Abstract: Monomers which contain a 4-thiazolidinone unit linked to a benzene nucleus and which contain a (meth)acrylate function are provided. A process for the synthesis of the monomers and the use thereof in the synthesis of polymers by the radical route is also provided.

Abstract: A process for depositing a metal-adhesive, hydrophobic and electrically conductive coating based on electrically conductive microparticles and on a polymer matrix P comprising at least one thermoplastic fluoropolymer P1 and a thermosetting resin P2, comprises: in a first container, dissolve the polymer P1 in an organic solvent; in a second container, disperse the electrically conductive microparticles in an organic solvent; add, in the first container, the thermosetting resin P2 in the liquid state; mix the contents of the containers, then deposit the mixture on the substrate; crosslink the resin P2 and remove the solvents, to obtain a first coating; then impregnate the surface of the substrate with an additional resin solution P2 dissolved in a third solvent, which is a solvent of the resin P2 and a non-solvent of the polymer P1; eliminate the third solvent and crosslink while compressing the additional resin P2 in order to obtain the targeted final coating.

Abstract: Multicomposite material (R1, R2) including at least one monofilament (10) made of glass-resin composite including glass filaments (101) embedded in a thermoset polyester resin (102), characterized in that said monofilament is coated with at least one layer (12) of benzoxazine; use of such a material as reinforcer in finished articles or semi-finished products made of rubber; finished articles or semi-finished products made of rubber, such as vehicle tyres, reinforced with such a material.

Abstract: A metallic or metallized reinforcer has at least a surface of which is at least partially metallic, the at least partially metallic surface being coated with a polybenzoxazine sulfide whose repeating units include at least one unit corresponding to formula (I) or (II): in which the two oxazine rings are connected together via a central aromatic group, the benzene ring of which bears one, two, three or four groups of formula —Sx—R in which “x” is an integer from 1 to 8 and R represents hydrogen or a hydrocarbon-based group including 1 to 10 carbon atoms and optionally a heteroatom chosen from O, S, N and P. Such a reinforcement can be used for the reinforcement of a rubber article, in particular a motor vehicle tire.

Abstract: A polybenzoxazine sulfide has repeating units including at least one unit corresponding to formula (I) or (II): in which the two oxazine rings are connected together via a central aromatic group, the benzene ring of which bears one, two, three or four groups of formula —Sx—R in which “x” is an integer from 1 to 8 and R represents hydrogen or a hydrocarbon-based group including 1 to 10 carbon atoms and optionally a heteroatom chosen from O, S, N and P. Such a polybenzoxazine can be used as an adhesive layer on metal, in particular for the adhesive bonding of a metallic substrate, in particular made of carbon steel, to rubber.

Abstract: A process for modifying an expandable curing bladder for a tire, which bladder has a surface intended to come into contact with a tire casing is provided. The process comprises a step of applying to the surface a layer of a silicone rubber composition comprising a first liquid organopolysiloxane bearing chain-end alkenyl groups, a second liquid organohydropolysiloxane and a photoactivatable hydrosilylation catalyst, and a step of exposing the silicone rubber composition covering the surface to irradiation with ultraviolet-visible light.

Abstract: The invention relates to a laminate comprising a first layer and a second layer directly covering the first layer, the first layer being a layer of a silicone rubber composition comprising a micrometric silicone powder and a mixture of crosslinkable organopolysiloxanes, the second layer being a layer of a silicone rubber composition comprising a hydrophobic silica and a mixture of crosslinkable organopolysiloxanes, the first layer and the second layer being crosslinked. The laminate, in particular when it is used as a coating for the outer surface of an expandable bladder for a tyre curing mould, makes it possible to eliminate moulding defects on the inner liner of the tyre.

Abstract: A silicone rubber composition is provided. The silicone rubber composition comprises a hydrophobic silica, polyamide microparticles, a liquid organopolysiloxane having two chain ends each bearing an alkenyl group, a liquid polyhydroalkylsiloxane having two chain ends each bearing an SiR?3O1/2 group, and a hydrosilylation catalyst. The ratio of the number of (R?HSiO2/2) units in the polyhydroalkylsiloxane to the number of alkenyl groups is greater than 5. Such a composition has good adhesive properties with respect to a crosslinked butyl rubber composition, good friction resistance properties and good flexibility properties.

Abstract: A metal or metallized reinforcer, at least the surface of which is at least partially metallic, comprises at least a metallic part coated with a polybenzoxazine, the repeat units of which comprise at least one unit corresponding to the formulae (I) or (II): in which Z1 and Z2, which are identical or different, represent an at least divalent, aliphatic, cycloaliphatic or aromatic bonding group comprising at least one carbon atom and optionally at least one heteroatom selected from O, S, N and P. Such a reinforcement can be used for the reinforcement of a rubber article, in particular a motor vehicle tire.

Abstract: Polybenzoxazine comprises repeat units which comprise at least one unit corresponding to the formulae (I) or (II): in which Z1 and Z2, which are identical or different, represent an at least divalent, aliphatic, cycloaliphatic or aromatic bonding group comprising at least one carbon atom and optionally at least one heteroatom selected from O, S, N and P. Such a polybenzoxazine may be used as a metal-adhesive layer, in particular for the adhesive bonding of a metal substrate, in particular made of carbon steel, to a rubber.

Abstract: At least a metallic part of a metal or metallized reinforcer, at least the surface of which is at least partially metallic, is coated with a polybenzoxazine, the repeat units of which comprise at least one unit corresponding to the formulae (I) or (II): in which Z1 represents an at least divalent, aliphatic, cycloaliphatic or aromatic bonding group comprising at least one carbon atom and optionally at least one heteroatom selected from O, S, N and P; X1 and X2, which are identical or different, represent O or S; Ar1 and Ar2, which are identical or different, represent a substituted or unsubstituted phenylene group; and Z2 represents O or (S)n, the symbol “n” representing an integer equal to 1 or greater than 1. Such a reinforcement can be used for the reinforcement of a rubber article, in particular a motor vehicle tyre.

