Method for producing graft-modified copolymers
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United States of America Patent
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Aug 2, 1994
Grant Date -
N/A
app pub date -
Apr 30, 1993
filing date -
Apr 30, 1992
priority date (Note) -
Expired
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Abstract
A method for producing a graft-modified copolymer comprising the step of subjecting 100 parts by weight of an unsaturated copolymer comprising an .alpha.-olefin of 3 to 12 carbon atoms and a cyclic olefin represented by the following formula (I), and 0.1 to 300 parts by weight of a radically polymerizable monomer to the radical polymerization conditions: ##STR1## wherein R.sup.1 is a C.sub.2-5 alkylidene group or a C.sub.2-5 alkenyl group, R.sup.2 is a C.sub.1-5 hydrocarbon radical or H, and n is 0, 1 or 2. The graft-modified copolymer is imparted with various properties which are attributed to the polymer chain formed from the radically polymerizable monomer, without the excellent properties inherent in an .alpha.-olefin polymer being impaired. The copolymer is excellent in compatibility with other resins.
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