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HK1071355A1 - Process for the distillation of a mixture of isomeric diisocyanatodiphenylmethanes - Google Patents

Process for the distillation of a mixture of isomeric diisocyanatodiphenylmethanes

Info

Publication number
HK1071355A1
HK1071355A1 HK05104251A HK05104251A HK1071355A1 HK 1071355 A1 HK1071355 A1 HK 1071355A1 HK 05104251 A HK05104251 A HK 05104251A HK 05104251 A HK05104251 A HK 05104251A HK 1071355 A1 HK1071355 A1 HK 1071355A1
Authority
HK
Hong Kong
Prior art keywords
distillation
mixture
isomeric diisocyanatodiphenylmethanes
diisocyanatodiphenylmethanes
isomeric
Prior art date
Application number
HK05104251A
Other languages
English (en)
Inventor
Hans-Peter Schal
Ulrich Wolf
Bernd Thelen
Original Assignee
Bayer Materialscience 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=32991948&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=HK1071355(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE102004001872A external-priority patent/DE102004001872A1/de
Application filed by Bayer Materialscience Ag filed Critical Bayer Materialscience Ag
Publication of HK1071355A1 publication Critical patent/HK1071355A1/xx

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
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C265/00—Derivatives of isocyanic acid
    • C07C265/12—Derivatives of isocyanic acid having isocyanate groups bound to carbon atoms of six-membered aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C265/00—Derivatives of isocyanic acid
    • C07C265/14—Derivatives of isocyanic acid containing at least two isocyanate groups bound to the same carbon skeleton

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
HK05104251A 2003-05-08 2005-05-20 Process for the distillation of a mixture of isomeric diisocyanatodiphenylmethanes HK1071355A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10320504 2003-05-08
DE102004001872A DE102004001872A1 (de) 2003-05-08 2004-01-14 Verfahren zur Destillation eines Gemisches isomerer Diisocyanatodiphenylmethane

Publications (1)

Publication Number Publication Date
HK1071355A1 true HK1071355A1 (en) 2005-07-15

Family

ID=32991948

Family Applications (1)

Application Number Title Priority Date Filing Date
HK05104251A HK1071355A1 (en) 2003-05-08 2005-05-20 Process for the distillation of a mixture of isomeric diisocyanatodiphenylmethanes

Country Status (9)

Country Link
US (1) US7649108B2 (xx)
EP (1) EP1475367B1 (xx)
JP (1) JP4868717B2 (xx)
KR (1) KR101075296B1 (xx)
CN (1) CN1310878C (xx)
BR (1) BRPI0401699A (xx)
CA (1) CA2466464A1 (xx)
HK (1) HK1071355A1 (xx)
SG (1) SG122820A1 (xx)

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DE102005004170A1 (de) * 2005-01-29 2006-08-03 Bayer Materialscience Ag Verfahren zur Destillation eines Gemisches isomerer Diisocyanatodiphenylmethane
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CN101003497B (zh) * 2007-01-09 2010-05-19 宁波万华聚氨酯有限公司 二苯基甲烷二异氰酸酯的同分异构体混合物的蒸馏处理方法
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DE102011087654A1 (de) 2011-12-02 2013-06-06 Bayer Materialscience Aktiengesellschaft Verfahren zur Herstellung von Isocyanaten
EP2828235B1 (de) 2012-03-19 2017-11-22 Covestro Deutschland AG Verfahren zur herstellung von isocyanaten
EP2831124B1 (en) 2012-03-30 2016-10-05 Sirrus, Inc. Composite and laminate articles and polymerizable systems for producing the same
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SG11201610637WA (en) 2014-06-24 2017-01-27 Covestro Deutschland Ag Methods for producing chemical products with operation interruptions
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KR20190039518A (ko) 2016-08-17 2019-04-12 코베스트로 도이칠란트 아게 통합 생산으로 이소시아네이트 및 적어도 1종의 추가의 화학 생성물을 제조하는 방법
US10364214B1 (en) 2016-09-01 2019-07-30 Covestro Deutschland Ag Method for producing isocyanates
HUE056221T2 (hu) 2017-07-03 2022-02-28 Covestro Intellectual Property Gmbh & Co Kg Termelõ berendezés kémiai termék elõállítására H-funkciós reagens és foszgén reagáltatásával és eljárás ennek üzemeltetésére
HUE062291T2 (hu) * 2017-09-19 2023-10-28 Sulzer Management Ag Felsõ válaszfal használata izomerizáló egységben
EP3498689A1 (en) 2017-12-14 2019-06-19 Sulzer Chemtech AG A plant and method for purifying an isomeric monomer, such as 4,4'-methylene diphenyl diisocyanate, from a crude mixture
US11207611B1 (en) 2018-07-03 2021-12-28 Burns & Mcdonnell Engineering Company, Inc. Process for separating hydrocarbons in a liquid feed utilizing an externally heated reboiler connected to a divided wall column as the primary source of heat energy
WO2021122625A1 (de) 2019-12-18 2021-06-24 Covestro Deutschland Ag Verfahren zur herstellung von di- und polyisocyanaten der diphenylmethanreihe
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Also Published As

Publication number Publication date
US20040236139A1 (en) 2004-11-25
US7649108B2 (en) 2010-01-19
KR20040095700A (ko) 2004-11-15
JP4868717B2 (ja) 2012-02-01
CN1550493A (zh) 2004-12-01
BRPI0401699A (pt) 2005-02-22
SG122820A1 (en) 2006-06-29
CA2466464A1 (en) 2004-11-08
EP1475367B1 (de) 2010-07-07
JP2004331667A (ja) 2004-11-25
CN1310878C (zh) 2007-04-18
EP1475367A1 (de) 2004-11-10
KR101075296B1 (ko) 2011-10-19

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20110508