Specificity of initiating systems based on allyl derivatives of group VI-metals in the formation of graft and block copolymers
✍ Scribed by Erussalimsky, Boris L. ;Fedorova, Lyubov A. ;Vinogradova, Ludmila V. ;Klenin, Stanislav I. ;Baranovskaya, Inga A. ;Beck, Michael
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1989
- Weight
- 418 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0025-116X
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✦ Synopsis
Polyvinylpyridines activated by tris(x-allyl)chromium and by tetrakis (a-allyl)molybdenum or tetrakis(a-allyl)tungsten, complexed with tetrahydrofuran, were used for grafting with acrylonitrile. The products obtained, differing in the degree of branching, were characterized by various physical methods. Block copolymers of the types butadiene-acrylonitrile and styrene-oligobutadiene-acrylonitrile were synthesized by the use of tris(n-butadienyl)chromium as the initial active agent. Some molecular parameters of these block copolymers were established.