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A kind of functionalized diene polymer and its preparation method and application

A diene polymer, functionalized technology, applied in the direction of rolling resistance optimization, road transportation emission reduction, etc., can solve problems such as the inability to effectively improve the wet skid resistance and rolling resistance of rubber

Active Publication Date: 2017-08-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defect that the existing method cannot effectively improve the relationship between the wet skid resistance and rolling resistance of rubber, and provide a functionalized rubber that can have both high wet skid resistance and low rolling resistance. Diene polymer, preparation method of functionalized diene polymer, functionalized diene polymer prepared by said method, and application of said functionalized diene polymer in rubber

Method used

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  • A kind of functionalized diene polymer and its preparation method and application
  • A kind of functionalized diene polymer and its preparation method and application
  • A kind of functionalized diene polymer and its preparation method and application

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preparation example Construction

[0032] The preparation method of the functionalized diene polymer provided by the present invention comprises contacting the diene polymer containing at least one conjugated diene structural unit with a silane coupling agent in an inert atmosphere and in the presence of an initiator, so that The conditions of the above contact make the silane coupling agent chemically bonded to the diene polymer; the number average molecular weight of the diene polymer is 50,000-1 million, and the conjugated two Based on the weight of the olefin structural unit, the content of the conjugated diene structural unit with double bonds in the side chain in the diene polymer is 15-85% by weight, preferably 30-60% by weight, and the silane coupling agent It has the structure shown in formula (II):

[0033]

[0034] Among them, R 1 -R 4 for C 1 -C 20 straight-chain or branched-chain hydrocarbon groups or C containing heteroatoms 1 -C 20 A linear or branched hydrocarbon group, the heteroatom i...

Embodiment 1

[0065] This example is used to illustrate the functionalized diene polymer provided by the present invention and its preparation method.

[0066] (1) In a 5-liter stainless steel stirred tank, under the protection of high-purity nitrogen, add 2288g cyclohexane, 180.00g butadiene and 1.0g tetrahydrofurfuryl alcohol ethyl ether, then add 1.2mmol of n-butyl after heating to 50°C Lithium and control the pressure at 0.2MPa to initiate a reaction for 2 hours to obtain a solution containing a diene polymer. The number average molecular weight of the diene polymer is 160,000, based on the weight of the butadiene structural unit in the diene polymer, the side chain of the diene polymer contains a conjugated diene with double bonds The content of the structural unit was 55.40% by weight.

[0067] (2) Add 0.8ml (0.836g) of γ-mercaptopropyltrimethoxysilane to the product obtained in step (1), and immediately take a sample for mercapto test, then add 6.7mg of azobisisobutyl after heating ...

Embodiment 2

[0069] This example is used to illustrate the functionalized diene polymer provided by the present invention and its preparation method.

[0070] (1) In a 5-liter stainless steel stirred tank, under the protection of high-purity nitrogen, add 2288g cyclohexane, 200.00g butadiene and 0.65g tetrahydrofurfuryl alcohol ethyl ether, then add 1.0mmol of n-butyl after heating to 40°C Lithium and the pressure was controlled at 0.1 MPa to initiate a reaction for 2 hours to obtain a solution containing a diene polymer. The number-average molecular weight of the diene polymer is 166,000, based on the weight of the butadiene structural unit in the diene polymer, and the side chain of the diene polymer contains a conjugated diene with a double bond The content of the structural unit was 39.90% by weight.

[0071] (2) Add 0.6ml (0.627g) of γ-mercaptopropyltrimethoxysilane to the product obtained in step (1), and immediately take a sample for mercapto group test, then add 13mg of azobisisob...

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Abstract

The invention provides a functionalized dialkene polymer as well as a preparation method and an application thereof. The molecular chain of the functionalized dialkene polymer contains at least one conjugated dialkene structural unit, and also a silane coupling agent structural unit expressed by a formula (I) as shown in the specification, and the number-average molecular weight of the functionalized dialkene polymer is 50 thousand and one million; and in the formula (I), each of R1 to R4 is a C1-C20 linear-chain or branched-chain hydroxyl or a heteroatomic C1-C20 linear-chain or branched-chain hydroxyl, and the heteroatom is one or more of halogens, oxygen, sulfur, silicon and phosphorus. The functionalized dialkene polymer is capable of effectively improving the relation between wet-skid resistance and rolling resistance, and also eliminating unpleasant smell caused by the use of the silane coupling agent in the rubber mixing process.

Description

technical field [0001] The invention relates to a functionalized diene polymer, a preparation method of the functionalized diene polymer, the functionalized diene polymer prepared by the method, and the application of the functionalized diene polymer as a rubber base glue. Background technique [0002] In recent years, with the development of the automobile industry and rising oil prices, people have paid more and more attention to the safety and energy saving of automobiles, which requires tires to have high anti-wet skid performance and low rolling resistance. resistance. However, it is often difficult to achieve a balance between improving wet skid resistance and reducing rolling resistance. Therefore, according to different application requirements, it is necessary to seek the best balance between high wet skid resistance and low rolling resistance. [0003] For the production of low rolling resistance tires, because anionic solution polymerization can effectively adju...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F136/06C08F136/08C08F8/42C08F2/06C08L15/00
CPCY02T10/86
Inventor 梁爱民徐林王妮妮曲亮靓康新贺姜科李传清解希铭刘辉孙文娟
Owner CHINA PETROLEUM & CHEM CORP
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