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US 10,377,928 B2Granted
Structural adhesive compositions
AssigneePPG Industries Ohio, Inc.
InventorsTien-Chieh Chao, Masayuki Nakajima, Hongying Zhou, Shanti Swarup, Umesh C. Desai
Life of this patent
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Abstract
An adhesive composition comprising an epoxy compound and a compound comprising at least one aminimide functional group is disclosed. The compound comprising the at least one aminimide functional group is present in an amount from 2-8% by weight based on total weight of the adhesive composition and reacts with the epoxy compound upon activation by an external energy source. The adhesive composition also may comprise an amidine salt.
Claims24
An adhesive composition comprising:
- an epoxy compound;
- a polymeric compound comprising at least two aminimide functional groups, wherein the polymeric compound reacts with the epoxy compound upon activation by an external energy source;
- wherein the polymeric compound is present in an amount of 2-8% by weight based on total weight of the adhesive composition;
- and
- a secondary latent catalyst;
- a reaction product of reactants comprising an amidine and a second component selected from the group consisting of a carbonic acid, a salt of a carbonic acid, a carbonate, or combinations thereof;
- wherein the adhesive composition has less than a 100% increase in viscosity when stored at 25° C. for 90 days.
4 more elements
An adhesive composition comprising:
- an epoxy compound;
- a monomeric compound comprising at least one aminimide functional group, wherein the monomeric compound reacts with the epoxy compound upon activation by an external energy source;
- wherein the monomeric compound is present in an amount of 2-8% by weight based on total weight of the adhesive composition;
- a secondary latent catalyst;
- and
- a reaction product of reactants comprising an amidine and a second component selected from the group consisting of a carbonic acid, a salt of a carbonic acid, a carbonate, or combinations thereof;
- wherein the adhesive composition has less than a 100% increase in viscosity when stored at 25° C. for 90 days.
4 more elements
An adhesive composition comprising:
- an epoxy compound;
- an aminimide-containing compound present in an amount of 2% to 8% by weight based on total weight of the adhesive composition;
- a reaction product of reactants comprising an amidine and a second component selected from the group consisting of a carbonic acid, a salt of a carbonic acid, a carbonate, or combinations thereof;
- and
- a secondary latent catalyst;
- wherein the epoxy, the aminimide-containing compound, and the reaction product react upon activation by an external energy source;
- and
- wherein the adhesive composition has less than a 100% increase in viscosity when stored at 25° C. for 90 days.
5 more elements
Dependencies are inferred from the claim text.