Process for the preparation of polyisobutyl hydroxyaromatics
US5300701A · kind A · utility
78Cited by
5References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 28, 1992 |
| Grant date | Apr 5, 1994 |
| Priority date | — |
| Expiry date | Dec 28, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F8/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of a polyisobutyl hydroxyaromatic compound which comprises alkylating a hydroxyaromatic compound in the presence of an acidic alkylation catalyst with a polyisobutene having a number average molecular weight in the range of about 300 to 5,000 and wherein the polyisobutene contains at least about 70% of a methylvinylidene isomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.