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US 2026/0184974 A1Published application
Color stable epoxy compositions with long pot life
Assignee3M Innovative Properties Company
InventorYangbin Chen
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Abstract
Curable compositions are described. In particular, curable compositions including non-aromatic epoxy resin, non-aromatic anhydride-based curing agents, colorant, and a solid nitrogen-containing catalyst are described. Such curable compositions may exhibit long useful pot life when stored at room temperature.
Claims25
A curable composition, comprising:
- a non-aromatic epoxy resin;
- a non-aromatic anhydride-based curing agent;
- a colorant;
- and
- a nitrogen-containing catalyst, wherein the nitrogen-containing catalyst is solid at temperatures below 25° C.
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A method of using a curable composition, comprising:
- providing a curable composition comprising a non-aromatic epoxy resin, a non-aromatic anhydride-based curing agent, a colorant, and a nitrogen-containing catalyst, wherein the nitrogen-containing catalyst is solid at temperatures below 25° C.;
- storing the curable composition at a temperature between 20° C.-25° C. for at least 1 day;
- dispensing the curable composition on a substrate;
- and
- optionally curing the curable composition.
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Dependencies are inferred from the claim text.