US3320187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy resin foaming process
Assignee: Individual
•
Filing: 1962-06-27
•
Granted: 1967-05-16
•
Expires: 1982-06-27
Abstract
No abstract record available.
Inventors
- 👤 Samuel L Burt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:28
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/02; C08J2363/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
THE PROCESS FOR MAKING, STABLE, FOAMED-IN-PLACE RESINS WHICH COMPRISES: (A) MIXING A LIQUID EPOXY PHENOLIC ETHER RESIN WITH AN ORGANIC AMINE CURING AGENT FOR SAID RESIN AND AN AMINE CARBAMATE SALT THEREBY FORMING A MIXTURE, SAID SALT BEING THE REACTION PRODUCT OF AN ORGANIC AMINE THAT IS A CURING AGENT FOR SAID RESIN WITH CARBON DIOXIDE, SAID MIXTURE COMPRISING A RATIO OF 1 TO 5 PARTS BY WEIGHT OF AMINE CURING AGENT AND 5 TO 15 PARTS BY WEIGHT OF AMINE CARBAMATE SALT FOR EVERY 100 PARTS BY WEIGHT OF SAID RESIN; (B) ELEVATING THE TEMPERATURE OF SAID MIXTURE TO THE DECOMPOSITION TEMPERATURE OF SAID SALT AND THEREAFTER ALLOWING THE CARBON DIOXIDE EVOLVED BY SAID DECOMPOSITION TO EXPAND SAID RESIN WHILE SAID ORGANIC AMINE SIMULTANEOUSLY RELEASED BY SAID DECOMPOSITION COMPLETES THE CURE OF SAID RESIN.
Claim 2
Dependent Claim
135 words
THE PROCESS FOR MAKING, STABLE, FOAMED-IN-PLACE RESINS WHICH COMPRISES: (A) MIXING A LIQUID EPOXY PHENOLIC ETHER RESIN WITH AN ORGANIC AMINE CURING AGENT FOR SAID RESIN AND AN AMINE CARBAMATE SALT THEREBY FORMING A MIXTURE, SAID SALT BEING THE REACTION PRODUCT OF AN ORGANIC AMINE THAT IS A CURING AGENT FOR SAID RESIN WITH CARBON DIOXIDE, SAID MIXTURE COMPRISING A RATIO OF 1 TO 5 PARTS BY WEIGHT OF AMINE CURING AGENT AND 5 TO 15 PARTS BY WEIGHT OF AMINE CARBAMATE SALT FOR EVERY 100 PARTS BY WEIGHT OF SAID RESIN; (B) ELEVATING THE TEMPERATURE OF SAID MIXTURE TO THE DECOMPOSITION TEMPERATURE OF SAID SALT AND THEREAFTER ALLOWING THE CARBON DIOXIDE EVOLVED BY SAID DECOMPOSITION TO EXPAND SAID RESIN WHILE SAID ORGANIC AMINE SIMULTANEOUSLY RELEASED BY SAID DECOMPOSITION COMPLETES THE CURE OF SAID RESIN.
References Cited (Backward Citations)
US2739134A
Cited
US2831820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |