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A kind of monovinylarene-conjugated diene copolymer composition and its preparation method and application

A technology of monovinyl aromatic hydrocarbons and conjugated dienes, which is applied in transportation and packaging, tire parts, rolling resistance optimization, etc., can solve the problems of wet skid resistance and rolling resistance, and achieve excellent mechanical properties and molecular weight Effect of wide distribution and low rolling resistance

Active Publication Date: 2017-04-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Studies have shown that the wet skid resistance and rolling resistance of the copolymer are not ideal and need to be further improved

Method used

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  • A kind of monovinylarene-conjugated diene copolymer composition and its preparation method and application
  • A kind of monovinylarene-conjugated diene copolymer composition and its preparation method and application

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Experimental program
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preparation example Construction

[0031] The preparation method of the monovinylarene-conjugated diene copolymer composition provided by the invention comprises the following steps:

[0032] (1) In the presence of an organic monolithium initiator and a polarity regulator, the monovinylarene and partially conjugated diene are subjected to a first polymerization reaction in a solvent, so that the monovinylarene and conjugated diene The total conversion rate is 70-95%, and the obtained first polymerization reaction product and the remaining part of the conjugated diene are subjected to a second polymerization reaction to obtain a second polymerization reaction product;

[0033] (2) Under the conditions of the coupling reaction, the second polymerization reaction product is contacted with at least two coupling agents, the type of the coupling agent and the conditions of the coupling reaction make the obtained monovinylarene-conjugated The diene copolymer composition contains: [(SB) 1 -(SB) 2 ] m m 1 , [(SB) 1...

preparation example 1

[0063] This preparation example is used to illustrate the monovinylarene-conjugated diene copolymer composition and its preparation method provided by the present invention.

[0064] Under nitrogen atmosphere, in 5 liters of stainless steel stirred tanks, add the tetrahydrofurfuryl alcohol ether of 2400g, 0.92mmol, sodium dodecylbenzenesulfonate, 114g styrene and 170g butadiene of 0.12mmol, and in Add 3.1 mmol of n-butyllithium initiator at a temperature of 50°C and a pressure of 0.1 MPa, and polymerize until the total monomer conversion rate reaches 90%. Then add 42g of butadiene, and polymerize at a temperature of 65-80°C and a pressure of 0.1MPa until the monomer is completely converted, then add 0.33mmol of silicon tetrachloride and 0.088mmol of dimethyl silicon dichloride, and Carry out the coupling reaction at a temperature of 60-70°C and a pressure of 0.1MPa for 20 minutes, then add 0.5g of deionized water to react for 10 minutes, and then add antiaging agent 1076 and a...

preparation example 2

[0066] This preparation example is used to illustrate the monovinylarene-conjugated diene copolymer composition and its preparation method provided by the present invention.

[0067] Under nitrogen atmosphere, in 5 liters of stainless steel stirred tanks, add the tetrahydrofurfuryl alcohol ether of 2400g, 0.92mmol, sodium dodecylbenzenesulfonate, 114g styrene and 170g butadiene of 0.12mmol, and in Add 3.1 mmol of n-butyllithium initiator at a temperature of 40°C and a pressure of 0.15 MPa, and polymerize until the total monomer conversion reaches 90%. Then add 42g of butadiene, and polymerize at a temperature of 60-75°C and a pressure of 0.15MPa until the monomer is completely reacted, then add 0.13mmol of silicon tetrachloride and 0.33mmol of dimethyldichlorosilane, and The temperature is 60-70°C and the pressure is 0.15MPa for coupling reaction for 20 minutes, then add 0.5g of deionized water to react for 10 minutes, and then add anti-aging agent 1076 and anti-aging agent 15...

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Abstract

The invention provides monovinyl arene-conjugated diene copolymer composition as well as a preparation method and an application thereof. The monovinyl arene-conjugated diene copolymer composition comprises [(SB)1-(SB)2]mM1, [(SB)1-(SB)2]nM2 and (SB)1-(SB)2, wherein S represents a monovinyl arene structure unit, B represents a conjugated diene structure unit, SB represents a copolymerization chain segment of monovinyl arene and conjugated diene, the content of the monovinyl arene structure unit in the (SB)1 chain segment is different from that of the monovinyl arene structure unit in the (SB)2 chain segment, M1 and M2 are different coupling agent residues, m represents 3 or 4, n represents 2 or 3, and m and n are different. Rubber containing the monovinyl arene-conjugated diene copolymer composition not only has low rolling resistance and high wet-skid resistance properties, has excellent mechanical property and simultaneously has a satisfactory processing property.

Description

technical field [0001] The present invention relates to a monovinylarene-conjugated diene copolymer composition, a preparation method of a monovinylarene-conjugated diene copolymer composition, and a monovinylarene-conjugated diene copolymer prepared by the above method. The conjugated diene copolymer composition and the application of the monovinylarene-conjugated diene copolymer composition in preparing tires. Background technique [0002] In recent years, with the improvement of people's awareness of energy saving and the concern for the safety performance of tires, the requirements for tires are getting higher and higher, especially for cars with better wet skid resistance and lower rolling resistance. The wet skid resistance and rolling resistance of rubber can usually be characterized by the tan δ values ​​at 0°C and 60°C. An ideal polymer has a higher tanδ value at 0°C, so it has better wet skid resistance; and a lower tanδ value at 60°C, so it has lower rolling resi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F236/10C08F4/48C08F8/42C08C19/44C08L9/06B60C1/00
CPCY02T10/86
Inventor 齐玉霞解希铭杜昕段海东姜科刘冬梅张宇婷苗玉红
Owner CHINA PETROLEUM & CHEM CORP