G. Corfield, H. H. Monks, L. Ellinger
Nov 1, 1975
Citations
0
Influential Citations
2
Citations
Journal
Polymer
Abstract
Copolymerizations of 1,3-divinylimidazolid-2-one (DVI), 1,3-divinylhexahydropyrimid-2-one (DVHHP) and 1-ethyl-3-vinylimidazolid-2-one (EVI) with ethyl acrylate (EA) have been carried out and reactivity ratios determined. For DVI-EA, r1 = 0.090, r2 = 0.388; DVHHP-EA, r1 = 0.137, r2 = 0.549; EVI-EA, r1 = 0.094, r2 = 0.530. The Q and e values for these N-vinylureas have been calculated. 1,3-Diphenyl-1,3-divinylurea inhibits or retards the polymerization of other monomers. The results support the proposal that the N,N'-divinylureas are highly conjugated molecules.