Study of oligomerization of isoprene on initiation with hydrogen peroxide

Autor:	V.P. Boiko, T.S. Dmitriyeva, V.K. Grishchenko, V.I. Valuyev, T.S. Yatsimirskaya, R.A. Shlyakhter
Rok vydání:	1982
Předmět:	Chemistry organic chemicals General Engineering Isopropyl alcohol Oligomer carbohydrates (lipids) chemistry.chemical_compound Monomer Polymer chemistry Molecule Organic chemistry Bifunctional Hydrogen peroxide Isopropyl Isoprene
Zdroj:	Polymer Science U.S.S.R.. 24:1312-1318
ISSN:	0032-3950
DOI:	10.1016/0032-3950(82)90403-8
Popis:	Oligomerization of isoprene on initiation by hydrogen peroxide in solutions of methyl, ethyl, propyl and carbon-labelled isopropyl alcohols is studied. The radioactive label method reveals that the functionality of the oligomers for fragments of isopropyl alcohol is about 0·5 irrespective of the molecular weight of the oligomers and degree of monomer conversion. The presence of fragments of isopropyl alcohol with the terminal tertiary OH groups in the oligomer molecule is the cause of the reduced (below 2) “effective” functionality of the oligoisoprenes obtained in solution in isopropyl alcohol. In solutions in primary alcohols oligomers containing up to 90% of molecules bifunctional in hydroxyl groups are obtained.
Databáze:	OpenAIRE
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