FR2520359B3 - - Google Patents

Info

Publication number
FR2520359B3
FR2520359B3 FR8202594A FR8202594A FR2520359B3 FR 2520359 B3 FR2520359 B3 FR 2520359B3 FR 8202594 A FR8202594 A FR 8202594A FR 8202594 A FR8202594 A FR 8202594A FR 2520359 B3 FR2520359 B3 FR 2520359B3
Authority
FR
France
Prior art keywords
converted
atmospheric pressure
liquid phase
catalyst containing
corresponding isocyanates
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
FR8202594A
Other languages
French (fr)
Other versions
FR2520359A1 (en
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
Publication of FR2520359A1 publication Critical patent/FR2520359A1/en
Application granted granted Critical
Publication of FR2520359B3 publication Critical patent/FR2520359B3/fr
Granted 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)

Abstract

Aromatic carbamates are converted to their corresponding isocyanates by liquid phase thermolysis at atmospheric pressure or above in the presence of a catalyst containing Ti, Sn, Sb, or Zr.
FR8202594A 1982-01-28 1982-02-17 PROCESS FOR THE PRODUCTION OF ISOCYANATES FROM ESTERS OF AROMATIC CARBAMIC ACIDS Granted FR2520359A1 (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
FR2520359A1 FR2520359A1 (en) 1983-07-29
FR2520359B3 true FR2520359B3 (en) 1985-02-15

Family

ID=23346698

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8202594A Granted FR2520359A1 (en) 1982-01-28 1982-02-17 PROCESS FOR THE PRODUCTION OF ISOCYANATES FROM ESTERS OF AROMATIC CARBAMIC ACIDS

Country Status (9)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3420114A1 (en) * 1984-05-30 1985-12-05 Bayer Ag, 5090 Leverkusen METHOD FOR PRODUCING POLYISOCYANATES HAVING URETDION GROUPS
CN110467546B (en) * 2018-05-10 2021-03-19 中国科学院过程工程研究所 Method for preparing m-xylylene diisocyanate
CN110423208A (en) * 2019-08-15 2019-11-08 中国科学院过程工程研究所 A kind of preparation method of '-diphenylmethane diisocyanate

Also Published As

Publication number Publication date
ES509683A0 (en) 1983-03-16
JPS58128354A (en) 1983-07-30
GB2113673B (en) 1986-08-06
NL8200630A (en) 1983-08-16
FR2520359A1 (en) 1983-07-29
CA1176647A (en) 1984-10-23
ES8304927A1 (en) 1983-03-16
AU8054682A (en) 1983-08-04
IT8247810A0 (en) 1982-02-17
IT1147624B (en) 1986-11-19
BR8200861A (en) 1983-10-18
GB2113673A (en) 1983-08-10

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