Polymer composition comprising a branched thermoplastic elastomer and a thermoplastic styrene polymer
AssigneeCompagnie Generale Des Etablissements Michelin
InventorBenjamin Gornard
Life of this patent
Estimating the term…
Abstract
A polymer composition comprises (a) 50 to 100 phr of one or more branched thermoplastic elastomers each comprising an unsaturated elastomer block and at least three thermoplastic styrene blocks, the thermoplastic styrene blocks of each branched thermoplastic elastomer representing from 15% to 75%, preferably from 15% to 50%, by weight of the weight of each branched thermoplastic elastomer, and (b) 10 to 100 phr of one or more thermoplastic styrene polymers having a molecular mass of between 25,000 and 300,000 g/mol, preferably between 50,000 and 200,000 g/mol.
Claims19
A tire comprising at least one layer containing a polymer composition comprising:
- (a) 50 to 100 phr of one or more branched thermoplastic elastomers, each comprising an unsaturated elastomer block and at least three thermoplastic styrene blocks, the thermoplastic styrene blocks of each branched thermoplastic elastomer representing from 15% to 75% by weight of the weight of each branched thermoplastic elastomer;
- and
- (b) 10 to 100 phr of one or more thermoplastic styrene polymers having a weight-average molecular mass (Mw) of between 25,000 and 300,000 g/mol.
Dependencies are inferred from the claim text.