Disclosed herein are oligomerization processes using feedstocks containing propylene to produce an oligomer product, and methods for recovering a propylene oligomer from the oligomer product. The resultant propylene oligomer can be characterized by a Mn in a range from 250 to 10,000 g/mol, a viscosity index of at least 85, and a pour point in a range from 5 to 60 C.

Provided is a coated steel sheet having excellent press formability. The coated steel sheet includes a base steel sheet and, on at least one side of the base steel sheet, a film containing organic resin and wax. The organic resin is at least one selected from the group consisting of acrylic resins, epoxy resins, urethane resins, phenolic resins, vinyl acetate resins, and polyester resins. The wax is polyolefin wax having a melting point that is 100 C. or more and 145 C. or less and an average particle size that is 3.0 m or less. The proportion of the wax in the film is 5 mass % or more and 70 mass % or less. Coating weight variation is 0.300 or less. Coating weight .sub.W of the film is 0.3 g/m.sup.2 or more.

Provided is a coated steel sheet having excellent press formability. The coated steel sheet includes a base steel sheet and, on at least one side of the base steel sheet, a film containing organic resin and wax. The organic resin is at least one selected from the group consisting of acrylic resins, epoxy resins, urethane resins, phenolic resins, vinyl acetate resins, and polyester resins. The wax is polyolefin wax having a melting point that is 100 C. or more and 145 C. or less and an average particle size that is 3.0 m or less. The proportion of the wax in the film is 5 mass % or more and 70 mass % or less. Coating weight variation is 0.300 or less. Coating weight .sub.W of the film is 0.3 g/m.sup.2 or more.

Methods and compositions for preparing an elastomeric gel block comprising a lubricious surface are provided. A closure or interconnect system sealed with the elastomeric gel block comprising a lubricious surface can exhibit reduced adhesiveness, reduced tack time, and requires substantially reduced force to re-open the closure or interconnect system.

Methods and compositions for preparing an elastomeric gel block comprising a lubricious surface are provided. A closure or interconnect system sealed with the elastomeric gel block comprising a lubricious surface can exhibit reduced adhesiveness, reduced tack time, and requires substantially reduced force to re-open the closure or interconnect system.

One aspect of the present invention relates to a sliding composition film or a method for producing a sliding composition, the sliding composition including an ethylene/-olefin/nonconjugated polyene copolymer (A); a propylene-based random copolymer (B1) and a propylene homopolymer (B2), having a melt flow rate of 0.1 to 4.0 g/10 min; high-density polyethylene (C1) having a density of 940 to 970 kg/m.sup.3 and a MFR of 0.1 g/10 min or less; ultra-high molecular weight polyethylene (C2) having an intrinsic viscosity [] of 10 to 40 dl/g (in decalin at 135 C.), an average particle size D.sub.50 of 22 to 50 m, and a density of less than 940 kg/m.sup.3; and a silicone compound (D) having a kinematic viscosity of 3,000 to 1,000,000 cSt (at 25 C.) in each predetermined content, in which the ethylene/-olefin/nonconjugated polyene copolymer (A) is at least partially cross-linked with a phenolic resin-based cross-linking agent.

One aspect of the present invention relates to a sliding composition film or a method for producing a sliding composition, the sliding composition including an ethylene/-olefin/nonconjugated polyene copolymer (A); a propylene-based random copolymer (B1) and a propylene homopolymer (B2), having a melt flow rate of 0.1 to 4.0 g/10 min; high-density polyethylene (C1) having a density of 940 to 970 kg/m.sup.3 and a MFR of 0.1 g/10 min or less; ultra-high molecular weight polyethylene (C2) having an intrinsic viscosity [] of 10 to 40 dl/g (in decalin at 135 C.), an average particle size D.sub.50 of 22 to 50 m, and a density of less than 940 kg/m.sup.3; and a silicone compound (D) having a kinematic viscosity of 3,000 to 1,000,000 cSt (at 25 C.) in each predetermined content, in which the ethylene/-olefin/nonconjugated polyene copolymer (A) is at least partially cross-linked with a phenolic resin-based cross-linking agent.

A thermally conductive grease composition containing a matrix resin and a thermally conductive filler. The matrix resin contains a liquid dimethylpolysiloxane (A) having a kinematic viscosity of 100 to 10,000 mm.sup.2/s at 40 C. and an ethylene-propylene copolymer (B) having a kinematic viscosity of 1 to 10,000 mm.sup.2/s at 40 C. The matrix resin contains 50 parts by mass or more and 97 parts by mass or less of the liquid dimethylpolysiloxane (A) and 3 parts by mass or more and 50 parts by mass or less of the ethylene-propylene copolymer (B) where a total amount of the liquid dimethylpolysiloxane (A) and the ethylene-propylene copolymer (B) is 100 parts by mass. The thermally conductive filler is present in an amount of 400 to 2500 parts by mass with respect to 100 parts by mass of the total amount of the liquid dimethylpolysiloxane (A) and the ethylene-propylene copolymer (B).

A thermally conductive grease composition containing a matrix resin and a thermally conductive filler. The matrix resin contains a liquid dimethylpolysiloxane (A) having a kinematic viscosity of 100 to 10,000 mm.sup.2/s at 40 C. and an ethylene-propylene copolymer (B) having a kinematic viscosity of 1 to 10,000 mm.sup.2/s at 40 C. The matrix resin contains 50 parts by mass or more and 97 parts by mass or less of the liquid dimethylpolysiloxane (A) and 3 parts by mass or more and 50 parts by mass or less of the ethylene-propylene copolymer (B) where a total amount of the liquid dimethylpolysiloxane (A) and the ethylene-propylene copolymer (B) is 100 parts by mass. The thermally conductive filler is present in an amount of 400 to 2500 parts by mass with respect to 100 parts by mass of the total amount of the liquid dimethylpolysiloxane (A) and the ethylene-propylene copolymer (B).