US2591884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkyd resin-diisocyanate cellular foamed plastics
Assignee: Lockheed Martin Corp
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Filing: 1949-02-17
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Granted: 1952-04-08
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Expires: 1969-02-17
Abstract
No abstract record available.
Inventors
- 👤 Simon Eli
- 👤 Frank W Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:33
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0004; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/4009; C08G18/4081; C08G18/42; C08G18/64; C08G18/6484; C08G18/67; C08G18/69; C08G2101/00; C08J2375/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
142 words
THE METHOD OF MAKING CELLULAR PLASTIC WHICH COMPRISES PROVIDING AN ALKYL RESIN HAVING AN ACID NUMBER OF FROM 5 TO 80 AND A WATER CONTENT OF FROM 0.1% TO 5% BY WEIGHT AND WHEREIN THE HYDROXYL AND CARBOXYL GROUP IN THE ALKYD RESIN REACTANTS ARE IN THE RATIO RANGE OF FROM 3(OH):1(COOH) TO 4(OH):5(COOH), MIXING SAID ALKYD RESIN AND FROM 35 TO 150 PARTS BY WEIGHT OF META-TOLUENE DIISOCYANATE FOR EACH 100 PARTS BY WEIGHT OF SAID ALKYD RESIN, FROM 1 TO 20 PARTS BY WEIGHT FOR EACH 30 PARTS BY WEIGHT OF SAID ALKYD RESIN OF A FIRE RETARDANT ALKENYL ESTER OF ARYLPHOSPHONIC ACID ADDITIVE CHOSEN FROM THE GROUP CONSISTING OF: DIALLYL PHENYL PHOSPHONATE, BIS (METHALLYL) BENZENEPHOSPHONATE, DIALLYL TOLUENE PHOSPHONATE, AND A SMALL AMOUNT OF A THERMOPLASTIC FILM-FORMING POLYMER SOLUBLE IN META-TOLUENE DIISOCYANATE, AND THEN ALLOWING THE RESULTANT MIXTURE TO REACT.
References Cited (Backward Citations)
US2282827A
Cited
US2498621A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |