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US 11,555,135 B2Granted
Cyanoacrylate compositions
AssigneeHenkel AG & Co. KGaA
InventorsRaymond P. Tully, Rory Barnes, Mark Loane, Deborah Coleman
Life of this patent
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Abstract
Cyanoacrylate compositions, methods for forming same, and applications thereof are disclosed. The compositions demonstrate improved thermal ageing performance, including improved tensile strength performance after heat ageing in high humidity.
Claims16
A cyanoacrylate composition comprising:
- (a) a cyanoacrylate component;
- (b) a toughening agent comprising a copolymer of ethylene and vinyl acetate, wherein the vinyl acetate content in the copolymer is in an amount of about 50 wt % to about 95 wt %, based on the total weight of the copolymer, and wherein the toughening agent is present in the composition in an amount of about 2 wt % to about 25 wt %, based on the total weight of the cyanoacrylate composition;
- (c) a component having at least two (meth)acrylate functional groups having the formula:
- wherein R1 and R2 are the same or different and are selected from the group consisting of H or Me;
- and wherein X is a C4 to C30 alkyl chain and wherein said chain is optionally substituted with one or more acrylate and/or methacrylate functional groups, and/or one or more C1-C10 alkyl groups;
- (d) a benzonitrile component;
- and
- (e) an anhydride component.
5 more elements
Dependencies are inferred from the claim text.