GB1019145A - Method of and apparatus for manufacturing formed bodies from synthetic,linear,high molecular weight polyamides of low monomer content - Google Patents

Method of and apparatus for manufacturing formed bodies from synthetic,linear,high molecular weight polyamides of low monomer content

Info

Publication number
GB1019145A
GB1019145A GB3780562A GB3780562A GB1019145A GB 1019145 A GB1019145 A GB 1019145A GB 3780562 A GB3780562 A GB 3780562A GB 3780562 A GB3780562 A GB 3780562A GB 1019145 A GB1019145 A GB 1019145A
Authority
GB
United Kingdom
Prior art keywords
monomer content
synthetic
linear
molecular weight
high molecular
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
GB3780562A
Inventor
Hermann Ludewig
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.)
SCHWARZA CHEMIEFASER
Original Assignee
SCHWARZA CHEMIEFASER
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 SCHWARZA CHEMIEFASER filed Critical SCHWARZA CHEMIEFASER
Priority to GB3780562A priority Critical patent/GB1019145A/en
Publication of GB1019145A publication Critical patent/GB1019145A/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
    • 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

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Polyamides (AREA)

Abstract

Polycaprolactam is purified to a monomer content of not more than 3% by extraction under pressure with a non-solvent for the polymer at a temperature above the normal boiling point of the non-solvent and the melting point of the polymer, the non-solvent being removed by de-gassing. Specified non-solvents are water or mixtures of water and alcohol or ketones, or ketones. The purification may be a step in a continuous polymerization process and is stated to be operable for polyamides generally. In the example polycaprolactam is purified to an extractables content of 0.5%.
GB3780562A 1962-10-05 1962-10-05 Method of and apparatus for manufacturing formed bodies from synthetic,linear,high molecular weight polyamides of low monomer content Expired GB1019145A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3780562A GB1019145A (en) 1962-10-05 1962-10-05 Method of and apparatus for manufacturing formed bodies from synthetic,linear,high molecular weight polyamides of low monomer content

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3780562A GB1019145A (en) 1962-10-05 1962-10-05 Method of and apparatus for manufacturing formed bodies from synthetic,linear,high molecular weight polyamides of low monomer content

Publications (1)

Publication Number Publication Date
GB1019145A true GB1019145A (en) 1966-02-02

Family

ID=10399126

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3780562A Expired GB1019145A (en) 1962-10-05 1962-10-05 Method of and apparatus for manufacturing formed bodies from synthetic,linear,high molecular weight polyamides of low monomer content

Country Status (1)

Country Link
GB (1) GB1019145A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2242434A (en) * 1990-03-22 1991-10-02 Toyo Engineering Corp Purifying a polymer melt using high pressure
GB2223022B (en) * 1988-09-22 1992-09-16 Toyo Engineering Corp Method for purifying polymer
US5237048A (en) * 1988-09-22 1993-08-17 Toyo Engineering Corporation Method for purifying polymer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2223022B (en) * 1988-09-22 1992-09-16 Toyo Engineering Corp Method for purifying polymer
US5237048A (en) * 1988-09-22 1993-08-17 Toyo Engineering Corporation Method for purifying polymer
GB2242434A (en) * 1990-03-22 1991-10-02 Toyo Engineering Corp Purifying a polymer melt using high pressure
GB2242434B (en) * 1990-03-22 1994-06-01 Toyo Engineering Corp A method for purifying a polymer

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