KR940003928A - Method for preparing isocyanic acid by decomposing N, N-disubstituted urea - Google Patents

Method for preparing isocyanic acid by decomposing N, N-disubstituted urea Download PDF

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Publication number
KR940003928A
KR940003928A KR1019930015594A KR930015594A KR940003928A KR 940003928 A KR940003928 A KR 940003928A KR 1019930015594 A KR1019930015594 A KR 1019930015594A KR 930015594 A KR930015594 A KR 930015594A KR 940003928 A KR940003928 A KR 940003928A
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KR
South Korea
Prior art keywords
isocyanic acid
decomposing
urea
disubstituted
disubstituted urea
Prior art date
Application number
KR1019930015594A
Other languages
Korean (ko)
Inventor
알프레드 학클 쿠르트
뮐러 마르틴
슐쯔 에리히
슈테른 게르하르트
팔크 하인쯔
Original Assignee
알프레드 노이바우어, 디트프리드 가이쓸러
케미 린쯔 게젤샤프트 엠. 베. 하
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
Priority claimed from AT0163092A external-priority patent/AT398749B/en
Application filed by 알프레드 노이바우어, 디트프리드 가이쓸러, 케미 린쯔 게젤샤프트 엠. 베. 하 filed Critical 알프레드 노이바우어, 디트프리드 가이쓸러
Publication of KR940003928A publication Critical patent/KR940003928A/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
    • C07C209/62—Preparation of compounds containing amino groups bound to a carbon skeleton by cleaving carbon-to-nitrogen, sulfur-to-nitrogen, or phosphorus-to-nitrogen bonds, e.g. hydrolysis of amides, N-dealkylation of amines or quaternary ammonium compounds
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C3/00—Cyanogen; Compounds thereof
    • C01C3/001—Preparation by decomposing nitrogen-containing organic compounds, e.g. molasse waste or urea

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

본 발명은 N, N-이치환된 우레아를 실온에서 저휘발성의 2급 아민과 최종적으로 회수되는 이소시안산으로 분해시킴을 특징으로 하여, 이소시안산을 제조하는 방법에 관한 것이다.The present invention relates to a process for producing isocyanic acid, characterized by decomposing N, N-disubstituted urea into low volatility secondary amines and finally recovered isocyanic acid at room temperature.

Description

N, N-이치환된 우레아를 분해시켜 이소시안산을 제조하는 방법Method for preparing isocyanic acid by decomposing N, N-disubstituted urea

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (5)

N, N-이치환된 우레아를 승온에서 저휘발성의 2급 아민과 최종적으로 회수되는 이소시안산으로 분해시킴을 특징으로 하여, 이소시안산을 제조하는 방법.A method for producing isocyanic acid, characterized by decomposing N, N-disubstituted urea into low volatility secondary amine and finally recovered isocyanic acid at elevated temperature. 제1항에 있어서, 사용되는 N, N-이치환된 우레아가 일반식(Ⅰ)의 화합물임을 특징으로 하는 방법.The method of claim 1, wherein the N, N-disubstituted urea used is a compound of formula (I). 상기식에서, R1및 R2는 동일하거나 상이하며, 치환되지 않거나 (C1-C6)-알콕시 또는 페닐에 의해 치환된 선형, 측쇄 또는 사이클릭 (C1-C24)-알킬 라디칼; 또는 치환되지 않거나 (C1-C6)-알킬, (C1-C6)-알콕시, 하이그록실, 할로겐, 니트로 또는 아미노에 의해 치환된 페닐 라디칼이다.Wherein R 1 and R 2 are the same or different and are linear, branched or cyclic (C 1 -C 24 ) -alkyl radicals which are unsubstituted or substituted by (C 1 -C 6 ) -alkoxy or phenyl; Or a phenyl radical which is unsubstituted or substituted by (C 1 -C 6 ) -alkyl, (C 1 -C 6 ) -alkoxy, hydroxyl, halogen, nitro or amino. 제1항에 있어서, 사용되는 N, N-이치환된 우레아가 R1및 R2가 선형, 측쇄 또는 사이클릭(C4-C20)-알킬라디칼, 또는 벤질 라디칼인 일반식(Ⅰ)의 화합물임을 특징으로 하는 방법.The compound of formula (I) according to claim 1, wherein the N, N-disubstituted ureas used are R 1 and R 2 are linear, branched or cyclic (C 4 -C 20 ) -alkylradicals, or benzyl radicals. Method characterized by that. 제1항에 있어서, 우레아의 분해가, 임의로 이소시안산용 용매 및/또는 불활성 기체 스트림과 혼합된, 반응조건하에서 불활성인 희석제 중에서 또는 희석제 없이 수행됨을 특징으로 하는 방법.The process according to claim 1, wherein the decomposition of the urea is carried out in or without diluent, which is inert under the reaction conditions, optionally mixed with a solvent for isocyanic acid and / or an inert gas stream. 제1항에 있어서, 반응온도가 약 150 내지 300℃, 특히 바람직하게는 180내지 260℃임을 특징으로 하는 방법.Process according to claim 1, characterized in that the reaction temperature is about 150 to 300 ° C, particularly preferably 180 to 260 ° C. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930015594A 1992-08-13 1993-08-12 Method for preparing isocyanic acid by decomposing N, N-disubstituted urea KR940003928A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0163092A AT398749B (en) 1992-08-13 1992-08-13 METHOD FOR PRODUCING ISOCYANIC ACID BY DEGRADING N, N-DISUBSTITUTED UREAS
ATA1630/92 1992-08-13

Publications (1)

Publication Number Publication Date
KR940003928A true KR940003928A (en) 1994-03-14

Family

ID=3517573

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930015594A KR940003928A (en) 1992-08-13 1993-08-12 Method for preparing isocyanic acid by decomposing N, N-disubstituted urea

Country Status (8)

Country Link
KR (1) KR940003928A (en)
AT (1) ATE142988T1 (en)
DE (1) DE59303834D1 (en)
MX (1) MX9304899A (en)
SI (1) SI9300429A (en)
SK (1) SK71793A3 (en)
TW (1) TW278068B (en)
ZA (1) ZA935236B (en)

Also Published As

Publication number Publication date
ATE142988T1 (en) 1996-10-15
DE59303834D1 (en) 1996-10-24
ZA935236B (en) 1994-03-02
SK71793A3 (en) 1994-06-08
MX9304899A (en) 1994-04-29
SI9300429A (en) 1995-04-30
TW278068B (en) 1996-06-11

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