摘要 |
A unique thermoplastic olefin composition having: (a) at least 40 percent by weight of a propylene-alpha olefin copolymer based on the total weight of polymers in the composition, the propylene-alpha olefin copolymer having at least 60 percent by weight units derived from propylene, at least 6 percent by weight units derived from an alpha olefin, a molecular weight distribution less than 3.5, and a broad composition distribution; and (b) at least 20 percent by weight of a polypropylene based on the total weight of polymers in the composition, the polypropylene having at least 93 percent by weight units derived from propylene, a molecular weight distribution of greater than 3.5, a heat of fusion greater than the heat of fusion exhibited by the propylene-alphaolefin copolymer, and a melting point T<SUB>max </SUB>of at least 120<SUP>°</SUP>C.
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申请人 |
DOW GLOBAL TECHNOLOGIES INC.;TAU, LI-MIN;CHEUNG, YUNWA, W.;DIEHL, CHARLES, F.;HAZLITT, LONNIE, G. |
发明人 |
TAU, LI-MIN;CHEUNG, YUNWA, W.;DIEHL, CHARLES, F.;HAZLITT, LONNIE, G. |