CA2199514A1 - Procede d'elaboration de filaments et de fibres de polybenzazole - Google Patents

Procede d'elaboration de filaments et de fibres de polybenzazole

Info

Publication number
CA2199514A1
CA2199514A1 CA 2199514 CA2199514A CA2199514A1 CA 2199514 A1 CA2199514 A1 CA 2199514A1 CA 2199514 CA2199514 CA 2199514 CA 2199514 A CA2199514 A CA 2199514A CA 2199514 A1 CA2199514 A1 CA 2199514A1
Authority
CA
Canada
Prior art keywords
filament
water
dope
washing
percent
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.)
Abandoned
Application number
CA 2199514
Other languages
English (en)
Inventor
Ashish Sen
Yoshihiko Teramoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Chemical Co
Original Assignee
Individual
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
Priority claimed from US08/500,651 external-priority patent/US5525638A/en
Application filed by Individual filed Critical Individual
Publication of CA2199514A1 publication Critical patent/CA2199514A1/fr
Abandoned legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/74—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polycondensates of cyclic compounds, e.g. polyimides, polybenzimidazoles

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

Procédé en continu d'extraction de l'acide polyphosphoric d'un filament dopé au polybenzazole. Ce procédé comprend les étapes suivantes: (a) le filament dopé est exposé à l'eau ou à un mélange d'eau et d'acide polyphosphorique dans des conditions suffisantes pour abaisser la teneur en phosphore du filament à moins de 10,000 ppm en poids; puis (b) le filament dopé est soumis à une solution aqueuse d'une base non-organique dans des conditions suffisantes pour convertir au moins 50 % des groupes acides polyphosphoriques présents dans le filament en un sel de la base et de l'acide. On a constaté que le fait de soumettre un filament à une solution de base après l'avoir lavé pour extraire la plus grande partie du phosphore résiduel entraîne une amélioration de la résistance initiale à la traction de ce filament ainsi qu'une amélioration de la préservation de la résistance à la traction et/ou du poids moléculaire (du polymère polybenzazole) après une exposition à la lumière et/ou à des températures élevées.
CA 2199514 1994-09-30 1995-09-08 Procede d'elaboration de filaments et de fibres de polybenzazole Abandoned CA2199514A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US31626694A 1994-09-30 1994-09-30
US08/316,266 1994-09-30
US08/500,651 US5525638A (en) 1994-09-30 1995-07-12 Process for the preparation of polybenzazole filaments and fibers
US08/500,651 1995-07-12

Publications (1)

Publication Number Publication Date
CA2199514A1 true CA2199514A1 (fr) 1996-04-11

Family

ID=26980332

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2199514 Abandoned CA2199514A1 (fr) 1994-09-30 1995-09-08 Procede d'elaboration de filaments et de fibres de polybenzazole

Country Status (6)

Country Link
EP (1) EP0783603B1 (fr)
CN (1) CN1159836A (fr)
CA (1) CA2199514A1 (fr)
DE (1) DE69513844T2 (fr)
MX (1) MX9702304A (fr)
WO (1) WO1996010661A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60128915T2 (de) * 2000-04-28 2008-02-14 Toyo Boseki K.K. Polybenzazolfaser und ihre verwendung
ES2364969T3 (es) * 2001-11-23 2011-09-19 Inventio Ag Ascensor con medios de transmisión en forma de correa, en particular con una correa trapezoidal de dentado interior como medio portante y/o agente motor.
ATE409761T1 (de) 2002-06-26 2008-10-15 Toyo Boseki Polybenzazolfaser und deren verwendung
US7189346B2 (en) 2004-07-22 2007-03-13 E. I. Du Pont De Nemours And Company Polybenzazole fibers and processes for their preparation
KR20080034830A (ko) * 2005-03-28 2008-04-22 이 아이 듀폰 디 네모아 앤드 캄파니 측쇄 히드록실 기 및 양이온을 가진 폴리아렌아졸 중합체섬유
ATE495287T1 (de) 2005-03-28 2011-01-15 Du Pont Verfahren zur entfernung von phosphor von einer faser oder einem garn
JP4769291B2 (ja) 2005-03-28 2011-09-07 イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー 紡績ヤーン中のポリ燐酸に加水分解を受けさせる方法
JP4769295B2 (ja) * 2005-03-28 2011-09-07 イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー 紡績マルチフィラメントヤーン中のポリ燐酸に加水分解を融合無しに受けさせる方法
DE602006019572D1 (de) * 2005-03-28 2011-02-24 Du Pont Heisse oberflächen-hydrolyse von polyphosphorsäure in spun-garnen
US7888457B2 (en) * 2005-04-01 2011-02-15 E. I. Du Pont De Nemours And Company Process for removing phosphorous from a fiber or yarn

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5273703A (en) * 1992-08-13 1993-12-28 The Dow Chemical Company Process for post-spin finishing of polybenzoxazole fibers
US5292469A (en) * 1993-01-05 1994-03-08 The Dow Chemical Company Process for coagulation, washing and leaching of shaped polybenzazole articles
US5393478A (en) * 1993-08-20 1995-02-28 The Dow Chemical Company Process for coagulation and washing of polybenzazole fibers

Also Published As

Publication number Publication date
EP0783603A1 (fr) 1997-07-16
MX9702304A (es) 1997-06-28
DE69513844D1 (de) 2000-01-13
WO1996010661A1 (fr) 1996-04-11
EP0783603B1 (fr) 1999-12-08
DE69513844T2 (de) 2000-07-27
CN1159836A (zh) 1997-09-17

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Legal Events

Date Code Title Description
FZDE Dead