J. A. Beckman, G. Crane, E. L. Kay and J. R. Laman, Presentation at the Spring Meeting of the Akron Rubber Group, April 21, 1972, Akron, Ohio. Published in Rubber Age Vol. 105, No. 4,43, April, 1973. L. B. Wakefield, U.S. Patent 3,809,680 (1974).
2.
For example see M. Sherriff, R.W. Knibbs and P.G. Langley, J. Applied Polymer Science, Vol. 17, No. 11, 3423, November, 1973
3.
; and M. Toyama, T. Ito, H. Nukatsuka and M. Ikeda, Ibid. 3495.
4.
Encyclopedia of Polymer Science and Technology, lnterscience Publishers, Vol. 7, 539; Vol. 9, 853 and Vol. 13, 575.
5.
Vanderbilt Rubber Handbook, 1968 Edition, Reclaimed Rubber by J. M. Ball, 133.