Patent US4837260A successfully refreshed from Google Patents.
US4837260A
Expired / Lapsed
US
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Cyanoacrylate compositions
Assignee: Toagosei Co Ltd
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Filing: 1987-05-12
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Granted: 1989-06-06
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Expires: 2007-05-12
Abstract
Abstract A cyanoacrylate composition suitable as cyanoacrylate adhesives for bonding porous materials, shaping material and fingerprint detectors comprises a 2-cyanoacrylate as a main component and at least one of crown ethers, polyalkylene oxides and derivatives of the polyalkylene oxides as a curing accelerator and at least one of hydrophobic silicas.
Inventors
- 👤 Mitsuyoshi Sato
- 👤 Takumi Okamura
- 👤 Kaoru Kimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:35
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/117; A61B5/1171; A61B5/1172; C; C08; C08F; C08F22/00; C08F22/30; C08F22/32
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
33 words
A cyanoacrylate composition which comprises a 2-cyanoacrylate as a main component and at least one of (A) crown ethers, polyalkylene oxides and polyalkylene oxide derivatives and at least one of (B) hydrophobic silicas.
Claim 2
Dependent Claim
33 words
A cyanoacrylate composition which comprises a 2-cyanoacrylate as a main component and at least one of (A) crown ethers, polyalkylene oxides and polyalkylene oxide derivatives and at least one of (B) hydrophobic silicas.
Claim 3
Dependent Claim
18 words
A composition according to claim 1 wherein the crown ethers are macrocyclic polyethers where the heteroatoms are oxygen.
Claim 4
Dependent Claim
18 words
A composition according to claim 1 wherein the polyalkylene oxides have a polymerization degree of at least 2.
Claim 5
Dependent Claim
16 words
A composition according to claim 3 wherein the polyalkylene oxides have a molecular weight of 400-1,000,000.
Claim 6
Dependent Claim
18 words
A composition according to claim 1 wherein the alkylene group of the polyalkylene oxide has 2-6 carbon atoms.
Claim 7
Dependent Claim
19 words
A composition according to claim 5 wherein said alkylene group is ethylene, propylene, isopropylene, tetramethylene or a combination thereof.
Claim 8
Dependent Claim
17 words
A composition according to claim 5 wherein said alkylene group is propylene, tetramethylene or a combination thereof.
Claim 9
Dependent Claim
25 words
A composition according to claim 1 wherein the polyalkylene oxide derivatives are esters of the polyalkylene oxide with acids or ethers with hydroxyl group-containing compounds.
Claim 10
Dependent Claim
38 words
A composition according to claim 1 wherein the hydrophobic silicas are those obtained by converting the surface of a hydrophilic silica to a hydrophobic surface by treating the surface of the hydrophilic silica with a surface treating agent.
Claim 11
Dependent Claim
16 words
A composition according to claim 7 wherein the hydrophilic silica is fumed silica or wet silica.
Claim 12
Dependent Claim
19 words
A composition according to claim 9 wherein the surface treating agent is a dimethylsilylating agent or a trimethylsilylating agent.
Claim 13
Dependent Claim
24 words
A composition according to claim 1 wherein the amount of component (A) is 0.0001-20 parts by weight for 100 parts by weight of 2-cyanoacrylate.
Claim 14
Dependent Claim
19 words
A composition according to claim 1 wherein the amount of component (B) is 1-30% by weight of the composition.
Claim 15
Dependent Claim
10 words
A cyanoacrylate adhesive which comprises the composition of claim 1.
Claim 16
Dependent Claim
22 words
A cyanoacrylate composition according to claim 12 which additionally contains an anionic polymerization inhibitor, a radical polymerization inhibitor and a thickening agent.
Claim 17
Dependent Claim
12 words
A composition for shaping materials which comprises the composition of claim 1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-05 | 1992-12-05 | 1993-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-05 | 1996-12-05 | 1997-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-05 | 2000-12-05 | 2001-06-06 | $7700.00 | Window Closed / Lapsed |