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Elastomer composition which is reinforced with a functionalised polyvinylaromatic filler

A vinyl aromatic, diene elastomer technology, applied in the reinforcement layer of pneumatic tires, nanotechnology for materials and surface science, transportation and packaging, etc., can solve the problems of increasing the weight of rubber particles, high density, etc.

Inactive Publication Date: 2008-02-27
OCIETE DE TECH MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, compared to the use of carbon black, these inorganic reinforcing fillers have the known disadvantage of increasing the weight of the composition and of the rubber particles derived from it due to their slightly higher density relative to equivalent reinforcing power

Method used

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  • Elastomer composition which is reinforced with a functionalised polyvinylaromatic filler
  • Elastomer composition which is reinforced with a functionalised polyvinylaromatic filler
  • Elastomer composition which is reinforced with a functionalised polyvinylaromatic filler

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Embodiment approach

[0080] According to a preferred embodiment of the present invention, Z satisfies one of the following formulas:

[0081]

[0082] in:

[0083] - Substituted or unsubstituted, same or different radicals R 1 selected from the following groups: C 1 -C 8 Alkyl, C 5 -C 8 Cycloalkyl and C 6 -C 12 aryl; and

[0084] - Substituted or unsubstituted, same or different radicals R 2 selected from the following group: hydroxyl, C 1 -C 8 Alkoxy and C 5 -C 8 Cycloalkoxy.

[0085] More preferably, in these formulae:

[0086] -base R 1 selected from the following groups: C 1 -C 4 Alkyl, cyclohexyl and phenyl, especially C 1 -C 4 Alkyl, more particularly methyl and ethyl; and

[0087] -base R 2 selected from the group consisting of: hydroxyl and C 1 -C 6 Alkoxy, especially hydroxyl and C 1 -C 4 Alkoxy is more particularly selected from hydroxy, methoxy and ethoxy.

[0088] Even more preferably, the group R 1 One is selected from methyl and ethyl, the base R 2 selec...

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Abstract

Rubber composition based on at least one diene elastomer, a polymeric filler as reinforcing filler and a coupling agent for bonding between the polymeric filler and the elastomer. The polymeric filler includes nanoparticles of a polyvinylaromatic (PVAr) carrying a functional group denoted by Z of formula a ≡Si—X, X representing a hydroxyl or hydrolyzable group. The PVAr is especially a copolymer of styrene, ethylvinylbenzene, divinylbenzene and trimethoxysilylpropylacrylate or trimethoxysilylpropylmethacrylate, being in the form of nanobeads, the diameter of which is between 10 and 100 nm. Also described is a method of obtaining such a composition, and use of such a rubber composition for the manufacture of rubber articles, in particular tires or rubber semi-finished products intended for these tires, as well as a masterbatch including at least one diene elastomer and such a polymeric filler, and a method of obtaining such a masterbatch.

Description

technical field [0001] The present invention relates to diene elastomer compositions intended in particular for tires or semi-finished products for tires, for example for the manufacture of treads for these tires. [0002] The invention also relates to reinforcing fillers capable of reinforcing such rubber compositions, more particularly to reinforcing fillers of organic or polymeric type, and also to their use in reinforcing such rubber compositions. Background technique [0003] In order to reduce fuel consumption and pollution of motor vehicle emissions, tire designers have expended considerable effort to obtain tires with very low rolling resistance, improved grip on dry, wet or snow-covered ground and good wear resistance. Through the development of new types of fillers, also known as "non-black fillers", which are inorganic but reliably reinforcing, most notably HDS (highly dispersible silica) fillers, it has been demonstrated that these In replacing traditional carbo...

Claims

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Application Information

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IPC IPC(8): C08L21/00C08L25/00B60C1/00
CPCC08L25/16C08L21/00C08L9/00C08L25/04Y10S526/909B60C9/08C08L2666/06C08L2666/08C08L25/08C08J3/22B60C1/00B82Y30/00
Inventor A·拉普拉S·甘顿-佩因F·瓦拉格尼亚特
Owner OCIETE DE TECH MICHELIN
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