HU913325D0 - Process for fractionizing reaction-sollubles containing methylene bridged polyphenylene-polyizocyanate - Google Patents

Process for fractionizing reaction-sollubles containing methylene bridged polyphenylene-polyizocyanate

Info

Publication number
HU913325D0
HU913325D0 HU913325A HU332591A HU913325D0 HU 913325 D0 HU913325 D0 HU 913325D0 HU 913325 A HU913325 A HU 913325A HU 332591 A HU332591 A HU 332591A HU 913325 D0 HU913325 D0 HU 913325D0
Authority
HU
Hungary
Prior art keywords
sollubles
polyizocyanate
fractionizing
reaction
containing methylene
Prior art date
Application number
HU913325A
Other languages
English (en)
Other versions
HUT60305A (en
HU208984B (en
Inventor
Noritoshi Ishida
Zunzi Tashima
Mitsunori Shimamatsu
Kazunari Nitta
Takashi Nagou
Original Assignee
Mitsui Toatsu Chemicals
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 Mitsui Toatsu Chemicals filed Critical Mitsui Toatsu Chemicals
Publication of HU913325D0 publication Critical patent/HU913325D0/hu
Publication of HUT60305A publication Critical patent/HUT60305A/hu
Publication of HU208984B publication Critical patent/HU208984B/hu

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00—Preparation of derivatives of isocyanic acid
    • C07C263/10—Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polyurethanes Or Polyureas (AREA)
HU913325A 1990-10-23 1991-10-22 Process for fractionating methylene-bridged polyphenylene - polyisocyanate reaction mixture HU208984B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2283515A JP2875877B2 (ja) 1990-10-23 1990-10-23 メチレン架橋ポリフェニレンポリイソシアネートの製造方法

Publications (3)

Publication Number Publication Date
HU913325D0 true HU913325D0 (en) 1992-01-28
HUT60305A HUT60305A (en) 1992-08-28
HU208984B HU208984B (en) 1994-02-28

Family

ID=17666538

Family Applications (1)

Application Number Title Priority Date Filing Date
HU913325A HU208984B (en) 1990-10-23 1991-10-22 Process for fractionating methylene-bridged polyphenylene - polyisocyanate reaction mixture

Country Status (8)

Country Link
US (1) US5179227A (hu)
EP (1) EP0482490B1 (hu)
JP (1) JP2875877B2 (hu)
KR (1) KR950008204B1 (hu)
CN (1) CN1045003C (hu)
BR (1) BR9104556A (hu)
DE (1) DE69130101T2 (hu)
HU (1) HU208984B (hu)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5179222A (en) * 1991-09-13 1993-01-12 International Flavors & Fragrances Inc. Process for preparing phenyl butyronitriles and perfumery use of 2,2-dimethyl-4-phenyl valeronitrile
KR970001071B1 (ko) * 1992-06-23 1997-01-25 미쓰이도오아쓰가가꾸 가부시끼가이샤 메틸렌 가교 폴리페닐렌 폴리이소시아네이트의 제조방법
DE10333929A1 (de) * 2003-07-25 2005-02-24 Bayer Materialscience Ag Herstellung von Mischungen von Di- und Polyisocyanaten der Diphenylmethanreihe mit hohen Gehalten an 4,4'-Methylendiphenyldiisocyanat und 2,4'-Methylendiphenyldiisocyanat
DE102004005319A1 (de) * 2004-02-04 2005-08-25 Bayer Materialscience Ag Verfahren zur Herstellung von hochreinem 2,4'-Methylendiphenyldiisocyanat
BRPI0519528A2 (pt) * 2004-12-22 2009-02-17 Lanxess Deutschand Gmbh processo para reduÇço do teor de cloro hodrolisÁvel em isocianatos orgÂnicos ou em misturas de isocianatos orgÂnicos, emprego de isocianatos
DE102005026864A1 (de) * 2005-06-10 2006-12-14 Bayer Materialscience Ag Verfahren zur Herstellung von 4,4'-Diphenylmethandiisocyanat
DE102005055189A1 (de) * 2005-11-19 2007-05-24 Bayer Materialscience Ag Verfahren zur Herstellung von 4,4'-Diphenylmethandiisocyanat
EP2042485A1 (en) * 2007-09-28 2009-04-01 Huntsman International Llc Process for fractionating a mixture of polyisocyanates
JP2010120870A (ja) * 2008-11-18 2010-06-03 Nippon Polyurethane Ind Co Ltd メチレン架橋ポリフェニルポリイソシアネートの製造方法
CN104326941B (zh) * 2014-11-05 2016-07-13 华玉叶 一种浓缩粗多异氰酸酯的方法
KR102618935B1 (ko) 2015-01-30 2023-12-27 바스프 에스이 낮은 부산물 함량의 폴리페닐렌 폴리메틸렌 폴리이소시아네이트
CN111069203B (zh) * 2019-12-06 2021-07-23 万华化学集团股份有限公司 一种光气化法异氰酸酯生产装置中酸性固体物的安全清理方法
US20240034831A1 (en) * 2020-09-18 2024-02-01 Keun Sik Kim Process of preparing isocyanate compounds comprising non-chlorinated derivative and composition thereof
CN115650880B (zh) * 2022-11-03 2024-08-20 万华化学（宁波）有限公司 一种过保质期mdi的回收处理方法及由其制备碳化二亚胺改性异氰酸酯的方法和产品

