Molecular Formula and Degree of Unsaturation. Nature - DA - 1963 () Citation Context ...ntly, the rings-plusdouble-bonds equivalent (RDBE) or double-bond equivalent (DBE) concept was introduced in the 1950's [28,29], and shortly later, the term of "degree of unsaturation" was ...
2.If the molecular structure is given, the easiest way to solve is to count the number of double bonds, triple bonds and/or rings. However, you can also determine the molecular formula and solve for the degrees of unsaturation by using the formula. Show Answer 3.Use the formula to solve...
Thus, in one embodiment of the invention, there is provided a prepolymer obtained by reacting a polyol composition comprising at least the above-described PTMEG and a polyoxyalkylene polyether polyol having a degree of unsaturation of 0.04 or less, with an organic polyisocyanate. The prepolymer may ...
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Preferred polyether polyols have a level of unsaturation of less than 0.02 meq/g, especially less than 0.01 meq/g. Polyether polyester polyols. Polyacrylate polyols and polymethacrylate polyols. Polyacrylate or polymethacrylate polyols. Polyhydroxy-functional fats or oils, for example natural fats and ...
R3 is a univalent hydrocarbon group free of olefinic unsaturation, and R4 is an alkenyl group, and (C) a catalytically effective amount of an onium salt as photoinitiator. The copolymer (B) is usually also referred to as a so-called MQ or MQT resin. In addition, this resin fulfill...