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JP5674651B2 |
A polymerization catalyst composition for preparing cis 1,4-polydienes is provided. The catalyst composition comprises (a) a metal-containing compound, said metal being a transition metal or a lanthanide metal; (b) a carbene, (c) an alky...
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JPWO2012165543A1 |
The inorganic filler can be uniformly dispersed in a base material such as rubber or resin, and a molded product having excellent mechanical strength, wear resistance, etc. can be obtained from such a base material, more specifically. A ...
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JP5666425B2 |
A method for polymerizing conjugated diene monomer into polydienes, the method comprising: polymerizing conjugated diene monomer within a liquid-phase polymerization mixture that includes conjugated diene monomer, a lanthanide-based cata...
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JP5667979B2 |
Farnesene interpolymer comprises units derived from a farnesene (e.g., α-farnesene or β-farnesene) and units derived from at least one vinyl monomer. The farnesene interpolymer can be prepared by copolymerizing the farnesene and at lea...
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JP5665651B2 |
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JP5664971B2 |
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JP5658682B2 |
The present invention relates to a novel initiating system for the preparation of a living diene elastomer functionalized at the chain end by an amine group by anionic polymerization. The novel initiating system comprises an organolithiu...
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JP5658011B2 |
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JP5656869B2 |
A vulcanizable composition of matter comprising a rubber component, a filler, a curative for the rubber, where the rubber component includes a multi-modal polymer including at least two distinct peak molecular weights within a range defi...
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JP5652919B2 |
A fluorine-containing polymer obtained using a 1,6-diene ether compound represented by formula [1] is a high-performance polymer exhibiting a low refractive index, high glass transition point, a high degree of transparency, and solubilit...
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JP5644803B2 |
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JP5644802B2 |
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JP5646947B2 |
To provide a method of producing a branched-and-modified conjugated diene-based polymer, wherein the method can simultaneously perform the formation of branching and the introduction of a functional group, and can achieve high branching ...
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JP5642542B2 |
A method for preparing a functionalized polymer, the method comprising the steps of preparing a reactive polymer, and reacting the reactive polymer with a halosilane compound containing an amino group.
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JP5642995B2 |
New 1,2,3- or 1,2,3,4- or 1,2,3,4,5- substituted imidazolium salts and their uses as solvent in catalyzed organic reactions, as well as compositions containing them and a transition metal compound. They can be used in the following react...
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JP5639077B2 |
An object of the present invention is to provide a method for producing a polybutadiene by anionic polymerization at a low temperature, in which the microstructures thereof is controlled to polybutadienes having diverse physical properti...
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JP2014227376A |
To provide: a novel yttrium compound containing nitrogen atoms, and a conjugated diene polymerization catalyst using the same; and a conjugated diene polymer production method characterized by polymerizing a conjugated diene compound usi...
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JP2014227458A |
To provide a modifier capable of further improving dispersibility of a rubber component and a silica filler and giving effect excellent in low heat generation properties and abrasion resistance; a method for producing a modified conjugat...
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JP5633425B2 |
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JP5629758B2 |
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JP2014211637A |
To provide a liquid crystal film that has excellent properties including durability and an optical property and is capable of being effectively used for various uses.A liquid crystal film comprises: a substrate; an alignment layer that i...
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JP5624980B2 |
It has been found that certain cells in culture can convert more than about 0.002 percent of the carbon available in the cell culture medium into isoprene. These cells have a heterologous nucleic acid that (i) encodes an isoprene synthas...
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JP5623514B2 |
The present invention relates to a novel catalytic system for polymerization, and more particularly for preparing conjugated diene polymers bearing a polar function at the chain end. This catalytic system is based on a metal salt of a ra...
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JP5624986B2 |
Adhesive composition comprises a polyfarnesene and a tackifier. The polyfarnesene can be a farnesene homopolymer derived from a farnesene (e.g., a-farnesene or ß-farnesene) or a farnesene interpolymer derived from a farnesene and at lea...
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JP2014208755A |
To provide a new yttrium compound containing a nitrogen atom and an oxygen atom and a conjugated diene polymerization catalyst using the same, and especially to provide a polymerization catalyst capable of highly efficiently producing a ...
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JP5618455B2 |
Use is claimed as a catalyst for metathesis of nitrile rubbers of a ruthenium or osmium compound (I). Use is claimed as a catalyst for metathesis of nitrile rubbers of a ruthenium or osmium compound of formula (I). M : Ru or Os; Y : O, S...
