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US 5,688,876 AGranted
Curable epoxy resin composition cured with a mannich base
AssigneeAsahi Denka Kogyo Kabushiki Kaisha
InventorsKazuhiko Ando, Hiroshi Suzuki
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Abstract
A curable epoxy resin composition comprising (I) an epoxy resin having more than one epoxy groups per one molecule, and (II) a specific Mannich base as essential components, with the amount of the Mannich base (II) being 1 to 50 parts by weight per 100 parts by weight of the epoxy resin (I), is lowly odoriferous and therefore easy of handling, is excellent in low-temperature curing characteristics, and its cured product exhibits excellent resistances to water, chemicals and amine blushing, and excellent physical properties.
Claims1
A curable epoxy resin composition comprising:
- an epoxy resin having more than one epoxy groups per one molecule, and
- a Mannich base prepared by reacting (II-1) an aromatic compound having at least one phenolic hydroxyl group in the molecule, with (II-2) a carbonyl compound having at least one carbonyl group in the molecule, and (II-3) an amino compound represented by the formula:
- ##STR20## wherein R.sub.1 and R.sub.2 each represents an alkyl group having 1 to 5 carbon atoms, and X represents an alkylene group having 1 to 5 carbon atoms, at a molar ratio of (II-1)/(II-2)/(II-3) of 1/(0.1 to 3.0)/(0.1 to 3.0) and a molar ratio of (II-2)/(II-3) of 1/(1.0 to 2.0);
- wherein the amount of the Mannich base is 1 to 50 parts by weight per 100 parts by weight of the epoxy resin.
1 more element
Dependencies are inferred from the claim text.