ES2103073T3 - Procedimiento para preparar isocianatos. - Google Patents

Procedimiento para preparar isocianatos.

Info

Publication number
ES2103073T3
ES2103073T3 ES93870045T ES93870045T ES2103073T3 ES 2103073 T3 ES2103073 T3 ES 2103073T3 ES 93870045 T ES93870045 T ES 93870045T ES 93870045 T ES93870045 T ES 93870045T ES 2103073 T3 ES2103073 T3 ES 2103073T3
Authority
ES
Spain
Prior art keywords
ammonium carbamate
carbamate salt
procedure
preparing isocyanates
electrophilic
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 - Lifetime
Application number
ES93870045T
Other languages
English (en)
Inventor
William Dennis Mcghee
Thomas Edward Waldman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Monsanto Co
Original Assignee
Monsanto Co
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 Monsanto Co filed Critical Monsanto Co
Application granted granted Critical
Publication of ES2103073T3 publication Critical patent/ES2103073T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2601/00—Systems containing only non-condensed rings
    • C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
    • C07C2601/14—The ring being saturated

Landscapes

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

Abstract

UN METODO PARA PREPARAR ISOCIANATOS, COMPRENDIENDO (A) EL CONTACTO DE DIOXIDO DE CARBONO Y UNA AMINA PRIMARIA EN PRESENCIA DE UN DISOLVENTE ORGANICO APROTICO Y UNA BASE NITROGENOSA ORGANICA, PARA OBTENER LA CORRESPONDIENTE SAL DE CARBAMATO AMONICO, Y (B) REACCIONAR LA SAL DE CARBAMATO AMONICO CON UN AGENTE DESHIDRATANTE ELECTROFILICO U OXOFILICO, PARA OBTENER EL CORRESPONDIENTE ISOCIANATO. UNA SEGUNDA VERSION COMPRENDE LA RECUPERACION DE LA SAL DE CARBAMATO AMONICO DE LA FASE (A) ANTERIOR, PARA REACCIONAR LA SAL DE CARBAMATO AMONICO CON UN AGENTE DESHIDRATANTE ELECTROFILICO U OXOFILICO, EN PRESENCIA DE UN DISOLVENTE ORGANICO APROTICO Y UNA BASE NITROGENOSA ORGANICA.
ES93870045T 1992-03-16 1993-03-15 Procedimiento para preparar isocianatos. Expired - Lifetime ES2103073T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/852,455 US5189205A (en) 1992-03-16 1992-03-16 Process for preparing isocyanates

Publications (1)

Publication Number Publication Date
ES2103073T3 true ES2103073T3 (es) 1997-08-16

Family

ID=25313377

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93870045T Expired - Lifetime ES2103073T3 (es) 1992-03-16 1993-03-15 Procedimiento para preparar isocianatos.

Country Status (8)

Country Link
US (1) US5189205A (es)
EP (1) EP0566555B1 (es)
JP (1) JP3420604B2 (es)
AT (1) ATE153654T1 (es)
CA (1) CA2091666C (es)
DE (1) DE69310992T2 (es)
ES (1) ES2103073T3 (es)
MX (1) MX9301425A (es)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1255763B (it) * 1992-05-15 1995-11-15 Franco Rivetti Procedimento per la preparazione di isocianati alchilici
US5298651A (en) * 1992-10-15 1994-03-29 Monsanto Company Process for preparing isocyanates using phosphazine catalysts
US5233010A (en) * 1992-10-15 1993-08-03 Monsanto Company Process for preparing isocyanate and carbamate ester products
US5349081A (en) * 1993-01-21 1994-09-20 Monsanto Company Process for preparing isocyanates
DE4331085A1 (de) * 1993-09-13 1995-03-16 Basf Ag Stabile, nach phosgenfreien Verfahren erhältliche Polyisocyanatzusammensetzungen und ein Verfahren zu ihrer Herstellung
US5451697A (en) * 1993-12-27 1995-09-19 Monsanto Company Process for preparing isocyanates
US5380855A (en) * 1994-02-04 1995-01-10 Monsanto Company Process for preparing N,N-substituted carbamoyl halides
US6204382B1 (en) * 1994-08-05 2001-03-20 Cytec Technology Corp. Carboxylated amino-1,3,5-triazines, derivatives thereof and processes for preparing the same
US5696290A (en) * 1994-09-12 1997-12-09 Monsanto Company Synthesis of penta-substituted guanidines
CN109280144A (zh) * 2018-09-21 2019-01-29 中国科学院长春应用化学研究所 二氧化碳可逆保护的扩链交联剂及其制备方法与应用
CN111825575A (zh) * 2019-04-23 2020-10-27 临沂斯科瑞聚氨酯材料有限公司 一种多金属氧酸盐高效制备甲苯二异氰酸酯化合物的方法
CN111825574A (zh) * 2019-04-23 2020-10-27 临沂斯科瑞聚氨酯材料有限公司 一种多金属氧酸盐高效催化制备二苯基甲烷二异氰酸酯的方法
CN110066229B (zh) * 2019-05-31 2021-07-20 上海应用技术大学 一种二甲基联苯二异氰酸酯的制备方法
CN110105247B (zh) * 2019-05-31 2021-07-20 上海应用技术大学 一种4,4’-二环己基甲烷二异氰酸酯的制备方法
CN110066228B (zh) * 2019-05-31 2021-07-20 上海应用技术大学 一种1,5-萘二异氰酸酯的制备方法
CN110105250B (zh) * 2019-05-31 2021-07-16 上海应用技术大学 一种异佛尔酮二异氰酸酯的制备方法
CN110105248B (zh) * 2019-05-31 2021-07-20 上海应用技术大学 一种甲苯二异氰酸酯的制备方法
CN110105249B (zh) * 2019-05-31 2021-07-20 上海应用技术大学 一种4,4’二苯基甲烷二异氰酸酯的制备方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3481967A (en) * 1966-04-01 1969-12-02 Olin Mathieson Process for preparing aromatic isocyanates
US4064151A (en) * 1976-05-17 1977-12-20 United Carbide Corporation Halosilyl carbamates
US4192815A (en) * 1978-06-22 1980-03-11 Glushakov Sergei N Method of preparing isocyanates
US4341898A (en) * 1981-05-18 1982-07-27 Air Products And Chemicals, Inc. Synthesis of isocyanates from nitroalkanes
DE3346719A1 (de) * 1983-12-23 1985-07-04 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von ammoniumcarbamat

