US3769150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aromatic polysulphone coated article and bonded structure
Assignee: Imperial Chemical Industries Ltd
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Filing: 1971-06-08
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Granted: 1973-10-30
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Expires: 1991-06-08
Abstract
Abstract A solid surface is coated with, or bonded to another surface by means of, an adhesive composition comprising an aromatic polysulphone which has a reduced viscosity of at least 0.3 and which contains at least 0.2 (desirably 0.5 to 3.5) hydroxyl groups per 100 polymer repeat units.
Inventors
- 👤 T King
- 👤 J Rose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:53
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/04; B32B7/12; C; C08; C08G; C08G75/00; C08G75/20; C08G75/23; B32B15/00; B32B15/04; B32B15/043; B32B15/18; C08L; C08L81/00; C08L81/06; C09; C09J; C09J181/00; C09J181/06; B32B2311/00; B32B2311/30; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2804; Y10T428/2852; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
26 words
A coated solid surface according to claim 1 in which the aromatic polysulphone contains 0.5 to 3.5 aromatically bound hydroxyl groups per 100 polymer repeat units.
Claim 2
Dependent Claim
21 words
A coated solid surface according to claim 1 in which the aromatic polysulphone has a reduced viscosity of at least 0.4.
Claim 3
Dependent Claim
41 words
A coated solid surface according to claim 1 in which the aromatic polysulphone consists essentially of repeating units having the formula I or II, alone or in combination with each other and up to 80 percent of units having formula III
Claim 4
Dependent Claim
21 words
A coated solid surface according to claim 1 in which the aromatic polysulphone consists essentially of repeating units having the formula
Claim 5
Dependent Claim
15 words
A bonded structure comprising the coated solid surface of claim 1 bonded to another surface.
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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |