Patent US3714006A successfully refreshed from Google Patents.
US3714006A
Expired / Lapsed
US
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Cyclopentadienylmanganese tricarbonyl compounds as a catalyst for the radiation curing of polyepoxides
Assignee: Individual
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Filing: 1972-05-15
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Granted: 1973-01-30
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Expires: 1992-05-15
Abstract
Abstract The cure of polyepoxide resins with a reactive acid anhydride or polymercaptan curing agent is accelerated in the presence of light and a catalytic amount of a cyclopentadienylmanganese tricarbonyl compound, e.g., methylcyclopentadienylmanganese tricarbonyl.
Inventors
- 👤 W Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:43
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/40; C08G59/66
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
72 words
A process for curing an epoxy composition comprising a polyepoxide resin having a vic-epoxy equivalency greater than one, a curing agent selected from the group consisting of acid anhydrides and polymercaptans and a catalytic amount of a cyclopentadienylmanganese tricarbonyl compound which comprises exposing said composition to electromagnetic radiation wherein the equivalent ratio of curing agent to epoxy groups of the polyepoxide resin is in the range of from about 0.5:1 to 1:0.5.
Claim 2
Dependent Claim
72 words
A process for curing an epoxy composition comprising a polyepoxide resin having a vic-epoxy equivalency greater than one, a curing agent selected from the group consisting of acid anhydrides and polymercaptans and a catalytic amount of a cyclopentadienylmanganese tricarbonyl compound which comprises exposing said composition to electromagnetic radiation wherein the equivalent ratio of curing agent to epoxy groups of the polyepoxide resin is in the range of from about 0.5:1 to 1:0.5.
Claim 3
Dependent Claim
15 words
The process of claim 1 wherein the electromagnetic radiation is in the 1,500-6,000 A. range.
Claim 4
Dependent Claim
17 words
The process of claim 1 wherein the polyepoxide resin is a glycidyl polyether of a polyhydric phenol.
Claim 5
Dependent Claim
10 words
The process of claim 3 wherein the phenol is 2,2-bis(4-hydroxyphenyl)propane.
Claim 6
Dependent Claim
13 words
The process of claim 3 wherein the phenol is a phenol-formaldehyde novolak resin.
Claim 7
Dependent Claim
15 words
The process of claim 3 wherein the curing agent is an aliphatic polycyclic acid anhydride.
Claim 8
Dependent Claim
26 words
The process of claim 6 wherein the mixture is heated simultaneously or subsequent to exposure to electromagnetic radiation at a temperature of about 50* to 250*C.
Claim 9
Dependent Claim
13 words
The process of claim 7 wherein the curing agent is methylbicyclo(2.2.1)heptane-2,3-dicarboxylic acid anhydride.
References Cited (Backward Citations)
US3497488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |