US3673274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric adhesive containing a polyepoxide, a carboxy terminated polybutadiene and a bis-2-oxazoline
Assignee: Dow Chemical Co
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Filing: 1971-03-29
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Granted: 1972-06-27
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Expires: 1991-03-29
Abstract
Abstract Polymeric adhesive compositions comprising essentially stoichiometric amounts of (1) a poly 1,2-epoxyalkyl compound having an average of more than one 1,2-epoxyaliphatic group per molecule, (2) a bis-2-oxazoline or bis-2-oxazine and (3) a carboxyl terminated polybutadiene of the formula WHERE N HAS AN AVERAGE VALUE OF FROM 2 TO ABOUT 150, M HAS A VALUE FROM 3 TO 6 AND IS PRINCIPALLY 4.
Inventors
- 👤 Donald A Tomalia
- 👤 William K Glesner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:40
CPC Classifications
C; C09; C09J; C09J163/00; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5046; C09J153/00; C09J153/02; C09J153/025; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/08; C08L2666/14; C08L2666/28; C08L53/00; C08L53/02; C08L53/025; C08L63/00; Y; Y10; Y10S; Y10S525/00; Y10S525/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
The composition of claim 1 wherein said bis-2-oxazoline is selected from the group consisting of 2,2''(thiodiethylenebis)-2-oxazoline, 2,2''(hexamethylenebis)-2-oxazoline, 2, 2''(tetramethylenebis)-2-oxazoline, 2, 2''ethylenebis(oxyethylene)bis-2-oxazoline, and a bis-2-oxazoline of the formula
Claim 2
Dependent Claim
25 words
The composition of claim 2 wherein said carboxylated polybutadiene has the formula wherein the functionalized polybutadiene has a DP of from about 8 to 110.
References Cited (Backward Citations)
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US3312754A
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US3324198A
Cited
US3476712A
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US3580830A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |