US3830779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polystyrene plastic compositions containing naphthyl ether flame retardants
Assignee: Great Lakes Chemical Corp
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Filing: 1973-02-08
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Granted: 1974-08-20
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Expires: 1993-02-08
Abstract
Abstract PLASTIC COMPOSITIONS CONTAINING POLYSTYRENES AND BISARYLOXY COMPOUNDS HAVING THE FORMULA 2-(ARYL-O-ALKYLENE-O-),(Z)M,(A)I-NAPHTHALENE WHEREIN ARYL IS FROM THE GROUP (A)I,(Z)M-PHENYL AND (Z)M'',(A)I''-NAPHTHYL Z IS BROMINE OR CHLORINE, M AND M'' ARE INTEGERS HAVING A VALUE OF 1-7, Y IS AN INTEGER HAVING A VALUE OF 1-5, I AND I'' ARE INTEGERS HAVING A VALUE OF 0-2, AND A IS CYANO, NITRO, LOWER ALKOXY, LOWER ALKYL, FLUORINE, DIALKYLAMINO, PHENYL, HALO-PHENYL, BENZYL OR HALO-BENZYL AND ALKYLENE IS A STRAIGHT OR BRANCHED CHAIN ALKYLENE GROUP HAVING FROM 1 TO 6 CARBON ATOMS.
Inventors
- 👤 A Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:39
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/06; B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/36; B01J8/38; B01J8/382; C08K5/16; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |