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Elastomeric copolymers based on [bis(trihydrocarbylsilyl)aminosilyl]-functionalized styrene and their use in the preparation of rubbers

A technology of styrene derivatives and copolymers, used in the production of elastomeric copolymers and elastic copolymers, the preparation of rubber, rubber, and tires

Inactive Publication Date: 2018-03-27
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The N-modification method described above only allows the preparation of polydienes in which the polymer chain contains not more than 2 amine-functional groups

Method used

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  • Elastomeric copolymers based on [bis(trihydrocarbylsilyl)aminosilyl]-functionalized styrene and their use in the preparation of rubbers
  • Elastomeric copolymers based on [bis(trihydrocarbylsilyl)aminosilyl]-functionalized styrene and their use in the preparation of rubbers
  • Elastomeric copolymers based on [bis(trihydrocarbylsilyl)aminosilyl]-functionalized styrene and their use in the preparation of rubbers

Examples

Experimental program
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preparation example Construction

[0124] The preparation of the polymer system of the present invention generally and preferably comprises the following steps:

[0125] Step 1 - Polymer Synthesis

[0126] The polymers are prepared by forming a solution of one or more anionic polymerizable monomers in a solvent and initiating polymerization of these monomers with an alkyllithium initiator.

[0127] The copolymer preferably comprises:

[0128] 99.8 to 30% by weight of units derived from dienes,

[0129] 0 to 60% by weight of units derived from monovinylaromatic hydrocarbons, and

[0130] 0.5 to 2% by weight of units derived from the styrene derivatives of the invention.

[0131] The copolymers described according to the invention generally have a 1,2-microstructure content in the range from 5% to 100%, preferably from 10% to 90%, most preferably from 20% to 80%, based on the diene content.

[0132] In order to obtain a random structure of the copolymer and / or increase the vinyl structure content, especiall...

Embodiment 1

[0151] Embodiment 1 (reference example)

[0152] Cyclohexane (820 g) was added to the inerted 2 liter reactor followed by styrene (31 g) and 1,3-butadiene (117 g). Removal of inhibitors from styrene and 1,3-butadiene. Subsequently, tetramethylethylenediamine (TMEDA, 2.21 mmol) was added to provide random incorporation of styrene monomer and to increase the vinyl content of the butadiene units. The solution in the reactor was heated to 60°C with continuous stirring throughout the process. When the desired temperature was reached, n-butyllithium (0.045 mmol) was added to perform quenching of residual impurities. Then, n-butyllithium (0.845 mmol) was added to initiate the polymerization process. The reaction was carried out for 60 minutes as an isothermal process. After this time, silicon tetrachloride (5.25×10 -5 mol) was added to the polymer solution as a coupling agent. Perform coupling for 5 min. The reaction solution was quenched with isopropanol (1 mmol) purged wit...

Embodiment 2

[0154] Cyclohexane (820 g) was added to an inertized 2 liter reactor followed by styrene (31 g), 1-[{N,N-bis(trimethylsilylamine)}(dimethylsilane yl)]-2-{(4-vinylphenyl)dimethylsilyl}ethane (3.4 g) and 1,3-butadiene (117 g). Removal of inhibitors from styrene and 1,3-butadiene. Subsequently, tetramethylethylenediamine (TMEDA, 2.21 m moles) was added to provide random incorporation of styrene monomer and to increase the vinyl content of the butadiene units. The solution inside the reactor was heated to 60°C and stirred continuously throughout the process. When the desired temperature was reached, n-butyllithium (0.045 mmol) was added to perform quenching of residual impurities. Then, n-butyllithium (0.84 mmol) was added to initiate the polymerization process. The reaction was performed as an isothermal process for 60 minutes. After this time, silicon tetrachloride (6.30×10 -5 mol) was added to the polymer solution as a coupling agent. Perform coupling for 5 min. The reac...

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Abstract

The present invention relates to the use of specific styrene derivatives in the production of an elastomeric copolymer. The invention further relates to a method for producing an elastomeric copolymerand an elastic copolymer. Moreover, the invention relates to a method for preparing a rubber comprising vulcanizing the elastomeric copolymer, and a rubber as obtainable according to the method. Further, the invention relates to a rubber composition, a tire component comprising the rubber composition, and a tire comprising the tire component.

Description

technical field [0001] The present invention relates to the use of specific styrene derivatives in the production of elastomeric copolymers. The invention also relates to a method for producing elastomeric copolymers and elastomeric copolymers. Furthermore, the invention relates to a process for the production of rubber comprising vulcanization of an elastomeric copolymer, and to the rubber obtainable according to this process. Furthermore, the present invention relates to a rubber composition, a tire component comprising the rubber composition, and a tire comprising the tire component. Background technique [0002] It is important that elastomeric copolymers used in tires, hoses, power transmission belts and other industrial products have good compatibility with fillers such as carbon black and silica. Such elastomeric copolymers can be functionalized with various compounds, such as amines, in order to obtain improved interaction with fillers. It has also been recognized...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F236/10C08F212/14C08F212/08C08L9/06C08L9/00C08K3/04B60C1/00
CPCB60C1/0016C08F212/14C08F236/10C08L9/06C08F212/08C08L9/00C08K3/04C08F212/26C08F236/06C08K3/16C08K3/36C08K5/54C08K9/06C01G19/08C07F7/10C08F12/26C08K3/011
Inventor 巴特洛姆·杰诺沃斯基雅罗斯瓦夫·罗戈扎拉多斯劳·科扎克帕韦尔·韦德芭芭拉·罗巴克
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