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US 6,723,763 B2Granted
Cure accelerators for anaerobic adhesive compositions
AssigneeHenkel Loctite Corporation
InventorsQinyan Zhu, Shabbir Attarwala
Life of this patent
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Abstract
The present invention provides a new class of materials effective as accelerators for curing anaerobic adhesives. The addition of these materials into anaerobic adhesives as a replacement for conventional curatives, such as APH and/or toluidines, surprisingly provides at higher cure speeds and comparable physical properties for the reaction products formed therefrom.
Claims11
An anaerobic adhesive composition, comprising:
- (a) a (meth)acrylate component;
- (b) an anaerobic cure-inducing composition;
- and
- (c) a phenylene diamine-based cure accelerator within structure I:
- wherein R and R1 may be the same or different and may be selected from C1-12 alkyl, C1-12 alkenyl, C5-12 cyclo or bicycloalkyl, C6-18 aryl, and derivatives thereof, and
- is C6-18 arylene, and derivatives thereof and oxidized versions thereof.
3 more elements
A method of using as a cure accelerator for anaerobic adhesive compounds within structure I:
- where R and R1 may be the same or different and may be selected from C1-12 alkyl, C1-12 alkenyl, C5-12 cyclo or bicycloalkyl, C6-18 aryl, and derivatives thereof, and
- is C6-18 arylene, and derivatives thereof, and oxidized versions thereof providing a (meth)acrylate component, providing an anaerobic cure-inducing composition, providing a cure accelerator of structure I, wherein compound of structure I accelerates cure of anaerobic adhesive compounds comprising methacrylate component.
A method of preparing an anaerobic adhesive composition, comprising the step of:
- mixing together a (meth)acrylate component, an anaerobic cure inducing composition and an anaerobic cure accelerator within structure I:
- wherein R and R1 may be the same or different and may be selected from C1-12 alkyl, C1-12 alkenyl, C5-12 cyclo or bicycloalkyl, C6-18 aryl, and derivatives thereof, and
- is C6-18 arylene, and derivatives thereof, and oxidized versions thereof.
Dependencies are inferred from the claim text.