Zl. Liu et al., SYNTHESIS AND CHARACTERIZATION OF (3,4-DIPHENYL-2,5-DIETHYL)PHENYL POLYVINYL SILICON OILS, Journal of applied polymer science, 66(5), 1997, pp. 997-1002
(3,4-Diphenyl-2,5-diethyl)phenyl-polyvinyl silicon oils (DPDEP-C-Gums)
have been synthesized by the Diels-Alder reaction of polyvinyl silico
n oil (C-Gum) with 3,4-diphenyl-2,5-diethylcyclopentadienone (DDCP) in
diphenyl ether at reflux temperature under normal pressure. The struc
tures of the prepared compounds were characterized by (HNMR)-H-1, infr
ared, and ultraviolet spectra, and some of their properties, such as c
olor, viscosity, refractive index, and thermal-oxidative stability wer
e obtained. (C) 1997 John Wiley & Sons, Inc.