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US 9,315,651 B2Granted
Impact resistant modified compositions
AssigneeHenkel AG & Co. KGaA
InventorsRainer Schoenfeld, Andreas Taden, Stefan Kreiling, Claudia Mai, Michael Kux, Harald Kuster
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Abstract
The present invention relates to a polymerizable composition, containing at least one benzoxazine compound and certain oligomeric or polymeric urethane group-free polyether compounds. The present invention further relates to adhesives, sealants or coatings comprising the polymerizable composition according to the invention and the polymerization products of said composition.
Claims19
A polymerizable composition, comprising
- i) at least one benzoxazine compound and
- ii) at least one polyether compound, consisting of one or more structural elements of the general formula (I) having terminal groups independently selected from hydroxyl, carboxyl, amino, thiol, oxirane, aziridine or thiirane groups,
- in which n is a number from 5 to 10,000, each residue Ra in each repeating unit independently denotes a divalent group of compounds comprising 1 to 100 C atoms, each residue X′ in each repeating unit is independently selected from —O—, —S—, —NH— or a carboxyl group of the general form —(C═O)O—, in which the C atom of the carboxyl group is always connected to the residue A, each residue Y in each repeating unit is independently selected from —OH, —SH and —NH2 and each residue A in each repeating unit is independently selected from K or L, K denoting a divalent residue of aromatic dihydroxyl compounds following removal of both hydroxyl groups and L denoting a divalent residue of polyethers following removal of two terminal hydroxyl groups, with the proviso that, relative to the total number of all residues A in the polyether compound, 20 to 80% of all residues A denote K and 20 to 80% of all residues A denote L, wherein the polyether compound is free of oligomeric or polymeric urethane groups.
A polymerizable composition, comprising
- i) at least one benzoxazine compound and
- ii) at least one polyether compound,
- wherein the compound is free of oligomeric or polymeric urethane groups,
- obtainable by reacting at least one component A with at least one component B,
- component A being selected from the group consisting of
- (A-1) aromatic compounds having at least two aromatic hydroxyl, carboxyl, amino or thiol groups and
- (A-2) polyethers having at least two terminal hydroxyl, carboxyl, amino or thiol groups,
- and component B being selected from the group consisting of
- (B-1) polyethers having at least two terminal oxirane, aziridine or thiirane groups and
- (B-2) aromatic compounds of the general formula (VIII)
- in which each residue Rd and Re independently denotes a divalent group of compounds comprising 1 to 100 C atoms, each residue X′ is independently selected from —O—, —S—, —NH— or a carboxyl group of the general form —(C═O)O—, in which the C atom of the carboxyl group is always connected to the residue D, W is selected from —O—, —S— or —NH— and the residue D comprises at least one aromatic group,
- with the proviso that the exclusive reaction of one or more components satisfying the definition of (A-1) with one or more components satisfying the definition of (B-2) and the exclusive reaction of one or more components satisfying the definition of (A-2) with one or more components satisfying the definition of (B-1) is excluded.
9 more elements
A polymerizable composition, comprising
- i) at least one benzoxazine compound and
- ii) as a toughening agent, from 5 to 40 wt. %, based on the total weight of the polymerizable composition, at least one polyether compound having a weight average molecular weight of from 1000 to 100,000 and comprising one or more structural elements of the general formula (I),
- in which n is a number from 5 to 10,000, each residue Ra in each repeating unit independently denotes a divalent group of compounds comprising 1 to 100 C atoms, each residue X′ in each repeating unit is independently selected from —O—, —S—, —NH— or a carboxyl group of the general form —(C═O)O—, in which the C atom of the carboxyl group is always connected to the residue A, each residue Y in each repeating unit is independently selected from —OH, —SH and —NH2 and each residue A in each repeating unit is independently selected from K or L, K denoting a divalent residue of aromatic dihydroxyl compounds following removal of both hydroxyl groups and L denoting a divalent residue of polyethers following removal of two terminal hydroxyl groups, with the proviso that, relative to the total number of all residues A in the polyether compound, 20 to 80% of all residues A denote K and 20 to 80% of all residues A denote L, wherein the polyether compound is free of oligomeric or polymeric urethane groups.
Dependencies are inferred from the claim text.