JOURNAL OF POLYMER SCIENCE: Polyaer Cbe4nisby Edition ... 3144 HAAS, SCHULER, AND MACDONALD ... After isolation by freeze drying and drying over P205 under vacuum the product was analyzed for C, H, N, and oxygen (direct).* Found: C, 43.7y0; H, 8.ZZyO; PI;, 22.44 ...