GB520263A - Improvements in the manufacture of polyamides - Google Patents

Improvements in the manufacture of polyamides

Info

Publication number
GB520263A
GB520263A GB3120038A GB3120038A GB520263A GB 520263 A GB520263 A GB 520263A GB 3120038 A GB3120038 A GB 3120038A GB 3120038 A GB3120038 A GB 3120038A GB 520263 A GB520263 A GB 520263A
Authority
GB
United Kingdom
Prior art keywords
polyamides
heated
solid state
hexamethylene diammonium
polyamide
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
GB3120038A
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
Priority claimed from US173719A external-priority patent/US2172374A/en
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB520263A publication Critical patent/GB520263A/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
    • C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
    • C08G69/28—Preparatory processes
    • C08G69/30—Solid state polycondensation

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

520,263. Polyamides. DU PONT DE NEMOURS & CO., E. I. Oct. 28, 1938, No. 31200. Convention date, Nov. 9, 1937. [Class 2 (iii)] Refers to diamine-dibasic acid polyamides, as described in Specification 461,237, and consists in converting the half-made polyamide to a superpolyamide by heating the former in the solid state and preferably in finely-divided condition to a polymerizing temperature which is below (preferably 2-20‹C.) the melting-point, as determined by the fusion method in the absence of oxygen. In an example hexamethylene diammonium adipate, with a little adipic acid and hexamethylene diammonium acetate and water is heated to 225‹C. in an autoclave and the half-made polymer so prepared is then heated in the solid state to 259‹C. The invention may be applied to mixtures of polyamides, interpolymers, or polyamide compositions containing modifying agents, e.g., plasticizers, resins, pigments, dyestuffs, &c. Specifications 474,999, 495,790 and 506,125 also are referred to.
GB3120038A 1937-11-09 1938-10-28 Improvements in the manufacture of polyamides Expired GB520263A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US173719A US2172374A (en) 1937-11-09 1937-11-09 Polymerization process

Publications (1)

Publication Number Publication Date
GB520263A true GB520263A (en) 1940-04-18

Family

ID=22633204

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3120038A Expired GB520263A (en) 1937-11-09 1938-10-28 Improvements in the manufacture of polyamides

Country Status (2)

Country Link
FR (1) FR845691A (en)
GB (1) GB520263A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL264738A (en) * 1959-10-29
NL126608C (en) * 1961-05-08
NL264981A (en) * 1961-05-08

Also Published As

Publication number Publication date
FR845691A (en) 1939-08-30

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