US2682515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive composition containing polyepoxide materials
Assignee: Shell Development Co
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Filing: 1952-07-05
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Granted: 1954-06-29
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Expires: 1972-07-05
Abstract
No abstract record available.
Inventors
- 👤 Naps Marguerite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:13
CPC Classifications
C; C09; C09J; C09J163/00; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/226; C08G59/32; C08G59/38; C08K; C08K3/00; C08K3/34; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1515; C08L; C08L2666/00; C08L2666/54; Y; Y10; Y10S; Y10S238/00; Y10S238/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A COMPOSITION OF MATTER COMPRISING (1) A FIRST GLYCIDYL POLYETHER OF A DIHYDRIC PHENOL IN ADMIXTURE WITH ABOUT AN ADDED 3% TO 20% BY WEIGHT OF (2) A SECOND GLYCIDYL POLYETHER OF A DIHYDRIC PHENOL AND (3) A LIQUID ALIPHATIC POLYEPOXIDE HAVING A VISCOSITY OF LESS THAN ABOUT 500 CENTIPOISES AT 25* C., SAID POLYETHERS HAVING A CHAIN OF ALTERNATING GLYCERYL AND DIVALENTT AROMATIC RADICALS UNITED BY ETHER OXYGEN WITH GLYCERYL RADICALS INTERMINAL POSITION, AND SAID FIRST GLYCIDYL POLYETHER HAVING A DURRANS'' MERCURY METHOD MELTING POINT BELOW 30* C., HAVING A 1,2-EPOXY EQUIVALENCY BETWEEN 1.6 AND 2.0 AND CONTAINING 1 TO 1.5 OF THE AROMATIC RADICALS IN THE AVERAGE MOLECULE THEREOF, AND SAID SECOND GLYCIDYL POLYETHER HAVING A DURRANS'' MERCURY METHOD MELTING POINT ABOVE 75* C., HAVING A 1,2-EPOXY EQUIVALENCY OF 1.2 TO 1.8, AND CONTAINING AT LEAST FOUR OF THE AROMATIC RADICALS IN THE AVERAGE MOLECULE THEREOF.
Claim 2
Dependent Claim
148 words
A COMPOSITION OF MATTER COMPRISING (1) A FIRST GLYCIDYL POLYETHER OF A DIHYDRIC PHENOL IN ADMIXTURE WITH ABOUT AN ADDED 3% TO 20% BY WEIGHT OF (2) A SECOND GLYCIDYL POLYETHER OF A DIHYDRIC PHENOL AND (3) A LIQUID ALIPHATIC POLYEPOXIDE HAVING A VISCOSITY OF LESS THAN ABOUT 500 CENTIPOISES AT 25* C., SAID POLYETHERS HAVING A CHAIN OF ALTERNATING GLYCERYL AND DIVALENTT AROMATIC RADICALS UNITED BY ETHER OXYGEN WITH GLYCERYL RADICALS INTERMINAL POSITION, AND SAID FIRST GLYCIDYL POLYETHER HAVING A DURRANS'' MERCURY METHOD MELTING POINT BELOW 30* C., HAVING A 1,2-EPOXY EQUIVALENCY BETWEEN 1.6 AND 2.0 AND CONTAINING 1 TO 1.5 OF THE AROMATIC RADICALS IN THE AVERAGE MOLECULE THEREOF, AND SAID SECOND GLYCIDYL POLYETHER HAVING A DURRANS'' MERCURY METHOD MELTING POINT ABOVE 75* C., HAVING A 1,2-EPOXY EQUIVALENCY OF 1.2 TO 1.8, AND CONTAINING AT LEAST FOUR OF THE AROMATIC RADICALS IN THE AVERAGE MOLECULE THEREOF.
References Cited (Backward Citations)
US2575558A
Cited
US2602785A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-28 | 1957-12-28 | 1958-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-28 | 1961-12-28 | 1962-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-28 | 1965-12-28 | 1966-06-29 | $7700.00 | Window Closed / Lapsed |