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Atactic polypropylene as a viscosity index improver for low-temperature oils

✍ Scribed by A. P. Alekseev; V. V. Leonenko; G. A. Safonov


Publisher
Springer US
Year
1992
Tongue
English
Weight
279 KB
Volume
28
Category
Article
ISSN
0009-3092

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An improved synthesis of the lipophile 18F-fluoropropane, yielding 30-45 mCi 18F-labelled radiopharmaceutical, is described. The radiochemical yield was 55%-66% determined at the end of a 1-h synthesis. Radiochemical and chemical purity of 18F-fluoropropane was 99% as determined by gas chromatograph