Curative for anaerobic adhesive compositions
AssigneeLoctite (R&D) Limited
InventorsCiaran B. McArdle, Rory B. Barnes
Life of this patent
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Abstract
The present invention provides a new class of materials effective as curatives for anaerobic adhesive compositions. The addition of these materials into anaerobic adhesives as a replacement for conventional curatives, such as APH, surprisingly provides at least comparable cure speeds and physical properties for the reaction products formed therefrom.
Claims12
An anaerobic adhesive composition, comprising:
- (a) a (meth)acrylate component;
- and
- (b) an anaerobic cure-inducing composition comprising an anaerobic curative within the following structure:
- wherein A and A1 is selected from O and N;
- and
- R, R1, R2 and R3 are the same or different and are selected from alkyl, alkenyl, cycloalkyl, cycloclkenyl, and aryl, having from 1 to about 30 carbon atoms, and optionally substituted or interrupted with a heteroatom, and heterocyclic structures, or
- R1 and R3 taken together join to form a cyclic structure having from about 20 to about 28 ring atoms, and together represent dialkyl substituted polyether structures that are optionally substituted or interrupted with the trithiadiaza pentalene structure, which itself is optionally substituted by A1, R2, or R3, as defined above.
A method of using as a curative for anaerobic adhesives compounds within the following structure:
- wherein A and A1 are selected from O and N;
- R, R1, R2 and R3 are the same or different, and selected from hydrogen, alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl, having from 1 to about 30 carbon atoms, and optionally substituted or interrupted with a heteroatom, and heterocyclic structures, or
- R1 and R3, taken together, join to form a cyclic structure having from about 20 to about 28 ring atoms, and together represent dialkyl substituted polyether structures that may be substituted or interrupted with the trithiadiaza pentalene structure, which itself is optionally substituted by A1, R2, or R3, as defined above, a step of which comprises providing the curative for use with the anaerobic adhesive.
A method of preparing an anaerobic adhesive composition, comprising the steps of:
- mixing together a (meth)acrylate component and an anaerobic curative within the following structure:
- wherein A and A1 are selected from O and N;
- and
- R, R1, R2 and R3 are selected from alkyl, alkenyl, cycloalkyl, cycloclkenyl, aryl, having from 1 to about 30 carbon atoms, and are optionally substituted or interrupted with a heteroatom, and heterocyclic structures, or
- R1 and R3 taken together join to form a cyclic structure having from about 20 to about 28 ring atoms, and together represent dialkyl substituted polyether structures that are optionally substituted or interrupted with the trithiadiaza pentalene structure, which itself is optionally substituted by A1, R2, or R3, as defined above.
A method of using an anaerobic curative within the following structure:
- wherein A and A1 are selected from O and N;
- and
- R, R1, R2 and R3 are selected from alkyl, alkenyl, cycloalkyl, cycloclkenyl, aryl, having from 1 to about 30 carbon atoms, and are optionally substituted or interrupted with a heteroatom, and heterocyclic structures, or
- R1 and R3 taken together join to form a cyclic structure having from about 20 to about 28 ring atoms, and together represent dialkyl substituted polyether structures optionally substituted or interrupted with the trithiadiaza pentalene structure, which itself is optionally substituted by A1, R2, or R3, as defined above as a replacement for acetyl phenylhydrazine in anaerobic adhesive compositions, a step of which comprises providing the curative for use in the anaerobic adhesive.
Dependencies are inferred from the claim text.