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4014914A (en) * 1970-01-12 1977-03-29 Badische Anilin- & Soda-Fabrik Aktiengesellschaft Manufacture of 4,4'-diphenylmethane diisocyanate and a mixture of diisocyanates and polyisocyanates
GB1398975A (en) * 1971-08-16 1975-06-25 Ici Ltd Heat treatment and distillation of methylene bridged polyphenyl polyisocyanates
GB1384065A (en) * 1971-11-30 1975-02-19 Ici Ltd Process for the purification of organic isocyanates
GB1417087A (en) * 1973-05-29 1975-12-10 Ici Ltd Polyisocyanates
US3925437A (en) * 1974-07-18 1975-12-09 Jefferson Chem Co Inc Reduction of acidity of organic polymeric isocyanates
DE2624285C2 (de) * 1976-05-31 1987-03-12 Basf Ag, 6700 Ludwigshafen Verfahren zur kontinuierlichen Herstellung von organischen Isocyanaten
DE2631168B2 (de) * 1976-07-10 1979-03-08 Bayer Ag, 5090 Leverkusen Verfahren zur Herstellung von Diisocyanatodiphenylmethan-Isomeren mit einem eingestellten Gehalt an Chlorverbindungen
DE2844591A1 (de) * 1978-10-13 1980-04-24 Texaco Development Corp Verfahren zur reinigung und verminderung der aziditaet von polymethylen-polyphenylpolyisocyanat-gemischen
JPS5826337A (ja) * 1981-07-16 1983-02-16 Clarion Co Ltd 保持プランジヤ−機構
DE3145010A1 (de) * 1981-11-12 1983-05-19 Bayer Ag, 5090 Leverkusen Verfahren zur herstellung von 4,4'-diisocyanatodiphenylmethan
DD257827A1 (de) * 1987-02-20 1988-06-29 Schwarzheide Synthesewerk Veb Verfahren zur gewinnung von isocyanatkomponenten aus verfahrensprodukten der toluylendiisocyanatherstellung
DE3714439A1 (de) * 1987-04-30 1988-11-10 Bayer Ag Verfahren zur herstellung von (cyclo)aliphatischen diisocyanaten

Also Published As

Publication number Publication date
BR9104556A (pt) 1992-06-09
HUT60305A (en) 1992-08-28
JPH04159259A (ja) 1992-06-02
CN1060836A (zh) 1992-05-06
CN1045003C (zh) 1999-09-08
US5179227A (en) 1993-01-12
JP2875877B2 (ja) 1999-03-31
EP0482490A2 (en) 1992-04-29
KR920008098A (ko) 1992-05-27
EP0482490B1 (en) 1998-09-02
KR950008204B1 (ko) 1995-07-26
DE69130101T2 (de) 1999-02-18
HU208984B (en) 1994-02-28
DE69130101D1 (de) 1998-10-08
EP0482490A3 (en) 1993-03-31

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HPC4 Succession in title of patentee

Owner name: MITSUI CHEMICALS, INC., JP