Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – By treating occluded solids
Patent
1990-01-26
1991-11-05
Lorin, Hubert C.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
By treating occluded solids
264 41, 264557, 264563, 26417714, 2642091, 264211, 26421116, 26421114, 21050023, 21050029, D01D 5247, D01D 5253
Patent
active
050630091
ABSTRACT:
A method for making hollow fibers having a selective permeability, wherein a majority of the hollow fibers each has on the periphery thereof 1 to 10 fins extending in the longitudinal direction, and the occupancy ratio y of the sections, defined by the peripheries, of all the hollow fibers exclusive of the fin portions in the hollow fiber bundle to the section, vertical to the axial direction of the hollow fiber bundle, of the inner wall of the shell is within a range defined by the following formula (I):
REFERENCES:
patent: 3605162 (1971-09-01), Long
patent: 4124509 (1978-11-01), Iijima et al.
patent: 4288494 (1981-09-01), Porter et al.
patent: 4332752 (1982-06-01), Henne et al.
patent: 4381325 (1983-04-01), Masuda et al.
Patent Abstracts of Japan, vol. 6, No. 31, Feb. 24, 1982 (C-92 (909).
Chemical Abstracts, vol. 96, No. 8, Feb. 22, 1982, p. 81, ref. no. 53743h.
Patent Abstracts of Japan, vol. 7, No. 289, Dec. 23, 1983 (C-202) (1434).
WPI Derwent, ref. nr. 74-2023V.
Mizutani Shoji
Taneda Nobuo
Lorin Hubert C.
Teijin Limited
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