Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1989-06-01
1990-09-18
Hoke, Veronica P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524371, 524411, C08K 543
Patent
active
049579576
ABSTRACT:
Described are thermoplastic polymer compositions (e.g., nylon) containing a polyhaloaromatic sulfonamide in quantity sufficient to improve the melt flow properties of the polymer. Such sulfonamides contain (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. 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.
REFERENCES:
patent: 3760003 (1973-09-01), Asadorian
patent: 4123411 (1978-10-01), Coran
patent: 4218357 (1980-08-01), Mark et al.
patent: 4254015 (1981-03-01), Thomas et al.
patent: 4399246 (1983-08-01), Hyde
patent: 4486560 (1984-12-01), Thomas
patent: 4745143 (1988-05-01), Mason
Chemical Abstract 58:5671e.
Chemical Abstract 58:3341c
Chemical Abstract 66(9):37571a.
Chemical Abstract 66(3):10128z.
Chemical Abstract 64:8383f.
Pietrewicz David S.
Schleifstein Robert A.
Ethyl Corporation
Hoke Veronica P.
LaRose David E.
Sieberth John F.
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