Oriented, shape articles of lyotropic/thermally-consolidatable polymer blends
AssigneeE. I. Du Pont de Nemours and Company
InventorsJohn C. Coburn, Hung H. Yang
Life of this patent
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Abstract
An oriented, shaped article comprising at least about 55% and less than about 80% by weight of a first polymer phase of at least one lyotropic polymer and at least about 20% and less than about 45% by weight of a second polymer phase of at least one thermally-consolidatable polymer and consolidated parts made therefrom.
Claims19
An oriented, shaped article comprising 55% to 80% by weight of a first polymer phase consisting essentially of at least one lyotropic para-aramid polymer and 20% to 45% by weight of a second polymer phase consisting essentially of at least one thermoplastic polyamide, said first polymer phase being longitudinally continuous fibrils extending along the length of the article in the direction of orientation of said article when viewed at a magnification of 9000.times. in a transmission electron micrograph and with said second polymer phase interpenetrating said first polymer phase throughout said article, wherein said article is formed from a biphasic spinning dope having an anisotropic phase consisting essentially of the lyotropic para-aramid polymer and an isotropic phase consisting essentially of the thermoplastic polyamide.
A fiber comprising 55% to 80% by weight of a first polymer phase consisting essentially of at least one para-aramid polymer and 20% to 45% by weight of a second polymer phase consisting essentially of at least one thermoplastic polyamide, said first polymer phase being longitudinally continuous fibrils extending along the length of said fiber when viewed at a magnification of 9000.times. in a transmission electron micrograph and with said second polymer phase interpenetrating said first polymer phase throughout the fiber, wherein said fiber is formed from a biphasic spinning dope having an anisotropic phase consisting essentially of the para-aramid polymer and an isotropic phase consisting essentially of the thermoplastic polyamide.
Dependencies are inferred from the claim text.