US3923737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anaerobic adhesives
Assignee: GCP Products UK Ltd
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Filing: 1973-03-15
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Granted: 1975-12-02
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Expires: 1993-03-15
Abstract
Abstract Anaerobically curable compositions comprising a polymerisable polyalkoxy acrylate ester in which the alcohol moiety contains an aromatic group, together with a hydroperoxide as a latent polymerisation catalyst.
Inventors
- 👤 Harold M George
- 👤 Keith Hargreaves
- 👤 Paul Wainwright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:44
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/20; C08F222/00; C08F222/10; C08F222/1006; C08F222/102; C09; C09J; C09J4/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
90 words
A LIQUID ANAEROBICALLY CURABLE COMPOSITION COMPRISING: A POLYMERIZABLE ACRYLATE ESTER MONOMER SELECTED FROM THE GROUP CONSISTING OF DI-ACRYLATE AND DI-METHACRYLATE ESTERS OF AN ALKOXYLATED MEMBER SELECTED FROM THE GROUP CONSISTING OF ETHOXYLATED BISPHENOL A, PROPOXYLAED BISPHENOL A, ETHOXYLATED BISPHENOL C AND PROPOXYLATED BISPHENOL C; P-MENTHANE HYDROPEROXIDE IN AN AMOUNT SUFFICIENT TO INITIATE POLYMERIZATION OF SAID MONOMER; 2-AMINO PYRIDINE IN AN AMOUNT SUFFICIENT TO ACCELERATE POLYMERIZATION OF SAID MONOMER, THE AMOUNTS OF SAID INITIATOR AND ACCLERATOR BEING SUCH THAT THE COMPOSITION IS STABLE IN AIR BUT SETS WHEN EXCLUDED FROM AIR.
Claim 2
Dependent Claim
90 words
A LIQUID ANAEROBICALLY CURABLE COMPOSITION COMPRISING: A POLYMERIZABLE ACRYLATE ESTER MONOMER SELECTED FROM THE GROUP CONSISTING OF DI-ACRYLATE AND DI-METHACRYLATE ESTERS OF AN ALKOXYLATED MEMBER SELECTED FROM THE GROUP CONSISTING OF ETHOXYLATED BISPHENOL A, PROPOXYLAED BISPHENOL A, ETHOXYLATED BISPHENOL C AND PROPOXYLATED BISPHENOL C; P-MENTHANE HYDROPEROXIDE IN AN AMOUNT SUFFICIENT TO INITIATE POLYMERIZATION OF SAID MONOMER; 2-AMINO PYRIDINE IN AN AMOUNT SUFFICIENT TO ACCELERATE POLYMERIZATION OF SAID MONOMER, THE AMOUNTS OF SAID INITIATOR AND ACCLERATOR BEING SUCH THAT THE COMPOSITION IS STABLE IN AIR BUT SETS WHEN EXCLUDED FROM AIR.
Claim 3
Dependent Claim
50 words
A composition according to claim 1 wherein the monomer is present in an amount of from 85 to 95 parts, the initiator is present in an amount of from 4 to 10 parts and the accelerator is present in an amount of 1 to 5 parts based on the monomer.
Claim 4
Dependent Claim
14 words
A composition according to claim 1 wherein the stabilizer is present and comprises p-benzoquinone.
Claim 5
Dependent Claim
14 words
A composition according to claim 1 wherein the monomer comprises ethoxylated bisphenol A dimethacrylate.
Claim 6
Dependent Claim
15 words
A composition according to claim 1 including 5 To 1,000 ppm of a quinone stabilizer.
Claim 7
Dependent Claim
15 words
A composition according to claim 2 including 5 to 1,000 ppm of a quinone stabilizer.
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) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |