Process for obtaining narrow molecular weight distribution in vinyl aromatic mass polymerization system
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United States of America Patent
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Dec 15, 1987
Issued Date -
N/A
app pub date -
May 10, 1984
filing date -
Apr 29, 1982
priority date (Note) -
Expired
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Abstract
In a process for the mass polymerization of vinyl aromatic monomer wherein vinyl aromatic monomer is polymerized in successive stages of increasing temperature, the improvement which narrows the molecular weight distribution of the resulting polymer comprising incorporating a polymerization inhibiting agent into a polymerizing mass at a point where about 60 to about 95% of monomer is converted to polymer.
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