IL39188A - Poly(p-phenylene terephthalamide)fibers and their preparation - Google Patents

Poly(p-phenylene terephthalamide)fibers and their preparation

Info

Publication number
IL39188A
IL39188A IL39188A IL3918872A IL39188A IL 39188 A IL39188 A IL 39188A IL 39188 A IL39188 A IL 39188A IL 3918872 A IL3918872 A IL 3918872A IL 39188 A IL39188 A IL 39188A
Authority
IL
Israel
Prior art keywords
fiber
poly
phenylene terephthalamide
less
orientation angle
Prior art date
Application number
IL39188A
Other versions
IL39188A0 (en
Original Assignee
Du Pont
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26835968&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=IL39188(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Du Pont filed Critical Du Pont
Publication of IL39188A0 publication Critical patent/IL39188A0/en
Publication of IL39188A publication Critical patent/IL39188A/en

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
    • D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
    • D01F6/605—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides from aromatic polyamides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)
  • Tires In General (AREA)

Claims (6)

WHAT IS- CLAIMED IS: 39188/2
1. A novel high tenacity, high modulus fiber, having a density of at least 1.4-0 g./cm.^ and consisting essentially of poly(p-phenylene terephthalamide) , the polymer of said fiber having an inherent viscosity of at least 4.0 and said fiber having 1) a lateral birefringence of at least 0.022, 2) crystalline o regions with an apparent crystallite size of greater than' 58 A, and 3) an orientation angle no greater than 13° with the proviso that the ratio of the apparent crystallite size ; o the orienta- o tion angle is at least 6 A . degree
2. The fiber of Claim 1 having a filament tenacity of at least 22 grams per denier and a yarn modulus of at least 900 g.p.d.
3. The fiber of Claim 2 wherein the crystalline regions have an orientation angle of less than 10° . · ·-·
4. Process for preparing the poly(p-phenylene terephthalamide) fiber of Claim 1 by heating a poly(p-phenylene terephthalamide) fiber having an inherent viscosity' of at least 4.0 , an orientation angle of less than 22 ° and an apparent crystallite 0 size of less than 52 A under tension in a zone maintained of at least 150eC. for a length of time sufficient to provide an appar- 0 ent crystallite size of more than 58 A and an orientation angle of greater rio than 13° wherein the starting fiber has a lateral birefringence of at least 0.02 , the tension is at least 0.5 g./denier but less than the tension required to draw the fiber more than I.03 times its original length at that temperature and the time of heating is such that the original tensile strength and inherent viscosity of the starting fiber does not decrease by more than 30$.
5. · Process of Claim 4 wherein the starting fibers have a density of at least 1.40.
6. Process of Claim 4 wherein the starting fibers have a density of at least 1.44 and a tensile strength of at least 22 g./denier .
IL39188A 1971-04-28 1972-04-11 Poly(p-phenylene terephthalamide)fibers and their preparation IL39188A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13820971A 1971-04-28 1971-04-28
US17251471A 1971-08-17 1971-08-17

Publications (2)

Publication Number Publication Date
IL39188A0 IL39188A0 (en) 1972-06-28
IL39188A true IL39188A (en) 1976-02-29

Family

ID=26835968

Family Applications (1)

Application Number Title Priority Date Filing Date
IL39188A IL39188A (en) 1971-04-28 1972-04-11 Poly(p-phenylene terephthalamide)fibers and their preparation

Country Status (15)

Country Link
JP (1) JPS5514167B1 (en)
AR (1) AR198167A1 (en)
AU (1) AU463869B2 (en)
BE (1) BE782796A (en)
CA (1) CA1013525A (en)
CH (1) CH531056A (en)
DE (2) DE2266038C3 (en)
ES (1) ES402142A1 (en)
FR (1) FR2134581B1 (en)
GB (1) GB1391501A (en)
IL (1) IL39188A (en)
IT (1) IT968393B (en)
LU (1) LU65247A1 (en)
NL (1) NL172570B (en)
SE (1) SE382081B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL39187A (en) * 1971-04-28 1976-02-29 Du Pont Polyamide fibers and films and their preparation
JPS55122012A (en) * 1979-03-13 1980-09-19 Asahi Chem Ind Co Ltd Poly-p-phenylene terephthalamide fiber having improved fatigue resistance and its production
JPS55122011A (en) * 1979-03-13 1980-09-19 Asahi Chem Ind Co Ltd Poly-p-phenylene terephthalamide fiber having high young's modulus and its preparation
KR860001141B1 (en) * 1984-06-29 1986-08-16 한국과학기술원 Method for producing polymeric hybrid fibers composed of wholly aromatic polyamides and aromatic-aliphatic ordered copolyamides
JP3676111B2 (en) 1998-06-03 2005-07-27 帝人テクノプロダクツ株式会社 Aromatic polyamide fiber and paper using the same
JP3475234B2 (en) * 1998-10-15 2003-12-08 帝人テクノプロダクツ株式会社 Aromatic polyamide fiber paper
DE69908530T2 (en) 1998-10-15 2004-05-06 Teijin Ltd. Synthetic paper made from fully aromatic polyamide fibers
US20130157054A1 (en) * 2011-12-20 2013-06-20 E.I. Du Pont De Nemours And Company High linear density, high modulus, high tenacity yarns and methods for making the yarns

