Method for improving properties of vulcanized rubber containing

Details Method for improving properties of vulcanized rubber containing Method for improving properties of vulcanized rubber containing

1992-07-28

1993-06-08

Bleutge, John C.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524260, 524574, 524575, 524576, 524566, C08K 532, C08K 517

Patent

active

052180255

ABSTRACT:
Rubber filled with an inorganic whity filler such as white carbon is improved in its vulcanized rubber properties such as tensile strength, tear strength and heat build-up resistance by incorporating thereto a dinitrodiamine compound represented by the formula of ##STR1## wherein X is a divalent aliphatic, alicyclic or aromatic group which may contain halogen or oxygen in the group, R.sup.1 is hydrogen, an aliphatic group, an alicyclic group or an aromatic group, with the proviso that two nitrogen atoms linking through X may further link through R.sup.1 when both X and R.sup.1 are the aliphatic groups, and R.sup.2 and R.sup.3 independently of one another are each hydrogen or an alkyl of 1 to 12 carbon atoms, with the proviso that R.sup.2 and R.sup.3 may conjointly form a ring. The dinitrodiamine compound acts as a coupling agent for the rubber and the inorganic whity filler.

REFERENCES:
patent: 3756969 (1973-09-01), Danielson
patent: 3892577 (1975-07-01), Sugahara et al.
patent: 4507418 (1984-03-01), Utsunomipa et al.

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