USPatentGranted
I4

Manufacture of halophenols

Granted 2 May 1978 · no office action yet

Current assignee: Imperial Chemical Industries Limited · originally Imperial Chemical Industries PLC

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Attorney: Attorney · Log in to unlock

Inventors: John Brewster Rose · Examiner: · AU 126 · TC 1200

Application
812438
filed 1 Jul 1977
Publication
Not published
not published
Patent· this page
US T970006
granted 2 May 1978

Life of the patent

2 dated events
⤢ drag to zoomJul 1977Oct 1977Jan 1978Apr 1978Jul 1978Prosecution
Prosecutionhover for detail · click to open

Abstract

halophenols of formula ##STR1## where X = halogen, are made by condensation of a compound ##STR2## where Z is OH or halogen with a phenol in the presence of anhydrous HF as a catalyst. The compound ##STR3## where X = F, may be made in situ by the reaction of ##STR4## with an alkali metal nitrite in anhydrous HF.

Classifications

13 codes
IPC · International Patent Classification
Section B — Performing operations; transporting
  • B01J27/00
Section C — Chemistry; metallurgy
  • C07C45/81
  • C07C49/825
  • C07C49/83
  • C07C45/00
  • C07C45/79
  • C07C67/00
  • C07B61/00
  • C07C45/46
  • C07C45/78
USPC · US Patent Classification
260/591260/544.D260/515.A

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Pendency
0.8 y
305 days filing → grant
Office actions
0
on the grant's record
Citations: 0 back · 0 forward

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Worldwide family

5 members · 5 offices
US1JP1DE1FR1GB1
this patentIP5 & PCTother officessolid = grantedhover for detail · click to open
Members
5
DOCDB simple family 10279344
Offices
5
US · JP
Granted
1 of 5
grant date present
Non-English titles
2
shown as filed, never translated
›IP5 & PCT — 2 members
OfficePublicationKindPublishedFiledStatusTitle
USthis patentUS-T970006-I4I42 May 19781 Jul 1977grantedManufacture of halophenols
JPJP-S539735-AA28 Jan 19789 Jul 1977publishedProcess for preparing halophenol
›Other offices — 3 members
OfficePublicationKindPublishedFiledStatusTitle
DEDE-2730991-A1A112 Jan 19788 Jul 1977publishedHerstellung von halogenphenolende
FRFR-2357517-A1A13 Feb 19788 Jul 1977publishedProcede de production d'halogenophenolsfr
GBGB-1574441-AA10 Sep 19809 Jul 1976publishedPreparation of hydroxybenzophenones

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