Abstract: The invention relates to inorganic particles which are covalently bonded to first polymer chains made up of at least one polymer carrying proton exchange groups, optionally in the form of salts, and bonded to second polymer chains made up of at least one fluorinated polymer that does not carry any proton exchange groups, the second chains being bonded to the particles via organic spacer groups, or the second chains being bonded to first chains via organic spacer groups, or some of the second chains being bonded to the particles via organic spacer groups while the remaining second chains are bonded to first chains via organic spacer groups.

Abstract: A method for preparing particles comprising a material suitable for catalysing oxygen reduction or hydrogen oxidation, the particles being grafted by grafts consisting of at least one specific polymer comprising at least one repeating styrene unit bearing at least one proton-conducting group.

Abstract: An aromatic polyphenol derivative which comprises at least one aromatic ring bearing at least two —O—Z groups in the meta position relative to one another, the two positions ortho to at least one of the —O—Z groups being unsubstituted, is used for the manufacture of a phenol-aldehyde resin for reinforcing a rubber composition. Each —O—Z group represents an —O—((C?O)(R1)) group with R1 representing a hydrocarbon-based radical or a substituted hydrocarbon-based radical.

Abstract: A rubber composition comprises at least one phenol-aldehyde resin based on: at least one aromatic polyphenol comprising at least one aromatic ring bearing at least two —O—H groups in the meta position relative to one another, the two positions ortho to at least one of the —O—H groups being unsubstituted; and at least one aldehyde of formula W: wherein each Ar1 and Ar2 group represents, independently of one another, an optionally substituted aromatic ring; and wherein SP is a connecting group that connects at least the Ar1 and Ar2 groups to one another, SP separating the Ar1 and Ar2 groups by at least 2 covalent bonds.

Abstract: The invention relates to inorganic particles which are covalently bonded to first polymer chains made up of at least one polymer carrying proton exchange groups, optionally in the form of salts, and bonded to second polymer chains made up of at least one fluorinated polymer that does not carry any proton exchange groups, the second chains being bonded to the particles via organic spacer groups, or the second chains being bonded to first chains via organic spacer groups, or some of the second chains being bonded to the particles via organic spacer groups while the remaining second chains are bonded to first chains via organic spacer groups.

Abstract: A method for preparing particles comprising a material suitable for catalysing oxygen reduction or hydrogen oxidation, the particles being grafted by grafts consisting of at least one specific polymer comprising at least one repeating styrene unit bearing at least one proton-conducting group.

Abstract: An aromatic polyphenol derivative which comprises at least one aromatic ring bearing at least two —O—Z groups in the meta position relative to one another, the two positions ortho to at least one of the —O—Z groups being unsubstituted, is used for the manufacture of a phenol-aldehyde resin for reinforcing a rubber composition. Each —O—Z group represents an —O—((C?O)(R1)) group with R1 representing a hydrocarbon-based radical or a substituted hydrocarbon-based radical.

Abstract: The rubber composition comprises at least one phenol-aldehyde resin based: on at least one aromatic polyphenol comprising at least one aromatic ring bearing at least two —O—H groups in the meta position relative to one another, the two positions ortho to at least one of the —O—H groups being unsubstituted; and on at least one aldehyde of formula W: in which: each Ar1 and Ar2 group represents, independently of one another, an optionally substituted aromatic ring; and SP is a connecting group that connects at least the Ar1 and Ar2 groups to one another, SP separating the Ar1 and Ar2 groups by at least 2 covalent bonds.