058 A BR 9504058A
Authority
BR
Brazil
Prior art keywords
diphenylmethane diisocyanate
reducing
iron content
polyisocyanate mixtures
series
Prior art date
Application number
BR9504058A
Other languages
English (en)
Inventor
Heinz-Herbert Mueller
Lothar Puppe
Eckart Waldau
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 BR9504058A publication Critical patent/BR9504058A/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00—Preparation of derivatives of isocyanic acid
    • C07C263/18—Separation; Purification; Stabilisation; Use of additives
    • C07C263/20—Separation; Purification
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/088—Removal of water or carbon dioxide from the reaction mixture or reaction components
    • C08G18/0885—Removal of water or carbon dioxide from the reaction mixture or reaction components using additives, e.g. absorbing agents
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Polyurethanes Or Polyureas (AREA)
BR9504058A 1994-09-19 1995-09-18 Processo para a redução do teor de ferro em diisocianato de difenilmetano ou em misturas de poliisocianatos da série de diisocianato de difenilmetano BR9504058A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4433262A DE4433262A1 (de) 1994-09-19 1994-09-19 Verfahren zur Einstellung eines bestimmten Gehaltes an Eisen in Diphenylmethandiisocyanat oder in Polyisocyanat-Gemischen der Diphenylmethandiisocyanat-Reihe

Publications (1)

Publication Number Publication Date
BR9504058A true BR9504058A (pt) 1996-09-24

Family

ID=6528541

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9504058A BR9504058A (pt) 1994-09-19 1995-09-18 Processo para a redução do teor de ferro em diisocianato de difenilmetano ou em misturas de poliisocianatos da série de diisocianato de difenilmetano

Country Status (6)

Country Link
EP (1) EP0702000B1 (pt)
JP (1) JP3881046B2 (pt)
BR (1) BR9504058A (pt)
CA (1) CA2158414A1 (pt)
DE (2) DE4433262A1 (pt)
ES (1) ES2127444T3 (pt)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002003462A (ja) * 2000-06-20 2002-01-09 Kyowa Yuka Co Ltd リジンエステルトリイソシアネートの製造法
JP4792736B2 (ja) * 2004-12-09 2011-10-12 日本ポリウレタン工業株式会社 有機ポリイソシアネート組成物、該有機ポリイソシアネートの製造方法、接着剤組成物及び塗料用組成物
WO2008023690A1 (fr) * 2006-08-22 2008-02-28 Nippon Polyurethane Industry Co., Ltd. Formule de diphénylméthane-isocyanate modifiée par uréthane
JP5258327B2 (ja) * 2008-02-28 2013-08-07 東ソー株式会社 ポリイソシアネートの製造方法
JP2010047503A (ja) * 2008-08-20 2010-03-04 Nippon Polyurethane Ind Co Ltd イソシアネート混合物の製造方法
JP2010047501A (ja) * 2008-08-20 2010-03-04 Nippon Polyurethane Ind Co Ltd イソシアネート混合物の製造前処理方法
CN107021920B (zh) * 2016-08-12 2019-07-23 万华化学集团股份有限公司 一种异氰酸酯聚合催化剂及其制备方法，及其用于制备聚异氰酸酯的方法
CN107754755B (zh) * 2017-10-20 2020-04-10 万华化学（宁波）有限公司 脱除粗异氰酸酯产品中铁分的吸附剂及其制备方法和脱除方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2207671A (en) * 1987-08-07 1989-02-08 Basf Corp Process for the removal of color-forming trace impurities from methylene bis (phenylisocyanates)

Also Published As

Publication number Publication date
JPH0899946A (ja) 1996-04-16
EP0702000A1 (de) 1996-03-20
ES2127444T3 (es) 1999-04-16
CA2158414A1 (en) 1996-03-20
EP0702000B1 (de) 1999-01-20
DE4433262A1 (de) 1996-03-21
JP3881046B2 (ja) 2007-02-14
DE59504885D1 (de) 1999-03-04

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Legal Events

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FG9A Patent or certificate of addition granted
B24C Patent annual fee: request for for restoration

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B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

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