Reactivities of Nonconjugated Dienes Used in Preparation of

358 D. L. CHRISTMAN AND G. I. KEIM

without consideration of the degree of branching, reproduces qualitatively the frequency dependence of J’ observed in Figure 2 at higher frequencies. Here it is assumed that an entanglement from which the shortest radiating strand is 112 monomer units long will contribute to the effective network only at frequencies exceeding a critical value w(m). The function w ( m ) can be determined from the frequency dependence of J’ for one sample (A-2) and the other J’ curves can be predicted from it, but the calculation is restricted to m