A vulcanizable composition comprising rubber component, a filler, and a curing agent, where the rubber component includes a block copolymer of polybutadiene and polyisoprene, and where the block copolymer has a cis content of at least 90%.

The present invention relates to a method of producing a polymer including: polymerizing a compound represented by the following formula (3); or copolymerizing the compound represented by the following formula (3) with a compound (6) having a reactive carbon-carbon double bond and differing from the compound represented by the following formula (3), in a presence of at least one compound selected from the group consisting of compounds represented by the following formula (1) and compounds represented by the following formula (2).

The present invention provides an olefin-based polymer which satisfies the following conditions of (1) to (4) and is capable of exhibiting improved impact strength without degrading mechanical properties such as tensile strength: (1) density (d): from 0.850 to 0.910 g/cc, (2) melting index (MI, 190 C., 2.16 kg load conditions): from 0.1 to 100 g/10 min, (3) molecular weight distribution (MWD): from 1.5 to 3.0, and (4) two peaks are shown in a temperature range of 20 C. to 120 C. when taking measurements of temperature rising elution fractionation (TREF), and a relation of T(90)T(50)60 C. is satisfied (where T(90) is a temperature at which 90 wt % of the olefin-based polymer is eluted, and T(50) is a temperature at which 50 wt % of the olefin-based polymer is eluted).

The present invention provides an olefin-based polymer which satisfies the following conditions of (1) to (4) and is capable of exhibiting improved impact strength without degrading mechanical properties such as tensile strength: (1) density (d): from 0.850 to 0.910 g/cc, (2) melting index (MI, 190 C., 2.16 kg load conditions): from 0.1 to 100 g/10 min, (3) molecular weight distribution (MWD): from 1.5 to 3.0, and (4) two peaks are shown in a temperature range of 20 C. to 120 C. when taking measurements of temperature rising elution fractionation (TREF), and a relation of T(90)T(50)60 C. is satisfied (where T(90) is a temperature at which 90 wt % of the olefin-based polymer is eluted, and T(50) is a temperature at which 50 wt % of the olefin-based polymer is eluted).

In an aspect, a curable composition comprises an acid catalyzed urethane (meth)acrylate oligomer comprising an acid catalyst; a cyanoacrylate monomer; a metallocene compound; a free radical polymerization inhibitor; and an acidic anionic polymerization inhibitor. In yet another aspect, a method of making a cured composition comprises forming the curable composition; and curing the curable composition by exposing it to light to form the cured composition.

In an aspect, a curable composition comprises an acid catalyzed urethane (meth)acrylate oligomer comprising an acid catalyst; a cyanoacrylate monomer; a metallocene compound; a free radical polymerization inhibitor; and an acidic anionic polymerization inhibitor. In yet another aspect, a method of making a cured composition comprises forming the curable composition; and curing the curable composition by exposing it to light to form the cured composition.

A vulcanizable composition comprising rubber component, a filler, and a curing agent, where the rubber component includes a block copolymer of polybutadiene and polyisoprene, and where the block copolymer has a cis content of at least 90%.

The invention relates to a method for the preparation of a polymerized CNSL composition, the method comprising subjecting a raw or technical CNSL to a heat treatment under reflux to obtain the polymerized CNSL composition, wherein the heat treatment is performed until the polymerized CNSL composition has a molecular weight M.sub.w of about 2800 to about 3700, such as from about 2900 to about 3600, or from about 3000 to about 3500 g/mol. The invention further relates to a polymerized CNSL composition, use of a polymerized CNSL composition according to the invention in a bitumen composition, a modified bitumen composition according to the invention and an asphalt composition comprising a modified bitumen composition according to the present invention.

The invention relates to a method for the preparation of a polymerized CNSL composition, the method comprising subjecting a raw or technical CNSL to a heat treatment under reflux to obtain the polymerized CNSL composition, wherein the heat treatment is performed until the polymerized CNSL composition has a molecular weight M.sub.w of about 2800 to about 3700, such as from about 2900 to about 3600, or from about 3000 to about 3500 g/mol. The invention further relates to a polymerized CNSL composition, use of a polymerized CNSL composition according to the invention in a bitumen composition, a modified bitumen composition according to the invention and an asphalt composition comprising a modified bitumen composition according to the present invention.

The present invention provides a hydrogenation catalyst, which can produce an olefin polymer having a higher molecular weight, and a process for producing an olefin polymer having a higher molecular weight, by controlling hydrogen concentration in a polymerization reaction system efficiently in polymerizing an olefin in the presence of hydrogen. There is provided a hydrogenation catalyst formed by contacting the undermentioned component (A), the undermentioned component (B), and the undermentioned component (C). There is further provided a process for producing an olefin polymer characterized by polymerizing an olefin in the presence of hydrogen, the undermentioned component (A), the undermentioned component (B), and the undermentioned component (D). Component (A): a titanocene compound; Component (B): a silicon compound represented by the undermentioned general formula [1]: Si(OR.sup.1).sub.4 [1]; Component (C): an alkyl metal compound; Component (D): a catalyst for olefin polymerization.