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Functianalised polyvinylaromatic nanoparticles

A vinyl aromatic, nano-particle technology, applied in the field of reinforcing fillers, can solve the problem of increasing the weight of the polymer matrix

Inactive Publication Date: 2008-02-27
OCIETE DE TECH MICHELIN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, compared to the use of carbon black, these inorganic reinforcing fillers have the known disadvantage of increasing the weight of the polymer matrix they reinforce due to their slightly higher density relative to equivalent reinforcing power

Method used

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  • Functianalised polyvinylaromatic nanoparticles
  • Functianalised polyvinylaromatic nanoparticles
  • Functianalised polyvinylaromatic nanoparticles

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Experimental program
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Embodiment approach

[0053] According to a preferred embodiment of the present invention, Z satisfies one of the following formulas:

[0054]

[0055] in:

[0056] - 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

[0057] - 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.

[0058] More preferably, in these formulae:

[0059] -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

[0060] -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.

[0061] Even more preferably, the group R 1 One is selected from methyl and ethyl, the base R 2 selec...

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Abstract

The invention relates to nanoparticles of functionalised, cross-linked polyvinylaromatic (PVAr), which can be used as a reinforcing filler in a polymer composition, said PVAr comprising a copolymer with at least: one vinylaromatic comonomer A; a comonomer B bearing function Z having formula = Si - X, wherein X is a hydroxyl or hydrosable group; and a crosslinking comonomer C which is at least bifunctional and which can be polymerised by means of an addition reaction, whereby conomer C can be vinylaromatic and, in this case, identical or different to conomoer A or non-vinylaromatic. The PVAr comprises, for example, a copolymer of styrene, ethylvinylbenzene, divinylbenzene and (meth)acrylate of trimethoxysilylpropyl, in the form of nanoshells with a diameter of between 10 and 100 nm. The PVAr filler has a very low density and, as such, can be used to reduce the weight of polymer compositions, particularly elastomers, without degradation to the reinforcement and with a notable reduction in hysteresis.

Description

technical field [0001] The present invention relates to reinforcing fillers capable of reinforcing polymeric matrices, and more particularly to reinforcing fillers of the organic type, and to their use to reinforce such rubber compositions, especially elastomers involved in the manufacture of tires for motor vehicles matrix. Background technique [0002] In order to reduce fuel consumption and pollution from motor vehicle emissions, tire designers have spent a lot of effort to obtain tires with very low running resistance, improved grip and good wear resistance on dry, wet or snow-covered ground sex tires. Through the development of novel but reliably reinforcing inorganic fillers also known as "non-carbon black fillers", most notably HDS (highly disperse silica) fillers, it has been demonstrated that said fillers are capable of Instead of conventional carbon black for tires, an effective solution to this problem has been found over the past fifteen years. [0003] Howeve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/22C08L25/00C08F212/08
CPCC08K5/548C08J3/226B82Y30/00C08F212/14C08L21/00C08K5/01C08L25/00C08F212/08C08F212/22C08L2666/06C08F212/36B82B3/00
Inventor S·甘顿-佩因A·胡特A·拉普拉
Owner OCIETE DE TECH MICHELIN
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