BE830135A - Procede de production d'isocyanates a partir d'esters d'alcoyle inferieur d'acides carbamiques aromatiques monocycliques - Google Patents

Procede de production d'isocyanates a partir d'esters d'alcoyle inferieur d'acides carbamiques aromatiques monocycliques

Info

Publication number
BE830135A
BE830135A BE157250A BE157250A BE830135A BE 830135 A BE830135 A BE 830135A BE 157250 A BE157250 A BE 157250A BE 157250 A BE157250 A BE 157250A BE 830135 A BE830135 A BE 830135A
Authority
BE
Belgium
Prior art keywords
isocyanates
production
lower alcohol
monocyclic aromatic
alcohol esters
Prior art date
Application number
BE157250A
Other languages
English (en)
French (fr)
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 filed Critical
Publication of BE830135A publication Critical patent/BE830135A/xx

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)
BE157250A 1974-06-13 1975-06-11 Procede de production d'isocyanates a partir d'esters d'alcoyle inferieur d'acides carbamiques aromatiques monocycliques BE830135A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US479077A US3919278A (en) 1974-06-13 1974-06-13 Production of isocyanates from lower alkyl esters of mononuclear aromatic carbamic acids

Publications (1)

Publication Number Publication Date
BE830135A true BE830135A (fr) 1975-10-01

Family

ID=23902574

Family Applications (1)

Application Number Title Priority Date Filing Date
BE157250A BE830135A (fr) 1974-06-13 1975-06-11 Procede de production d'isocyanates a partir d'esters d'alcoyle inferieur d'acides carbamiques aromatiques monocycliques

Country Status (13)

Country Link
US (1) US3919278A (enExample)
JP (1) JPS5113745A (enExample)
AR (1) AR203241A1 (enExample)
BE (1) BE830135A (enExample)
BR (1) BR7503729A (enExample)
CA (1) CA1049029A (enExample)
DE (1) DE2526193B2 (enExample)
ES (1) ES438494A1 (enExample)
FR (1) FR2274608A1 (enExample)
GB (1) GB1503965A (enExample)
IT (1) IT1038828B (enExample)
NL (1) NL7506999A (enExample)
ZA (1) ZA753548B (enExample)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133868A (en) * 1977-08-16 1979-01-09 Idram Engineering Company Est. Isocyanates process III
JPS5679657A (en) * 1979-12-04 1981-06-30 Mitsui Toatsu Chem Inc Novel preparation of polyisocyanate
DE3047898A1 (de) * 1980-12-19 1982-07-15 Bayer Ag, 5090 Leverkusen Verfahren zur kontinuierlichen thermischen spaltung von carbamidsaeureestern und die verwendung von hierbei anfallenden isocyanate und carbamidsaeureester aufweisenden gemischen zur herstellung von isocyanaten
DE3108990A1 (de) * 1981-03-10 1982-09-23 Bayer Ag, 5090 Leverkusen Verfahren zur herstellung von polyisocyanaten
US4487713A (en) * 1981-06-26 1984-12-11 Exxon Research & Engineering Co. Production of isocyanates from esters of aromatic carbamic acids (urethanes)
DE3215591A1 (de) * 1982-04-27 1983-10-27 Bayer Ag, 5090 Leverkusen Verfahren zur kontinuierlichen thermischen spaltung von carbamidsaeureestern
US4633010A (en) * 1982-12-27 1986-12-30 American Cyanamid Company Tertiary aralkyl triurethane
IT1164223B (it) * 1983-05-13 1987-04-08 Anic Spa Procedimento perfezionato per la produzione di isocianati alchilici
JPS6427716A (en) * 1987-07-21 1989-01-30 Nippon Steel Corp Manufacture of corrosion resistant duplex tube
DE3915181A1 (de) * 1989-05-10 1990-11-15 Bayer Ag Verfahren zur herstellung von polyisocyanaten
DE4137428A1 (de) * 1991-11-14 1993-05-19 Bayer Ag Verfahren zur herstellung von polyisocyanaten
DE4141402A1 (de) * 1991-12-16 1993-06-17 Bayer Ag Verfahren zur herstellung von hochreinen aromatischen di- und/oder polyurethanen
US5233010A (en) * 1992-10-15 1993-08-03 Monsanto Company Process for preparing isocyanate and carbamate ester products
EP0680994A1 (en) * 1994-05-02 1995-11-08 Nippon Paint Co., Ltd. Re-Crosslinkable composition and method for recycling using the same
EP0795543B1 (de) * 1996-03-15 2001-10-31 Bayer Ag Verwendung von hochsiedenden Lösemitteln bzw. -gemischen als Wärmetauschmedium für die thermische Spaltung von Carbamidsäureestern
EP1259480B1 (en) * 2000-02-29 2005-10-05 Huntsman International Llc Process for the preparation of organic polyisocyanates
JP5731530B2 (ja) * 2009-12-01 2015-06-10 ビーエーエスエフ ソシエタス・ヨーロピアＢａｓｆ Ｓｅ カルバメートの熱的開裂によるイソシアネートの製造方法
CA2806533C (en) * 2010-10-04 2015-12-15 Asahi Kasei Chemicals Corporation Separation method and method for producing isocyanate

