摘要:
Objects of the present invention are to provide a rubber composition that can obtain a rubber elastic body having small rolling resistance and excellent impact resilience and a method for producing the same, and to provide a tire having small rolling resistance and excellent impact resilience. The rubber composition of the present invention is obtained by kneading a conjugated diene polymer (A) having a group with bonding reactivity to silica only at one site of one molecule of the polymer, a polymer (B) having groups with bonding reactivity to silica at a plurality of sites of one molecule of the polymer, and a filler (C) containing silica.
摘要:
Objects of the present invention are to provide a rubber composition that can obtain a rubber elastic body having small rolling resistance and excellent impact resilience and a method for producing the same, and to provide a tire having small rolling resistance and excellent impact resilience. The rubber composition of the present invention is obtained by kneading a conjugated diene polymer (A) having a group with bonding reactivity to silica only at one site of one molecule of the polymer, a polymer (B) having groups with bonding reactivity to silica at a plurality of sites of one molecule of the polymer, and a filler (C) containing silica.
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 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:
Objects of the present invention are to provide a rubber composition that can obtain a rubber elastic body having small rolling resistance and excellent impact resilience and a method for producing the same, and to provide a tire having small rolling resistance and excellent impact resilience. The rubber composition of the present invention is obtained by kneading a conjugated diene polymer (A) having a group with bonding reactivity to silica only at one site of one molecule of the polymer, a polymer (B) having groups with bonding reactivity to silica at a plurality of sites of one molecule of the polymer, and a filler (C) containing silica.
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 rubber composition that can be used in applications such as automotive tires and can improve the fuel efficiency performance and driving stability of automobiles and the like, a method for producing a rubber composition, and a tire using the same are provided.A rubber composition comprising: (A) a conjugated diene rubber which is obtained by polymerizing a conjugated diene compound or polymerizing a conjugated diene compound and an aromatic vinyl compound and has a group having an active hydrogen and a group capable of chemically binding to a silica, (B) a silica, (C) a silane coupling agent (I) capable of reacting with a carbon-carbon double bond of the conjugated diene in the conjugated diene rubber, and (D) a silane coupling agent (II) capable of reacting with the group having an active hydrogen; a method for producing a rubber composition, which comprises mixing the above-mentioned composition; and a tire which is obtained by crosslinking and molding the rubber composition obtained by the method for production.
摘要:
According to one embodiment, the resource access unit accesses a first resource including a replication target object and policy data assigned to the object. The policy data includes base policy data including a first condition and assertion policy data including a second condition. The first retrieval unit obtains first attribute data for accessing the first resource. The first policy evaluation unit determines whether the first attribute satisfies the first condition. When the first condition is satisfied, the copy processing unit executes the copy processing for copying the object. The second retrieval unit obtains the second attribute data for accessing the second resource. The second policy evaluation unit determines whether the second attribute data satisfies the second condition. When the second condition is satisfied, the paste processing unit executes paste processing for pasting the object to the second resource.
摘要:
In a file-access control system according to an embodiment of this invention, control data in accordance with actions made is imparted, as an obligation-type policy, to a document file. Next, a policy evaluation control unit evaluates and executes the obligation-type policy imparted to the document file in accordance with the action to the document file. The execution of the obligation-type policy includes the controlling of a document application on the basis of an obligation fulfillment action. Therefore, an active control can be performed in accordance with any manipulation made to the document, and the access to the document can be changed.
摘要:
A camera system includes a camera body, an interchangeable lens, and an accessory to be mounted between the camera body and the interchangeable lens, wherein the accessory includes a signal processing unit configured to process a signal input into the accessory, a storage unit configured to store information used for performing the signal processing, and a blocking unit configured to prevent direct communication from the camera body to the interchangeable lens when the information stored in the storage unit is rewritten via the camera body.