US4200762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Actinic radiation curable polymers
Assignee: ATK Launch Systems LLC
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Filing: 1978-09-01
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Granted: 1980-04-29
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Expires: 1998-09-01
Abstract
Abstract Prepolymers having at least one functional group capable of absorbing actinic radiation resulting in electronic excitation of the molecule, leading to free radical type cure of systems containing these prepolymers and prepolymers capable of curing by a free radical mechanism are disclosed.
Inventors
- 👤 Claude J. Schmidle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:29
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/06; C; C08; C08F; C08F299/00; C08F299/02; C08F299/06; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G85/00; C08G85/004; Y; Y10; Y10S; Y10S522/00; Y10S522/904; Y10S525/00; Y10S525/92
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
37 words
The product obtained by treating a hydroxyl terminated poly(ethylene adipate) of molecular weight 800 endcapped with toluene diisocyanate to a final isocyanate content of about 3.0 with about a stoichiometric equivalent of benzoin at about 60° C.
Claim 2
Dependent Claim
37 words
The product obtained by treating a hydroxyl terminated poly(ethylene adipate) of molecular weight 800 endcapped with toluene diisocyanate to a final isocyanate content of about 3.0 with about a stoichiometric equivalent of benzoin at about 60° C.
Claim 3
Dependent Claim
37 words
The product obtained by treating a hydroxyl terminated poly(ethylene adipate) of molecular weight about 1600 endcapped with toluene diisocyanate at an NCO/OH ratio of 1.67 with benzoin at an NCO/OH ratio of 1.05 at about 60° C.
Claim 4
Dependent Claim
37 words
The product obtained by treating a hydroxyl terminated poly(ethylene adipate) of molecular weight about 1600 endcapped with toluene diisocyanate at an NCO/OH ratio of 1.67 with benzoin at an NCO/OH ratio of 1.05 at about 60° C.
Claim 5
Dependent Claim
31 words
The product obtained by treating a poly (oxypropylene) glycol of 987 molecular weight endcapped with toluene diisocyanate at an NCO/OH ratio of 2.0 with benzoin at an OH/NCO ratio of 1.05.
Claim 6
Dependent Claim
31 words
The product obtained by treating a poly (oxypropylene) glycol of 987 molecular weight endcapped with toluene diisocyanate at an NCO/OH ratio of 2.0 with benzoin at an OH/NCO ratio of 1.05.
Claim 7
Dependent Claim
35 words
The product obtained by treating a poly(oxypropylene) glycol of 1025 molecular weight endcapped with toluene diisocyanate at an NCO/OH ratio of 2.0 with 0.9 equivalents of benzoin and 0.1 equivalent of diethylene glycol monobutyl ether.
Claim 8
Dependent Claim
35 words
The product obtained by treating a poly(oxypropylene) glycol of 1025 molecular weight endcapped with toluene diisocyanate at an NCO/OH ratio of 2.0 with 0.9 equivalents of benzoin and 0.1 equivalent of diethylene glycol monobutyl ether.
References Cited (Backward Citations)
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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) | 1983-04-29 | 1983-10-29 | 1984-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-29 | 1987-10-29 | 1988-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-29 | 1991-10-29 | 1992-04-29 | $7700.00 | Window Closed / Lapsed |