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GB584985A - Improvements in or relating to synthetic linear polyamide filaments - Google Patents

Improvements in or relating to synthetic linear polyamide filaments

Info

Publication number
GB584985A
GB584985A GB20483/44A GB2048344A GB584985A GB 584985 A GB584985 A GB 584985A GB 20483/44 A GB20483/44 A GB 20483/44A GB 2048344 A GB2048344 A GB 2048344A GB 584985 A GB584985 A GB 584985A
Authority
GB
United Kingdom
Prior art keywords
phenol
formaldehyde
parts
resin
sodium
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
GB20483/44A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB584985A publication Critical patent/GB584985A/en
Expired 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
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Paints Or Removers (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)

Abstract

Synthetic linear polyamide filaments which contain a compatible phenol-formaldehyde resin are subjected to the action of a hot aqueous alkali solution while held at fixed length. The extraction of the resin by paint and lacquer solvents is thereby reduced and the bend-recovery of the filaments improved. The preferred phenolic resins are those of low molecular weight which do not become infusible on heating for short periods at 275 DEG to 285 DEG C. and which are obtained by the acid condensation of formaldehyde and unsubstituted phenol in molecular ratio of from 0.5 to 1.0. Ortho- and para-substituted phenols may be used, and in general the ratio of formaldehyde to phenol must be decreased with increase in molecular weight of phenols in order to maintain compatability with the polyamides. For example, there may be used a resin prepared from formaldehyde and p-tertiary-butyl phenol in molecular ratio of 0.75, or a resin prepared from formaldehyde and p-octyl phenol in molecular ratio of 0.5. Other suitable substituted phenols are cresol, amyl phenol and phenyl phenol. Suitable aqueous alkali solutions are solutions of hydroxides of sodium, barium, potassium and lithium, and salts of weak acids such as sodium carbonate and sodium acetate. In an example, a drawn filament containing 20 parts of phenol-formaldehyde resin (prepared by condensing 900 parts of phenol with 580 parts of 37 per cent formaldehyde solution in the presence of 9 parts of ammonium chloride and 10 parts of oxalic acid) and 80 parts of polyhexamethylene adipamide is wrapped around a reel and exposed to boiling water for an hour. It is then immersed in a boiling solution of 5 per cent sodium hydroxide for one hour. Specifications 461,236, 461,237 and 27108/39 (as open to inspection under Sect. 91) are referred to.
GB20483/44A 1943-10-25 1944-10-23 Improvements in or relating to synthetic linear polyamide filaments Expired GB584985A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US584985XA 1943-10-25 1943-10-25

Publications (1)

Publication Number Publication Date
GB584985A true GB584985A (en) 1947-01-28

Family

ID=22017188

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20483/44A Expired GB584985A (en) 1943-10-25 1944-10-23 Improvements in or relating to synthetic linear polyamide filaments

Country Status (1)

Country Link
GB (1) GB584985A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1001453B (en) * 1952-02-04 1957-01-24 Glanzstoff Ag Process for the production of matt structures, such as threads, fibers, bristles or ribbons, with high structural elasticity from polyamides or their copolymers
WO2002020668A2 (en) * 2000-09-05 2002-03-14 Donaldson Company, Inc. Polymer compositions, polymer microfibers, polymer nanofibers and applications including filter structure
US7270693B2 (en) 2000-09-05 2007-09-18 Donaldson Company, Inc. Polymer, polymer microfiber, polymer nanofiber and applications including filter structures
US7316723B2 (en) 2001-05-31 2008-01-08 Donaldson Company, Inc. Air filter with fine fiber and spun bonded media
US9587328B2 (en) 2011-09-21 2017-03-07 Donaldson Company, Inc. Fine fibers made from polymer crosslinked with resinous aldehyde composition
US10300415B2 (en) 2013-03-09 2019-05-28 Donaldson Company, Inc. Fine fibers made from reactive additives

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1001453B (en) * 1952-02-04 1957-01-24 Glanzstoff Ag Process for the production of matt structures, such as threads, fibers, bristles or ribbons, with high structural elasticity from polyamides or their copolymers
US7318852B2 (en) 2000-09-05 2008-01-15 Donaldson Company, Inc. Bag house filter with fine fiber and spun bonded media
US8029588B2 (en) 2000-09-05 2011-10-04 Donaldson Company, Inc. Fine fiber media layer
US6743273B2 (en) 2000-09-05 2004-06-01 Donaldson Company, Inc. Polymer, polymer microfiber, polymer nanofiber and applications including filter structures
US6955775B2 (en) 2000-09-05 2005-10-18 Donaldson Company, Inc. Process if making fine fiber material
US7070640B2 (en) 2000-09-05 2006-07-04 Donaldson Company, Inc. Polymer, polymer microfiber, polymer nanofiber and applications including filter structures
US7090715B2 (en) 2000-09-05 2006-08-15 Donaldson Company, Inc. Polymer, polymer microfiber, polymer nanofiber and applications including filter structures
US7179317B2 (en) 2000-09-05 2007-02-20 Donaldson Company, Inc. Polymer, polymer microfiber, polymer nanofiber and applications including filter structures
US7270693B2 (en) 2000-09-05 2007-09-18 Donaldson Company, Inc. Polymer, polymer microfiber, polymer nanofiber and applications including filter structures
US10967315B2 (en) 2000-09-05 2021-04-06 Donaldson Company, Inc. Fine fiber media layer
WO2002020668A2 (en) * 2000-09-05 2002-03-14 Donaldson Company, Inc. Polymer compositions, polymer microfibers, polymer nanofibers and applications including filter structure
WO2002020668A3 (en) * 2000-09-05 2003-07-24 Donaldson Co Inc Polymer compositions, polymer microfibers, polymer nanofibers and applications including filter structure
US8118901B2 (en) 2000-09-05 2012-02-21 Donaldson Company, Inc. Fine fiber media layer
US7318853B2 (en) 2000-09-05 2008-01-15 Donaldson Company, Inc. Polymer, polymer microfiber, polymer nanofiber and applications including filter structures
US8366797B2 (en) 2000-09-05 2013-02-05 Donaldson Company, Inc. Fine fiber media layer
US8512431B2 (en) 2000-09-05 2013-08-20 Donaldson Company, Inc. Fine fiber media layer
US8709118B2 (en) 2000-09-05 2014-04-29 Donaldson Company, Inc. Fine fiber media layer
US10272374B2 (en) 2000-09-05 2019-04-30 Donaldson Company, Inc. Fine fiber media layer
US9718012B2 (en) 2000-09-05 2017-08-01 Donaldson Company, Inc. Fine fiber media layer
US7316723B2 (en) 2001-05-31 2008-01-08 Donaldson Company, Inc. Air filter with fine fiber and spun bonded media
US9587328B2 (en) 2011-09-21 2017-03-07 Donaldson Company, Inc. Fine fibers made from polymer crosslinked with resinous aldehyde composition
US10300415B2 (en) 2013-03-09 2019-05-28 Donaldson Company, Inc. Fine fibers made from reactive additives

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