Abstract: Use of a benzoxazine resin (12) for the bonding of a monofilament (10) made of glass-resin composite including glass filaments (101) embedded in a thermosetting polyester resin (102), to a thermoplastic material (14), notably polyester; process for adhering such a monofilament to the thermoplastic material (14), including at least the following steps: —impregnating the monofilament (10) with a benzoxazine resin (12) in the liquid state; —after impregnation, heat-treating the monofilament (10) thus impregnated, so as to at least partly polymerize the benzoxazine resin (12); —depositing, onto the monofilament (10) thus adhesively coated, the thermoplastic material (14) in the molten state; —after cooling, optionally heat-treating the monofilament thus coated (R-1, R-2) to totally polymerize the benzoxazine resin (12) on contact with the thermoplastic material (14).

Abstract: Multicomposite material (R1, R2) including at least one monofilament (10) made of glass-resin composite including glass filaments (101) embedded in a thermoset polyester resin (102), this monofilament being covered with at least two superposed layers of different materials, a first layer (12) arranged on the surface of the monofilament and a second layer (14) of polyester thermoplastic material sheathing the whole, characterized in that the first layer (12) is a layer of benzoxazine and/or polybenzoxazine; finished articles or semi-finished products made of rubber, such as vehicle tyres, reinforced with such a material.

Abstract: Multicomposite material (R1, R2) including at least one monofilament (10) made of glass-resin composite including glass filaments (101) embedded in a thermoset polyester resin (102), characterized in that said monofilament is coated with at least one layer (12) of benzoxazine; use of such a material as reinforcer in finished articles or semi-finished products made of rubber; finished articles or semi-finished products made of rubber, such as vehicle tyres, reinforced with such a material.

Abstract: A process for depositing a metal-adhesive, hydrophobic and electrically conductive coating based on electrically conductive microparticles and on a polymer matrix P comprising at least one thermoplastic fluoropolymer P1 and a thermosetting resin P2, comprises: in a first container, dissolve the polymer P1 in an organic solvent; in a second container, disperse the electrically conductive microparticles in an organic solvent; add, in the first container, the thermosetting resin P2 in the liquid state; mix the contents of the containers, then deposit the mixture on the substrate; crosslink the resin P2 and remove the solvents, to obtain a first coating; then impregnate the surface of the substrate with an additional resin solution P2 dissolved in a third solvent, which is a solvent of the resin P2 and a non-solvent of the polymer P1; eliminate the third solvent and crosslink while compressing the additional resin P2 in order to obtain the targeted final coating.

Abstract: A sulfurized benzoxazine compound, which is usable for the synthesis of a polybenzoxazin, corresponds to formula (A): in which: each benzene nucleus of the two oxazine rings bears at least one radical denoted as “G”; the two oxazine rings are connected together via a central aromatic group, the benzene ring of which bears one, two, three or four groups of formula —Sx—R in which “x” is an integer from 1 to 8 and R represents hydrogen or a hydrocarbon-based group including 1 to 10 carbon atoms and optionally a heteroatom chosen from O, S, N and P; and the at least two radicals G, which may be identical or different, are chosen from various groups.

Abstract: A metallic or metallized reinforcer has at least a surface of which is at least partially metallic, the at least partially metallic surface being coated with a polybenzoxazine sulfide whose repeating units include at least one unit corresponding to formula (I) or (II): in which the two oxazine rings are connected together via a central aromatic group, the benzene ring of which bears one, two, three or four groups of formula —Sx—R in which “x” is an integer from 1 to 8 and R represents hydrogen or a hydrocarbon-based group including 1 to 10 carbon atoms and optionally a heteroatom chosen from O, S, N and P. Such a reinforcement can be used for the reinforcement of a rubber article, in particular a motor vehicle tire.

Abstract: A halogenated benzoxazine compound, which can be used in particular as monomer in the synthesis of polybenzoxazine, corresponds to the formula (the symbol Hal representing at least one halogen): in which: each benzene nucleus bears at least one halogen; R1 and R2, which are identical or different, represent hydrogen or an alkyl comprising from 1 to 8 carbon atoms; “x1” and “x2”, which are identical or different, are integers equal to or greater than 1; “x3” is an integer equal to or greater than 1; and X is a heteroatom chosen from O and S.

Abstract: A halogenated benzoxazine compound, which can be used in particular as monomer in the synthesis of polybenzoxazine, corresponds to the formula: in which: each benzene nucleus of the two oxazine rings bears at least one halogen (represented by the symbol Hal), in particular bromine, chlorine or fluorine; and Z1 and Z2, which are identical or different, represent an aliphatic, at least divalent, bonding group comprising at least one carbon atom and optionally at least one heteroatom chosen from O, S, N and P.

Abstract: A borated benzoxazine compound, which can be used in particular as monomer in the synthesis of polybenzoxazine, corresponds to the formula: in which: Z represents an at least divalent, aliphatic, cycloaliphatic or aromatic, bonding group comprising at least one carbon atom and optionally at least one heteroatom chosen from O, S and P; and R1, R2, R3 and R4, which are identical or different, represent hydrogen or an alkyl comprising from 1 to 12 carbon atoms, it being possible for R1 and R2, on the one hand, and R3 and R4, on the other hand, optionally to form a heterocycle with the two oxygen atoms and the boron atom to which they are respectively bonded.