Process for producing a block copolymer resin and product thereof
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United States of America Patent
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Apr 17, 1990
Issued Date -
N/A
app pub date -
Nov 14, 1988
filing date -
Dec 22, 1986
priority date (Note) -
Expired
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Abstract
A continuous process as disclosed which produces a clear, high impact block copolymer having a vinyl aryl monomer content of at least 70 percent of the block copolymer. This continuous process involves the continuous preparation of a multiblock copolymer which comprises the alternate feeding of monomer streams to a reaction zone wherein a product stream is withdrawn from the polymerization system at the same rate as the total rate of the feed streams.
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