Abstract: A soft resin pellet is provided comprising at least one liquid (B) having a kinematic viscosity at 25° C. ranging from 0.5 to 100,000 cSt (centistokes) and a surface tension at 25° C. ranging from 10 to 50 dyn/cm, and at least one fine powder (C) of an average particle diameter of not more than 50 ?m, which fine powder adheres to the surface of pellets of at least one soft resin having a tensile modulus determined according to ASTM D-658 not higher than 1600 Mpa.

Abstract: A soft resin pellet of the present invention comprises at least one liquid having a kinematic viscosity at 25° C. ranging from 0.5 to 100,000 cSt and a surface tension at 25° C. ranging from 10 to 50 dyn/cm, for example dimethylpolysiloxane, and at least one kind of fine powder of an average particle diameter of not more than 50 &mgr;m, for example calcium stearate, which adhere to the surface of pellets of at least one soft resin (A) selected from the group consisting of the resins (i)-(v) below and having a tensile modulus not higher than 1600 MPa with. The above-mentioned soft resin includes (i) specified ethylene/&agr;-olefin copolymers, (ii) specified propylene/&agr;-olefin copolymers, (iii) unsaturated olefin copolymers constituted of ethylene, an &agr;-olefin of 3-20 carbon atoms, and a (non)conjugated polyene monomer, (iv) ethylene/vinyl acetate copolymers containing vinyl acetate at a content ranging from 5 to 40% by weight, and (v) cycloolefin resins.

Abstract: A vulcanizable rubber composition comprising a blend which is prepared by micro-dispersing a polyolefin resin (B) in an ethylene-.alpha.-olefin-nonconjugated polyene copolymer rubber (A) comprising ethylene, a C.sub.3 -C.sub.20 .alpha.-olefin and a nonconjugated polyene in a molten state and in which the mean diameter of dispersed particles of the polyolefin resin (B) is 2 .mu.m or below and the (B) to (A) weight ratio ranges from 5/95 to 50/50. The micro-dispersion of a polyolefin resin (B) can easily be attained by kneading the components (A) and (B) together with compounding ingredients (such as reinforcement, filler, softener, vulcanization accelerator, vulcanizing agent and so on) in a rubber kneader, through the resin (B) is essentially difficult of micro-dispersion. Further, the composition enables the provision of rubber articles having a high and constant quality at a low cost, because the resin (B) can well be dispersed by conventional rubber kneaders in a short time without fail.