GB757539A - Improved process for the polymerization of caprolactam - Google Patents

Improved process for the polymerization of caprolactam

Info

Publication number
GB757539A
GB757539A GB3795/54A GB379554A GB757539A GB 757539 A GB757539 A GB 757539A GB 3795/54 A GB3795/54 A GB 3795/54A GB 379554 A GB379554 A GB 379554A GB 757539 A GB757539 A GB 757539A
Authority
GB
United Kingdom
Prior art keywords
caprolactam
grams
hours
butyrolactone
hydrogen atmosphere
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
GB3795/54A
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.)
Perfogit SpA
Original Assignee
Perfogit SpA
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 Perfogit SpA filed Critical Perfogit SpA
Publication of GB757539A publication Critical patent/GB757539A/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

Landscapes

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

Abstract

Caprolactam is polymerized (in the absence of water) by using g -butyrolactone as reaction initiator. In examples: (1) 1.06 grams butyrolactone are added to 100 grams caprolactam (both water-free), and the mixture heated at 240-250 DEG C. for 28 hours in a hydrogen atmosphere; (2) 3.05 grams butyrolactone are added to 100 grams caprolactam and the mixture heated for 12 hours in a hydrogen atmosphere; 10 grams of the resulting precondensate are mixed with 90 grams caprolactam and heated at 240-250 DEG C. for 12 hours and then at 230-235 DEG C. for 20 hours in a hydrogen atmosphere to give a polymer having an intrinsic viscosity of 1.02.
GB3795/54A 1953-03-20 1954-02-09 Improved process for the polymerization of caprolactam Expired GB757539A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT757539X 1953-03-20

Publications (1)

Publication Number Publication Date
GB757539A true GB757539A (en) 1956-09-19

Family

ID=11315823

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3795/54A Expired GB757539A (en) 1953-03-20 1954-02-09 Improved process for the polymerization of caprolactam

Country Status (1)

Country Link
GB (1) GB757539A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1130592B (en) * 1956-11-16 1962-05-30 Glanzstoff Ag Process for the production of end group modified polyamides

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1130592B (en) * 1956-11-16 1962-05-30 Glanzstoff Ag Process for the production of end group modified polyamides

Similar Documents

Publication Publication Date Title
GB900151A (en) A process for the alkaline polymerisation of lactams
ES440200A1 (en) Process for the polymerization of acrylonitrile
GB965425A (en) Process for manufacturing polymers and copolymers by an ionic polymerization
ES438750A1 (en) Process for preparing impact resistant styrene polymers
ES430959A1 (en) Polymerization of acrylamide in the presence of water-soluble nitrogen compounds
GB757539A (en) Improved process for the polymerization of caprolactam
GB1074276A (en) Process for the coupling of terminally reactive polymers
GB934742A (en) Improvements in or relating to hydrocarbon copolymers
KR880013983A (en) Slowed Two-Component Substitution Catalyst System
GB734913A (en) Thermoplastic terpolymers
GB919757A (en) Process for polymerizing n-vinyl lactams
GB840453A (en) Improvements in or relating to the polymerisation of ethylene
GB1444670A (en) Process for the production of polycarboxylates with biodegra dability
US3255168A (en) Process for polymerizing or copolymerizing ethylenically unsaturated compounds using a complex organic boron compound as a catalyst
GB1355595A (en) Process for producing copolymers of tetrafluorethylene and ethylene
ES257518A1 (en) Manufacture of prepolymers
GB1115985A (en) Process for the polymerisation of lactams
GB1497437A (en) Coupling process in the preparation of disazo diimides
GB749332A (en) Improvements in polymerization of cyclic amides
ES271454A3 (en) Acrylonitrile-cyclic sulphone copolymers
ES408706A1 (en) Process for polymerization of tetrahydrofuran
GB965253A (en) Process of producing polyethylene
GB772734A (en) A process for the manufacture of water-soluble polymers containing neutralised carboxyl groups
GB1131593A (en) Improvements in or relating to the polymerisation of isoprene
GB938780A (en) Process for polymerising aliphatic alpha-mono-olefins