US3009906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogenation of solid resinous polymers of alkenylaromatic compounds with gaseous halogens
Assignee: Dow Chemical Co
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Filing: 1957-05-09
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Granted: 1961-11-21
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Expires: 1977-05-09
Abstract
No abstract record available.
Inventors
- 👤 Eichhorn Jacob
- 👤 Louis C Rubens
- 👤 Charles E Fahlgren
- 👤 George J Pomranky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:24
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/126; C08F; C08F8/00; C08F8/18; C08F8/20; C08J2325/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A METHOD OF CROSSLINKING THE POLYMER IN A SOLID THERMOPLASTILC RESINOUS POLYMER ARTICLE, WHICH ARTICLE HAS AT LEAST ONE DIMENSION THAT IS NOT GREATER THAN 0.1 INCH AND WHEREIN THE RESINOUS POLYMER CONTAINS AT LEAST 50 PERCENT BY WEIGHT OF AN ALKENYLAROMATIC COMPOUND POLYMERICALLY COMBINED THEREILN, BY CONTACTING SUCH SOLID ARTICLE WITH A GASEOUS ATMOSPHERE COMPRISING AT LEAST ONE MOLECULAR HALOGEN SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE AND MAINTAINING SUCH SOLID ARTICLE IN CONTACT WITH SUCH HALOGEN-CONTAINING GASEOUS ATMOSPHERE AT A TEMPERATURE BETWEEN-70% AND 100*C. AND ABOVE THE DEW POINT OF THE GASEOUS ATMOSPHERE UNTIL THE ARTICLE IS HALOGENATED TO AN EXTENT CORRESPONDING TO FROM 1 TO 50 PERCENT BY WEIGHT OF HALOGEN CHEMICALLY COMBINED WILTH THE POLYMER IN SUCH ARTICLE.
Claim 2
Independent Claim
124 words
A METHOD OF CROSSLINKING THE POLYMER IN A SOLID THERMOPLASTILC RESINOUS POLYMER ARTICLE, WHICH ARTICLE HAS AT LEAST ONE DIMENSION THAT IS NOT GREATER THAN 0.1 INCH AND WHEREIN THE RESINOUS POLYMER CONTAINS AT LEAST 50 PERCENT BY WEIGHT OF AN ALKENYLAROMATIC COMPOUND POLYMERICALLY COMBINED THEREILN, BY CONTACTING SUCH SOLID ARTICLE WITH A GASEOUS ATMOSPHERE COMPRISING AT LEAST ONE MOLECULAR HALOGEN SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE AND MAINTAINING SUCH SOLID ARTICLE IN CONTACT WITH SUCH HALOGEN-CONTAINING GASEOUS ATMOSPHERE AT A TEMPERATURE BETWEEN-70% AND 100*C. AND ABOVE THE DEW POINT OF THE GASEOUS ATMOSPHERE UNTIL THE ARTICLE IS HALOGENATED TO AN EXTENT CORRESPONDING TO FROM 1 TO 50 PERCENT BY WEIGHT OF HALOGEN CHEMICALLY COMBINED WILTH THE POLYMER IN SUCH ARTICLE.
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) | 1964-11-20 | 1965-05-22 | 1965-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-20 | 1969-05-22 | 1969-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-20 | 1973-05-22 | 1973-11-21 | $7700.00 | Window Closed / Lapsed |