INDUSTRIAL AND ENGINEERING CHEMISTRY
1440
Vol. 40, No. 8
LITERATURE CITED
The butadiene-styrene-vinylpyridine terpolymers possess certain outstanding advantages over GR-S which would recommend their use for many specialty applications. Their excellent flexcrack resistance and aging prqperties would encourage the use of these polymers in compounds for conveyer belts, soles and heels, hose, and pressure-sensitive adhesives. Although the results of this investigation demonstrated that the vinylpyridine terpolymers had advantages over GR-S in tensile, flex-crack resistance, rebound, and aging properties, their use in tires has not been recommended, chiefly because of their lack of compatibility with GR-S and natural rubber. Several attempts (IS) to apply the 75: 20: 5 butadiene-styrene-vinylpyridine terpolymer as a tread stock for a n S-6 carcass were not very successful because of the strong tendency for the treads t o separate from the carcass under test conditions of only short duration. It was believed that greater building tack would be necessary before vinylpyridine rubber could find extensive use in tires.
Am. SOC.Testing Materials, Standards on RLbber Products, D412-41 (1941). Ibid., D430-40, Method B. Baker, W. O., and Mullen, J. W., private communication, September 1943. Chambers, V. S., McCleary, C. D., and Robinson, H. W., private communication, Dec. 6-7, 1943. D’Ianni, J. D., Marsh, J., and Findt, W. C., privste communice tion, June 24-25,1943. Ibid., Sept. 6, 1943. Zbid., Dec. 6-7, 1943. Frank, R. L., Adams, C. E., Blegen, J. R., Smith, P. V., Juve, A. E., Schroeder, C. H., and Goff, M . M., IND.ENQ. CHEM.,40,879 (1948). Ingmanson, J. H., Howard, J. B., and Wallder, 1’.T., private communication, Sept. 7, 1943. Lessig, E. T., IND.EKG.CHEM.,AXAL.ED.,9,582(1937). McCleary, C. D., Messer, W. E., and Howland, L. H., private communication, Sept. 13-14,1943,
National Synthetic Rubber Corp., “Standard Operating Procedures,” unpublished data. Nellen, A. H., private communication. Schade, J. W., and Labbe, B. G., private communicatiou, Ma? 3 ,
ACKNOWLEDGMENT
1946.
The authors wish to acknowledge the assistance of the pilot plant staff in developing the vinylpyridine polymers studied in this paper and to thank J. H. Reppeto for the evaluation data reported,
RECEIVED May 23, 1947. The work described in this paper was carried out under the sponsorship of the Office of Rubber Reserve, Reconstruction Finance Corporation, in connection with the Government Synthetic Rubber Program.
Production of 2,3=Butanediol bv Fermentation of Cornstarch *I
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