US3580796A
Expired / Lapsed
US
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Glass laminated by an adhesive comprising the polyurethane resulting from the reaction of bis (2-isocyanatoethyl) fumarate with polyols without other isocyanate
Assignee: EIDP Inc
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Filing: 1967-03-16
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Granted: 1971-05-25
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Expires: 1987-03-16
Abstract
Abstract A COMPOSITE ARTICLE IS PREPARED BY (A) PROVIDING A LIQUID POLYURETHANE BY REACTING BIS (2-ISOCYANATOETHYL) FUMARATE WITH A POLYMERIC POLYOL COMPONENT WHICH PREFERABLY COMPRISES A TRIOL OBTAINED FROM PROPYLENE OXIDE AND 1,2,6-HEXANETRIOL, AND (B) USING SAID POLYURETHANE TO COAT A LAYER OF GLASS OR ACRYLIC PLASTIC OR TO BOND SAID LAYER (E.G., A WINDSHIELD) TO ANOTHER LAYER OF SOLID MATERIAL (E.G., AN AUTO BODY) WITH A CURED BOND WHICH IS HIGHLY RESISTANT TO ADHESIVE FAILURE WHEN THE ARTICLE IS EXPOSED TO SUNLIGHT AND OUTDOOR WEATHER FOR EXTENDED PERIODS OF TIME.
Inventors
- 👤 Robert M Hick Jr
- 👤 Joseph C Gould
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:55
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/81; C08G18/8125; B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10009; B32B17/10018; B32B17/10036; B32B17/10165; B32B17/10366; B32B17/1055; B32B17/1077; C09; C09J; C09J175/00; C09J175/04; C08L; C08L2666/00; C08L2666/54; Y; Y10; Y10S; Y10S528/00; Y10S528/905; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31558; Y10T428/31573; Y10T428/31591; Y10T428/31598; Y10T428/31601; Y10T428/31605; Y10T428/31609; Y10T428/31612
Claims Analysis
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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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |