JPS5468414A - Production of porous hollow polypropylene fibers - Google Patents

Production of porous hollow polypropylene fibers

Info

Publication number
JPS5468414A
JPS5468414A JP13390677A JP13390677A JPS5468414A JP S5468414 A JPS5468414 A JP S5468414A JP 13390677 A JP13390677 A JP 13390677A JP 13390677 A JP13390677 A JP 13390677A JP S5468414 A JPS5468414 A JP S5468414A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
fibers
drawing
heat
elastic recovery
porous hollow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP13390677A
Other versions
JPS6037201B2 (en )
Inventor
Takemoto Kamata
Mizuo Shindo
Takashi Yamamoto
Original Assignee
Mitsubishi Rayon Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Abstract

PURPOSE: To obtain porous hollow polypropylene fibers having improved gas permeabitlity and its stability with time in good productivity, by drawing undrawn hollow fibers having an elastic recovery higher than 60% under specibic conditions, followed by drawing and heat-setting.
CONSTITUTION: Unraum highly oriented fibers, prepared from polypropylene having good melt formability and a relatively low polymerization degree, are heated- treated under tension to give highly oriented crystalline undrawn holoow fibers having an elastic recovery ≥ 60%, preferably ≥ 90%, which are then primarily drawn at- 20W130°C, and secondarily drawn at a temperature above the primary drawing temperature but lower than 165°C, then heat-set at 130W165°C, to improve the shape stability.
USE: Usable for various purposes, e.g. substrates for gas separation ultrafiltration, and reverse osmosis membranes, other aeration, etc.
COPYRIGHT: (C)1979,JPO&Japio
JP13390677A 1977-11-08 1977-11-08 Expired JPS6037201B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13390677A JPS6037201B2 (en) 1977-11-08 1977-11-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13390677A JPS6037201B2 (en) 1977-11-08 1977-11-08

Publications (2)

Publication Number Publication Date
JPS5468414A true true JPS5468414A (en) 1979-06-01
JPS6037201B2 JPS6037201B2 (en) 1985-08-24

Family

ID=15115855

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13390677A Expired JPS6037201B2 (en) 1977-11-08 1977-11-08

Country Status (1)

Country Link
JP (1) JPS6037201B2 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5796302A (en) * 1980-12-09 1982-06-15 Mitsubishi Rayon Co Ltd Optical fiber
JPS5796303A (en) * 1980-12-09 1982-06-15 Mitsubishi Rayon Co Ltd Optical transmission fiber
JPS57104906A (en) * 1980-12-22 1982-06-30 Mitsubishi Rayon Co Ltd Production of optical transmission fiber
JPS57124307A (en) * 1981-01-26 1982-08-03 Mitsubishi Rayon Co Ltd Manufacture of optical fiber
JPS5831306A (en) * 1981-08-20 1983-02-24 Mitsubishi Rayon Co Ltd Production for plastic optical fiber
JPS5878104U (en) * 1981-11-17 1983-05-26
JPS58118603A (en) * 1982-01-07 1983-07-14 Mitsubishi Rayon Co Ltd Production of optical fiber
JPS60139808A (en) * 1983-12-28 1985-07-24 Ube Ind Ltd Production of porous hollow fiber of polypropylene
JPS60139807A (en) * 1983-12-28 1985-07-24 Ube Ind Ltd Production of porous hollow fiber of polypropylene
JPS6186902A (en) * 1984-10-02 1986-05-02 Asahi Medical Kk Porous hollow yarn membrane and its preparation
US5435955A (en) * 1984-12-21 1995-07-25 Ube Industries, Ltd. Process of producing porous polypropylene hollow fiber and film

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5796303A (en) * 1980-12-09 1982-06-15 Mitsubishi Rayon Co Ltd Optical transmission fiber
JPS5796302A (en) * 1980-12-09 1982-06-15 Mitsubishi Rayon Co Ltd Optical fiber
JPS57104906A (en) * 1980-12-22 1982-06-30 Mitsubishi Rayon Co Ltd Production of optical transmission fiber
JPS57124307A (en) * 1981-01-26 1982-08-03 Mitsubishi Rayon Co Ltd Manufacture of optical fiber
JPS5831306A (en) * 1981-08-20 1983-02-24 Mitsubishi Rayon Co Ltd Production for plastic optical fiber
JPS6031764Y2 (en) * 1981-11-17 1985-09-24
JPS5878104U (en) * 1981-11-17 1983-05-26
JPS58118603A (en) * 1982-01-07 1983-07-14 Mitsubishi Rayon Co Ltd Production of optical fiber
JPH0152722B2 (en) * 1982-01-07 1989-11-09 Mitsubishi Rayon Co
JPS60139807A (en) * 1983-12-28 1985-07-24 Ube Ind Ltd Production of porous hollow fiber of polypropylene
JPS60139808A (en) * 1983-12-28 1985-07-24 Ube Ind Ltd Production of porous hollow fiber of polypropylene
JPS6329006B2 (en) * 1983-12-28 1988-06-10 Ube Industries
JPS6329007B2 (en) * 1983-12-28 1988-06-10 Ube Industries
JPS6186902A (en) * 1984-10-02 1986-05-02 Asahi Medical Kk Porous hollow yarn membrane and its preparation
JPH0446171B2 (en) * 1984-10-02 1992-07-29 Asahi Medical Co
US5435955A (en) * 1984-12-21 1995-07-25 Ube Industries, Ltd. Process of producing porous polypropylene hollow fiber and film

Also Published As

Publication number Publication date Type
JPS6037201B2 (en) 1985-08-24 grant

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