Elastomeric composition reinforced with a funtionalized non-aromatic vinyl polymer filler
AssigneeMicheln Recherche et Technique S.A.
InventorsFranck Varagniat, Sylvie Gandon-Pain, Arnaud Lapra
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Abstract
Rubber composition based on at least one diene elastomer, a polymer filler as reinforcing filler, a coupling agent providing the bond between the polymer filler and the elastomer. The polymer filler comprises nanoparticles of non-aromatic vinnyl polymer (“NAVP”) bearing a function Z of formula ≡Si—X, X representing a hydroxyl or hydrolysable group. The NAVP is in particular a copolymer of methyl methacrylate, trimethoxysilylpropyl methacrylate and ethylene glycol dimethacrylate, in the form of nanobeads the diameter of which is between 10 and 100 nm.
Claims64
A rubber composition based on at least one diene elastomer, a polymer filler, a coupling agent providing the bond between the polymer filler and the at least one diene elastomer, wherein said polymer filler comprises nanoparticles of non-aromatic vinyl polymer bearing a function “Z” of formula ≡Si—X, X representing a hydroxyl or hydrolysable group.
A process for obtaining a rubber composition in which there are incorporated in at least one diene elastomer at least one polymer filler, a coupling agent providing the bond between the polymer filler and the at least one diene elastomer, and wherein the entire mix is kneaded thermomechanically, in one or more steps, until a maximum temperature of between 110° C. and 190° C. is reached, comprising incorporating said polymer filler such that it comprises nanoparticles of functionalised non-aromatic vinyl polymer ≡Si—X, X representing a hydroxyl or hydrolysable group.
A masterbatch based on at least one diene elastomer and a polymer filler, characterised in that said polymer filler comprises nanoparticles of non-aromatic vinyl polymer bearing a function “Z” of formula ≡Si—X, X representing a hydroxyl or hydrolysable group.
Dependencies are inferred from the claim text.