Manufacture of halophenols
Granted 2 May 1978 · no office action yet
Current assignee: Imperial Chemical Industries Limited · originally Imperial Chemical Industries PLC
Law firm: Law firm · Log in to unlock
Attorney: Attorney · Log in to unlock
Inventors: John Brewster Rose · Examiner: · AU 126 · TC 1200
Life of the patent
2 dated eventsAbstract
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- B01J27/00
- C07C45/81
- C07C49/825
- C07C49/83
- C07C45/00
- C07C45/79
- C07C67/00
- C07B61/00
- C07C45/46
- C07C45/78
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Log in to unlockWorldwide family
5 members · 5 offices›IP5 & PCT — 2 members
| Office | Publication | Kind | Published | Filed | Status | Title |
|---|---|---|---|---|---|---|
| USthis patent | US-T970006-I4 | I4 | 2 May 1978 | 1 Jul 1977 | granted | Manufacture of halophenols |
| JP | JP-S539735-A | A | 28 Jan 1978 | 9 Jul 1977 | published | Process for preparing halophenol |
›Other offices — 3 members
| Office | Publication | Kind | Published | Filed | Status | Title |
|---|---|---|---|---|---|---|
| DE | DE-2730991-A1 | A1 | 12 Jan 1978 | 8 Jul 1977 | published | Herstellung von halogenphenolende |
| FR | FR-2357517-A1 | A1 | 3 Feb 1978 | 8 Jul 1977 | published | Procede de production d'halogenophenolsfr |
| GB | GB-1574441-A | A | 10 Sep 1980 | 9 Jul 1976 | published | Preparation of hydroxybenzophenones |
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