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GB763746A - Process for the continuous polymerisation of ª[-caprolactam - Google Patents

Process for the continuous polymerisation of ª[-caprolactam

Info

Publication number
GB763746A
GB763746A GB17839/54A GB1783954A GB763746A GB 763746 A GB763746 A GB 763746A GB 17839/54 A GB17839/54 A GB 17839/54A GB 1783954 A GB1783954 A GB 1783954A GB 763746 A GB763746 A GB 763746A
Authority
GB
United Kingdom
Prior art keywords
water
vessel
pump
polyamide
caprolactam
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
GB17839/54A
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.)
Inventa AG fuer Forschung und Patentverwertung
Original Assignee
Inventa AG fuer Forschung und Patentverwertung
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 Inventa AG fuer Forschung und Patentverwertung filed Critical Inventa AG fuer Forschung und Patentverwertung
Publication of GB763746A publication Critical patent/GB763746A/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
    • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
    • C08G69/08—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino-carboxylic acids
    • C08G69/14—Lactams
    • C08G69/16—Preparatory processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/141—Feedstock

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

Shaped masses of polyamide are continuously formed by polymerizing e -caprolactam at 250-275 DEG C. and elevated pressure in presence of not more than 1 per cent water in a closed, filled vessel 4, to which is directly connected, e.g. by pipe 6, a pump 8 which presses the molten polyamide, with the entire water content, through a shaping nozzle or nozzles 9. The water is mixed with the lactam in mixing vessel 1 and delivered therefrom to vessel 4, by pump 3. Heating jackets 2, 5 and 6 enclose the whole apparatus. Pressure in the reaction vessel 4 is regulated by a pipe and valve (not shown) which returns excess caprolactam delivered by pump 3 to the vessel 1. The temperature in vessel 1 is below 110 DEG C. to prevent evaporation of the added water. Tube 4 is of such a length that the lactam-water mixture is retained there for about 8 hours. The pressure at the beginning of the tube is 15-35 atms. and at the end is about 5 atms. The extrusion device 9 may be a spinning nozzle for fine threads or monofils or may be a slot nozzle for bands or ribbons. Yarns may be stretched directly on a winding-machine after treatment with an emulsifying oil. Examples describe the production of stretched yarns. The water may be added as a substance which splits off water forming a polyamide, e.g. an amino acid or a diamine-dicarboxylic acid salt.
GB17839/54A 1953-07-15 1954-06-17 Process for the continuous polymerisation of ª[-caprolactam Expired GB763746A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH763746X 1953-07-15
CH1103251X 1953-07-15

Publications (1)

Publication Number Publication Date
GB763746A true GB763746A (en) 1956-12-19

Family

ID=29421169

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17839/54A Expired GB763746A (en) 1953-07-15 1954-06-17 Process for the continuous polymerisation of ª[-caprolactam

Country Status (2)

Country Link
FR (1) FR1103251A (en)
GB (1) GB763746A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1093087B (en) * 1957-04-06 1960-11-17 Glanzstoff Ag Process and device for the continuous production of polyamides from dicarboxylic acids and diamines
US3156750A (en) * 1959-06-18 1964-11-10 Du Pont Process of producing polycaprolactam monofilaments
FR2414396A1 (en) * 1978-01-16 1979-08-10 Usi Far East Corp INTEGRATED SYSTEM FOR THE FORMATION OF SYNTHETIC RESIN SHEETS

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1093087B (en) * 1957-04-06 1960-11-17 Glanzstoff Ag Process and device for the continuous production of polyamides from dicarboxylic acids and diamines
US3156750A (en) * 1959-06-18 1964-11-10 Du Pont Process of producing polycaprolactam monofilaments
FR2414396A1 (en) * 1978-01-16 1979-08-10 Usi Far East Corp INTEGRATED SYSTEM FOR THE FORMATION OF SYNTHETIC RESIN SHEETS

Also Published As

Publication number Publication date
FR1103251A (en) 1955-11-02

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