ES8304927A1 - Production of isocyanates from esters of aromatic carbamic acids (urethanes) - Google Patents

Production of isocyanates from esters of aromatic carbamic acids (urethanes)

Info

Publication number
ES8304927A1
ES8304927A1 ES509683A ES509683A ES8304927A1 ES 8304927 A1 ES8304927 A1 ES 8304927A1 ES 509683 A ES509683 A ES 509683A ES 509683 A ES509683 A ES 509683A ES 8304927 A1 ES8304927 A1 ES 8304927A1
Authority
ES
Spain
Prior art keywords
isocyanates
urethanes
esters
production
carbamic acids
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
ES509683A
Other languages
Spanish (es)
Other versions
ES509683A0 (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 ES8304927A1 publication Critical patent/ES8304927A1/en
Publication of ES509683A0 publication Critical patent/ES509683A0/en
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.
ES509683A 1982-01-28 1982-02-17 "A PROCEDURE FOR PREPARING AT LEAST ONE AROMATIC ISOCYANATE FROM AT LEAST ONE AROMATIC CARBAMATE". Granted ES509683A0 (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
ES8304927A1 true ES8304927A1 (en) 1983-03-16
ES509683A0 ES509683A0 (en) 1983-03-16

Family

ID=23346698

Family Applications (1)

Application Number Title Priority Date Filing Date
ES509683A Granted ES509683A0 (en) 1982-01-28 1982-02-17 "A PROCEDURE FOR PREPARING AT LEAST ONE AROMATIC ISOCYANATE FROM AT LEAST ONE AROMATIC CARBAMATE".

Country Status (9)

Country Link
JP (1) JPS58128354A (en)
AU (1) AU8054682A (en)
BR (1) BR8200861A (en)
CA (1) CA1176647A (en)
ES (1) ES509683A0 (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
NL8200630A (en) 1983-08-16
JPS58128354A (en) 1983-07-30
BR8200861A (en) 1983-10-18
FR2520359A1 (en) 1983-07-29
FR2520359B3 (en) 1985-02-15
GB2113673B (en) 1986-08-06
CA1176647A (en) 1984-10-23
AU8054682A (en) 1983-08-04
IT1147624B (en) 1986-11-19
ES509683A0 (en) 1983-03-16
IT8247810A0 (en) 1982-02-17
GB2113673A (en) 1983-08-10

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