Patent US3925322A successfully refreshed from Google Patents.
US3925322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anaerobic curable compositions
Assignee: Toagosei Co Ltd
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Filing: 1974-01-04
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Granted: 1975-12-09
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Expires: 1994-01-04
Abstract
Abstract An anaerobic curable composition useful as a sealant or adhesive comprises a hydroperoxide, a 1,1-dialkylhydrazine, a polyesterpolyacrylate and/or polyesterpolymethacrylate or an anaerobic monomer mixture containing the acrylate or methacrylate.
Inventors
- 👤 Kishiro Azuma
- 👤 Isao Tsuji
- 👤 Hiroyuki Kato
- 👤 Hidemaro Tatemichi
- 👤 Akira Motegi
- 👤 Osamu Suzuki
- 👤 Kishichiro Kondo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:53
CPC Classifications
C; C08; C08F; C08F283/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
70 words
AN ANAEROBIC CURABLE COMPOSITION COMPRISING A HYDROPEROXIDE IN THE MOUNT 0.01-5% BY WEIGHT BASED ON SAID COMPOSITION, A 1,1-DIALKYLHYDRAZINE OR ITS ACID SALT IN THE AMOUNT 0.001-5% BY WEIGHT BASED ON SAID COMPOSITION, THE ALKALY GROUPS MAKING UP SAID DIALKYLHYDRAZINE GEING A C1-C4 ALKYL, AND THE REMAINDER OF SAID COMPOSITION COMPRISING ESSENTIALLY A POLYESTERPOLYACRYLATE AND/OR A POLYESTERPOLYMETHACRYLATE OR AN ANAEROBIC CURABLE MONOMER MIXTURE CONTAINING SAID POLYESTERPOLYACRYLATE AND OR SAID POLYESTERPOLYMETHACRYLATE.
Claim 2
Dependent Claim
70 words
AN ANAEROBIC CURABLE COMPOSITION COMPRISING A HYDROPEROXIDE IN THE MOUNT 0.01-5% BY WEIGHT BASED ON SAID COMPOSITION, A 1,1-DIALKYLHYDRAZINE OR ITS ACID SALT IN THE AMOUNT 0.001-5% BY WEIGHT BASED ON SAID COMPOSITION, THE ALKALY GROUPS MAKING UP SAID DIALKYLHYDRAZINE GEING A C1-C4 ALKYL, AND THE REMAINDER OF SAID COMPOSITION COMPRISING ESSENTIALLY A POLYESTERPOLYACRYLATE AND/OR A POLYESTERPOLYMETHACRYLATE OR AN ANAEROBIC CURABLE MONOMER MIXTURE CONTAINING SAID POLYESTERPOLYACRYLATE AND OR SAID POLYESTERPOLYMETHACRYLATE.
Claim 3
Dependent Claim
42 words
An anaerobic curable composition according to claim 1 in which a polymerization inhibitor and/or stabilizer selected from the class of hydroquinone, hydroquinone monomethylether, t-butylcatechol, 2,5-dihydroxy-p-quinone, oxalic acid, ethylenediamine tetraacetate and copper salts is added in an amount of less than 300 ppm.
Claim 4
Dependent Claim
28 words
An anaerobic curable composition according to claim 1 in which the hydroperoxide is selected from the group consisting of t-butylhydroperoxide, cumene hydroperoxide, diisopropylbenzene hydroperoxide, p-menthane hydRoperoxide, and 2,5-dimethylhexane-2,5-dihydroperoxide.
Claim 5
Dependent Claim
28 words
An anaerobic curable composition according to claim 1 in which the salt of 1,1-dialkylhydrazine is a member selected from the group consisting of hydrochloride, sulfate, phosphate and oxalate.
Claim 6
Dependent Claim
14 words
An anaerobic curable composition according to claim 1 in which the 1,1-dialkylhydrazine is 1,1-dimethylhydrazine.
Claim 7
Dependent Claim
35 words
An anaerobic curable composition according to claim 1 in which the polybasic acid component of the polyesterpolyacrylate and/or polyesterpolymethacrylate is selected from the group consisting of phthalic acid, tetrahydrophthalic acid, adipic acid and trimellitic acid.
Claim 8
Dependent Claim
44 words
An anaerobic curable composition according to claim 1 in which the polyol component of the polyesterpolyacrylate and/or the polyesterpolymethacrylate is selected from the group consisting of ethyleneglycol, propylene glycol, 1,3-butanediol, diethylene glycol, triethylene glycol, tetraethylene glycol, neopentyl glycol, trimethylol propane, trimethylol ethane, and pentaerythritol.
Claim 9
Dependent Claim
23 words
An anaerobic curable composition according to claim 1 in which the concentration of the polyesterpolyacrylate and/or polyesterpolymethacrylate is at least 30% by weight.
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) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |