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AssigneeCompagnie Generale Des Etablissements Michelin
InventorsFrancois Jean-Baptiste-Dit-Dominique, Nathalie Coste, Adeline Jasselin
Estimating the term…
A process for manufacturing a masterbatch comprises the following steps: (a) bringing at least one initial polymer comprising at least one carbon-carbon unsaturation into contact with at least one 1,3-dipolar grafting agent bearing at least one nitrile oxide dipole in the presence of at least one organophosphorus additive selected from the group consisting of phosphoric acid triesters, phosphonates, phosphinates, phosphine oxides and the mixtures of these compounds, and (b) recovering the masterbatch obtained in the preceding step. The masterbatch and compositions containing it and also tires comprising such compositions are also disclosed.
A process for manufacturing a masterbatch comprising the following steps:
A masterbatch based on at least one organophosphorus additive, on an initial polymer comprising at least one carbon-carbon unsaturation and at least one 1,3-dipolar grafting agent bearing at least one nitrile oxide dipole, the at least one organophosphorus additive being selected from the group consisting of phosphoric acid triesters, phosphonates, phosphinates, phosphine oxides and mixtures thereof, wherein the at least one organophosphorus additive is in a range of from 0.3 phr to 20 phr, wherein the masterbatch has a phosphorous content of greater than 600 ppm, wherein the initial polymer is a diene elastomer selected from the group consisting of natural rubber, synthetic polyisoprenes, polybutadienes, isoprene copolymers, and styrene/butadiene copolymers (SBR), and wherein the masterbatch consists of the initial polymer, the at least one 1,3-dipolar grafting agent, and the at least one organophosphorus additive.
Dependencies are inferred from the claim text.