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2409712A (en) * 1944-02-03 1946-10-22 Du Pont Chemical process and products

Also Published As

Publication number Publication date
ZA753548B (en) 1976-04-28
DE2526193A1 (de) 1975-12-18
BR7503729A (pt) 1976-07-06
FR2274608B1 (enExample) 1980-08-08
FR2274608A1 (fr) 1976-01-09
IT1038828B (it) 1979-11-30
AU8167375A (en) 1976-12-02
DE2526193B2 (de) 1978-03-30
JPS5113745A (enExample) 1976-02-03
US3919278A (en) 1975-11-11
GB1503965A (en) 1978-03-15
ES438494A1 (es) 1977-02-01
CA1049029A (en) 1979-02-20
AR203241A1 (es) 1975-08-22
NL7506999A (nl) 1975-12-16

Similar Documents

Publication Publication Date Title
BE830135A (fr) Procede de production d'isocyanates a partir d'esters d'alcoyle inferieur d'acides carbamiques aromatiques monocycliques
BE830695A (fr) Procede pour la production d'isocyanates a partir d'esters d'cides carbamiques (urethanes)
IT994868B (it) Processo per la sintesi di acidi 2 4 dienoici alifatici e di loro esteri e composti relativi
BE881802A (fr) Procede de preparation d'esters d'acides arylacetiques a partir d'alpha-halo-alkylarylcetones
BE830119A (fr) Procede pour la preparation d'acides carboxyliques a partir d'halogenures organiques
BE862051A (fr) Procede de production d'hydrocarbures aromatiques a partir d'hydrocarbure aliphatiques
BE855192A (fr) Procede de production d'acides phosphinico-carboxyliques aliphatiques substitues
FR2315498A1 (fr) Procede de preparation d'esters d'acides carboxyliques a partir d'amines d'acides carboxyliques
BE833752A (fr) Procede de production d'esters aromatiques d'acide cyanique particulierement purs
BE811863A (fr) Procede pour la production d'isocyanates a partir d'urethanes
IT1006771B (it) Processo per la produzione di acidi ed esteri carbossilic
IT1017636B (it) Processo per la produzione di un diolo da un estere diolico
RO66489A (ro) Procedeu pentru prepararea esterilor acizilor tiocarbamici
BE784245A (fr) Procede de preparation de mono-et polyisocyanates organiques a partir d'urees trisubstituees
BR7400387D0 (pt) Processo para a preparacao de esteres o-etil-s-n-propilicos de acido o-viniltionotiolfosforico e composicoes inseticidas e acaricidas a base destes
BR7402335D0 (pt) Processo para a fabricacao de esteres insaturados de acidos carboxilicos
BE837969A (fr) Procede de production d'isocyanates aliphatiques
IT1012464B (it) Processo per la preparazione di esteri di acidi 5 ossocarbossilici
BR7407231D0 (pt) Processo para a preparacao de esteres 0-etil-s-n-propil-0-/piridaz-(3)-on-(6)-ilicos/ de acido tionotiol-fosforico e composicoes inseticidas e acaricidas a base destes
BE799609A (fr) Procede de production d'esters d'acides carboxyliques,
FR2473507B1 (fr) Procede de production d'acides arylpropioniques
RO68425A7 (ro) Procedeu pentru prepararea unui ester beta-hidroxi etilenic nesaturat
BE795899A (fr) Procede de fractionnement de triglycerides d'acides gras
BR7404448D0 (pt) Processo continuo para a producao de um diol livre de ester a partir de um ester de diol por alcoolise e processo aperfeicoado para desesterificacao
BE836558A (fr) Procede de production d'isocyanates