MX9301425A - Procedimiento para preparar isocianatos. - Google Patents

Procedimiento para preparar isocianatos.

Info

Publication number
MX9301425A
MX9301425A MX9301425A MX9301425A MX9301425A MX 9301425 A MX9301425 A MX 9301425A MX 9301425 A MX9301425 A MX 9301425A MX 9301425 A MX9301425 A MX 9301425A MX 9301425 A MX9301425 A MX 9301425A
Authority
MX
Mexico
Prior art keywords
ammonium carbamate
carbamate salt
procedure
preparing isocyanates
electrophilic
Prior art date
Application number
MX9301425A
Other languages
English (en)
Inventor
William Dennis Mcghee
Thomas Edward Waldman
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
Publication of MX9301425A publication Critical patent/MX9301425A/es

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 procedimiento para preparar isocianatos que comprende (a) poner en contacto dióxido de carbono y una amina primaria en la ausencia de un solvente orgánico aprótico y una base de nitrógeno orgánica para reducir la sal de carbamato de amonio correspondiente, y (b) hacer reaccionar la sal de carbamato de amonio con un agente deshidratador electrofílico u oxofílico para producir el isocianato correspondiente.
MX9301425A 1992-03-16 1993-03-15 Procedimiento para preparar isocianatos. MX9301425A (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
MX9301425A true MX9301425A (es) 1993-11-01

Family

ID=25313377

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9301425A MX9301425A (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
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
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
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
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
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
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

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
DE69310992T2 (de) 1998-01-02
ATE153654T1 (de) 1997-06-15
CA2091666A1 (en) 1993-09-17
DE69310992D1 (de) 1997-07-03
US5189205A (en) 1993-02-23
ES2103073T3 (es) 1997-08-16
JPH069537A (ja) 1994-01-18
EP0566555A3 (en) 1995-02-15
EP0566555B1 (en) 1997-05-28
JP3420604B2 (ja) 2003-06-30
EP0566555A2 (en) 1993-10-20
CA2091666C (en) 1999-06-15

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