Fibers and filters containing said fibers

Details Fibers and filters containing said fibers Fibers and filters containing said fibers

1989-01-23

1990-03-13

Hart, Charles

Gas separation

Two or more separators

Plies or layers of different characteristics or orientation

55489, 55528, 428373, 525177, B01D 4600

Patent

active

049080520

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.

REFERENCES:
patent: 3359344 (1967-12-01), Fukushima et al.
patent: 3534120 (1970-10-01), Ando et al.
patent: 3900549 (1975-08-01), Yamana et al.
patent: 4552603 (1985-11-01), Harris et al.
patent: 4609710 (1986-09-01), Iohara et al.
patent: 4784892 (1988-11-01), Storey et al.

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