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Functionalized diene elastomer, and rubber composition containing same

A diene elastomer, elastomer matrix technology, applied in transportation and packaging, spoked wheels, special tires, etc., can solve problems such as unfavorable cold flow

Active Publication Date: 2014-12-24
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, during the transport and storage of the elastomer, the cold flow can be very detrimental

Method used

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  • Functionalized diene elastomer, and rubber composition containing same
  • Functionalized diene elastomer, and rubber composition containing same
  • Functionalized diene elastomer, and rubber composition containing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0159] Example 1 (Tg=-25°C)

[0160] Elastomers SBR C, SBR D, SBR E, and SBR F were used to prepare tread-type rubber compositions C, D, E, and F, each containing silica as a reinforcing filler.

[0161] Each of these compositions C, D, E and F exhibited the following formulation (expressed in phr: parts per hundred parts elastomer):

[0162] BR(1) 23 SBR 77 Silica (2) 85 carbon black (3) 4 Plasticizer(4) 12 Plasticizer(5) 18 Silane(6) 6.8 stearic acid 2 DPG(7) 1.6 Anti-ozone Wax 1.5 ZnO 1.5 6PPD(8) 1.9 sulfur 1.2 Accelerator 1.9

[0163] (1) = 4.3% 1,2 units, 2.7% trans-1,4-units, 93% cis-1,4-units (T g =-106°C) BR

[0164] (2) = "Zeosil 1165MP" silica from Rhodia

[0165] (3)=N234

[0166] (4) = MES oil ("Catenex SNR" from Shell)

[0167](5) = Polylimonene resin ("Dercolyte L120" from DRT)

[0168] (6) = TESPT coupling reagent ("Si69" from Degussa) ...

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Abstract

The present invention relates to a specific functionalized diene elastomer. This functionalized elastomer exhibits a reduced cold flow without, however, damaging the properties of a reinforced rubber composition in which it is present, in particular the processing properties and the hysteresis properties. This functionalized diene elastomer carries, at the chain end, a silanol functional group or a polysiloxane block having a silanol end and is partially coupled by or star-branched by tin.

Description

technical field [0001] The present invention relates to specific functionalized diene elastomers. The functionalized elastomer exhibits reduced cold flow without impairing, however, the properties of the reinforced rubber composition in which the functionalized elastomer is present, in particular the reinforced rubber composition hysteresis properties. Background technique [0002] Since the need to save fuel and protect the environment has become a priority issue, there is a need to prepare polymers with excellent mechanical properties and as low hysteresis as possible so that the polymers can be used in the form of rubber compositions that can be used in Manufacture of various semi-finished products that are incorporated into the composition of tire casings, such as innerliners, bonding rubber between different types of rubber, coated rubber for metal or textile reinforcing elements, sidewall rubber or tread, and Tires with improved properties are obtained, in particular...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08C19/25C08C19/44C08L19/00B60B1/00
CPCC08C19/25C08L19/006B60C1/0016C08C19/44C08L15/00C08L2666/08
Inventor J-M·马雷夏尔S·德兰特希尔J-M·法夫罗
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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