GB775888A - Improvements in and relating to the manufacture of polymerised -e-caprolactam - Google Patents

Improvements in and relating to the manufacture of polymerised -e-caprolactam

Info

Publication number
GB775888A
GB775888A GB23445/54A GB2344554A GB775888A GB 775888 A GB775888 A GB 775888A GB 23445/54 A GB23445/54 A GB 23445/54A GB 2344554 A GB2344554 A GB 2344554A GB 775888 A GB775888 A GB 775888A
Authority
GB
United Kingdom
Prior art keywords
caprolactam
melt
heated
polymer
spun
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
GB23445/54A
Inventor
Wolfgang Grichl
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.)
THUERINGISCHES KUNSTFASERWERK
Original Assignee
THUERINGISCHES KUNSTFASERWERK
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 to DEV6862A priority Critical patent/DE1030993B/en
Priority to CH329736D priority patent/CH329736A/en
Application filed by THUERINGISCHES KUNSTFASERWERK filed Critical THUERINGISCHES KUNSTFASERWERK
Priority to GB23445/54A priority patent/GB775888A/en
Publication of GB775888A publication Critical patent/GB775888A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/46—Post-polymerisation treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyamides (AREA)

Abstract

Low molecular weight constituents are removed from poly-caprolactam by blowing a finely divided inert gas, e.g. nitrogen or hydrogen, through the molten polymer. The melt may be stirred during the process. The gas stream may be pre-heated. The gas is cooled after use to remove the low molecular weight constituents by condensation, and may then be re-used. In examples: (1) caprolactam is polymerized in presence of acetic acid and #xamino-caproic acid, and the polymer heated to 280 DEG C. Nitrogen, free from oxygen and heated to 280 DEG C., is blown in a finely-divided state through the vigorously stirred melt. The melt is de-gassed by keeping it at reduced pressure and may then be spun. (2) Hydrogen is blown through a polymeric caprolactam melt in the last zone of an apparatus for continuous polymerization with the aid of acetic acid as catalyst. The degassed polymer is then spun. Specification 747,913 is referred to.
GB23445/54A 1954-02-15 1954-08-12 Improvements in and relating to the manufacture of polymerised -e-caprolactam Expired GB775888A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DEV6862A DE1030993B (en) 1954-02-15 1954-02-15 Process for removing low molecular weight fractions from polymerized ªŠ-caprolactam
CH329736D CH329736A (en) 1954-02-15 1954-05-22 Process for removing low molecular weight fractions from polymerized e-amino-caprolactam
GB23445/54A GB775888A (en) 1954-02-15 1954-08-12 Improvements in and relating to the manufacture of polymerised -e-caprolactam

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEV6862A DE1030993B (en) 1954-02-15 1954-02-15 Process for removing low molecular weight fractions from polymerized ªŠ-caprolactam
GB23445/54A GB775888A (en) 1954-02-15 1954-08-12 Improvements in and relating to the manufacture of polymerised -e-caprolactam

Publications (1)

Publication Number Publication Date
GB775888A true GB775888A (en) 1957-05-29

Family

ID=29421430

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23445/54A Expired GB775888A (en) 1954-02-15 1954-08-12 Improvements in and relating to the manufacture of polymerised -e-caprolactam

Country Status (3)

Country Link
CH (1) CH329736A (en)
DE (1) DE1030993B (en)
GB (1) GB775888A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2952675A (en) * 1958-07-01 1960-09-13 Inventa A G Fur Forschun Und P Process of recovering epsilon-caprolactam from its polymer
US3109835A (en) * 1958-10-08 1963-11-05 Allied Chem Process for producing ultrahigh viscosity polycaprolactam

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1265413B (en) * 1963-06-06 1968-04-04 Glanzstoff Ag Process to increase the solution viscosity of polyamides

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE748253C (en) * 1938-06-10 1944-10-30 Process for the production of deformable high molecular weight polyamides
FR957390A (en) * 1946-08-22 1950-02-18
BE497507A (en) * 1949-11-07

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2952675A (en) * 1958-07-01 1960-09-13 Inventa A G Fur Forschun Und P Process of recovering epsilon-caprolactam from its polymer
US3109835A (en) * 1958-10-08 1963-11-05 Allied Chem Process for producing ultrahigh viscosity polycaprolactam

Also Published As

Publication number Publication date
CH329736A (en) 1958-05-15
DE1030993B (en) 1958-05-29

Similar Documents

Publication Publication Date Title
US3017391A (en) Preparation of polycaprolactam using n-acyl activators
Hanford et al. Polymeric amides from epsilon‐caprolactam
KR910006371A (en) Method of Crystallization of Polyethylene Naphthalate
DE3065418D1 (en) Polycarbonate-polyether-copolymer membrane, process for its production and use thereof
US3042659A (en) Activators for the polymerization of 2-pyrrolidone
JPS58145419A (en) Manufacture of aromatic polyimide film
GB775888A (en) Improvements in and relating to the manufacture of polymerised -e-caprolactam
GB747913A (en) Process for the elimination of the unconverted polymer-forming monomers from synthetic linear high polymers
US3211706A (en) Process for the manufacture of linear polyamides of beta-aminocarboxylic acids
JPS6337136B2 (en)
US2431042A (en) Process for obtaining clear films from ethylene polymers
NO134607B (en)
US3057830A (en) Polymerization of cyclic amides
US3069392A (en) Activators for the polymerization of pyrrolidone
US4642211A (en) Preparation of dry polycaprolactam granules
US3451975A (en) Process for polymerizing lactams
US2524046A (en) Multichain polyamide polymers
JPH0447048B2 (en)
US3741939A (en) Polymerizing caprolactam
GB762443A (en) Process for polymerising cyclic lactams of ªÏ-amino-carboxylic acids
US2708663A (en) Copolymers of nu-methyl maleimide
ATE66256T1 (en) ARTICLES OF AETHYLENE VINYL ALCOHOL COPOLYMERS OF HIGH STRENGTH AND MODULE AND METHOD OF MAKING THE SAME.
US3394107A (en) Process for production of polyoxymethylene
GB1508646A (en) Shaped articles from synthetic polymers
SU852890A1 (en) Method of preparing polycaproamide