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Microporous polyethylene hollow fibers and process of preparing them 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • B01D-047/00
  • B01D-059/10
  • D02G-003/00
출원번호 US-0619431 (1975-10-03)
발명자 / 주소
  • Mahoney Robert D. (Dublin CA) Schneider Stephen E. (Concord CA)
출원인 / 주소
  • The Dow Chemical Company (Midland MI 02)
인용정보 피인용 횟수 : 68  인용 특허 : 0

초록 ▼

Normally hydrophobic, polyethylene hollow fibers having contiguous microporosity are prepared by extruding a heated solution of a polyethylene and an ester from a hollow fiber spinnerette, simultaneously cooling and drawing the forming fibers to a ratio of up to 40 to 1, drawing the gelled fibers to

대표청구항

A microporous hollow fiber in which the porosity is contiguous, the O2 gas permeability is at least 2×105 cc (STP) per cm2 per second per cm Hg. transmembrane pressure differential and said fiber consists essentially of polyethylene.

이 특허를 인용한 특허 (68)

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