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US 4,908,052 AGranted
Fibers and filters containing said fibers
AssigneeAllied-Signal Inc.
InventorsTheodore Largman, Frank Mares, Clarke A. Rodman
Life of this patent
Estimating the term…
Abstract
This invention relates to a fiber comprising a major amount of a continous phase comprising one or more melt processible polyesters of fiber forming molecular weight, and a minor amount of one or more polyolefins non-uniformly dispersed in said continuous phase such that the concentration of polyolefins at or near the surface of said fiber is greater than the concentration of polyesters at or near the surface of said fiber, and a process for preparing said fiber.
Claims34
A filter element for removal of entrained solid particles from a fluid stream, each element comprising:
- a body comprised of a network of fibers positioned to entrap all or a portion of said particles in said stream passing through said body, said fibers comprising a major amount of a continuous phase comprising one or more melt processible polyesters of fiber forming molecular weight and a minor amount of one or more melt processible polyolefins of fiber forming molecular weight dispersed in said continuous phase such that the concentration of said polyolefins at or near the surface of said fiber is greater than the concentration of said polyesters at or near the surface of said fibers.
Dependencies are inferred from the claim text.