Polymer compositions
US5264474A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1991 |
| Grant date | Nov 23, 1993 |
| Priority date | — |
| Expiry date | Sep 18, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/43
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Described are thermoplastic or thermoset polymer and resin compositions (e.g., nylon, polyvinylchloride, phenolics, etc.) containing a bis-sulfonamide or polyhaloaromatic monosulfonamide in quantity sufficient to plasticize the resins and polymers. The polyhaloaromatic monosulfonamide contains (a) from 7 to 30 carbon atoms, (b) from 2 to 12 chlorine and/or bromine atoms, (c) one nitrogen atom, (d) an aromatic group, bonded to the sulfur atom, in which at least two chlorine or at least two bromine atoms or at least one chlorine atom and at least one bromine atom are directly bonded to the aromatic ring system, and (e) one or two aliphatic, cycloaliphatic, or aromatic organic groups bonded to the nitrogen atom, one such organic group, when an aromatic group, optionally being substituted by one or more bromine and/or chlorine atoms. The bis-sulfonamide contains at least two aromatic rings and from 14 to 30 carbon atoms in the molecule. These sulfonamides are of advantage in that they have relatively low volatilities and good thermal stability at polymer processing temperatures and serve as flame retardants therein. Bis-sulfonamides having an alkylene bridge group between two sulfonami…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.