Production of dihydroxydiphenyl alkanes
US4154969A · kind A · utility
1Cited by
1References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 24, 1977 |
| Grant date | May 15, 1979 |
| Priority date | — |
| Expiry date | Mar 24, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C37/18
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A combination of zinc oxide and zinc bromide employed as a catalyst for the reaction between phenol and a 1,2-dihaloethane wherein the halogen is chlorine, bromine or iodine provides for increased reaction rates as compared to the use of either zinc compound separately as catalyst and elimination of the induction period characteristic of the reaction when zinc oxide is used as the catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.