USE OF ARYLGUANIDINIUM XANTHATE AS VULCANIZATION ACCELERATOR, AND ITS PRODUCTION

PROBLEM TO BE SOLVED: To obtain a vulcanization accelerator usable without accompanying the risk of generating nitrosamine in the vulcanization of the rubber at all by including an arylguanidinium xanthate. SOLUTION: This vulcanization accelerator contains an arylguanidinium xanthate of formula I (R...

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Hauptverfasser: HEILIGER LUDGER, LOHWASSER HERMANN, FRUEH THOMAS DR
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To obtain a vulcanization accelerator usable without accompanying the risk of generating nitrosamine in the vulcanization of the rubber at all by including an arylguanidinium xanthate. SOLUTION: This vulcanization accelerator contains an arylguanidinium xanthate of formula I (R1 to R3 are each an aryl residue or H; n is 1-6, or when Y represents a monomer unit of a polymer, n is 2-20,000; Y is a hydrocarbon residue derived from a monohydric or polyhydric alcohol, or the like). The compound of formula I is preferably obtained by reacting an arylguanidinium salt (II) of formula II (A is Cl, SO4, PO4 or acetate; m is 1-3) with a salt of xanthogenic acid of formula III (B is an alkali metal or an alkaline earth metal; m is 1 or 2; x is n/m).