Method of grafting maleic anhydride to polymers
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United States of America Patent
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Aug 9, 1988
Grant Date -
N/A
app pub date -
Sep 5, 1986
filing date -
Sep 5, 1986
priority date (Note) -
Expired
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Abstract
Maleic anhydride can be satisfactorily grafted to polymers at low pressures by feeding the polymer through a co-rotating, twin-screw extruder and injecting the maleic anhydride and a free radical initiator into the extruder. The maleic anhydride and initiator can be pre-mixed in a solvent solution. The solvent and unreacted maleic anhydride can be removed by low pressure devolatilization.
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