US3928289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydantoin produced polyurethane
Assignee: Goodyear Tire and Rubber Co
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Filing: 1973-12-26
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Granted: 1975-12-23
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Expires: 1993-12-26
Abstract
Abstract A polyurethane prepared by reacting a mol of a reactive hydrogen material of 700 and higher molecular weight with 1.2 to 3.5 mols of organic polyisocyanate and 0.2 to 2 mols of dihydroxyalkyl dialkyl hydantoin where the alkyl radical contains from 1 to 10 carbon atoms.
Inventors
- 👤 Charles B Reilly
- 👤 Robert K Rossi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:35
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3819; C08G18/3842; C08G18/3848; C08G18/65; C08G18/66
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
61 words
A POLYURRETHANE PREPARED BY REACTING A MOLE OF A REACTIVE HYDROGEN MATERIAL OF 700 AND HIGHER MOLECULAR WEIGHT SELECTED FROM THE CLASS CONSISTING OF POLYESTER POLYOLS AND POLYETHER POLYOLS, WITH 1.2 TO 3.5 MOLES OF ORGANIC POLYISOCYANATE AND 0.2 TO 2 MOLES OF HYDANTOIN CONTAINING DIHYDROXY ALKYL AND DIALKYL SUBSTITUENTS WHERE THE ALKYL RADICAL CONTAINS FROM 1 TO 10 CARBON ATOMS.
Claim 2
Dependent Claim
61 words
A POLYURRETHANE PREPARED BY REACTING A MOLE OF A REACTIVE HYDROGEN MATERIAL OF 700 AND HIGHER MOLECULAR WEIGHT SELECTED FROM THE CLASS CONSISTING OF POLYESTER POLYOLS AND POLYETHER POLYOLS, WITH 1.2 TO 3.5 MOLES OF ORGANIC POLYISOCYANATE AND 0.2 TO 2 MOLES OF HYDANTOIN CONTAINING DIHYDROXY ALKYL AND DIALKYL SUBSTITUENTS WHERE THE ALKYL RADICAL CONTAINS FROM 1 TO 10 CARBON ATOMS.
Claim 3
Dependent Claim
18 words
The polyurethane of claim 1 wherein the dihydroxy alkyl substituent is 2-hydroxyethyl and the dialkyl substituent is dimethyl.
Claim 4
Dependent Claim
22 words
The polyurethane of claim 1 wherein the polyisocyanate is selected from the class consisting of hydrogenated methylene di(phenyl isocyanate) and isophorone diisocyanate.
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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |