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US 2006/0014882 A1Published application
Toughened cyanoacrylate compositions
AssigneeLoctite (R&D) Limited
InventorHanns Roland Misiak
Life of this patent
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Abstract
A cyanoacrylate adhesive composition having a toughening agent comprising poly(vinylidene-co-acrylonitrile) in combination with fumed silica. A useful amount of poly(vinylidene-co-acrylonitrile) is about 1.0% by weight to about 20.0% by weight fumed silica is usefully present in amounts of 1-10% by wt.
Claims17
A toughened cyanoacrylate composition comprising:
- a. a cyanoacrylate component;
- and
- b. poly(vinylidene-chloride-co-acrylonitrile);
- and
- c. fumed silica, wherein the fixturing time of the cyanoacrylate composition between two substrates is less than about 70 seconds.
2 more elements
A cyanoacrylate composition comprising:
- a. a cyanoacrylate component;
- b. poly(vinylidene-chloride-co-acrylonitrile);
- c. fumed silica;
- and
- d. one or more additives selected from the group consisting of stabilizers, accelerators, plasticizers, fillers other than fumed silica, opacifiers, thickeners, viscosity modifiers, inhibitors, thixotrophy conferring agents other than fumed silica, dyes, thermal degradation reducers, and combinations thereof,
- wherein upon cure, the cyanoacrylate composition has an average tensile shear strength in excess of about 1.0 N/mm.
3 more elements
A bonded assembly comprising:
- a. a first substrate having a first surface;
- b. another substrate having a second surface;
- and
- c. a cured cyanoacrylate adhesive composition disposed between said first and second surfaces, said composition, prior to cure, comprising:
- i. a cyanoacrylate component;
- ii. poly(vinylidene-chloride-co-acrylonitrile);
- iii. fumed silica;
- wherein the combination of ii and iii forms an interpenetrating molecular network with the cyanoacrylate component upon curing.
5 more elements
Dependencies are inferred from the claim text.