Cycloolefin type random copolymer compositions and uses thereof
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United States of America Patent
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Oct 17, 1989
Grant Date -
N/A
app pub date -
Apr 29, 1988
filing date -
May 1, 1987
priority date (Note) -
Expired
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Abstract
Compositions comprising (A) cycloolefin random copolymer containing an ethylene component, and a cycloolefin component represented by the general formula [I] or [II] and having an intrinsic viscosity of 0.05-10 dl/g as measured at 135.degree. C. in decalin and a softening temperature (TMA) not lower than 70.degree. C., and (B) a cycloolefin random copolymer containing an ethylene component, and a cycloolefin component represented by the general formula [I] or [II] and having an intrinsic viscosity of 0.01-5 dl/g as measured at 135.degree. C. in decalin and a softening temperature (TMA) of below 70.degree. C., the weight ratio of said (A) component/(B) component ranging from 100/0.1 to 100/10. The composition is particularly useful for molding an information recording base board.
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