GB756384A - Improved process for the stabilization of polyamides - Google Patents

Improved process for the stabilization of polyamides

Info

Publication number
GB756384A
GB756384A GB175/54A GB17554A GB756384A GB 756384 A GB756384 A GB 756384A GB 175/54 A GB175/54 A GB 175/54A GB 17554 A GB17554 A GB 17554A GB 756384 A GB756384 A GB 756384A
Authority
GB
United Kingdom
Prior art keywords
butyrolactone
polyamides
precondensate
jan
stabilization
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
GB175/54A
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 GB756384A publication Critical patent/GB756384A/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

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

756,384. Polyamides. PERFOGIT SOC. PER AZIONI. Jan. 4, 1954 [Jan. 12, 1953], No. 175/54. Class 2 (5). In the preparation of polyamides by the polycondensation or polymerization of diamines and dicarboxylic acids or esters thereof, or of aminoacids, or of cyclic amides, the molecular weight of the product is controlled by carrying out the process in the presence of butyrolactone. Polyamides specified are polymers of omegaaminoundecanoic acid, caprolactam or hexamethylene diamine adipate. It is preferred to operate under such conditions that butyrolactone is not lost by distillation and this may be done either by adding the butyrolactone after the greater amount of water, if any, formed during polymerization has been driven off, or, and preferably, by forming a precondensate of the butyrolactone with a part of the polyamideforming starting material and employing this precondensate in place of butyrolactone. Specification 495,790, [Group IV], is referred to.
GB175/54A 1953-01-12 1954-01-04 Improved process for the stabilization of polyamides Expired GB756384A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT756384X 1953-01-12

Publications (1)

Publication Number Publication Date
GB756384A true GB756384A (en) 1956-09-05

Family

ID=31898485

Family Applications (1)

Application Number Title Priority Date Filing Date
GB175/54A Expired GB756384A (en) 1953-01-12 1954-01-04 Improved process for the stabilization of polyamides

Country Status (4)

Country Link
BE (1) BE525613A (en)
FR (1) FR1094098A (en)
GB (1) GB756384A (en)
NL (1) NL89067C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3328341A (en) * 1963-09-09 1967-06-27 American Enka Corp Polyamides containing butyrolactone
US3373055A (en) * 1963-05-22 1968-03-12 Secr Aviation Process for treating polyamide materials

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103709399B (en) * 2013-11-29 2016-04-27 中蓝晨光化工研究设计院有限公司 A kind of 11-aminoundecanoic acid normal pressure melt polymerization prepares the technique of nylon 11

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3373055A (en) * 1963-05-22 1968-03-12 Secr Aviation Process for treating polyamide materials
US3328341A (en) * 1963-09-09 1967-06-27 American Enka Corp Polyamides containing butyrolactone

Also Published As

Publication number Publication date
NL89067C (en) 1958-09-15
BE525613A (en) 1956-06-08
FR1094098A (en) 1955-05-11

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