GB1268267A - Process for the preparation of polyamide-imide filaments - Google Patents

Process for the preparation of polyamide-imide filaments

Info

Publication number
GB1268267A
GB1268267A GB28124/69A GB2812469A GB1268267A GB 1268267 A GB1268267 A GB 1268267A GB 28124/69 A GB28124/69 A GB 28124/69A GB 2812469 A GB2812469 A GB 2812469A GB 1268267 A GB1268267 A GB 1268267A
Authority
GB
United Kingdom
Prior art keywords
filaments
polyamide
imide
temperature
heat
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.)
Expired
Application number
GB28124/69A
Inventor
Vincent Rochina
Pierre Allard
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.)
Rhodiaceta SA
Original Assignee
Rhodiaceta SA
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
Application filed by Rhodiaceta SA filed Critical Rhodiaceta SA
Publication of GB1268267A publication Critical patent/GB1268267A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H33/00—Bathing devices for special therapeutic or hygienic purposes
    • A61H33/06—Artificial hot-air or cold-air baths; Steam or gas baths or douches, e.g. sauna or Finnish baths
    • A61H33/10—Devices on tubs for steam baths
    • 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

Abstract

1,268,267. Polyamide-imide filaments. SOC. RHODIACETA. 3 June, 1969 [4 June, 1968], No. 28124/69. Heading B5B. [Also in Division D1] Heat-stable polyamide-imide filaments are produced by extruding through a spinneret at 60‹ to 180‹ C. into an atmosphere near or above the boiling point of the solvent a solution in an organic polar solvent of a polyamide-imide having an inherent viscosity (measured at 25‹ C. on a 0À5% weight for volume solution in N- methylpyrrolidone) greater than 0.4 and preferably less than 1.6 and containing amideimide linkages of the formula and which may also contain amide linkages of the formula where R is a divalent aromatic, aliphatic, cycloaliphatic or arylaliphatic radical, Ar 1 is a divalent aromatic radical or a mixture of divalent radicals of which at least 90% are aromatic the remainder being aliphatic or cycloaliphatic and Ar 2 is a trivalent aromatic radical containing at least 6 carbon atoms; heat-treating the filaments obtained at a temperature above 160‹ C. and drawing the filaments at a temperature higher than that corresponding to the minimum value of the first derivative of the function expressing variation of maximum drawing tension as a function of the temperature in the temperature range 100‹ to 400‹ C. (the minimum drawing temperature being calculated as 200‹ to 220‹ C. for the filaments in the examples). The spinning solution may have a viscosity of 300 to 6000 poises at 25‹ C., the spinning solution may contain 15 to 35 weight per cent polyamide-imide and the preferred solvent is N-methylpyrrolidone. The spinning speed may be 100 to 400 m./minute and the filaments may be heat treated in an atmosphere of hot air, inert gas or mixtures thereof. Ar 1 is preferably the 4,4<SP>1</SP>-diphenylene ether diradical or the 4,4<SP>1</SP>-diphenylene methane diradical, Ar 2 is preferably a 1,2,4-benzene triradical and R is 1,3- or 1,4-benzene diradical. The heat-stable polyamide-imide filaments produced according to the invention have a tensile strength of at least 30 g./tex., a moisture absorption at 22‹ C. and 65% relative humidity of less than 4%, a shrinkage in boiling water of less than 0À4% and they show low loss of tensile strength on exposure to acids.
GB28124/69A 1968-06-04 1969-06-03 Process for the preparation of polyamide-imide filaments Expired GB1268267A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR69050063 1968-06-04

Publications (1)

Publication Number Publication Date
GB1268267A true GB1268267A (en) 1972-03-29

Family

ID=9695394

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28124/69A Expired GB1268267A (en) 1968-06-04 1969-06-03 Process for the preparation of polyamide-imide filaments

Country Status (16)

Country Link
US (1) US3717696A (en)
AT (1) AT296488B (en)
BE (1) BE734016A (en)
BR (1) BR6909423D0 (en)
CA (1) CA934516A (en)
CH (1) CH516007A (en)
DE (1) DE1928435C3 (en)
DK (1) DK132450C (en)
ES (1) ES368044A1 (en)
FR (1) FR1603108A (en)
GB (1) GB1268267A (en)
LU (1) LU58789A1 (en)
NL (1) NL6908409A (en)
NO (1) NO131609C (en)
SE (1) SE360400B (en)
SU (1) SU392629A3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0770714A1 (en) * 1994-05-13 1997-05-02 Toyo Boseki Kabushiki Kaisha Polyamide-imide fibers for a bug filter

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3862897A (en) * 1969-09-05 1975-01-28 Rhone Poulenc Sa Method of forming high elongation polymide-imide films
BE787500A (en) * 1971-08-12 1973-02-12 Rhone Poulenc Textile PROCESS FOR OBTAINING SHINY WIRES
US3939116A (en) * 1973-05-14 1976-02-17 Exxon Research And Engineering Company Self-supported, oriented high-performance films having minimal thermal distortion properties
US4225686A (en) * 1979-07-19 1980-09-30 The Upjohn Company Blends of copolyimides with copolyamideimides
AT377016B (en) * 1983-03-09 1985-01-25 Chemiefaser Lenzing Ag METHOD FOR THE PRODUCTION OF FIRE-RESISTANT, HIGH-TEMPERATURE-RESISTANT POLYIMIDE FIBERS
AT391710B (en) * 1988-02-26 1990-11-26 Chemiefaser Lenzing Ag FIRE-RESISTANT HIGH-TEMPERATURE-RESISTANT POLYIMIDE FIBERS AND SHAPED BODIES THEREOF
EP1911864A4 (en) * 2005-07-29 2010-03-31 Toyo Boseki Polyamide imide fiber, non-woven fabric composed of the fiber, process for manufacture of the non-woven fabric, and separator for electronic component
CN114717681A (en) * 2022-05-27 2022-07-08 南通博联材料科技有限公司 High-temperature-resistant and flame-retardant polyamideimide-based filament and green preparation and in-situ reinforcement method thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3260691A (en) * 1963-05-20 1966-07-12 Monsanto Co Coating compositions prepared from condensation products of aromatic primary diamines and aromatic tricarboxylic compounds
US3314923A (en) * 1963-11-26 1967-04-18 Bayer Ag Process for preparing imide containing polyisocyanates
US3415782A (en) * 1964-03-30 1968-12-10 Du Pont Formation of polypyromellitimide filaments

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0770714A1 (en) * 1994-05-13 1997-05-02 Toyo Boseki Kabushiki Kaisha Polyamide-imide fibers for a bug filter
US5681656A (en) * 1994-05-13 1997-10-28 Toyo Boseki Kabushiki Kaisha Polyamide-imide fibers for a bag filter

Also Published As

Publication number Publication date
BE734016A (en) 1969-12-03
DE1928435A1 (en) 1969-12-11
AT296488B (en) 1972-02-10
CA934516A (en) 1973-10-02
DE1928435B2 (en) 1979-02-01
DE1928435C3 (en) 1979-09-20
CH516007A (en) 1971-11-30
NO131609B (en) 1975-03-17
SU392629A3 (en) 1973-07-27
NL6908409A (en) 1969-12-08
DK132450C (en) 1976-06-08
LU58789A1 (en) 1970-01-14
DK132450B (en) 1975-12-08
FR1603108A (en) 1971-03-22
BR6909423D0 (en) 1973-04-05
ES368044A1 (en) 1971-05-01
NO131609C (en) 1975-06-25
US3717696A (en) 1973-02-20
SE360400B (en) 1973-09-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee