Patent US3271350A successfully refreshed from Google Patents.
US3271350A
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US
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Epoxy resin composition compristing (1) partial reaction product of epoxy resin and guanamine and (2) unreacted epoxy resin
Assignee: General Mills Inc
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Filing: 1963-05-28
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Granted: 1966-09-06
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Expires: 1983-05-28
Abstract
No abstract record available.
Inventors
- 👤 Leonard R Vertnik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:49
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5046; C08G59/5053; C08G59/508; C08G59/5086; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2971; Y10T428/31504; Y10T428/31511; Y10T428/31525
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
121 words
THE PROCESS OF PREPARING A CURABLE COMPOSITION FROM AT LEAST LEAST ONE EPOXY RESIN HAVING TERMINAL EPOXIDE GROUPS AND AN EPOXY EQUIVALENT WEIGHT OF FROM ABOUT 140 TO ABOUT 2000 AND A SUFFICIENT AMOUNT OF A GUANAMINE TO CURE SAID EPOXY RESIN TO AN INFUSIBLE AND INSOLUBLE POLYMER, THE WEIGHT RATIO OF THE GUANAMINE TO THE EPOXY RESIN BEING IN THE RANGE OF ABOUT 5:95 TO 75:25, COMPRISING (I) REACTING ABOUT 50 TO 95% BY WEIGHT OF THE EPOXY RESIN WITH THE GUANAMINE, (II) TERMINATING THE REACTION WHEN ABOUT 5 TO 90% COMPLETE AND (III) ADDING THE REMAINING 5 TO 50% BY WEIGHT OF THE EPOXY RESIN TO THE PARTIAL REACTION PRODUCT, SAID GUANAMINE BEING SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
121 words
THE PROCESS OF PREPARING A CURABLE COMPOSITION FROM AT LEAST LEAST ONE EPOXY RESIN HAVING TERMINAL EPOXIDE GROUPS AND AN EPOXY EQUIVALENT WEIGHT OF FROM ABOUT 140 TO ABOUT 2000 AND A SUFFICIENT AMOUNT OF A GUANAMINE TO CURE SAID EPOXY RESIN TO AN INFUSIBLE AND INSOLUBLE POLYMER, THE WEIGHT RATIO OF THE GUANAMINE TO THE EPOXY RESIN BEING IN THE RANGE OF ABOUT 5:95 TO 75:25, COMPRISING (I) REACTING ABOUT 50 TO 95% BY WEIGHT OF THE EPOXY RESIN WITH THE GUANAMINE, (II) TERMINATING THE REACTION WHEN ABOUT 5 TO 90% COMPLETE AND (III) ADDING THE REMAINING 5 TO 50% BY WEIGHT OF THE EPOXY RESIN TO THE PARTIAL REACTION PRODUCT, SAID GUANAMINE BEING SELECTED FROM THE GROUP CONSISTING OF
Claim 3
Dependent Claim
10 words
THE CURABLE COMPOSITION PREPARED BY THE PROCESS OF CLAIM 1.
Claim 4
Dependent Claim
10 words
A SOLVENT SOLUTION OF THE CURRABLE COMPOSITION OF CLAIM 12.
Claim 5
Dependent Claim
28 words
THE SOLUTION OF CLAIM 19 WHEREIN THE SOLVENT IS SELECTED FROM THE GROUP CONSISTING OF ALKYL ETHERS OF ETHYLENE GLYCOL, METHYL ETHYL ETONE, ACETONE, TRICHLOROETHYLENE AND MIXTURES THEREOF.
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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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |