| 摘要 |
Improved compositions comprise polymer blends of (1) a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon with (2) a high rubber graft copolymer, and, optionally, (3) an acidic polymer containing moieties of an alpha -olefin and an alpha , beta -ethylenically unsaturated carboxylic acid. The blends demonstrate improved toughness and impact strength at both ambient and low temperatures.
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