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US 12,509,611 B2Granted
Anaerobically curable compositions containing alpha-methylene-lactones
AssigneeHenkel AG & Co. KGaA
InventorsAdrian Brandt, Horst Beck, Andreas Taden, Ralph Nemitz, Alexander Kux, Nigel Sweeney, David Birkett, Brendan Kneafsey, James A. Houlihan, Michael Doherty
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Abstract
The present invention relates to anaerobically curable compositions made from renewable materials. In particular, an alpha-methylene-lactone is used with a (meth)acrylate component and a cure system to form an anaerobically curable composition.
Claims3
An anaerobically curable composition comprising:
- polyethylene glycol dimethacrylate;
- α-methylene-γ-valerolactone;
- and
- an anaerobic cure system comprising saccharin, 1,4-napthoquinone, and N,N-diethyl-p-toluidine,
- wherein:
- the polyethylene glycol dimethacrylate is present in an amount of from 20 to 50 percent by weight, based on the total weight of the anaerobically curable composition,
- the α-methylene-γ-valerolactone is present in an amount of from 5 to 50 percent by weight, based on the total weight of the anaerobically curable composition, and
- the anaerobic cure system is present in an amount of from 0.2 to 2 percent by weight, based on the total weight of the anaerobically curable composition.
5 more elements
Dependencies are inferred from the claim text.