Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2005-12-30
2010-10-26
Zemel, Irina S (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S191000, C525S209000, C525S232000, C525S241000, C526S279000, C526S909000
Reexamination Certificate
active
07820771
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 between10and100nm. 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.
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Gandon-Pain Sylvie
Lapra Arnaud
Varagniat Franck
Buchanan Ingersoll & Rooney P.C.
Lenihan Jeffrey
Michelin Recherche et Technique S. A.
Zemel Irina S
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