Sumitomo Chemical Company, Limited

Katsunari Inagaki

Mayumi Oshima

Seiichi Mabe

Mana Ito

Makoto Satoh

Tatsuo Sassa

Jun Kawashima

Ritsuo Setoh

Naoaki Maeda

Toru Fujii

Jun Ohara

Keisaku Yamamoto

Takeshi Fujii

Yoshihiro Nakatsuji

Kizuku Wakatsuki

Tadaaki Nishiyama

Kiyoyuki Sugimori

Hayato Saba

Hiroshi Aoshima

Takuya Sudo

Masako Imai

Mitsuyoshi Odashima

Yuji Saga

The invention relates to a method for producing a modified conjugated diene-based polymer, comprising a step of reacting an organometallic compound with a unit based on a modifying agent, in a conjugated diene-based polymer that has a unit based on a conjugated diene compound-containing monomer and a unit based on a modifying agent having a silicon atom, tin atom, germanium atom or phosphorus atom.

Method for producing modified conjugated diene polymer and method for producing polymer composition

A conjugated diene polymer rubber is provided that includes component (A) and component (B) below, component (A) having a content, with the total amount of component (A) and component (B) as 100% by weight, of from 5% to 90% by weight, and component (B) having a content of from 95% to 10% by weight,

Conjugated diene polymer rubber, and conjugated diene polymer rubber composition

The present invention provides a process for producing a conjugated diene-based polymer comprising polymerizing a monomer component comprising a conjugated diene compound and a silicon-containing vinyl compound using the following compounds (I) and (II), as a polymerization initiator component, wherein Rand Rrepresent a hydrocarbyl group having 1 to 20 carbon atoms optionally having a substituent.

Process for producing conjugated diene-based polymer, conjugated diene-based polymer, and conjugated diene-based polymer composition

The present invention provides a process for producing a conjugated diene-based polymer, comprising polymerizing a monomer component containing a conjugated diene compound and a silicon-containing vinyl compound using a polymerization initiator represented by the following formula (1) wherein, Rrepresents a hydrocarbylene group having 6 to 100 carbon atoms, Rand Rrepresent a hydrocarbyl group optionally having a substituent, or a trihydrocarbylsilyl group, or Rand Rare bonded to represent a hydrocarbylene group optionally having, as a hetero atom, at least one kind atom selected from the atomic group consisting of a silicon atom, a nitrogen atom and an oxygen atom.

A conjugated diene polymer comprising a constitutional unit based on a conjugated diene and a constitutional unit based on a compound represented by Formula (1) below,RSi(OR)RR&#x2003;&#x2003;(1)wherein m represents 1 or 2; n represents 1 or 2; m+n=2 or 3; Rrepresents a hydrocarbyl group having a polymerizable carbon-carbon double bond; Rrepresents a hydrocarbyl group, and, when there are plural Rs, Rs each may be the same or different; Rrepresents an aryl group that may have an oxygen-containing substituent, and, when there are plural Rs, Rs each may be the same or different; and Rrepresents an alkyl group or a substituted amino group.

Conjugated diene polymer, conjugated diene polymer composition, and method for producing conjugated diene polymer

A process for producing a modified polymer rubber comprising the steps of:

Process for producing modified polymer rubber

Disclosed are a conjugated diene-based polymer from which a polymer composition excellent in fuel cost-saving properties and elongation at break can be obtained, a polymer composition containing the conjugated diene-based polymer and a reinforcing agent, and a process for producing the conjugated diene-based polymer. There is provided a conjugated diene-based polymer having a conjugated diene unit, a monomer unit based on a compound represented by the following formula (1) and a monomer unit based on a compound represented by the following formula (2). wherein Rrepresents a hydrogen atom or a hydrocarbyl group, m is 0 or 1, Rrepresents a hydrocarbylene group, and X, Xand Xeach independently represent a substituted amino group, or a hydrocarbyl group optionally having a substituent, provided that at least one of X, Xand Xis a substituted amino group. wherein Rrepresents a hydrogen atom or a hydrocarbyl group, n is 0 or 1, Rrepresents a hydrocarbylene group, and A represents a substituted amino group, or a nitrogen-containing heterocyclic group.

Conjugated diene-based polymer, conjugated diene-based polymer composition, and process for producing conjugated diene-based polymer

Disclosed are a conjugated diene-based polymer from which a polymer composition excellent in fuel cost-saving properties and a tensile strength at break can be obtained. There is provided a conjugated diene-based polymer having a monomer unit based on a conjugated diene, a monomer unit based on a compound represented by the following formula (1), and a monomer unit based on a compound represented by the following formula (2), in which at least one end of the polymer is modified with the following compound (G).V-S&#x2003;&#x2003;(1)wherein Vrepresents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and Srepresents a substituted silyl group.)V-A&#x2003;&#x2003;(2)wherein Vrepresents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and Arepresents a substituted amino group, or a nitrogen-containing heterocyclic group.Compound (G): at least one kind of compound selected from the compound group consisting of a compound having an amino group optionally having a substituent and a carbonyl group, and a compound having an amino group optionally having a substituent and a thiocarbonyl group.

