Borated benzoxazine for use in the synthesis of polybenzoxazine
AssigneeCompagnie Generale Des Etablissements Michelin
InventorsMilan Fedurco, Marco Ribezzo
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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.
Claims17
A borated benzoxazine compound corresponding 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, or R3 and R4, or both R1 and R2, and R3 and R4, optionally to form a heterocycle with the two oxygen atoms and the boron atom to which they are respectively bonded.
A process for the synthesis of a polybenzoxazine comprising the step of:
- polycondensating a borated benzoxazine compound corresponding 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, or R3 and R4, or both R1 and R2, and R3 and R4, optionally to form a heterocycle with the two oxygen atoms and the boron atom to which they are respectively bonded;
- wherein the borated benzoxazine compound corresponding to the formula (A), as a first monomer, is polycondensated with, as second monomer, at least a brominated benzoxazine having the formula (B):
- in which Z′, which is identical to or different from 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.
A borated benzoxazine compound corresponding to the formula:
- in which:
- Z represents an 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, or R3 and R4, or both R1 and R2, and R3 and R4, optionally to form a heterocycle with the two oxygen atoms and the boron atom to which they are respectively bonded.
Dependencies are inferred from the claim text.