Compatibilization of polymer blends
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United States of America Patent
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Nov 23, 1993
Issued Date -
N/A
app pub date -
Aug 26, 1992
filing date -
Mar 22, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Compatibilizing agents suitable for blending otherwise immiscible polymers comprise a block or graft copolymer in which at least one of the block segments is formed by a living anionic polymerization and thereafter chemically converted to provide a polymer having at least one functional end group. The functional groups of the polymer blocks thus formed are reacted with a functionalized monomer, or an oligomer to provide a second block polymer segment. Compatibilizing agents containing more than two blocks may be formed in similar fashion. The compatibilizing agents are used to provide uniform blends of polar and non-polar polymers having superior uniformity and other physical properties.
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