INDUSTRIAL AND ENGINEERING CHEMISTRY
March 1948
ACKNOWLEDGMENT
The author appreciates the suggestions made by J. F. Nelson of the Standard Oil Development Company laboratories. Experiments on the effect of additives on the pyrolysis of polyisobutylene were carried out by T. G. Street, Jr. LITERATURE CITED
(1) Bachman, G . B., Hellman, H., Robinson, K. R., Finholt, R. W., Kahler. E. J., Filar, L. J., Heisey, L. V., Lewis, L. L., and Micucci, D. D., J . Org. Chem, 12, 108 (1947). (2) Frank, 3. C., Amos, J. L , and Straubel, A. F., U. S. Patent 2.359.212 (1944). (3) (4) (5) (6)
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Joyce, R. M Jr.. Ibid., 2,372,001 (1945). King, W. A., Ibid.. 2,395,829 (1946). Lebedev, S. V., and KoblyanskiI, G. G., Ber., 63B,1432 (1930). Midgley, T., Jr., Henne, A. L., and Leicester, H. M.. J. Am. Chem. SOC.,58, 1961 (1936).
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(7) Nelson, J. F., Standard Oil Development Co. Labs., private communication. (8) Philip, T B.. Stanley, H. M., and Wood, W. L., U. S. Patent 2,248,512 (1941); Brit. Patent 525,276 (1940). (9) Rice, F. O., and Johnson, W. R., J. Am.. Chem. SOC., 56, 214 (1934). (10) Rice, F. O., and Rice, K. K., “The Aliphatic Free Radicals,” Baltimore, Md., Johns Hopkins Press (1935). (11) Rosen, R., and Thomas, R. M., U.B. Patent 2,244,021 (1941). (12) Soday, F. J., Zbid., 2,372,524, -6, -7, -8 (1945). (13) Staudinger, H., and Steinhofer, A., Ann., 517, 35 (1935). (14) Taylor, H. S., and Tobolsky, A. V., J. Am. Chem. SOC.,67 2063 (1946). (15) Thomas, R. M., Sparks, W. J., Frolich, P K., Otto, M., and Mueller-Cunradi, M.. Zbid., 62.276 (1940). (16) Thomas, R. M., Zimmer, J. C., Turner, L. B., Rosen, R., and Frolich, P. K., IXD.ENG.CHEM,32, 299 (1940). RECBIVED September 11, 1946. Presented before the Division of Paint, Varnish, and Plastics Chemistry a t the 110th Meeting of the AMERICAN CHEMICAL SOCIETY, Chicago, Ill.
Vitamin B Content of Sugar Beets
and By-products DEXTER ROGERS‘ AND M. N. MICI
