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US 2014/0275446 A1Published application
Hardeners for epoxy resins, which comprise aromatic amino groups
AssigneeSika Technology AG
InventorsAndreas Kramer, Edis Kasem
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Abstract
The present invention relates to hardeners for epoxy resins, which contain secondary aliphatic and primary aromatic amino groups. They harden surprisingly quickly together with epoxy resins even under cold and humid conditions and without blushing effects to give films with a high degree of hardness. They are especially suitable for coatings with high resistance requirements.
Claims15
Hardener, suitable for hardening epoxy resins, containing at least one amine with at least one amino group of formula (I),
- wherein
- R represents a hydrogen atom or an alkyl group with 1 to 12 C atoms;
- Y represents either a hydrogen atom or a monohydric hydrocarbon moiety with 1 to 12 C atoms or an alkoxy or aryloxy group with 1 to 12 C atoms;
- and b represents 1 or 2.
1 more element
Dependencies are inferred from the claim text.