US3907731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amine curable polyepoxide compositions
Assignee: Aearo Technologies LLC
•
Filing: 1973-03-05
•
Granted: 1975-09-23
•
Expires: 1993-03-05
Abstract
Abstract Amine curable epoxy potting compositions are disclosed which, in the cured state, have excellent impact or vibration absorbing properties and which are sufficiently friable as to be readily mechanically removed from a component potted therewith. The curable compositions of the invention comprise two particular genera of epoxy resins and a particular genus of surfactant modifier.
Inventors
- 👤 Jr Ross Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:51
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/226; C08L; C08L63/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
122 words
AN EPOXY POTTING COMPOSITION COMPRISING: A. BETWEEN ABOUT 26 AND ABOUT 40 PARTS BY WEIGHT OF A DIHYDRIC PHENOL/EPIHALOHYDRIN POLYEPOXIDE HAVING A MELTING POINT OF LESS THAN ABOUT 50*C AND A W.P.E. VALUE OF BETWEEN ABOUT 175 AND ABOUT 280, B. BETWEEN ABOUT 54 AND ABOUT 80 PARTS BY WEIGHT OF A FLEXIBILIZED POLYEPOXIDE COMPOSITION HAVING A MELTING POINT OF BELOW ABOUT 50*C AND A W.P.E. VALUE OF BETWEEN ABOUT 325 AND ABOUT 750, SAID POLYEPOXIDE COMPOSITION COMPRISING A DIHYDRIC PHENOL/EPIHALOHYDRIN POLYEPOXIDE CONTAINING BETWEEN ABOUT 15 AND ABOUT 30 PERCENT BY WEIGHT THEREOF OF AN INTERNAL REACTIVE PLASTICIZER, C. BETWEEN ABOUT 46 AND ABOUT 70 PARTS BY WEIGHT OF AN ESSENTIALLY WATER INSOLUBLE ALKYLPHENOL/ETHYLENE OXIDE REACTION PRODUCT CONFORMING TO THE GENERAL FORMULA
Claim 2
Dependent Claim
122 words
AN EPOXY POTTING COMPOSITION COMPRISING: A. BETWEEN ABOUT 26 AND ABOUT 40 PARTS BY WEIGHT OF A DIHYDRIC PHENOL/EPIHALOHYDRIN POLYEPOXIDE HAVING A MELTING POINT OF LESS THAN ABOUT 50*C AND A W.P.E. VALUE OF BETWEEN ABOUT 175 AND ABOUT 280, B. BETWEEN ABOUT 54 AND ABOUT 80 PARTS BY WEIGHT OF A FLEXIBILIZED POLYEPOXIDE COMPOSITION HAVING A MELTING POINT OF BELOW ABOUT 50*C AND A W.P.E. VALUE OF BETWEEN ABOUT 325 AND ABOUT 750, SAID POLYEPOXIDE COMPOSITION COMPRISING A DIHYDRIC PHENOL/EPIHALOHYDRIN POLYEPOXIDE CONTAINING BETWEEN ABOUT 15 AND ABOUT 30 PERCENT BY WEIGHT THEREOF OF AN INTERNAL REACTIVE PLASTICIZER, C. BETWEEN ABOUT 46 AND ABOUT 70 PARTS BY WEIGHT OF AN ESSENTIALLY WATER INSOLUBLE ALKYLPHENOL/ETHYLENE OXIDE REACTION PRODUCT CONFORMING TO THE GENERAL FORMULA
Claim 3
Dependent Claim
43 words
The composition of claim 1 wherein the amount of (A) is between 29 and 37 parts by weight; the amount of (B) is between 60 and 74 parts by weight; and the amount of (C) is between 52 and 65 parts by weight.
Claim 4
Dependent Claim
19 words
The composition of claim 1 wherein the polyepoxide of (A) is a product of reaction of bisphenol-A and epichlorohydrin.
Claim 5
Dependent Claim
19 words
The composition of claim 1 wherein the polyepoxide of (B) has a W.P.E. value of between 350 and 550.
Claim 6
Dependent Claim
19 words
The composition of claim 1 wherein the internal reactive plasticizer of the polyepoxide of (B) is a polyglycol diepoxide.
Claim 7
Dependent Claim
27 words
The composition of claim 1 wherein the internal reactive plasticizer of the polyepoxide of (B) is an ester type epoxide of a dimerized or trimerized fatty acid.
Claim 8
Dependent Claim
16 words
The composition of claim 1 wherein (C) is a reaction product of p-nonylphenol and ethylene oxide.
Claim 9
Dependent Claim
14 words
The composition of claim 1 wherein, in (C), each alkyl group in the formula
Claim 10
Dependent Claim
19 words
The composition of claim 1 wherein each of the polyepoxides of (A) and (B) is a liquid at 20*C.
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) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |