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US 6,642,337 B1Granted
Stabilized cyanoacrylate adhesives
AssigneeHenkel Kommanditgesellschaft auf Aktien
InventorsHanns-Roland Misiak, Dagmar Behn
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Abstract
The problem addressed by the invention was to find an anionic polymerization inhibitor for cyanoacrylate adhesives containing one or more cyanoacrylates, stabilizers against anionic and radical polymerization and auxiliaries typically used in such adhesive systems which, besides a reliable inhibiting effect, would counteract any increase in the setting time after storage. This problem was solved by using 2-oxo-1,3,2-dioxathiolanes as inhibitors.
Claims17
A cyanoacrylate adhesive comprised of
- (a) one or more cyanoacrylates;
- (b) one or more radical polymerization inhibitors;
- and
- (c) one or more anionic polymerization inhibitors, comprising from 50 to 700 ppm of a 2-oxo-1,3,2-dioxathiolane.
1 more element
A cyanoacrylate adhesive comprised of
- (a) one or more cyanoacrylates, at least one of said cyanoacrylates being an ester of alpha-cyanoacrylic acid and a C1-10 alcohol;
- (b) one or more radical polymerization inhibitors;
- and
- (c) one or more anionic polymerization inhibitors comprising 50 to 700 ppm of 2-oxo-1,3,2-dioxathiolanes substituted in the 4 position, the 5 position or both the 4 and 5 positions with a C1-C8 alkyl group.
1 more element
Dependencies are inferred from the claim text.