To provide a catalyst composition having high polymerization activity. To provide a polymer manufacturing method. To provide a polymer manufactured by the polymer manufacturing method. To provide a rubber composition including the polymer. To provide a tire using the rubber composition. A catalyst composition including a compound represented by Structural Formula I below, wherein the compound has an OH group at at least one position of the bipyridyl ring; M is a transition metal, a lanthanoid, scandium, or yttrium; R.sup.1 and R.sup.2 are a hydrocarbon group having one or more carbon atoms or a halogen atom; and R.sup.1 and R.sup.2 may be the same or different from each other. A polymer manufacturing method including a step of polymerizing one or more selected from the group consisting of a conjugated diene compound and a compound having an ethylenically unsaturated double bond in the presence of the catalyst composition. A polymer manufactured by the manufacturing method. A rubber composition including the polymer. A tire using the rubber composition. ##STR00001##

A roofing membrane and a method of making the same is provided. The roofing membrane includes a top layer having a flame retardant and a first silane-crosslinked polyolefin elastomer with a density less than 0.90 g/cm.sup.3; a scrim layer; and a bottom layer having a flame retardant and a second silane-crosslinked polyolefin elastomer with a density less than 0.90 g/cm.sup.3. The top and bottom layers of the roofing membrane both exhibit a compression set of from about 5.0% to about 35.0%, as measured according to ASTM D 395 (22 hrs @ 70° C.).

The present disclosure relates to a container comprising a propylene, ethylene, and 1-hexene terpolymer comprising: (i) an ethylene content of 0.6-1.1 wt %; (ii) a 1-hexene content of 1.1-2.8 wt %; (iii) an ethylene to 1-hexene ratio (C.sub.2/C.sub.6) that fulfills the following equation (I);

C.sub.2/C.sub.6<0.39; wherein C.sub.2 is the ethylene content and C.sub.6 is the 1-hexene content; and (iv) the melt flow rate (MFR, ISO 1133, 230° C., 2.16 kg) is 32-64 g/10 min.

The present disclosure relates to a container comprising a propylene, ethylene, and 1-hexene terpolymer comprising: (i) an ethylene content of 0.6-1.1 wt %; (ii) a 1-hexene content of 1.1-2.8 wt %; (iii) an ethylene to 1-hexene ratio (C.sub.2/C.sub.6) that fulfills the following equation (I);

C.sub.2/C.sub.6<0.39; wherein C.sub.2 is the ethylene content and C.sub.6 is the 1-hexene content; and (iv) the melt flow rate (MFR, ISO 1133, 230° C., 2.16 kg) is 32-64 g/10 min.

Foam compositions comprise at least an ethylene/α-olefin interpolymer. The ethylene/α-olefin interpolymers of the present disclosure are multi-block copolymers comprising at least one soft block and at least one hard block. The foam compositions can further comprise a blowing agent and a cross-linking agent. Methods of making the foam compositions and foamed articles made from the foam compositions are also described.

Foam compositions comprise at least an ethylene/α-olefin interpolymer. The ethylene/α-olefin interpolymers of the present disclosure are multi-block copolymers comprising at least one soft block and at least one hard block. The foam compositions can further comprise a blowing agent and a cross-linking agent. Methods of making the foam compositions and foamed articles made from the foam compositions are also described.

The present invention is directed towards random-heterophasic propylene copolymers with a specific ratio of stiffness to impact balance and specific relation between glass transition temperature and comonomer content. The invention is further directed to articles comprising said random-heterophasic propylene copolymer and their use.

The present invention is directed towards random-heterophasic propylene copolymers with a specific ratio of stiffness to impact balance and specific relation between glass transition temperature and comonomer content. The invention is further directed to articles comprising said random-heterophasic propylene copolymer and their use.

A modified conjugated diene-based polymer, and more particularly, a modified conjugated diene-based polymer having a unimodal molecular weight distribution curve measured by gel permeation chromatography (GPC), molecular weight distribution (PDI; MWD) of less than 1.7, and a Si content of 100 ppm or more based on weight, and including a repeating unit derived from an aromatic vinyl monomer in an amount of greater than 0 wt % and less than 15 wt %, and a rubber composition including the same.

(Problem) To provide an electrolyte film for fuel cells, capable of achieving both low resistance (film thinning) and high dimensional stability.

(Solution) An electrolyte film for fuel cells, the electrolyte film comprising a polymeric electrolyte and a polytetrafluoroethylene (PTFE) porous film, characterized in that a material having an elastic modulus higher than that of the material constituting the PTFE porous film is composited on the inside surfaces of pores of the PTFE porous film, and the composited PTFE porous film has an elastic modulus of at least 150 MPa.