Cyclopentene ring-opened copolymer

A kind of technology of cyclopentene and copolymer

Inactive Publication Date: 2018-04-17
ZEON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cross-linked rubber obtained by the technique of Patent Document 1 has insufficient breaking strength. Therefore, in order to meet the demand for higher performance of automobile tires in recent years, it is desired to further improve the breaking strength.

Method used

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  • Cyclopentene ring-opened copolymer
  • Cyclopentene ring-opened copolymer
  • Cyclopentene ring-opened copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0134] (Manufacture of cyclopentene ring-opening copolymer)

[0135] Under nitrogen environment, add 541 parts of cyclopentene, 163 parts of 1,4-endomethylene-1,4,4a,9a-tetrahydro-9H-fluorene (MTHF ), 2800 parts of toluene and 0.61 parts of 1-hexene, to which 0.074 parts of (1,3-dicycloimidazolidin-2-ylidene) (tricyclohexylphosphine)benzylidene ruthenium dichloride was dissolved Polymerization was carried out at 25°C for 4 hours in a polymerization catalyst solution in 30 parts of toluene. After 4 hours of polymerization, in the pressure-resistant glass reaction vessel, add excess isopropanol to terminate the polymerization, inject the solution in the pressure-resistant glass reaction vessel into a solution containing 2,6-di-tert-butyl p-cresol (BHT ) in a large excess of isopropanol. Next, the precipitated polymer was recovered, washed with isopropanol, and vacuum-dried at 40° C. for 3 days to obtain 320 parts of a cyclopentene / MTHF ring-opened copolymer. For the cyclopent...

Embodiment 2

[0139] The amount of cyclopentene was changed to 193 parts, the amount of 1,4-methano-1,4,4a,9a-tetrahydro-9H-fluorene (MTHF) was changed to 85 parts, and the amount of toluene The usage amount was changed to 1100 parts, the usage amount of (1,3-dicycloimidazolidin-2-ylidene)(tricyclohexylphosphine)benzylidene ruthenium dichloride was changed to 0.028 parts, and 0.61 parts were replaced 1-hexene and 0.47 parts of allyltriethoxysilane were used, and the polymerization reaction was carried out in the same manner as in Example 1 to obtain 178 parts of polymer chains with triethoxysilane at the end of one side. End-modified cyclopentene / MTHF ring-opening copolymer. Various measurements were performed in the same manner as in Example 1 for the obtained terminal-modified cyclopentene / MTHF ring-opened copolymer. The results are shown in Table 1. In addition, the introduction rate of the oxysilyl group in the terminal-modified cyclopentene / MTHF ring-opening copolymer was 45%.

[01...

Embodiment 3

[0142] The usage amount of cyclopentene is changed to 166 parts, the usage amount of toluene is changed to 1057 parts, (1,3-dicycloimidazolidine-2-ylidene) (tricyclohexylphosphine) benzylidene di The amount of ruthenium chloride used was changed to 0.028 parts, the amount of 1-hexene used was changed to 0.42 parts, and 163 parts of 1,4-endomethylene-1,4,4a,9a-tetrahydro-9H- Fluorene (MTHF) while using 162 parts of 70% by weight of dicyclopentadiene (DCPD) / cyclohexane solution, in addition to carrying out the polymerization reaction in the same manner as in Example 1, to obtain 177 parts of cyclopentene / DCPD ring-opening copolymers. Various measurements were performed in the same manner as in Example 1 for the obtained cyclopentene / DCPD ring-opened copolymer. The results are shown in Table 1.

[0143] Then, instead of 100 parts of the cyclopentene / MTHF ring-opening copolymer obtained in Example 1, 100 parts of the cyclopentene / DCPD ring-opening copolymer obtained were used, a...

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Abstract

Provided is a cyclopentene ring-opened copolymer comprising structural units derived from cyclopentene, and structural units derived from a norbornene compound having at least 3 rings, wherein the content ratio of structural units derived from the norbornene compound having at least 3 rings is 40-80wt.% with respect to all of the repeating structural units in the cyclopentene ring-opened copolymer.

Description

technical field [0001] The present invention relates to a cyclopentene ring-opened copolymer, and more specifically, to a cyclopentene ring-opened copolymer capable of providing a rubber cross-linked product excellent in breaking strength and abrasion resistance. In addition, the present invention also relates to a rubber composition obtained using such a cyclopentene ring-opened copolymer, a cross-linked rubber obtained using the rubber composition, and a tire. Background technique [0002] It is well known that, generally, an unsaturated linear ring-opened polymer is provided by metathesis ring-opening polymerization of cyclopentene in the presence of a Ziegler-Natta catalyst, the so-called Ziegler-Natta catalyst consisting of wCl 6 、MoCl 5 It is composed of transition metal compounds of Group 6 of the periodic table and organometallic activators such as triisobutylaluminum, diethylaluminum chloride, and tetrabutyltin. Since such a ring-opened polymer of cyclopentene ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/08B60C1/00C08K3/36C08L65/00
CPCB60C1/00C08G61/08C08K3/36C08L65/00C08G2261/3321C08G2261/3325C08G2261/418C08G2261/62C08G2261/76C08G2261/60C08G61/06
Inventor 似鸟广幸奥野晋吾仓本直明杉村岳史
Owner ZEON CORP
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