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JP5618454B2 |
A new catalyst system comprising a metathesis catalyst and one or more salts of mono-, di- and/or tri-valent cations other than copper. A new catalyst system comprising a metathesis catalyst and one or more salts of formula K n+> A z-> (...
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JP5618291B2 |
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JP2014528988A |
Preparation of a functionalized polymer comprising (i) a step of polymerizing a monomer to form a reactive polymer and (ii) a step of reacting the reactive polymer with a lactone or thiolactone containing a protected amino group. Method....
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JP2014201693A |
To provide a pneumatic tire.A rubber composition for a base tread is provided, which has a content of 5 mass% or more of the following conjugate diene polymer in 100 mass% of a rubber component: the conjugate diene polymer is obtained by...
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JP5612599B2 |
Butadiene copolymers are brominated using certain quaternary ammonium or phosphonium tribromides as the brominating agent. The bromination is performed in solution in a mixture of n-butyl acetate and ethyl acetate. The bromination proces...
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JP2014196496A |
To provide a novel ansa-metallocene structure for selective preparation of racemic complexes containing little meso-isomers.A metallocene compound in which the 4 and 7 positions of the indenyl part have large aromatic substituents is pre...
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JP5604786B2 |
A method for producing a modified conjugated diene polymer includes carrying out a modification reaction that reacts a modifier that includes a specific compound with a conjugated diene polymer having a cis-1,4-bond content of 98.5% or m...
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JP5604936B2 |
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JP5603356B2 |
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JP2014189678A |
To provide a modified cis-1,4-polybutadiene capable, while greatly ameliorating workability, which is an important characteristic of a rubber material, of also improving the low-loss profile and abrasion resistance performance; a method ...
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JP5599188B2 |
The invention is a method of producing an essentially electrically neutral polymer dispersion, comprising a polymerizing one or more monomers in the presence of a nonionic surfactant, wherein the polymerization preferably occurs in the a...
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JP5596174B2 |
An oxolanyl compound-containing composition comprising specified amounts of the meso-isomer of one or more of the oxolanyl compounds of specified structure is provided. Also provided are methods for the use of such compositions as vinyl ...
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JP2014169448A |
To provide a functionalized polymer produced by bringing a functionalizing agent into contact with a quasi-living polymer, and to provide a functionalization method of such kind of polymer.A functionalized polymer is generated by using a...
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JP5591543B2 |
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JP2014167133A |
To provide a method of continuously producing a polymer including a branched component and a linear component.A polymer including a branched component and a linear component is obtained by first polymerizing one or more conjugated dienes...
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JP5585451B2 |
Disclosed is a process for producing a conjugated diene polymer having a very high content of cis-1,4 structures by using an yttrium compound-containing catalyst that is relatively easy to handle and has a high activity. Specifically dis...
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JP2014162809A |
To provide a rubber composition excellent in low rolling resistance and wet performance and also excellent in scorching property when the rubber composition is formed into a tire.The rubber composition comprises a rubber component contai...
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JP5583322B2 |
The present invention is directed to a catalyst system for synthesizing rubbery polymers, such as polybutadiene rubber, styrene-butadiene rubber, isoprene-butadiene rubber, or styrene-isoprene-butadiene rubber, that are amine functionali...
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JP5584239B2 |
A catalyst composition comprising (a) an iron-containing compound, (b) a dihydrocarbyl hydrogen phosphite, and (c) an organoaluminum compound is disclosed for polymerizing 1,3-butadiene into syndiotactic 1,2-polybutadiene. The use of the...
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JP5581990B2 |
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JP5583343B2 |
The present invention relates to a process for the continuous preparation of a catalytic system that can be used for the polymerization of at least one conjugated diene monomer, said catalytic system being based on at least: a preforming...
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JP5550519B6 |
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JPWO2012133204A1 |
The present invention provides a battery capable of suppressing elution of electrode components into an electrolytic solution. The present invention is a battery having an electrode containing a pyrroline-based nitroxide polymer and an e...
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JP5559160B2 |
Compositions comprising a coupled interpolymer such as polybutadiene which may be suitable for HIPS and ABS have been discovered. The coupled interpolymer composition comprises an interpolymer comprising one or more monomeric units deriv...
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