IN2014DN07241A - - Google Patents

Info

Publication number
IN2014DN07241A
IN2014DN07241A IN7241DEN2014A IN2014DN07241A IN 2014DN07241 A IN2014DN07241 A IN 2014DN07241A IN 7241DEN2014 A IN7241DEN2014 A IN 7241DEN2014A IN 2014DN07241 A IN2014DN07241 A IN 2014DN07241A
Authority
IN
India
Prior art keywords
crude liquid
liquid isocyanate
isocyanate stream
phosgenating
phosgenation
Prior art date
Application number
Inventor
Rainer Bruns
Wolfgang Lorenz
Andreas Karl Rausch
Stefan Wershofen
Tim Loddenkemper
Original Assignee
Bayer Ip Gmbh
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 Ip Gmbh filed Critical Bayer Ip Gmbh
Publication of IN2014DN07241A publication Critical patent/IN2014DN07241A/en

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
    • 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
    • Y02P20/582—Recycling of unreacted starting or intermediate materials

Abstract

The invention relates to a method for producing isocyanates by phosgenating the corresponding amines wherein low boiling secondary components excessive phosgene and the coupling product hydrogen chloride are separated from the crude liquid isocyanate stream which is obtained after the phosgenation has occurred within a maximum of 60 minutes. The crude liquid isocyanate stream is not exposed to temperatures above 250 °C until said separation.
IN7241DEN2014 2012-03-19 2013-03-15 IN2014DN07241A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP12160168 2012-03-19
PCT/EP2013/055411 WO2013139703A1 (en) 2012-03-19 2013-03-15 Method for producing isocyanates

Publications (1)

Publication Number Publication Date
IN2014DN07241A true IN2014DN07241A (en) 2015-04-24

Family

ID=47882196

Family Applications (1)

Application Number Title Priority Date Filing Date
IN7241DEN2014 IN2014DN07241A (en) 2012-03-19 2013-03-15

Country Status (10)

Country Link
US (2) US9593075B2 (en)
EP (1) EP2828235B1 (en)
JP (1) JP6113824B2 (en)
KR (1) KR102020697B1 (en)
CN (2) CN104203910A (en)
ES (1) ES2658214T3 (en)
HU (1) HUE035678T2 (en)
IN (1) IN2014DN07241A (en)
PT (1) PT2828235T (en)
WO (1) WO2013139703A1 (en)

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Publication number Priority date Publication date Assignee Title
KR20160138410A (en) 2014-03-27 2016-12-05 코베스트로 도이칠란트 아게 Method for operating a gas-phase phosgenation plant
KR20160137544A (en) 2014-03-27 2016-11-30 코베스트로 도이칠란트 아게 Process for operating a gas phase phosgenation plant
US10513487B2 (en) 2014-06-24 2019-12-24 Covestro Deutschland Ag Methods for producing chemical products with operation interruptions
HUE055741T2 (en) 2016-08-17 2021-12-28 Covestro Intellectual Property Gmbh & Co Kg Method and device for the production of various chemical products
HUE053661T2 (en) * 2016-12-21 2021-07-28 Covestro Intellectual Property Gmbh & Co Kg Method for drying of tdi remnants
EP3634947B1 (en) * 2017-06-08 2022-09-07 Covestro Intellectual Property GmbH & Co. KG Method for the production of isocyanates in the gasphase
JP6839621B2 (en) * 2017-06-22 2021-03-10 本田技研工業株式会社 Gas-liquid separator
CN107353231A (en) * 2017-07-17 2017-11-17 薛永和 A kind of method for preparing organic isocyanate
CN111496949A (en) * 2020-03-20 2020-08-07 广西丰林木业集团股份有限公司 Formaldehyde-free moisture-proof shaving board and preparation process thereof
KR20220095869A (en) * 2020-12-30 2022-07-07 한화솔루션 주식회사 Method for preparing isocyanate compound
KR20220095867A (en) * 2020-12-30 2022-07-07 한화솔루션 주식회사 Method for preparing isocyanate compound
KR20220095865A (en) * 2020-12-30 2022-07-07 한화솔루션 주식회사 Method for preparing isocyanate compound
CN114149345B (en) * 2021-12-09 2023-04-21 万华化学集团股份有限公司 Method for preparing isocyanate

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Also Published As

Publication number Publication date
PT2828235T (en) 2018-02-07
WO2013139703A1 (en) 2013-09-26
KR102020697B1 (en) 2019-09-10
US9593075B2 (en) 2017-03-14
US20150291512A1 (en) 2015-10-15
KR20140136456A (en) 2014-11-28
CN104203910A (en) 2014-12-10
ES2658214T3 (en) 2018-03-08
US9695115B2 (en) 2017-07-04
JP6113824B2 (en) 2017-04-12
HUE035678T2 (en) 2018-05-28
EP2828235B1 (en) 2017-11-22
EP2828235A1 (en) 2015-01-28
US20160376228A1 (en) 2016-12-29
CN110437108A (en) 2019-11-12
JP2015514065A (en) 2015-05-18

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