Accelerator system for synthetic polyisoprene latex

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

Reexamination Certificate

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C525S332600, C525S332700, C524S571000, C524S201000, C524S202000, C524S203000, C524S211000, C524S216000

Reexamination Certificate



The invention pertains to an accelerator system, such as an accelerator system for synthetic polyisoprene latex. The accelerator system comprises dithiocarbamate and thiourea and can produce synthetic polyisoprene films having a tensile strength of about 3,000 psi to about 5,000 psi at low curing temperatures. The invention also pertains to a method for curing synthetic polyisoprene latex.

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patent: 6828387 (2004-12-01), Wang et al.
patent: 2002/0173563 (2002-11-01), Wang et al.
patent: 1185896 (1968-07-01), None
patent: 1185896 (1970-03-01), None
patent: 55-144037 (1980-11-01), None
JP 55-144037 (English translation).
Neoprene Latex, E.I. duPont deNemours & Co., Inc., 1962, J. Carl.
Polychloroprene Latexes, The Vanderbilt Latex Handbook, Third Edition, R. T. Vanderbilt Company, Inc. 1987, J. Fitch.
Structural Characterization of Vulcanizates. Part III. The cis-1,4-Polyisoprene Tetramethylthiuram Disulfide-Zinc Oxide System, Journal of Applied Polymer Science, vol. 8, pp. 581-602 (1964), C.G. Moore and A.A. Watson.


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