US3240376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyglycidyl ether of a bisphenol and triglycidyl ether of polyoxyalkylated glycerol in tv tube face laminate
Assignee: Dow Chemical Co
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Filing: 1961-07-28
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Granted: 1966-03-15
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Expires: 1981-07-28
Abstract
No abstract record available.
Inventors
- 👤 John C Smith
- 👤 Wilbur E Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:14
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/32; C08G59/38; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31518
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
138 words
AN EPOXY RESIN COMPOSITION ADAPTED TO BEING CURED TO A THERMOSET RESIN BY SUBSEQUENTLY ADMIXING THEREWITH A CURING AGENT CONTAINING A FUNCTIONAL GROUP CAPABLE OF EFFECTING CROSS-LINKING OF OXIRANE GROUP PRESENT IN SAID RESIN COMPOSITION CONSISTING OF (1) THE TRIEPOXIDE ETHER OF A GLYCEROL-POLYOXYALKYLENE GLYCOL ADDUCT HAVING AN EPOXIDE EQUIVALENT WEIGHT OF BETWEEN ABOUT 87 AND ABOUT 1,000 IN AN AMOUNT BY WEIGHT OF BETWEEN ABOUT 2 AND ABOUT 50 PERCENT OF SAID COMPOSITION, (2) A DIEPOXIDE ETHER OF A POLYOXYALKYLENE GLYCOL HAVING AN EPOXIDE EQUIVALENT WEIGHT OF BETWEEN ABOUT 84 AND ABOUT 700 IN AN AMOUNT UP TO ABOUT 75 PERCENT BY WEIGHT OF SAID COMPOSITION AND (3) A DIEPOXIDE ETHER OF 4,4''-ISOPROPYLIDENEDIPHENOL HAVING AN EPOXIDE EQUIVALENT WEIGHT OF BETWEEN ABOUT 174 AND ABOUT 1,000 IN AMOUNT UP TO ABOUT 60 PERCENT BY WEIGHT OF SAID COMPOSITION.
Claim 2
Dependent Claim
138 words
AN EPOXY RESIN COMPOSITION ADAPTED TO BEING CURED TO A THERMOSET RESIN BY SUBSEQUENTLY ADMIXING THEREWITH A CURING AGENT CONTAINING A FUNCTIONAL GROUP CAPABLE OF EFFECTING CROSS-LINKING OF OXIRANE GROUP PRESENT IN SAID RESIN COMPOSITION CONSISTING OF (1) THE TRIEPOXIDE ETHER OF A GLYCEROL-POLYOXYALKYLENE GLYCOL ADDUCT HAVING AN EPOXIDE EQUIVALENT WEIGHT OF BETWEEN ABOUT 87 AND ABOUT 1,000 IN AN AMOUNT BY WEIGHT OF BETWEEN ABOUT 2 AND ABOUT 50 PERCENT OF SAID COMPOSITION, (2) A DIEPOXIDE ETHER OF A POLYOXYALKYLENE GLYCOL HAVING AN EPOXIDE EQUIVALENT WEIGHT OF BETWEEN ABOUT 84 AND ABOUT 700 IN AN AMOUNT UP TO ABOUT 75 PERCENT BY WEIGHT OF SAID COMPOSITION AND (3) A DIEPOXIDE ETHER OF 4,4''-ISOPROPYLIDENEDIPHENOL HAVING AN EPOXIDE EQUIVALENT WEIGHT OF BETWEEN ABOUT 174 AND ABOUT 1,000 IN AMOUNT UP TO ABOUT 60 PERCENT BY WEIGHT OF SAID COMPOSITION.
Claim 3
Dependent Claim
48 words
AN ELASTOMERIC RESIN POSSESSING HIGH CLARITY AND FLEXURAL PROPERTIES CONSISTING OF THE REACTION PRODUCT OF CLAIM 1 AND A CURING AGENT SELECTED FROMTHE CLASS CONSISTING OF PRIMARY AMINES, SECONDARY AMINES, ALKANOL AMINES, POLYGLYCOL AMINS, POLYALKYLENE AMINES, MIXTURES OF SAID AMINES, DICARBOXYLIC ACIDS AND ANHYDRIDES THEREOF, AND LEWIS ACIDS.
Claim 4
Dependent Claim
55 words
IN A TELEVISION PICTURE TUBE A PROTECTIVE SHATTERPROOF SAFETY SHIELD INTEGRALLY SECURED TO THE OUTER SURFACE OF THE VIEWING FACE THEREOF, CONSISTING OF A GLASS PLATE HAVING THE CONTOUR OF SID FACE AND BEING MAINTAINED IN A SUBSTANTIALLY UNIFORMLY SPACED-APART POSITION FROM SAID FACE BY A CONTINUOUS FILM OF THE ELASTOMERIC RESIN OF CLAIM 2.
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) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |