Hydrophilic filaments and fibres of polycarbonates with a high second order transition temperature
AssigneeBayer Aktiengesellschaft
InventorsUlrich Reinehr, Bela von Falkai, Horst Wilschinsky
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Abstract
Dry-spun hydrophilic core-jacket filaments and fibres of polycarbonates having a porosity and a water retention capacity of at least 10%, a mercury density of less than 1.0 g/cc, a strength of at least 1.5 cN/dtex and a second order transition temperature of at least 125.degree. C. and a method for producing said filament and fibres by a dry-spinning process, wherein, immediately on leaving the spinnerette but before solidifying, the filaments are brought into contact with steam.
Claims2
Dry spun, hydrophilic core-jacket filaments and fibres of polycarbonates having a porosity and a water retention capacity of at least 10%, a mercury density of less than 1.0 g/cc, a strength of at least 1.5 cN/dtex and a second order transition temperature of at least 125.degree. C.
Dependencies are inferred from the claim text.