Additive compound for curing halogenated polymers

Organic compounds -- part of the class 532-570 series – Organic compounds – Nitrogen attached directly or indirectly to the purine ring...

Reexamination Certificate

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C508S274000, C548S148000, C524S084000, C525S373000

Reexamination Certificate



The present invention relates to 1,3,4-thiadiazole reaction products useful as accelerators and/or curing agents for halogenated polymers in rubber vulcanization processes, and to halogenated polymer compositions containing the thiadiazole derivatives, as well as a method of preparing the same.The additive is the reaction product of a 1,3,4-thiadiazole compound and a dithiocarbamic acid or an amine, or an isomer thereof.

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patent: 5538652 (1996-07-01), Farng et al.
patent: 5686397 (1997-11-01), Baranski et al.
patent: 5773523 (1998-06-01), Karol et al.
patent: 6255259 (2001-07-01), Camenzind et al.


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