US3790423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of bonding using a polyamide resin
Assignee: Phillips Petroleum Co
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Filing: 1971-11-22
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Granted: 1974-02-05
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Expires: 1991-11-22
Abstract
Abstract Polyamides, useful as hot-melt adhesives, are prepared by condensing: (a) mixtures of at least two reaction products selected from the group consisting of the reaction product of a diamine and isophthalic acid, the reaction product of a diamine and terephthalic acid, and the reaction product of a diamine and a mixture of isophthalic acid and terephthalic acid or (b) the reaction product of a diamine and a mixture of isophthalic acid and terephthalic acid.
Inventors
- 👤 F Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:14
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/265; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
30 words
A process in accord with claim 1 wherein at least 58 percent of said lap shear strength is retained after immersion of the laminate in boiling water for 24 hours.
Claim 2
Dependent Claim
22 words
A process in accord with claim 1 wherein said surfaces are selected from the class consisting of plastic, wood, metal and ceramics.
Claim 3
Dependent Claim
12 words
A process in accord with claim 1 wherein said surfaces are aluminum.
Claim 4
Dependent Claim
18 words
A process in accord with claim 1 wherein said ratio is in the range of 90:10 to 50:50.
Claim 5
Dependent Claim
35 words
A process in accord with claim 1 wherein said polycondensation product is the condensation product of (a) the reaction product of 1,12-dodecane-diamine and isophthalic acid, and (b) the reaction product of 1,12-Dodecane-diamine and terephthalic acid.
Claim 6
Dependent Claim
30 words
A process in accord with claim 1 wherein said polycondensation product is the condensation product of the reaction product of 1,12-dodecane-diamine and a mixture of isophthalic acid and terephthalic acid.
Claim 7
Dependent Claim
25 words
A process in accord with claim 1 wherein said bonding conditions comprise a temperature in the range of about 150* C to about 300* C.
Claim 8
Dependent Claim
25 words
A process in accord with claim 6 wherein said surfaces are aluminum, and wherein said ratio is in the range of 90:10 to 50: 50.
References Cited (Backward Citations)
US2252554A
Cited
US3475387A
Cited
US3379695A
Cited
US3496002A
Cited
US3492368A
Cited
US3696074A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |