DE3460297D1 - Improved process for preparing alkyl isocyanates - Google Patents
Improved process for preparing alkyl isocyanatesInfo
- Publication number
- DE3460297D1 DE3460297D1 DE8484200660T DE3460297T DE3460297D1 DE 3460297 D1 DE3460297 D1 DE 3460297D1 DE 8484200660 T DE8484200660 T DE 8484200660T DE 3460297 T DE3460297 T DE 3460297T DE 3460297 D1 DE3460297 D1 DE 3460297D1
- Authority
- DE
- Germany
- Prior art keywords
- alkyl
- phenol
- phenyl
- thermal decomposition
- urethan
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C263/00—Preparation of derivatives of isocyanic acid
- C07C263/04—Preparation of derivatives of isocyanic acid from or via carbamates or carbamoyl halides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT21081/83A IT1164223B (it) | 1983-05-13 | 1983-05-13 | Procedimento perfezionato per la produzione di isocianati alchilici |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3460297D1 true DE3460297D1 (en) | 1986-08-21 |
Family
ID=11176452
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8484200660T Expired DE3460297D1 (en) | 1983-05-13 | 1984-05-08 | Improved process for preparing alkyl isocyanates |
Country Status (7)
Country | Link |
---|---|
US (1) | US4514339A (de) |
EP (1) | EP0125726B2 (de) |
JP (1) | JPS59212455A (de) |
AT (1) | ATE20734T1 (de) |
CA (1) | CA1218669A (de) |
DE (1) | DE3460297D1 (de) |
IT (1) | IT1164223B (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1183332B (it) * | 1985-02-08 | 1987-10-22 | Enichem Sintesi | Procedimento per la produzione di n-metilcarbammati |
GR870442B (en) * | 1986-03-21 | 1987-07-20 | Union Carbide Corp | Process for preparing methyl isocyanate |
TW200844080A (en) * | 2007-01-11 | 2008-11-16 | Asahi Kasei Chemicals Corp | Process for producing isocyanate |
US9056819B2 (en) | 2007-03-30 | 2015-06-16 | Asahi Kasei Chemicals Corporation | Isocyanate production process using composition containing carbamic acid ester and aromatic hydroxy compound, and composition for transfer and storage of carbamic acid ester |
KR101525641B1 (ko) | 2008-05-15 | 2015-06-03 | 아사히 가세이 케미칼즈 가부시키가이샤 | 이소시아네이트의 제조 방법 |
EP2275405B1 (de) | 2008-05-15 | 2019-04-24 | Asahi Kasei Kabushiki Kaisha | Verfahren zur herstellung von isocyanat unter einsatz von kohlensäurediarylestern |
KR101347403B1 (ko) | 2009-08-21 | 2014-01-02 | 아사히 가세이 케미칼즈 가부시키가이샤 | N-치환 카르밤산 에스테르의 제조 방법, 상기 n-치환 카르밤산 에스테르를 이용하는 이소시아네이트의 제조 방법, 및 n-치환 카르밤산 에스테르 및 방향족 히드록시 화합물을 포함하는 n-치환 카르밤산 에스테르의 이송용 및 저장용 조성물 |
BR112013005752A2 (pt) | 2011-02-21 | 2016-05-03 | Asahi Kasei Chemical Corp | método para produzir um composto carbonila, e, para produzir um isocianato |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2409712A (en) * | 1944-02-03 | 1946-10-22 | Du Pont | Chemical process and products |
US3366662A (en) * | 1964-03-02 | 1968-01-30 | Olin Mathieson | Process for preparing isocyanates |
US3919278A (en) * | 1974-06-13 | 1975-11-11 | Atlantic Richfield Co | Production of isocyanates from lower alkyl esters of mononuclear aromatic carbamic acids |
DE2512514C2 (de) * | 1975-03-21 | 1982-12-30 | Basf Ag, 6700 Ludwigshafen | Verfahren zur Herstellung von aliphatischen Isocyanaten |
US4123450A (en) * | 1977-09-22 | 1978-10-31 | Fmc Corporation | Process for preparing alkyl isocyanates |
DE2756928A1 (de) * | 1977-12-21 | 1979-07-05 | Bayer Ag | Verfahren zur kontinuierlichen herstellung von monoisocyanaten |
-
1983
- 1983-05-13 IT IT21081/83A patent/IT1164223B/it active
-
1984
- 1984-05-08 DE DE8484200660T patent/DE3460297D1/de not_active Expired
- 1984-05-08 EP EP84200660A patent/EP0125726B2/de not_active Expired - Lifetime
- 1984-05-08 AT AT84200660T patent/ATE20734T1/de not_active IP Right Cessation
- 1984-05-09 CA CA000453933A patent/CA1218669A/en not_active Expired
- 1984-05-10 US US06/608,984 patent/US4514339A/en not_active Expired - Lifetime
- 1984-05-14 JP JP59094761A patent/JPS59212455A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPH0514705B2 (de) | 1993-02-25 |
IT1164223B (it) | 1987-04-08 |
ATE20734T1 (de) | 1986-08-15 |
JPS59212455A (ja) | 1984-12-01 |
CA1218669A (en) | 1987-03-03 |
US4514339A (en) | 1985-04-30 |
EP0125726A1 (de) | 1984-11-21 |
EP0125726B2 (de) | 1992-09-09 |
IT8321081A1 (it) | 1984-11-13 |
IT8321081A0 (it) | 1983-05-13 |
EP0125726B1 (de) | 1986-07-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8380 | Miscellaneous part iii |
Free format text: DER PATENTINHABER LAUTET RICHTIG: AGIP S.P.A., MAILAND/MILANO, IT |
|
8363 | Opposition against the patent | ||
8380 | Miscellaneous part iii |
Free format text: DER PATENTINHABER LAUTET RICHTIG: ENICHEM SINTESI S.P.A., PALERMO, IT |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: ENICHEM SYNTHESIS S.P.A., PALERMO, IT |
|
8328 | Change in the person/name/address of the agent |
Free format text: ZUMSTEIN, F., DIPL.-CHEM. DR.RER.NAT. KLINGSEISEN, F., DIPL.-ING., PAT.-ANWAELTE, 8000 MUENCHEN |