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US3658624A Expired / Lapsed US ⏱️ 0.0 years remaining

Bonding method employing a two part anaerobically curing adhesive composition

Assignee: Hexion Inc
•
Filing: 1969-09-29
•
Granted: 1972-04-25
•
Expires: 1989-09-29
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Abstract

Abstract A method for producing a rapid and effective bond between two surfaces which comprises applying to a first surface to be bonded a composition which is stable for an extended period in the presence of oxygen and comprises a major proportion of a monomer having anaerobic curing properties and a minor proportion of a first accelerator moiety, separately applying to a second surface to be bonded, or to the first surface immediately before bonding, a second composition, also stable for an extended period in the presence of oxygen and comprising a major proportion of a monomer having anaerobic curing properties and a minor proportion of a second accelerator moiety complementary to the first and bringing the first and second surfaces together to allow the said compositions to combine anaerobically, the accelerator moieties in the compositions being so chosen that they act synergistically when combined.

Inventors

  • 👤 William Arthur Lees

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 09:49
CPC Classifications
C; C09; C09J; C09J5/00; C09J5/04; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/20; C09J4/00

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 37 words
The method of claim 1, wherein the first accelerator moiety and the second complementary accelerator moiety are each employed in an amount from 1 - 10 parts by weight for each 100 parts by weight of monomer.
Claim 2
Dependent Claim 19 words
The method of claim 2, wherein the peroxide has a half-life in excess of 5 hours at 100* C.
Claim 3
Dependent Claim 25 words
The method of claim 2, wherein the monomer has the general formula I and at least one of the surfaces to be bonded is non-metallic.
Claim 4
Dependent Claim 11 words
The method of claim 4, wherein the monomer is tetraethyleneglycol dimethylacrylate.
Claim 5
Dependent Claim 25 words
The method of claim 2, wherein the monomer has the general formula II and at least one of the surfaces to be bonded is non-metallic.
Claim 6
Dependent Claim 16 words
The method according to claim 6, wherein the monomer is a monoacrylate ester of dimethyleneglycol monomethylether.
Claim 7
Dependent Claim 18 words
The method of claim 2, wherein the first accelerator moiety is N,N-dimethyl-p-toluidine, N,N-dimethyl aniline, triethylamine, tri-n-butylamine or 2-diethylaminoethanol.
Claim 8
Dependent Claim 12 words
The method of claim 2, wherein the complementary accelerator moiety is saccharin.
Claim 9
Dependent Claim 17 words
The method of claim 1, wherein the surfaces to be bonded are a nut and a bolt.
Claim 10
Dependent Claim 11 words
The method of claim 1, wherein the monomer is N-methyl methacrylamide.
Claim 11
Dependent Claim 13 words
The method of claim 1, wherein the complementary accelerator moiety is benzoic acid.
Claim 12
Dependent Claim 15 words
The method according to claim 6, wherein the monomer is pentaerythrityl tetrakis (dimethylene glycol acrylate).

References Cited (Backward Citations)

US2895950A Cited
US2894932A Cited
US3041322A Cited
US3046262A Cited
US3125480A Cited
US3218305A Cited
US3180777A Cited
US3435012A Cited
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US3479246A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-04-25 1975-10-25 1976-04-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-04-25 1979-10-25 1980-04-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-04-25 1983-10-25 1984-04-25 $7700.00 Window Closed / Lapsed

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