Also Published As

Publication number Publication date
MX9301425A (es) 1993-11-01
EP0566555A2 (en) 1993-10-20
JPH069537A (ja) 1994-01-18
CA2091666A1 (en) 1993-09-17
EP0566555A3 (en) 1995-02-15
DE69310992D1 (de) 1997-07-03
DE69310992T2 (de) 1998-01-02
US5189205A (en) 1993-02-23
ATE153654T1 (de) 1997-06-15
CA2091666C (en) 1999-06-15
JP3420604B2 (ja) 2003-06-30
EP0566555B1 (en) 1997-05-28

Similar Documents

Publication Publication Date Title
MX9301425A (es) Procedimiento para preparar isocianatos.
PT89218A (pt) Processo para a preparacao continua de mono-isocianatos ou de poli-isocianatos
DE69222972D1 (de) Herstellung von Urethan- und Carbonatprodukten
EP0205702A3 (en) Method of making polyamide-imide foams
DE69019651D1 (de) Chemisches Treibmittel.
MX9306411A (es) Procedimiento para preparar isocianatos.
MX9400552A (es) Procedimiento para preparar isocianatos.
ATE151415T1 (de) Verfahren zur herstellung von organischen carbamaten
ES8705495A1 (es) Un procedimiento para preparar un poliuretano
BR8803202A (pt) Processo para a preparacao de espumas de poliureia;espuma de poliureia
ES459137A1 (es) Procedimiento para la fabricacion de nitrosoureas 1,3 disus-tituidas asimetricamente.
CA2178750A1 (en) Process for preparing isocyanates
IN164714B (es)
ATE291049T1 (de) Verfahren zur herstellung von polyisocyanaten mit biuretstruktur
GB1554362A (en) Manufacture of isocyanates from substituted ureas
SE8105105L (sv) Sett att framstella karbamid
SE8600596L (sv) Forfarande for framstellning av en trisubstituerad n-fenykarbamid liksom de produkter som erhalles genom detta forfarande
DE59007989D1 (de) Verfahren zur Herstellung unsymmetrisch substituierter Harnstoffe.
DE3855994D1 (de) N-(Polyoxyalkyl)-N-(alkyl)amine
ATE1747T1 (de) Verfahren zur herstellung von urethanen.
IT1277443B1 (it) Procedimento per la preparazione di soluzioni di carbammati metallici n-alchil sostituiti e loro uso
BR8801688A (pt) Processo da etapa unica para a preparacao de poliaminas,poliamidas obtidas e processo para preparacao de poliuretano(ureias)
FR2433509A1 (fr) Procede de preparation d'isocyanates
DE3685250D1 (de) Verfahren zur herstellung von carbamidsaeurechloriden sekundaerer amine.
ATE162178T1 (de) Verfahren zur herstellung von 2- nitrobenzaldehyden

Legal Events

Date Code Title Description
FG2A Definitive protection

Ref document number: 566555

Country of ref document: ES