摘要:
A hydrogenated diene polymer composition comprises (A) a first hydrogenated diene polymer having a weight average molecular weight (Mw) of 100,000 to 1,700,000, a molecular weight distribution (Mw/Mn) of 1.0 to 3.0, and a hydrogenation degree of 72 to 96%, the first hydrogenated diene polymer (A) being obtained by hydrogenating the first diene polymer which has a vinyl bond content of 20 to 70%, and (B) a first filler. The hydrogenated diene polymer composition contains the first filler (B) in an amount of 5 to 100 parts by mass per 100 parts by mass of the first hydrogenated diene polymer (A).
摘要:
A modified hydrogenated diene polymer composition includes (A) a modified hydrogenated diene polymer obtained by hydrogenating a diene polymer having a vinyl bond content of 20 to 70%, the modified hydrogenated diene polymer having a weight average molecular weight (Mw) of 100,000 to 1,700,000, a molecular weight distribution (Mw/Mn) of 1.0 to 3.0, and a hydrogenation rate of 72 to 96%, and containing a functional group, and (B) a diene rubber, the modified hydrogenated diene polymer composition containing the modified hydrogenated diene polymer (A) and the diene rubber (B) in an amount of 100 parts by mass in total, the amount of the modified hydrogenated diene polymer (A) being 60 to 95 parts by mass, and the amount of the diene rubber (B) being 5 to 40 parts by mass.
摘要:
A modified conjugated diene polymer, which can be used as a raw material of a cross-linked polymer for automobile tires, is prepared by a method including a step of polymerizing a monomer having a conjugated diene compound etc. in the presence of a compound of formula (1) or (2) and an alkali metal compound to obtain a conjugated diene polymer, and a step of reacting the polymer and a compound of formula (3). In formulae (1) and (2), R1 is hydrocarbylene; Q is —N(-A1)- etc.; A1 is hydrocarbyl without active hydrogen atom and may have substituent(s). In formula (3), E is a functional group etc. which has no active hydrogen atom and is bound to R4 by an atom of N; R2 and R3 are hydrocarbyl groups; R4 is a hydrocarbylene group; and n is an integer of 0 to 2.
摘要:
A method for producing a modified conjugated diene polymer usable as a raw material of a crosslinked polymer which is used for use in tires and the like of automobiles and can enhance low fuel consumption performance of automobiles and the like is provided.A method for producing a modified conjugated diene polymer comprising a polymerization step in which a monomer including a conjugated diene compound or a monomer including a conjugated diene compound and an aromatic vinyl compound is polymerized in the presence of at least one compound selected from the group consisting of the following formulae (1) and (2) and an alkali metal compound or an alkaline earth metal compound to obtain a modified conjugated diene polymer. (In the formulae, A1 is a hydrocarbylsilyl group in which three H's (hydrogen atoms) in a “—SiH3” structure are each substituted by a hydrocarbyl group, and R1 and R2 are hydrocarbylene groups.)
摘要:
This invention relates to a method for producing a modified conjugated diene rubber wherein the method involves: (a) a step in which a conjugated diene polymer having an alkali metal or alkaline earth metal active end and obtained by polymerizing a conjugated diene compound or by polymerizing a conjugated diene compound with an aromatic vinyl compounds is reacted with a first alkoxysilane compound which has an alkoxysilyl group having two or more alkoxy groups and has a group protected by a protecting group wherein deprotection is possible to obtain a modified conjugated-diene polymer having an alkoxysilyl group; and (b) a step in which the modified conjugated-diene polymer is reacted with a second alkoxysilane compound which has an alkoxysilyl group.
摘要:
A method for producing a conjugated diene polymer usable as a raw material of a crosslinked polymer which is used for use in tires of automobiles and can enhance low fuel consumption performance of automobiles is provided.A method for producing a modified conjugated diene polymer comprising a polymerization step in which monomer including a conjugated diene compound or monomer including a conjugated diene compound and an aromatic vinyl compound are polymerized in the presence of at least one compound selected from the group consisting of the following formulae (1) and (2) and an alkali metal compound or an alkaline earth metal compound to obtain a modified conjugated diene polymer. (In the formulae, A1 is a functional group which has a three-substituted hydrocarbylsilyl group; has at least one atom selected from the group consisting of N, P and S; has no active hydrogen and is bound to R1 by any one atom of the above N, P and S. R1 and R2 are hydrocarbylene groups. In the formulae, R1, R2 and A1 which are each present in plurality may each be same or different.)
摘要:
A method for producing a modified conjugated diene polymer, comprises polymerizing (i) a monomer comprising a conjugated diene compound, or (ii) a monomer comprising a conjugated diene compound and an aromatic vinyl compound, in the presence of: at least one compound selected from the group consisting of formulae (1) and (2), and an alkali metal compound or an alkaline earth metal compound. A1 is a functional group which has a hydrocarbylsilyl group in which three hydrogen atoms in a —SiH3 structure are each substituted by a hydrocarbyl group; has at least one atom selected from the group consisting of N, P and S; and has no active hydrogen and is bound to R1 by any one atom of the N, P and S. R1 and R2 are hydrocarbylene groups.
摘要:
A method for producing a modified conjugated diene polymer usable as a raw material of a crosslinked polymer which is used for use in tires and the like of automobiles and can enhance low fuel consumption performance of automobiles and the like is provided.A method for producing a modified conjugated diene polymer comprising a polymerization step in which a monomer including a conjugated diene compound or a monomer including a conjugated diene compound and an aromatic vinyl compound is polymerized in the presence of at least one compound selected from the group consisting of the following formulae (1) and (2) and an alkali metal compound or an alkaline earth metal compound to obtain a modified conjugated diene polymer. (In the formulae, A1 is a hydrocarbylsilyl group in which three H's (hydrogen atoms) in a “—SiH3” structure are each substituted by a hydrocarbyl group, and R1 and R2 are hydrocarbylene groups.)
摘要:
This invention relates to a method for producing a modified conjugated diene rubber wherein the method involves: (a) a step in which a conjugated diene polymer having an alkali metal or alkaline earth metal active end and obtained by polymerizing a conjugated diene compound or by polymerizing a conjugated diene compound with an aromatic vinyl compounds is reacted with a first alkoxysilane compound which has an alkoxysilyl group having two or more alkoxy groups and has a group protected by a protecting group wherein deprotection is possible to obtain a modified conjugated-diene polymer having an alkoxysilyl group; and (b) a step in which the modified conjugated-diene polymer is reacted with a second alkoxysilane compound which has an alkoxysilyl group.