Polybenzoxazine that can be used for coating metal and for the bonding of same to rubber
AssigneeCompagnie Generale Des Etablissements Michelin
InventorsMilan Fedurco, Marco Ribezzo
Life of this patent
Estimating the term…
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.
Claims11
A polybenzoxazine, the repeat units of which comprise at least one unit corresponding to the formula (I) or (II):
- wherein Z1 and Z2 are different one of Z1 and Z2 represents an aliphatic group comprising from 1 to 20 carbon atoms or a cycloaliphatic group comprising from 3 to 20 carbon atoms, and optionally at least one heteroatom chosen from O, S, N and P, and the other of Z1 and Z2 represents an aromatic group comprising from 6 to 30 carbon atoms, and optionally at least one heteroatom chosen from O, S, N and P.
A polybenzoxazine, the repeat units of which comprise at least one unit corresponding to the formula (I) or (II):
- wherein one of Z1 and Z2 comprises a group selected from the group consisting of —(CH2)x—, —CH2-Ph-CH2—, —(CH2—CH2—X)n— and —(CH(CH3)—CH2—X)n—,
- wherein x and n are integers from 1 to 20, Ph represents a benzene ring, and X represents at least one heteroatom chosen from oxygen, sulfur, nitrogen and phosphorus, and
- wherein the other of Z1 and Z2 represents an aromatic group comprising from 6 to 30 carbon atoms, and optionally at least one heteroatom chosen from O, S, N and P.
A coating for a substrate, at least the surface of which is at least partially metallic, comprising a polybenzoxazine, the repeat units of which comprise at least one unit corresponding to the formulae (I) or (II):
- wherein Z1, Z2, or both Z1 and Z2, which are identical or different, represent an aromatic group comprising from 6 to 30 carbon atoms, and optionally at least one heteroatom chosen from O, S, N and P, and
- wherein, when Z1 and Z2 are different, one of Z1 and Z2 is as defined above and one of Z1 and Z2 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.
A method of bonding metal to rubber comprising:
- coating a substrate, at least the surface of which is at least partially metallic, with a substrate coating comprising a polybenzoxazine, the repeat units of which comprise at least one unit corresponding to the formulae (I) or (II):
- wherein Z1, Z2, or both Z1 and Z2, which are identical or different, represent an aromatic group comprising from 6 to 30 carbon atoms, and optionally at least one heteroatom chosen from O, S, N and P, and
- wherein, when Z1 and Z2 are different, one of Z1 and Z2 is as defined above and one of Z1 and Z2 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.
A substrate, at least the surface of which is at least partially metallic, wherein the at least partially metallic portion is coated with a polybenzoxazine, the repeat units of which comprise at least one unit corresponding to the formulae (I) or (II):
- wherein Z1, Z2, or both Z1 and Z2, which are identical or different, represent an aromatic group comprising from 6 to 30 carbon atoms, and optionally at least one heteroatom chosen from O, S, N and P, and
- wherein, when Z1 and Z2 are different, one of Z1 and Z2 is as defined above and one of Z1 and Z2 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.
Dependencies are inferred from the claim text.