Abstract: A process for producing a benzoxazine containing free aliphatic hydroxyl groups and monoester comprising the steps of: a) a reaction of a phenolic acid derivative with a monofunctional oligomer or molecule at a temperature of from 80° C. to 200° C., during 12 h-48 h, in a presence of a Bronsted type acid catalyst, resulting in a monophenol terminated oligomer or molecule and b) reaction of the monophenol terminated oligomer or molecule of step a) with a mixture of an amino-alcohol, a primary amine derivative and paraformaldehyde at a temperature range of from 80° C. to 100° C., from 1 h to 48 h, under stirring.

Abstract: A process for producing a benzoxazine containing free aliphatic hydroxyl groups and monoester comprising the steps of: a) a reaction of a phenolic acid derivative with a monofunctional oligomer or molecule at a temperature of from 80° C. to 200° C., during 12 h-48 h, in a presence of a Bronsted type acid catalyst, resulting in a monophenol terminated oligomer or molecule and b) reaction of the monophenol terminated oligomer or molecule of step a) with a mixture of an amino-alcohol, a primary amine derivative and paraformaldehyde at a temperature range of from 80° C. to 100° C., from 1 h to 48 h, under stirring.

Abstract: The present invention is directed to a rubber composition comprising 100 phr of one or more diene-based elastomers, 30 phr to 200 phr of a filler, and a benzoxazine which is the reaction of (i) a diphenol comprising two phenol groups and a bridge covalently connecting the two phenol groups, (ii) an aldehyde derivative, and (iii) an amine, wherein the bridge is connected to at least one of the phenol groups at a meta position of said at least one phenol group. The present invention is also directed to a rubber product comprising such a rubber composition and the use of such rubber products in tire components.

Abstract: An ester containing benzoxazine monomer and to a process for synthesizing the monomer and to vitrimers obtained through the polymerization of the ester containing benzoxazine monomer.

Abstract: Disulfide-containing benzoxazine monomers of formula I Also a process for synthesizing a disulfide-containing benzoxazine monomer of formula I comprises the following steps consisting of providing a mixture comprising an amino disulfide compound:H2N—R—NH2, wherein R is as defined for the monomer of formula I, an aldehyde derivative; phenolic derivatives, stirring the mixture under a temperature of from 50° C. to 130° C. for 1 h to 48 h, for obtaining the monomer of formula I; wherein the respective stoichiometry of the amino disulfide compound: aldehyde derivative:phenolic derivatives is 1:4: x1+x2, with x1+x2=2 and 0<x1;x2<2. Also a process for preparing a polybenzoxazine derivative vitrimer comprising a polymerization of the benzoxazine monomer at temperatures within the range of from 100° C. to 250° C. for 1 h to 24 h, for obtaining the polybenzoxazine derivatives vitrimer.

Abstract: The present invention is directed to a rubber composition comprising 100 phr of one or more diene-based elastomers, 30 phr to 200 phr of a filler, and a benzoxazine which is the reaction of (i) a diphenol comprising two phenol groups and a bridge covalently connecting the two phenol groups, (ii) an aldehyde derivative, and (iii) an amine, wherein the bridge is connected to at least one of the phenol groups at a meta position of said at least one phenol group. The present invention is also directed to a rubber product comprising such a rubber composition and the use of such rubber products in tire components.