This invention relates to improved polymer compositions comprising a major amount of {HEAD ~ a linear alternating polymer} of carbon monoxide and at least one ethylenically unsaturated hydrocarbon and {TAIL ~ minor amounts}, relative to the polymer, of glass fiber reinforcement and mica 
This invention relates to improved polymer compositions comprising a major amount of { HEAD ~ a linear alternating polymer } of carbon monoxide and at least one ethylenically unsaturated hydrocarbon and { TAIL ~ minor amounts } , relative to the polymer , of glass fiber reinforcement and mica
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