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US138210A (en) * 1873-04-22 Improvement in hay and cotton presses
US2318704A (en) * 1940-04-02 1943-05-11 Celanese Corp Production of artificial filaments, foils, and like shaped articles
GB796544A (en) * 1954-10-13 1958-06-11 British Celanese Improvements in the manufacture of artificial filaments and like products
US3063966A (en) * 1958-02-05 1962-11-13 Du Pont Process of making wholly aromatic polyamides
NL108880C (en) * 1957-02-28
GB877855A (en) * 1958-07-22 1961-09-20 Wilcolator Co Improvements in gas oven control
US3094511A (en) * 1958-11-17 1963-06-18 Du Pont Wholly aromatic polyamides
FR1242289A (en) * 1958-12-19 1960-09-23 Du Pont Synthetic fiber crystallization process
GB877885A (en) * 1958-12-19 1961-09-20 Du Pont Improvements relating to the treatment of aromatic polyamide structures
BE625232A (en) * 1960-05-31
US3079219A (en) * 1960-12-06 1963-02-26 Du Pont Process for wet spinning aromatic polyamides
US3154610A (en) * 1961-05-31 1964-10-27 Celanese Corp Process of wet spinning polyamides and prevention of gel formation
BE637258A (en) * 1962-09-11
US3354125A (en) * 1963-07-29 1967-11-21 Monsanto Co Polymers from diaminobenzanilides
US3414645A (en) * 1964-06-19 1968-12-03 Monsanto Co Process for spinning wholly aromatic polyamide fibers
DE1910426U (en) 1964-10-20 1965-02-18 Wills K G Laurinwerk WRITING DEVICE.
CH467362A (en) * 1965-02-05 1969-02-28 Nippon Rayon Kk Process for improving the properties of polyamide yarns
CA928440A (en) * 1967-12-27 1973-06-12 I. Bair Thomas Fibres of aromatic para-oriented polyterephthalamides
IT947029B (en) * 1968-03-15 1973-05-21 Kyowa Hakko Kogyo Kk PROCEDURE FOR PREPARING THE L ISOLEUCINE BY STOPPING
DE1810426B2 (en) * 1968-06-12 1980-08-28 E.I. Du Pont De Nemours And Co., Wilmington, Del. (V.St.A.) Optically anisotropic mass containing aromatic polyamides
US3600269A (en) * 1968-07-29 1971-08-17 Monsanto Co Novel fiber reinforced matrix composites
IL39187A (en) * 1971-04-28 1976-02-29 Du Pont Polyamide fibers and films and their preparation
US3869430A (en) * 1971-08-17 1975-03-04 Du Pont High modulus, high tenacity poly(p-phenylene terephthalamide) fiber
US3796693A (en) * 1971-08-23 1974-03-12 H Morgan High modulus aromatic poly(amide hydrazide) fibers
US3723380A (en) * 1972-02-04 1973-03-27 Monsanto Co Aromatic amide-hydrazide copolymer
US3767756A (en) * 1972-06-30 1973-10-23 Du Pont Dry jet wet spinning process
NL7904496A (en) * 1979-06-08 1980-12-10 Akzo Nv FIBER, WIRE BUNDLE AND ROPE OF POLY-P-PHENYLENE GRADE-LANGUAGE AMIDE.

Also Published As

Publication number Publication date
IL39188A0 (en) 1972-06-28
CH531056A (en) 1972-11-30
CA1013525A (en) 1977-07-12
AU4153672A (en) 1973-11-01
AR198167A1 (en) 1974-06-07
SE382081B (en) 1976-01-12
DE2219646C3 (en) 1988-11-10
BE782796A (en) 1972-08-16
DE2266038C3 (en) 1989-07-20
JPS5514167B1 (en) 1980-04-14
DE2219646B2 (en) 1980-01-03
GB1391501A (en) 1975-04-23
FR2134581A1 (en) 1972-12-08
FR2134581B1 (en) 1978-06-02
ES402142A1 (en) 1975-11-16
DE2219646A1 (en) 1972-11-09
NL172570B (en) 1983-04-18
IT968393B (en) 1974-03-20
AU463869B2 (en) 1975-08-07
LU65247A1 (en) 1972-07-14
NL7205837A (en) 1972-10-31

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