Transparent butadiene-based rubber-reinforced resin and composition containing the same
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United States of America Patent
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Sep 10, 2002
Grant Date -
Dec 13, 2001
app pub date -
Apr 18, 2001
filing date -
Apr 21, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention relates to a transparent butadiene-based rubber-reinforced resin produced by graft-polymerizing monomer components (b) comprising as main components an aromatic vinyl compound, a vinyl cyanide compound and an acrylic or methacrylic acid ester in the presence of particles of a butadiene-based rubber (a), said butadiene-based rubber-reinforced resin comprising, when observed by an electron microscope, a rubber phase having an average particle size of 150 to 350 nm and containing particles having a particle size of less than 150 nm in an amount of not more than 30% by weight and particles having a particle size of more than 350 nm in an amount of not more than 30% by weight; and containing acetone solubles having an intrinsic viscosity [.eta.] of 0.2 to 0.4 dl/g when measured at 30.degree. C. in methyl ethyl ketone.
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