Process for preparing light colored petroleum resins and resins produced thereby (CS-203)
US4391961A · kind A · utility
9Cited by
11References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1981 |
| Grant date | Jul 5, 1983 |
| Priority date | — |
| Expiry date | Apr 9, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/943
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Petroleum resins of lightened color while retaining satisfactory melting point and compatibility are provided by a process which comprises heat soaking a petroleum cracking or reforming fraction containing cationically polymerizable hydrocarbons and from 2 to more than 0.5 weight percent of cyclodienes until the cyclodiene content is no more than 0.5 weight percent distilling said heat soaked petroleum fraction and polymerizing said distilled petroleum fraction in the presence of a polymerization catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.