Ionomers having improved low temperature properties
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United States of America Patent
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Sep 1, 1987
Issued Date -
N/A
app pub date -
Mar 20, 1984
filing date -
Mar 21, 1983
priority date (Note) -
Expired
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Abstract
Ionomers of ethylene, unsaturated carboxylic acid and softening comonomer, e.g. alkyl acrylate and/or alkyl vinyl ether having improved low temperature properties are obtained by direct or graft copolymerization at a temperature of from about 100.degree. to about 200.degree. C., followed by neutralization of the carboxylic acid groups with metal ions, such ionomers being characterized by a low level of chain branching of up to about 5.5 chain branches/1000 backbone methylene units.
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