Michelin Recherche Et Technique S.a.

Compagnie Generale Des Etablissements Michelin

Compagnie Generale Des Establissements Michelin

Vincent Pelissier

Bozena Voge

Jose Merino Lopez

José Merino Lopez

Arnaud Lapra

Bruno Dussardier

Pierre Annet

Floriandre Voisin

Jean-Marc Loubaresse

Gérald Huguenot

Julien Loyau

Elastomer composition having a self-sealing property which can be used in particular as puncture-resistant layer in an inflatable article, based on at least (phr meaning parts by weight per 100 parts of solid elastomer): a blend of at least two solid elastomers, a polybutadiene or butadiene copolymer elastomer, referred to as 'elastomer A', and a natural rubber or synthetic polyisoprene elastomer, referred to as 'elastomer B', the elastomer A: elastomer B ratio by weight being within a range from 10:90 to 90:10; between 30 and 90 phr of a hydrocarbon resin; from 0 to less than 30 phr of filler. Inflatable article, such as a tire, provided with a puncture-resistant layer comprising this elastomer composition; the puncture-resistant layer is advantageously used in combination with an airtight layer, for example based on butyl rubber or TPS elastomer, in order to form, in the inflatable article, an airtight and puncture-resistant laminate.

Elastomer composition for a tire object having a self-sealing property

An elastomer composition having a self-sealing property includes: a blend of at least two solid elastomers, in which 'elastomer A' is a polybutadiene or butadiene copolymer elastomer, in which 'elastomer B' is a natural rubber or synthetic polyisoprene elastomer, and in which an elastomer A:elastomer B weight ratio is within a range from 10:90 to 90:10; between 30 and 90 phr of a hydrocarbon resin, with phr meaning parts by weight per 100 parts of solid elastomer; and from 0 to less than 120 phr of filler, which includes from 0 to less than 30 phr of reinforcing filler. The composition may be used to form a puncture-resistant layer in an inflatable article, such as a tire. The puncture-resistant layer may be used in combination with an airtight layer to form an airtight and puncture-resistant laminate for the inflatable article.

Self-sealing elastomer composition for a pneumatic object

Elastomer composition having a self-sealing property which can be used in particular as puncture-resistant layer in an inflatable article, based on at least (phr meaning parts by weight per 100 parts of solid elastomer): a blend of at least two solid elastomers, a polybutadiene or butadiene copolymer elastomer, referred to as 'elastomer A', and a natural rubber or synthetic polyisoprene elastomer, referred to as 'elastomer B', the elastomer A:elastomer B ratio by weight being within a range from 10:90 to 90:10; between 30 and 90 phr of a hydrocarbon resin; from 0 to less than 30 phr of filler. Inflatable article, such as a tire, provided with a puncture-resistant layer comprising a composition according to the invention; the puncture-resistant layer is advantageously used in combination with an airtight layer, for example based on butyl rubber or TPS elastomer, in order to form, in the inflatable article, an airtight and puncture-resistant laminate.

Process for the manufacture of a rubber composition comprising various constituents, such as base elastomers, reinforcing fillers, additives and a vulcanization system, during which the following stages are carried out:

Method for manufacturing a rubber composition

Process for the manufacture of an elastomer composition having a self-sealing property which is based on at least (phr meaning parts by weight per 100 parts of solid elastomer): a blend of at least two solid elastomers, a polybutadiene or butadiene copolymer elastomer, referred to as 'elastomer A', and a natural rubber or synthetic polyisoprene elastomer, referred to as 'elastomer B', the elastomer A:elastomer B ratio by weight being within a range from 10:90 to 90:10; between 30 and 90 phr of a hydrocarbon resin; from 0 to less than 30 phr of filler, in which, during a first stage or stage (a), a masterbatch comprising at least the elastomers A and B and between 30 and 90 phr of a hydrocarbon resin is prepared by mixing these various components in a mixer at a &#x201c;hot compounding&#x201d; temperature or up to a &#x201c;hot compounding&#x201d; temperature which is greater than the softening temperature of the hydrocarbon resin.

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Romagnat, France

Vincent Pelissier