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OwnerLeonid V. Volodko, Mikhail A. Ksenofontov +7inventors
InventorsLeonid V. Volodko, Mikhail A. Ksenofontov, Ljudmila E. Ostrovskaya, Galina G. Dzivitskaya, Igor D. Goretsky, Vasily M. Khoruzhy, Nikolai M. Denisjuk, Anatoly Y. Volokh, Oleg N. Pogorelsky
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A method for producing a phenol foam plastic, consisting in that polycondensation of phenols with formaldehyde is conducted with simultaneous foaming and curing in the presence of a foaming agent and an acid or alkaline catalyst. Used as the phenols are pyrocatechol, hydroquinone, resorcinol, 5-methyl resorcinol, shale alkyl resorcinols, shale total phenols, or various combinations of said phenols. The method is simple and permits obtaining a foam plastic with improved physico-mechanical properties.
A method for producing a phenol foam plastic, wherein polycondensation, foaming, and curing occur simultaneously, said method consisting essentially of mixing polycondensation of phenols selected from the group consisting of pyrocatechol, hydroquinone, resorcinol, 5-methyl resorcinol, shale alkyl resorcinols, shale total resorcinols, and various combinations thereof, with an aqueous formaldehyde solution in the presence of a foaming agent and a catalyst selected from the group consisting of acid and alkaline catalysts.
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