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The polymerization of ε-caprolactum—III. Initiation by tin compounds

✍ Scribed by G.M. Burnett; A.J. MacArthur; J.N. Hay

Publisher
Elsevier Science
Year
1967
Tongue
English
Weight
321 KB
Volume
3
Category
Article
ISSN
0014-3057

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✦ Synopsis

The polymerization of ~-caprolactam initiated by weak acids and bases has been reported previously:L z) To extend these observations to Lewis acids, a variety of compounds of tin (Lr) and (IV) have been examined as possible initiates. The following compounds have been found to be effective: stannic chloride, stannous chloride, stannous octate. Other compounds including stannic fluoride, bromide and iodide are unstable under the reaction conditions. All tin compounds appear to decompose in molten caprolactam and to cause marked discoloration of the resulting polymer. In general, they are unsuitable as initiators.

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