ANIONIC POLYMERIZATION OF CAPROLACTAM - 45. DECAY AND REGENERATION OF CATALYTIC ACTIVITY IN ANIONIC POLYCAPROLACTAM VIA 3-OXOAMIDES | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

8423767

Reference Type

Journal Article

Title

ANIONIC POLYMERIZATION OF CAPROLACTAM - 45. DECAY AND REGENERATION OF CATALYTIC ACTIVITY IN ANIONIC POLYCAPROLACTAM VIA 3-OXOAMIDES

Author(s)

Bukac, Z; Sebenda, J

Year

1973

Is Peer Reviewed?

Yes

Journal

Journal of Polymer Science. Symposia Proceedings (Print Edition)
ISSN: 0360-8905

Publisher

WILEY

Location

HOBOKEN

Issue

Page Numbers

345-352

Web of Science Id

WOS:A1973R051000035

Abstract

N, 2-Diethyl-3-oxohexaneamide was chosen as a model compound for the investigation of transformations of the 3-oxoamide structures in anionic polycaprolactam. Dipropyl ketone, ethyl butyramide, N,N prime ,2-triethyl malonamide, 1,3,5-triethyl-6-propylpyrimidine-2,4-dione are formed under the conditions of anionic polymerization, along with carbon dioxide and traces of ethyl isocyanate, ethyl amine, and N,N prime -diethylurea. The formation of these compounds can be explained by the cleavage or rearrangement of the 3-oxoamide N-anion and by secondary reactions of isocyanate with the initial 3-oxoamide. Some of the reactions of the 3-oxoamide give rise to growth centers as well as a strong base, thus causing regeneration of the catalytic activity.