CA1176647A - Obtention d'isocyanates a partir d'esters d'acides carbamiques aromatiques (urethanes) - Google Patents

Obtention d'isocyanates a partir d'esters d'acides carbamiques aromatiques (urethanes)

Info

Publication number
CA1176647A
CA1176647A CA000395987A CA395987A CA1176647A CA 1176647 A CA1176647 A CA 1176647A CA 000395987 A CA000395987 A CA 000395987A CA 395987 A CA395987 A CA 395987A CA 1176647 A CA1176647 A CA 1176647A
Authority
CA
Canada
Prior art keywords
carbamate
group
aromatic
catalyst
reaction
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
Application number
CA000395987A
Other languages
English (en)
Inventor
Ralph J. Spohn
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.)
ExxonMobil Technology and Engineering Co
Original Assignee
Exxon Research and Engineering 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
Priority claimed from US06/343,584 external-priority patent/US4487713A/en
Application filed by Exxon Research and Engineering Co filed Critical Exxon Research and Engineering Co
Application granted granted Critical
Publication of CA1176647A publication Critical patent/CA1176647A/fr
Expired 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
CA000395987A 1982-01-28 1982-02-10 Obtention d'isocyanates a partir d'esters d'acides carbamiques aromatiques (urethanes) Expired CA1176647A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US343,584 1982-01-28
US06/343,584 US4487713A (en) 1981-06-26 1982-01-28 Production of isocyanates from esters of aromatic carbamic acids (urethanes)

Publications (1)

Publication Number Publication Date
CA1176647A true CA1176647A (fr) 1984-10-23

Family

ID=23346698

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000395987A Expired CA1176647A (fr) 1982-01-28 1982-02-10 Obtention d'isocyanates a partir d'esters d'acides carbamiques aromatiques (urethanes)

Country Status (9)

Country Link
JP (1) JPS58128354A (fr)
AU (1) AU8054682A (fr)
BR (1) BR8200861A (fr)
CA (1) CA1176647A (fr)
ES (1) ES8304927A1 (fr)
FR (1) FR2520359A1 (fr)
GB (1) GB2113673B (fr)
IT (1) IT1147624B (fr)
NL (1) NL8200630A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3420114A1 (de) * 1984-05-30 1985-12-05 Bayer Ag, 5090 Leverkusen Verfahren zur herstellung von uretdiongruppen aufweisenden polyisocyanaten
CN110467546B (zh) * 2018-05-10 2021-03-19 中国科学院过程工程研究所 一种制备间苯二亚甲基二异氰酸酯的方法
CN110423208A (zh) * 2019-08-15 2019-11-08 中国科学院过程工程研究所 一种二苯甲烷二异氰酸酯的制备方法

Also Published As

Publication number Publication date
ES509683A0 (es) 1983-03-16
JPS58128354A (ja) 1983-07-30
GB2113673B (en) 1986-08-06
NL8200630A (nl) 1983-08-16
FR2520359A1 (fr) 1983-07-29
ES8304927A1 (es) 1983-03-16
AU8054682A (en) 1983-08-04
IT8247810A0 (it) 1982-02-17
IT1147624B (it) 1986-11-19
BR8200861A (pt) 1983-10-18
FR2520359B3 (fr) 1985-02-15
GB2113673A (en) 1983-08-10

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Legal Events

Date Code Title Description
MKEC Expiry (correction)
MKEX Expiry