Amine for low-emission epoxy resin compositions
AssigneeSika Technology Agh
InventorsEdis Kasemi, Andreas Kramer, Ursula Stadelmann, Urs Burckhardt
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Abstract
An amine of the formula (I) and a process for its preparation by reductive alkylation of 1,2-propylenediamine with a di- or trifunctional carbonyl compound and hydrogen. The amine of the formula (I) is low in viscosity and in odour, high in reactivity towards epoxides and outstanding in its compatibility with other amines and with epoxy resins. The amine of the formula (I) allows access to low-emission epoxy resin compositions which have good processing qualities, cure rapidly even at low temperatures and form high-quality, high-hardness plastics having an attractive surface.
Claims18
An amine of formula (I)
- wherein
- n is 2 or 3,
- R is a hydrogen radical or is methyl or phenyl, and
- A is a radical selected from the group consisting of:
- wherein
- m is 0, 1, or 2,
- X is a radical independently selected from the group consisting of alkyl and alkoxy having 1 to 4 carbon atoms, and
- Z is an oxygen atom or a sulfur atom.
An amine that
- is 1,4-bis(2-aminopropylaminomethyl)benzene or 1,4-bis(2-aminopropylaminomethyl)cyclohexane.
Dependencies are inferred from the claim text.