US3268504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aromatic sulfides
Assignee: Dow Chemical Co
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Filing: 1960-12-12
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Granted: 1966-08-23
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Expires: 1980-12-12
Abstract
No abstract record available.
Inventors
- 👤 Guy H Harris
- 👤 Bryant C Fischback
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:22
CPC Classifications
C; C07; C07C; C07C321/00; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/24; C07C2603/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A PROCESS FOR PRODUCING A PPOLYAROMATIC SULFIDE WHICH COMPRISES FUSING AT A TEMPERATURE OF 225* TO 265* C. A REACTION MIXTURE CONSISTING ESSENTIALLY OF (A) A NUCLEARLY POLYHALOGENATED AROMATIC HYDROCARBON COMPOUND HAVING NOT MORE THAN THREE AROMATIC RINGS AND CONTAINING AT LEAST TWO NUCLEARLY SUBSTITUTED HALOGEN ATOMS HAVING AN ATMIC NUMBER OF FROM 17 TO 35, INCLUSIVE WHICH ARE NOT ORTHO ONE TO THE OTHER, (B) A COMPOUND THE CATION OF WHICH IS A METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METALS AND THE ANION OF WHICH IS SELECTED FROM THE GROUP CONSISTING OF OXIDE, BORATE AND CARBONATE AND (C) SULFUR, UNDER AUTOGENOUS PRESSURE AND IN THE PRESENCE OF AN INITIATOR SELECTED FROM THE GROUP CONSISTING OF BIS (HALOARYL) SULFIDES, AND TRIS (HALOARYL) SULFONIUM CHLORIDES, WHEREIN AT LEAST TWO OF THE HALOGENS HAVE AN ATOMIC NUMBER FROM 17 TO 35, INCLUSIVE.
Claim 2
Dependent Claim
145 words
A PROCESS FOR PRODUCING A PPOLYAROMATIC SULFIDE WHICH COMPRISES FUSING AT A TEMPERATURE OF 225* TO 265* C. A REACTION MIXTURE CONSISTING ESSENTIALLY OF (A) A NUCLEARLY POLYHALOGENATED AROMATIC HYDROCARBON COMPOUND HAVING NOT MORE THAN THREE AROMATIC RINGS AND CONTAINING AT LEAST TWO NUCLEARLY SUBSTITUTED HALOGEN ATOMS HAVING AN ATMIC NUMBER OF FROM 17 TO 35, INCLUSIVE WHICH ARE NOT ORTHO ONE TO THE OTHER, (B) A COMPOUND THE CATION OF WHICH IS A METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METALS AND THE ANION OF WHICH IS SELECTED FROM THE GROUP CONSISTING OF OXIDE, BORATE AND CARBONATE AND (C) SULFUR, UNDER AUTOGENOUS PRESSURE AND IN THE PRESENCE OF AN INITIATOR SELECTED FROM THE GROUP CONSISTING OF BIS (HALOARYL) SULFIDES, AND TRIS (HALOARYL) SULFONIUM CHLORIDES, WHEREIN AT LEAST TWO OF THE HALOGENS HAVE AN ATOMIC NUMBER FROM 17 TO 35, INCLUSIVE.
References Cited (Backward Citations)
US2538941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |