US4245077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized acid-containing anaerobic compositions
Assignee: Henkel Loctite Corp
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Filing: 1978-03-29
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Granted: 1981-01-13
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Expires: 1998-03-29
Abstract
Abstract Anaerobic compositions containing strong acid impurities and/or strong acid precursors are neutralized and stabilized against the degrading effects of pH decrease during storage by adding about 0.1 to about 10 percent by weight of the total composition of an epoxy.
Inventors
- 👤 JoAnn DeMarco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:09
CPC Classifications
C; C09; C09J; C09J4/00
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
132 words
An anaerobic composition, containing at least about 0.1 milliequivalent of strong acid and/or equivalent strong acid precursors and stabilized against degradation caused by strong acid, comprising: (a) at least one acrylate or methacrylate monomer; (b) a free radical initiator in sufficient concentration to initiate cure of the monomer upon exclusion of oxygen; (c) optionally, an inhibitor of free radical polymerization in sufficient concentration to prevent cure of the monomer prior to exclusion of oxygen; (d) optionally, an accelerator of free radical polymerization; and (e) as a stabilizer against degradation caused by strong acid, about 0.1 to about 10 percent by weight of the total composition of an epoxy selected from the group consisting of the epoxies of aromatic glycols and styrene oxide, linear epoxies of alkylene glycols, and epoxies of organic oils.
Claim 2
Dependent Claim
132 words
An anaerobic composition, containing at least about 0.1 milliequivalent of strong acid and/or equivalent strong acid precursors and stabilized against degradation caused by strong acid, comprising: (a) at least one acrylate or methacrylate monomer; (b) a free radical initiator in sufficient concentration to initiate cure of the monomer upon exclusion of oxygen; (c) optionally, an inhibitor of free radical polymerization in sufficient concentration to prevent cure of the monomer prior to exclusion of oxygen; (d) optionally, an accelerator of free radical polymerization; and (e) as a stabilizer against degradation caused by strong acid, about 0.1 to about 10 percent by weight of the total composition of an epoxy selected from the group consisting of the epoxies of aromatic glycols and styrene oxide, linear epoxies of alkylene glycols, and epoxies of organic oils.
Claim 3
Dependent Claim
12 words
A composition of claim 1 wherein the initiator is an organic hydroperoxide.
Claim 4
Dependent Claim
12 words
A composition of claim 2 wherein the organic hydroperoxide is cumene hydroperoxide.
Claim 5
Dependent Claim
11 words
A composition of claim 2 wherein the monomer is polyethyleneglycol dimethacrylate.
Claim 6
Dependent Claim
11 words
A composition of claim 2 wherein the monomer is triethyleneglycol dimethacrylate.
Claim 7
Dependent Claim
9 words
A composition of claim 2 containing a sulfimide accelerator.
Claim 8
Dependent Claim
11 words
A composition of claim 6 wherein the sulfimide accelerator is saccharin.
Claim 9
Dependent Claim
9 words
A composition of claim 2 containing an amine accelerator.
Claim 10
Dependent Claim
9 words
A composition of claim 2 containing a quinone inhibitor.
Claim 11
Dependent Claim
14 words
A composition of claim 1 wherein the epoxy is dissolved in the anaerobic composition.
Claim 12
Dependent Claim
11 words
A composition of claim 1 wherein the epoxy is bisphenol-A epoxy.
Claim 13
Dependent Claim
11 words
A composition of claim 1 wherein the epoxy is bisphenol-F epoxy.
Claim 14
Dependent Claim
12 words
A composition of claim 1 wherein the epoxy is propylene oxide epoxy.
Claim 15
Dependent Claim
11 words
A composition of claim 1 wherein the epoxy is glycidyl methacrylate.
Claim 16
Dependent Claim
24 words
A composition of claim 1 wherein the concentration of the epoxy is about 0.2 to about 5 percent by weight of the total composition.
Claim 17
Independent Claim
138 words
A method of stabilizing against degradation caused by strong acid an anaerobic composition containing at least about 0.1 milliequivalent of strong acid and/or equivalent strong acid precursors and comprising (a) at least one acrylate or methacrylate monomer; (b) a free radical initiator in sufficient concentration to initiate cure of the monomer upon exclusion of oxygen; (c) optionally, an inhibitor of free radical polymerization in sufficient concentration to prevent cure of the monomer prior to exclusion of oxygen; (d) optionally, an accelerator of free radical polymerization; said method comprising including in the anaerobic composition, as a stabilizer against degradation caused by strong acid, about 0.1 to about 10 percent by weight of the total composition of an epoxy selected from the group consisting of aromatic glycols and styrene oxide, linear epoxies of alkylene glycols, and epoxies of organic oils.
Claim 18
Independent Claim
138 words
A method of stabilizing against degradation caused by strong acid an anaerobic composition containing at least about 0.1 milliequivalent of strong acid and/or equivalent strong acid precursors and comprising (a) at least one acrylate or methacrylate monomer; (b) a free radical initiator in sufficient concentration to initiate cure of the monomer upon exclusion of oxygen; (c) optionally, an inhibitor of free radical polymerization in sufficient concentration to prevent cure of the monomer prior to exclusion of oxygen; (d) optionally, an accelerator of free radical polymerization; said method comprising including in the anaerobic composition, as a stabilizer against degradation caused by strong acid, about 0.1 to about 10 percent by weight of the total composition of an epoxy selected from the group consisting of aromatic glycols and styrene oxide, linear epoxies of alkylene glycols, and epoxies of organic oils.
Claim 19
Dependent Claim
12 words
A method of claim 16 wherein the initiator is an organic hydroperoxide.
Claim 20
Dependent Claim
12 words
A method of claim 17 wherein the organic hydroperoxide is cumene hydroperoxide.
Claim 21
Dependent Claim
11 words
A method of claim 17 wherein the monomer is polyethyleneglycol dimethacrylate.
Claim 22
Dependent Claim
11 words
A method of claim 17 wherein the monomer is triethyleneglycol dimethacrylate.
Claim 23
Dependent Claim
9 words
A method of claim 17 containing a sulfimide accelerator.
Claim 24
Dependent Claim
11 words
A method of claim 21 wherein the sulfimide accelerator is saccharin.
Claim 25
Dependent Claim
9 words
A method of claim 17 containing an amine accelerator.
Claim 26
Dependent Claim
9 words
A method of claim 17 containing a quinone inhibitor.
Claim 27
Dependent Claim
14 words
A method of claim 16 wherein the epoxy is dissolved in the anaerobic composition.
Claim 28
Dependent Claim
11 words
A method of claim 16 wherein the epoxy is bisphenol-A epoxy.
Claim 29
Dependent Claim
11 words
A method of claim 16 wherein the epoxy is bisphenol-F epoxy.
Claim 30
Dependent Claim
12 words
A method of claim 16 wherein the epoxy is propylene oxide epoxy.
Claim 31
Dependent Claim
11 words
A method of claim 16 wherein the epoxy is glycidyl methacrylate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-13 | 1984-07-14 | 1985-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-13 | 1988-07-14 | 1989-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-13 | 1992-07-14 | 1993-01-13 | $7700.00 | Window Closed / Lapsed |