Process for purification of styrenic polymer
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United States of America Patent
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Sep 12, 1995
Issued Date -
N/A
app pub date -
Jan 23, 1995
filing date -
Apr 17, 1992
priority date (Note) -
Expired
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Abstract
There is disclosed a process for purifying a styrene polymer which comprises treating a highly syntiotactic styrene polymer which is produced by using a catalyst composition of (A) an aluminoxane or a specific coordination complex compound and (B) a transition metal compound with a swelling agent (e.g. ethylbenzene) and a deactivating agent (e.g. methanol, ethanol). The process is capable of efficiently purifying the styrene polymer produced by polymerizing a styrene monomer at a high concentration with a high conversion efficiency. Accordingly, the process greatly improves the industrial productivity of highly pure styrene polymer.
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