US4283312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat curable processable epoxy compositions containing aromatic iodonium salt catalyst and copper salt cocatalyst
Assignee: General Electric Co
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Filing: 1979-08-16
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Granted: 1981-08-11
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Expires: 1999-08-16
Abstract
Abstract Aromatic onium salts, such as diaryliodonium salts, have been found to be effective thermal initiators for the polymerization of epoxy resins having a viscosity of up to about 100,000 centipoises at 25° C. when used in combination with copper salts. The processable epoxy resin composition can be used in filament winding and pultrusion applications.
Inventors
- 👤 James V. Crivello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:16
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0016; C08G; C08G59/00; C08G59/18; C08G59/68; C08G63/00; C08G63/78; C08G63/82; C08G63/823; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/08; C08G65/10; C08G65/105; C08G85/00; C08K7/00; C08K7/02; C08K7/04; C08K7/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
138 words
A processable heat curable epoxy resin composition comprising (A) an epoxy resin having a viscosity of from about 100 to 100,000 centipoises at 25° C. (B) an effective amount of an aromatic iodonium salt catalyst of the formula, [(R).sub.a (R.sup.1).sub.b I].sub.c.sup.+ [MQ.sub.d ].sup.-(d-e), and (C) an effective amount of a copper salt cocatalyst, where R is a monovalent aromatic organic radical, R 1 is a divalent aromatic organic radical, M is a metal or metalloid, Q is a halogen radical, a is a whole number equal to 0 or 2, b is a whole number equal to 0 or 1 and the sum of a+b is equal to 1 or 2, c=d-e, e equals the valence of M and is an integer equal to 2-7 inclusive and d>e and is an integer having a value up to 8.
Claim 2
Dependent Claim
138 words
A processable heat curable epoxy resin composition comprising (A) an epoxy resin having a viscosity of from about 100 to 100,000 centipoises at 25° C. (B) an effective amount of an aromatic iodonium salt catalyst of the formula, [(R).sub.a (R.sup.1).sub.b I].sub.c.sup.+ [MQ.sub.d ].sup.-(d-e), and (C) an effective amount of a copper salt cocatalyst, where R is a monovalent aromatic organic radical, R 1 is a divalent aromatic organic radical, M is a metal or metalloid, Q is a halogen radical, a is a whole number equal to 0 or 2, b is a whole number equal to 0 or 1 and the sum of a+b is equal to 1 or 2, c=d-e, e equals the valence of M and is an integer equal to 2-7 inclusive and d>e and is an integer having a value up to 8.
Claim 3
Dependent Claim
9 words
A filament winding composition in accordance with claim 1.
Claim 4
Dependent Claim
8 words
A pultrusion composition in accordance with claim 1.
Claim 5
Dependent Claim
17 words
A composition in accordance with claim 1, where the aromatic iodonium salt is a diphenyliodonium hexafluoro salt.
Claim 6
Dependent Claim
14 words
A composition in accordance with claim 1, where the copper salt is copper stearate.
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) | 1984-08-10 | 1985-02-09 | 1985-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-10 | 1989-02-09 | 1989-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-10 | 1993-02-09 | 1993-08-11 | $7700.00 | Window Closed / Lapsed |