Method for sulfonating organic materials
US4220739A · kind A · utility
25Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 28, 1978 |
| Grant date | Sep 2, 1980 |
| Priority date | — |
| Expiry date | Jul 28, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F8/36
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Organic materials such as polyethylene, polystyrene and polypropylene are more efficiently sulfonated by contacting them with an essentially dry gaseous mixture of sulfur trioxide and chlorine. Sulfonated organic polymers prepared by this process are adhesive, antistatic and highly impermeable to oleophilic materials such as gasoline, and common hydrocarbon solvents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.