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

A technology of conjugated diene and manufacturing method, which is applied in the direction of rolling resistance optimization, road transportation emission reduction, etc.

Inactive Publication Date: 2010-03-03
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned conventional polymer compositions using conjugated diene-based polymers do not necessarily satisfy the requirements in terms of fuel economy.

Method used

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

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Experimental program
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Embodiment 1

[0324] Washing and drying In the stainless steel polymerization reactor with an internal volume of 20 liters, replace with dry nitrogen, and drop hexane (specific gravity 0.68g / cm2) into the polymerization reaction vessel 3 ) 10.2kg, 1,3-butadiene 547g, styrene 173g, tetrahydrofuran 6.1ml, ethylene glycol diethyl ether 5.0ml. Next, 16.0 mmol of bis(diethylamino)methylvinylsilane and 18.5 mmol of n-butyllithium were added as a cyclohexane solution and a n-hexane solution, respectively, to start polymerization.

[0325] The stirring speed was set at 130 rpm, the temperature in the polymerization reactor was set at 65° C., and the copolymerization of 1,3-butadiene and styrene was carried out for 3 hours while continuously supplying monomers into the polymerization reactor. The supplied amount of 1,3-butadiene under total polymerization was 821 g, and the supplied amount of styrene was 259 g.

[0326] Next, the obtained polymer solution was stirred at a stirring rate of 130 rpm, ...

Embodiment 2

[0330] Washing and drying In the stainless steel polymerization reactor with an internal volume of 20 liters, replace with dry nitrogen, and hexane (specific gravity 0.68g / cm 3 ) 10.2kg, 547g of 1,3-butadiene, 173g of styrene, 6.1ml of tetrahydrofuran, and 5.0ml of ethylene glycol diethyl ether were put into the polymerization reaction container. Next, 17.3 mmol of n-butyllithium was charged into the n-hexane solution, and copolymerization of 1,3-butadiene and styrene was performed for 1 time. During the polymerization, the stirring speed was set to 130 rpm, and the temperature in the polymerization reactor was set to 65° C., and the mixture was continuously supplied into the polymerization reaction vessel.

[0331] After this 1-hour polymerization, 14.4 mmol of bis(diethylamino)methylvinylsilane was used as a cyclohexane solution, and under the condition that the stirring speed was 130 rpm and the temperature in the polymerization reactor was 65° C. input into the device.

...

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Abstract

The invention provides a conjugated diene polymer that comprises a conjugated diene-based constituent unit and a constituent unit of formula (I) below, at least one terminus of the polymer being modified by a silicon compound having a linkage of formula (II) below and / or a linkage of formula (III) below. The invention provides a conjugated diene composition, containing conjugated diene polymer andstuffing. The invention also provides a manufacturing method of conjugated diene polymer, which includes the following process A and process B. The process A is a process for using alkali metal catalyst in the hydrocarbon solvent to polymerize the conjugated diene and the monomer of the vinyl compound of the formula (V), to obtain a polymer having alkali metal come from the catalyst on at least one terminus of the polymer chain containing the conjugated diene-based monomeric unit and the monomeric unit based on the vinyl compound of the formula (V). The process B is a process for reacting thepolymer obtained from theprocess A and the silicon compound having a linkage of formula (II) below and / or a linkage of formula (III) below.

Description

technical field [0001] The present invention relates to a conjugated diene polymer, a conjugated diene polymer composition and a method for producing the conjugated diene polymer. Background technique [0002] In recent years, people's attention to environmental problems has been increasing, so the demand for fuel economy of automobiles has also been increased, and even polymer compositions used in automobile tires are required to be excellent in fuel economy. As a polymer composition for automobile tires, a polymer composition containing a conjugated diene polymer such as polybutadiene or a butadiene-styrene copolymer and a filler such as carbon black or silica is used. [0003] For example, as a conjugated diene polymer, there is known a polymerization method in which butadiene and styrene are copolymerized with bis(dimethylamino)methylvinylsilane using alkyllithium as a polymerization initiator. A polymer composition obtained by modifying a single end of a compound (for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F236/04C08F8/42C08L47/00C08F236/10
CPCY02T10/862C08L15/00C08L19/006C08C19/44
Inventor 大岛真弓
Owner SUMITOMO CHEM CO LTD
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