ISSN:
1436-2449
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Summary The copolymerization of isobutene (I) and 1,1,4,4-tetramethyl-1,-3-butadiene (TMB) was carried out easily and for the first time at −30°C, in a homogeneuos medium and using EtAlCl2 as catalyst. The structure of TMB in the copolymer is exclusively trans-1,4 while the monomer distribution, studied by C-NMR, is random. Using the values of the dyad and triad (centered on I) fractions, the reactivity ratios of both the monomers were obtained according to a procedure previously described: rI=2.0 ±0.4 and rTMB=0.4±0.2.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00275580
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