BR8502633A - METHOD OF PREPARATION OF 2,3,5,6-TETRACLOROPYRIDINE - Google Patents

METHOD OF PREPARATION OF 2,3,5,6-TETRACLOROPYRIDINE

Info

Publication number
BR8502633A
BR8502633A BR8502633A BR8502633A BR8502633A BR 8502633 A BR8502633 A BR 8502633A BR 8502633 A BR8502633 A BR 8502633A BR 8502633 A BR8502633 A BR 8502633A BR 8502633 A BR8502633 A BR 8502633A
Authority
BR
Brazil
Prior art keywords
tetracloropyridine
preparation
Prior art date
Application number
BR8502633A
Other languages
Portuguese (pt)
Inventor
Paula Lee Humphreys
Thomas J Dietsche
Original Assignee
Dow Chemical 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 Dow Chemical Co filed Critical Dow Chemical Co
Priority to BR8502633A priority Critical patent/BR8502633A/en
Priority claimed from EP19850106739 external-priority patent/EP0204848B1/en
Publication of BR8502633A publication Critical patent/BR8502633A/en

Links

BR8502633A 1985-05-31 1985-05-31 METHOD OF PREPARATION OF 2,3,5,6-TETRACLOROPYRIDINE BR8502633A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BR8502633A BR8502633A (en) 1985-05-31 1985-05-31 METHOD OF PREPARATION OF 2,3,5,6-TETRACLOROPYRIDINE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR8502633A BR8502633A (en) 1985-05-31 1985-05-31 METHOD OF PREPARATION OF 2,3,5,6-TETRACLOROPYRIDINE
EP19850106739 EP0204848B1 (en) 1985-05-31 1985-05-31 Preparation of symmetrical tetrachloropyridine from chlorinated beta - (trichloromethyl) pyridines employing a catalyst

Publications (1)

Publication Number Publication Date
BR8502633A true BR8502633A (en) 1987-01-06

Family

ID=25664044

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8502633A BR8502633A (en) 1985-05-31 1985-05-31 METHOD OF PREPARATION OF 2,3,5,6-TETRACLOROPYRIDINE

Country Status (1)

Country Link
BR (1) BR8502633A (en)

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Legal Events

Date Code Title Description
B21A Extinguishment of a patent or of a certificate of addition of invention: extinguishment - article 78, item i of industrial property law

Free format text: PATENTE EXTINTA EM 31/05/2000