Patent US3671496A successfully refreshed from Google Patents.
US3671496A
Expired / Lapsed
US
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Process for preparing resinous compositions
Assignee: NOF Corp
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Filing: 1970-09-08
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Granted: 1972-06-20
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Expires: 1990-09-08
Abstract
Abstract A polyurethane composition comprising the reaction product of an acrylic polymer comprising: Component A A monomer having BOND AND FURTHER HAVING -OH, -CONH2,-CONHCH2OH or -CON(CH2OH)2 groups, Component B A monobasic or polybasic acid having a BOND, Component C An alkyl ester of an Alpha , Beta -unsaturated carboxylic acid, or a compound having a GROUP BUT WHICH IS FREE OF -OH, -COOH and ester groups, or COMPOUND FREE OF H2C=C such as the glycidyl ester of versatic acid; and a diisocyanate such as xylene diisocyanate or a prepolymer thereof.
Inventors
- 👤 Hiromasa Masuda
- 👤 Eiiti Nishigaki
- 👤 Tomosuke Maeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:02
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6216; C08G18/625; C08G18/6258; C08G18/6254; C08G18/6266; C08G18/70; C08G18/72; C08G18/74; C08G18/76
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
32 words
A composition as in claim 1 wherein A is 2-hydroxy ethyl acrylate, B is acrylic acid and C is a mixture of methyl methacrylate, ethyl acrylate, ethyl hexyl acrylate and butyl methacrylate.
Claim 2
Dependent Claim
35 words
A composition as in claim 1 wherein A is a mixture of acrylamide, propylene glycol monoacrylate and 2-hydroxyethyl acrylate, B is acrylic acid and C is a mixture of styrene, ethyl acrylate and butyl methacrylate.
Claim 3
Dependent Claim
35 words
A composition as in claim 1 wherein A is a mixture of 2-hydroxypropyl acrylate and glycidyl methacrylate, B is maleic anhydride and C is a mixture of acrylonitrile, ethyl acrylate, methyl methacrylate and cyclohexyl methacrylate.
References Cited (Backward Citations)
US3245941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |