The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 21, 2010
Filed:
Nov. 06, 2003
Brigitte Chauvin, Chamalieres, FR;
Brigitte Chauvin, Chamalieres, FR;
Michelin-Recherche et Technique S.A., Granges-Paccot, CH;
Abstract
A composition having a reduced hysteresis which is usable in a crown reinforcement for a heavy-vehicle tire, includes an elastomeric matrix comprising natural rubber or a synthetic polyisoprene in a majority proportion, and a reinforcing filler comprising a carbon black, where the carbon black fulfills the following conditions: (i) 45≦CTAB specific surface area in m/g≦70, (ii) 45≦BET specific surface area in m/g≦70, (iii) 45≦iodine adsorption index IA in mg/g≦70, (iv) ratio (BET surface area/index IA)≦1.07, (v) 115≦DBP structure value in ml/100 g≦170, (vi) 85 nm≦Stokes diameter dst in nm≦145, where dst is the diameter of aggregates corresponding to the maximum frequency of the Stokes diameters in a distribution of aggregates, and (vii) D50/dst≦0.0090·CTAB+0.19, where D50 is the difference, in the distribution of aggregates, between the Stokes diameters of two aggregates corresponding to one and the same frequency equal to 50% of the maximum frequency of the Stokes diameters, dst and D50 being measured by centrifugal photosedimentometry.