US4038475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Highly stable anaerobic compositions
Assignee: Henkel Loctite Corp
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Filing: 1975-08-28
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Granted: 1977-07-26
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Expires: 1995-08-28
Abstract
Abstract Anaerobic compositions possessing high stability, and which are capable of extremely rapid speed of cure, are prepared by adding to a combination of a polymerizable acrylate ester monomer and a peroxy polymerization initiator therefor, a small but effective amount of a soluble metal chelating agent which does not materially affect the speed of cure of the anaerobic composition when used on metal surfaces.
Inventors
- 👤 Elliott Frauenglass
- 👤 Gerhardt P. Werber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:48
CPC Classifications
C; C09; C09J; C09J4/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
87 words
An anaerobic composition comprising a polymerizable acrylate ester monomer, a peroxy polymerization initiator therefor, as accelerators of free radical polymerization an organic amine and an organic sulfimide, an inhibitor of free radical polymerization selected from the class consisting of guinones having an oxidation-reduction potential of about 0.6 volt or less, said anaerobic composition having added thereto from about 1 to about 1000 parts per million by weight of said anaerobic composition of a soluble chelator having ligand atoms other than nitrogen ligand atoms of the >C=N-- type.
Claim 2
Dependent Claim
87 words
An anaerobic composition comprising a polymerizable acrylate ester monomer, a peroxy polymerization initiator therefor, as accelerators of free radical polymerization an organic amine and an organic sulfimide, an inhibitor of free radical polymerization selected from the class consisting of guinones having an oxidation-reduction potential of about 0.6 volt or less, said anaerobic composition having added thereto from about 1 to about 1000 parts per million by weight of said anaerobic composition of a soluble chelator having ligand atoms other than nitrogen ligand atoms of the >C=N-- type.
Claim 3
Dependent Claim
12 words
The anaerobic composition of claim 1 wherein the sulfimide is benzoic sulfimide.
Claim 4
Dependent Claim
11 words
The anaerobic composition of claim 1 wherein the quinone is 1,4-naphthoquinone.
Claim 5
Dependent Claim
14 words
The anaerobic composition of claim 1 wherein the chelator is tetrasodium ethylenediamine tetraacetic acid.
Claim 6
Dependent Claim
88 words
A process of improving an anaerobic composition comprising a polymerizable acrylate monomer, a peroxy polymerization initiator therefor, as accelerators of free radical polymerization an organic amine and an organic sulfimide, an inhibitor of free radical polymerization selected from the class consisting of quinones having an oxidation-reduction potential of about 0.6 volt or less, which process comprises adding thereto from about 1 to about 1000 parts per million by weight of said anaerobic composition of a soluble chelator having ligand atoms other than nitrogen ligand atoms of the >C=N--type.
Claim 7
Dependent Claim
88 words
A process of improving an anaerobic composition comprising a polymerizable acrylate monomer, a peroxy polymerization initiator therefor, as accelerators of free radical polymerization an organic amine and an organic sulfimide, an inhibitor of free radical polymerization selected from the class consisting of quinones having an oxidation-reduction potential of about 0.6 volt or less, which process comprises adding thereto from about 1 to about 1000 parts per million by weight of said anaerobic composition of a soluble chelator having ligand atoms other than nitrogen ligand atoms of the >C=N--type.
Claim 8
Dependent Claim
11 words
A process of claim 5 wherein the sulfimide is benzoic sulfimide.
Claim 9
Dependent Claim
10 words
A process of claim 5 wherein the quinone is 1,4-naphthoquinone.
Claim 10
Dependent Claim
13 words
A process of claim 5 wherein the chelator is tetrasodium ethylenediamine tetraacetic acid.
Claim 11
Dependent Claim
117 words
The composition of claim 1 wherein the acrylate ester is a polyacrylate ester of the formula ##STR9## wherein R 1 represents a radical selected from the group consisting of hydrogen, lower alkyl of from 1 to about 4 carbon atoms, hydroxy alkyl of from 1 to about 4 carbon atoms, and ##STR10## R 2 is a radical selected from the group consisting of hydrogen, halogen, and lower alkyl of from 1 to about 4 carbon atoms; R 3 is a radical selected from the group consisting of hydrogen, hydroxyl, and ##STR11## m is an integer equal to at least 1, n is an integer equal to at least 1, and p is one of the following: 0,1.
Claim 12
Dependent Claim
15 words
The composition of claim 1 wherein the chelator has at least one non-nitrogen ligand atom.
Claim 13
Dependent Claim
18 words
The composition of claim 10 wherein the chelating agent possesses a combination of oxygen and nitrogen ligand atoms.
Claim 14
Dependent Claim
20 words
The composition of claim 1 wherein the chelating agent is selected from the class consisting of alpha and beta aminocarboxylates.
Claim 15
Dependent Claim
14 words
The composition of claim 12 wherein the chelating agent is tetrasodium ethylenediamine tetraacetic acid.
References Cited (Backward Citations)
US3218305A
Cited
US3565877A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-25 | 1981-01-24 | 1981-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-25 | 1985-01-24 | 1985-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-25 | 1989-01-24 | 1989-07-26 | $7700.00 | Window Closed / Lapsed |