Polymerizing C.sub.5 and C.sub.6 olefins and diolefins with 3.degree. hydrocarbyl halide to produce narrow molecular weight petroleum resins having low softening points
US4068062A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 16, 1976 |
| Grant date | Jan 10, 1978 |
| Priority date | — |
| Expiry date | Jul 16, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L57/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A petroleum resin is prepared by a process which comprises polymerizing using a Friedel-Crafts catalyst: PA1 A. a petroleum resin feed comprising C.sub.5 and C.sub.5 diolefins, C.sub.6 olefins and C.sub.6 diolefins or a mixture of C.sub.5 and C.sub.6 olefins and diolefins, said feed being obtained from the cracking of petroleum feedstock and PA1 B. at least 0.5 wt.% based on the petroleum resin feed of a tertiary hydrocarbyl halide. The resulting resin usually has a softening point of 20.degree. to 125.degree. C. These resins have an extremely narrow molecular weight distribution and hence have good wax compatibility, viscosity, flexibility and tackifying properties for rubber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.