Patent US4728384A successfully refreshed from Google Patents.
US4728384A
Expired / Lapsed
US
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Two component epoxy structural adhesives with improved flexibility
Assignee: Ashland LLC
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Filing: 1986-06-23
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Granted: 1988-03-01
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Expires: 2006-06-23
Abstract
Abstract The process for preparing an adhesive composition comprising mixing (a) an epoxy resin component composed of an epoxy resin and the partial reaction product of a polyepoxide with a phenolic compound, with (b) a hardener component composed of a primary and secondary amine containing polyamine or a poly amido-amine and a tertiary amine containing epoxy curing catalyst is described.
Inventors
- 👤 Anil B. Goel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:41
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/1444; C08G59/18; C08G59/40; C08G59/50; C08G59/56; C09; C09J; C09J163/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
66 words
A process for preparing an improved epoxy adhesive composition comprising mixing (a) an epoxy resin component containing a polyepoxide resin having more than one group of the formula ##STR2## and the partial reaction product of a polyepoxide with phenol, with (b) a hardener component composed of either a primary and secondary amine containing polyamine or a poly amido-amine, and a tertiary amine containing epoxy curing catalyst.
Claim 2
Dependent Claim
66 words
A process for preparing an improved epoxy adhesive composition comprising mixing (a) an epoxy resin component containing a polyepoxide resin having more than one group of the formula ##STR2## and the partial reaction product of a polyepoxide with phenol, with (b) a hardener component composed of either a primary and secondary amine containing polyamine or a poly amido-amine, and a tertiary amine containing epoxy curing catalyst.
Claim 3
Dependent Claim
25 words
The process of claim 1 wherein the partial reaction product in (a) is made from 0.02 to 0.4 equivalents of phenol per equivalent of polyepoxide.
Claim 4
Dependent Claim
36 words
The process of claim 2 wherein the polyamine of (b) is poly(propylene oxide) di- or tri-primary amine of molecular weight ranging from 200-10,000 or one selected from the group consisting of ethylene diamine and aminoethyl piperazine.
Claim 5
Dependent Claim
22 words
The process of claim 3 wherein the reaction product in (a) is made from a liquid diglycidyl ether of Bis-phenol-A and phenol.
Claim 6
Dependent Claim
30 words
The process of claim 3 wherein the amount of epoxy curing catalyst used is in the range of from 1-10% be weight based on the weight of the hardener component.
Claim 7
Dependent Claim
10 words
The adhesive composition made by the process of claim 1.
Claim 8
Dependent Claim
43 words
The process for adhering two or more SMC surfaces to each other comprising placing the adhesive composition of claim 1 between said surfaces and curing the resulting material at a temperature in the range of from about 25° C. to about 200° 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) | 1991-03-01 | 1991-08-31 | 1992-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-01 | 1995-08-31 | 1996-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-01 | 1999-08-31 | 2000-03-01 | $7700.00 | Window Closed / Lapsed |