Aromatic sulfonates
US4042618A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1972 |
| Grant date | Aug 16, 1977 |
| Priority date | — |
| Expiry date | Jun 15, 1992 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/6884
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Aromatic sulfonates and fiber and film forming polymers containing these sulfonates, the sulfonates being represented by the general formula: ##STR1## WHEREIN R.sub.1 represents either hydrogen or an alkyl radical containing from 1 to about 6 carbon atoms; n, n.sub.1, n.sub.2 and n.sub.3 each independently represent an integer from 0 to about 6, and n.sub.1 + n.sub.2 + n.sub.3 is equal to or greater than 2 if Y and Z both are hydroxy; Y and Z are selected independently from the class consisting of hydroxy, carboxy, and alkoxycarbonyl, the alkoxy portion of which contains from 1 to about 6 carbon atoms; Ar represents a divalent aromatic radical which may be substituted or unsubstituted; m is an integer equal to the valency of the metal; and R represents a divalent radical, with the proviso that where n is O and Ar is phenylene, the metal is lithium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.