Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1979-01-11
1980-09-02
Jacobs, Lewis T.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 237R, 260DIG31, C08L 9100
Patent
active
042205735
ABSTRACT:
The instant invention relates to unique and novel ionic polymer compositions which are characterized as being processable at high temperatures, for example, 200.degree. C., while retaining adequate physical properties at both room temperature and elevated temperatures which are below the processing temperature. The ionic polymer compositions include a metal neutralized sulfonated polymer which is plasticized with a preferential plasticizer, at a concentration level of about at least 7 parts by weight per 100 parts of the metal neutralized sulfonated polymer. The preferential plasticizer acts to disrupt the ionic association of the metal or ammonium salt groups of the neutralized sulfonated polymer, thus allowing the ionic polymer to act as a noncrosslinked material at the processing temperature. When the composition is in this state, it can be compounded with oils, fillers, etc. The plasticized metal neutralized sulfonated polymer has excellent physical properties at room temperature and up to 100.degree. C. and more than adequate processability at temperatures of from 200.degree. C. and above thereby providing a proper balance of rheological and physical properties. Preferably, the ionic polymer is an ionic elastomer having from 0.2 to 25 mole % pendant acid groups, for example, carboxylic, phosphonic and sulfonic acid groups. Preferably, the pendant acid groups are sulfonic acid groups.
REFERENCES:
patent: 3642728 (1972-02-01), Canter
patent: 3847854 (1974-11-01), Canter et al.
patent: 3974241 (1976-08-01), Lundberg et al.
Bock Jan
Thame Neville G.
Westerman Lowell
Exxon Research & Engineering Co.
Jacobs Lewis T.
Nanfeldt Richard E.
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