US4396754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rapid curing epoxy compositions
Assignee: Resolution Performance Products LLC
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Filing: 1981-12-14
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Granted: 1983-08-02
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Expires: 2001-12-14
Abstract
Abstract The present invention provides a curable composition comprising (1) at least one epoxy compound containing at least one vicinal-epoxy group and (2) at least one catalyst selected from lithium or Group II metal salts of a non-nucleophilic acid. The present invention further provides an active epoxy curing catalyst composition.
Inventors
- 👤 Thomas F. Brownscombe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:08
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
33 words
A curable composition consisting essentially of ( 1) at least one epoxy compound containing at least one vicinal epoxy group and (2) a curing amount of a lithium salt of a nonnucleophilic acid.
Claim 2
Dependent Claim
33 words
A curable composition consisting essentially of ( 1) at least one epoxy compound containing at least one vicinal epoxy group and (2) a curing amount of a lithium salt of a nonnucleophilic acid.
Claim 3
Dependent Claim
17 words
The composition of claim 1 wherein the epoxy compound is a glycidyl polyether of a polyhydric phenol.
Claim 4
Dependent Claim
11 words
The composition of claim 2 wherein the polyhydric phenol is 2,2-bis(4-hydroxyphenyl)propane.
Claim 5
Dependent Claim
16 words
The composition of claim 1 wherein the lithium salt is LiBF 4 or LiPF 6 .
References Cited (Backward Citations)
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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) | 1986-08-01 | 1987-01-31 | 1987-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-01 | 1991-01-31 | 1991-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-01 | 1995-01-31 | 1995-08-02 | $7700.00 | Window Closed / Lapsed |