Conjugated diene polymer is provided that comprises a constitutional unit based on a conjugated diene and a constitutional unit based on a compound represented by Formula (1) below:RSi(&#x2014;R-A)R&#x2003;&#x2003;(1)wherein m represents an integer of 1 to 3; Rrepresents a hydrocarbyl group having a polymerizable carbon-carbon double bond; Rrepresents a hydrocarbylene group, and, when there are plural Rs, Rs each may be the same or different; A represents a substituted amino group, and, when there are plural A's, A's each may be the same or different; Rrepresents a hydrocarbyl group, a substituted hydrocarbyl group or a substituted amino group, and, when there are plural Rs, Rs each may be the same or different.

Disclosed are a conjugated diene-based polymer from which a polymer composition excellent in fuel cost-saving properties and elongation at break can be obtained, a polymer composition containing the conjugated diene-based polymer and a reinforcing agent, and a process for producing the conjugated diene-based polymer. A conjugated diene-based polymer obtained by reacting one end of a polymer having a monomer unit based on a conjugated diene, a monomer unit based on a compound represented by the following formula (1), and a monomer unit based on a compound represented by the following formula (2) with an alkoxysilane compound.V&#x2014;S&#x2003;&#x2003;(1)wherein Vrepresents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and Srepresents a substituted silyl group.V-A&#x2003;&#x2003;(2)wherein Vrepresents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and Arepresents a substituted amino group, or a nitrogen-containing heterocyclic group.

A conjugated diene polymer obtained by reacting one end of a conjugated diene polymer having a monomer unit based on a conjugated diene and a monomer unit based on a compound represented by Formula (1) with a compound represented by Formula (2) wherein the content of the monomer unit based on the compound represented by Formula (1) is 0.01 to 20% by weight relative to 100% by weight of the total amount of the monomer unit in the conjugated diene polymer: wherein R, R, R-R,A, m and n are as defined in the specification.

There are provided (I) a process for producing a copolymer of ethylene, an &#x3b1;-olefin having from 3 to 20 carbon atoms and optionally a polyene, which comprises the step of copolymerizing those monomers in a polymerization reactor by feeding the following components (A), (B), (C1) and (D) to the polymerization reactor:

Process for producing copolymer

A method for producing a conjugated diene polymer is provided that includes a step of polymerizing a conjugated diene-containing monomer in a hydrocarbon solvent in the presence of an alkali metal catalyst, thus giving a polymer having a catalyst-derived alkali metal at one terminus of a polymer chain comprising a conjugated diene-based monomer unit, and a step of reacting the polymer obtained in the step of polymerizing and a trialkoxysilane compound represented by the formula below. (In the formula, Y and Z independently denote an oxygen atom or a sulfur atom, R, R, and Rindependently denote an alkyl group having 1 to 4 carbon atoms, m denotes an integer of 1 to 5, and n denotes an integer of 0 to 5.) There are also provided a conjugated diene polymer produced by the production method, and a polymer composition containing a rubber component that includes the conjugated diene polymer and carbon black and/or silica, the total content of the carbon black and the silica being 5 to 200 parts by weight relative to 100 parts by weight of the rubber component.

Method for producing conjugated diene polymer, conjugated diene polymer, and polymer composition

A method for producing a conjugated diene polymer is provided that includes a step of polymerizing a conjugated diene-containing monomer in a hydrocarbon solvent in the presence of an alkali metal catalyst, thus giving a polymer having a catalyst-derived alkali metal at one terminus of a polymer chain comprising a conjugated diene-based monomer unit, and a step of reacting the polymer obtained in the step of polymerizing and a trialkoxysilane compound represented by the formula below. (In the formula, M denotes an oxygen atom or a sulfur atom, R, R, and Rindependently denote an alkyl group having 1 to 4 carbon atoms, m denotes an integer of 1 to 5, and n denotes an integer of 0 to 5.) There are also provided a conjugated diene polymer produced by the production method, and a polymer composition containing a rubber component that includes the conjugated diene polymer and carbon black and/or silica, the total content of the carbon black and the silica being 5 to 200 parts by weight relative to 100 parts by weight of the rubber component.

Growing community of inventors

Ichihara, Japan

Katsunari Inagaki