Accelerator for epoxy resins
AssigneeSika Technology AG
InventorsEdis KASEMI, Urs BURCKHARDT, Andreas KRAMER, Ursula STADELMANN
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Abstract
An amine of the formula (I) is used for curing of epoxy resins and enables surprisingly rapid and undisrupted curing and high final hardnesses, with formation of nice, faultless surfaces with high gloss even in the case of two-dimensional application and low temperatures. It is suitable as curing agent, co-curing agent and/or incorporable accelerator for epoxy resin products such as, in particular, coatings, adhesives, potting compounds or shaped bodies.
Claims15
A method for curing of epoxy resins, comprising contacting an epoxy resin with an amine of the formula (I):
- where n is 0 or 1 or 2, R is H or methyl and A is an alkylene radical having 2 to 6 carbon atoms.
An amine of the formula (Ia)
- where
- m is 1 or 2,
- R is H or methyl, and
- A is an alkylene radical having 2 to 6 carbon atoms.
A reaction product comprising at least one amine of the formula (Ia), obtained from the reductive alkylation of at least one amine of the formula (IIa) with at least one benzonitrile of the formula (III) and hydrogen,
- where
- m is 1 or 2,
- R is H or methyl, and
- A is an alkylene radical having 2 to 6 carbon atoms.
Dependencies are inferred from the claim text.