Crosslinked rubber particles and rubber compositions

Details Crosslinked rubber particles and rubber compositions Crosslinked rubber particles and rubber compositions

2005-12-20

2005-12-20

Zalukaeva, Tatyana (Department: 1713)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S326000, C526S335000, C526S337000, C526S340000, C526S909000, C526S307000, C526S273000

Reexamination Certificate

active

06977286

ABSTRACT:
An objective of the invention is to provide a rubber composition which has satisfactory processability and dimension stability, and the like, gives a vulcanized rubber exhibiting excellent wearing resistance and tensile strength, and the like, and thus is useful in a belt, a hose and a tire and the like, as well as a crosslinked rubber particle for obtaining such rubber composition. A rubber composition of the invention comprises [1] a crosslinked rubber particle comprising as repeating units (a) 30 to 94.89% by weight of a conjugated diene unit, (b) 5 to 69.89% by weight of an aromatic vinyl unit, (c) 0.01 to 10% by weight of a monomer unit having at least two polymerizable unsaturated group, (d) one polymerizable unsaturated group and an amino group, a hydroxyl group and an epoxy group and (e) 0.1 to 30% by weight of a monomer unit having one polymerizable unsaturated group and a carboxylic group and having a particle size of 10 to 500 nm and a toluene-insolubles of 80% by weight or more and [2] a non-crosslinked rubber component whose toluene-insolubles is less than 20% by weight.

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