Cationic monomer-isomerization oligomerization of 2-methyl-2-butene

Autor:	Yu Xing Peng, Jia Lin Liu, Han Song Dai, Lin Feng Cun
Rok vydání:	1996
Předmět:	Polymers and Plastics Organic Chemistry Cationic polymerization Solution polymerization Alkylation Oligomer chemistry.chemical_compound Monomer chemistry Polymerization Polymer chemistry Materials Chemistry Lewis acids and bases Isomerization
Zdroj:	Polymer. 37:3979-3982
ISSN:	0032-3861
DOI:	10.1016/0032-3861(96)00200-5
Popis:	The polymerizations of 2-methyl-2-butene (2M2B) were carried out by various cationic initiators in different media at 30°C. All these polymerizations generate oily oligomers of rather low degrees of polymerization (3–5). Evidences from i.r. and 1H n.m.r. show that the oligomer chain contains structural units derived from both 2M2B and 2-methyl-1-butene (2M1B), which indicates that 2M2B isomerizes partially to 2M1B during the polymerization. The unsaturated endgroups also arise from chain transfers of both 2M2B and 2M1B growing carbocations by proton-elimination. The reaction carried out in toluene fails to produce any polymer or oligomer but generates an adduct of 2M2B and toluene by Friedel-Crafts alkylation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::104cbeda8ee2bc18844d56244c8d4b02 https://doi.org/10.1016/0032-3861(96)00200-5 Zobrazit plný text záznamu Full Text from ScienceDirect