US3884884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arylene sulfide polymers
Assignee: Phillips Petroleum Co
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Filing: 1973-11-20
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Granted: 1975-05-20
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Expires: 1993-11-20
Abstract
Abstract A method of producing arylene sulfide polymers employing (1) polyhalosubstituted aromatic compounds; (2) after-defined sources of sulfur; and (3) alkali metal aminoalkanoates.
Inventors
- 👤 Lacey E Scoggins
- 👤 Robert W Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:41
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/02; C08G75/0204; C08G75/025; C08G75/0272
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
179 words
A METHOD OF PRODUCING A POLYMER WHICH COMPRISES: CONTACTING AT LEAST ONE POLYHALO-SUBSTITUTED AROMATIC COMPOUND IN WHICH ONE POLYHALO-SUBSTITUTED AROMATIC COMMATIC RING CARBON ATOMS, AT LEAST ONE ALKALI METAL ARO AMINOALKANOTE HAVING THE FORMULA R2N(CR2)NCO2M WHEREIN EACH R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND HYDROCARBYL RADICALS SELECTED FROM ALKYL, CYCLOALKYL AND ARYL RADICALS AND COMBINATIONS OF SAID RADICLAS, THE NUMBER OF CARBON ATOMS IN EACH OF SAID RADICALS BEING WITHIN THE RANGE OF ONE TO ABOUT 12, M IS AN ALKALI METAL SELECTED FROM LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, AND CESIUM, N IS AN INTEGER HAVING A VALUE OF 1 TO ABOUT 12, AND THE TOTAL NUMBER OF CARBON ATOMS IN EACH MOLECULE OF THE ALKALI METAL AMINOALKANOTES IS WITHIN THE RANGE OF TWO TO ABOUT 24 AND AT LEAST ONE SULFUR SOURCE SELECTED FROM THE GROUP CONSISTING OF (A) ELEMENTAL SULFUR; (B) HYDROGEN SULFIDE; (C) CARBON DISULFIDE; (D) CARBON OXYSULFIDE; (E) PHOSPHORUS PENTASULFIDE; (F) THIOSULFATES SELECTED FROM LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CESIUM, MAGNESIUM, CALCIUM, STRONTIUM, AND BARIUM THIOSULFATES; (G) THIOCARBOXYLATES AND THIOCARBOXYLIC ACIDS HAING THE FORMULA
Claim 2
Independent Claim
179 words
A METHOD OF PRODUCING A POLYMER WHICH COMPRISES: CONTACTING AT LEAST ONE POLYHALO-SUBSTITUTED AROMATIC COMPOUND IN WHICH ONE POLYHALO-SUBSTITUTED AROMATIC COMMATIC RING CARBON ATOMS, AT LEAST ONE ALKALI METAL ARO AMINOALKANOTE HAVING THE FORMULA R2N(CR2)NCO2M WHEREIN EACH R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND HYDROCARBYL RADICALS SELECTED FROM ALKYL, CYCLOALKYL AND ARYL RADICALS AND COMBINATIONS OF SAID RADICLAS, THE NUMBER OF CARBON ATOMS IN EACH OF SAID RADICALS BEING WITHIN THE RANGE OF ONE TO ABOUT 12, M IS AN ALKALI METAL SELECTED FROM LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, AND CESIUM, N IS AN INTEGER HAVING A VALUE OF 1 TO ABOUT 12, AND THE TOTAL NUMBER OF CARBON ATOMS IN EACH MOLECULE OF THE ALKALI METAL AMINOALKANOTES IS WITHIN THE RANGE OF TWO TO ABOUT 24 AND AT LEAST ONE SULFUR SOURCE SELECTED FROM THE GROUP CONSISTING OF (A) ELEMENTAL SULFUR; (B) HYDROGEN SULFIDE; (C) CARBON DISULFIDE; (D) CARBON OXYSULFIDE; (E) PHOSPHORUS PENTASULFIDE; (F) THIOSULFATES SELECTED FROM LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CESIUM, MAGNESIUM, CALCIUM, STRONTIUM, AND BARIUM THIOSULFATES; (G) THIOCARBOXYLATES AND THIOCARBOXYLIC ACIDS HAING THE FORMULA
Claim 3
Dependent Claim
15 words
The method of claim 1 in which an organic amide is present during the contacting.
Claim 4
Dependent Claim
12 words
The method of claim 1 in which said aminoalkanoate is sodium N-methyl-4-aminobutyrate.
Claim 5
Dependent Claim
13 words
The method of claim 3 in which said polyhalo-substituted aromatic compound is 1,4-dichlorobenzene.
Claim 6
Dependent Claim
13 words
The method of claim 4 in which said sulfur source is carbon disulfide.
Claim 7
Dependent Claim
13 words
The method of claim 4 in which said sulfur source is hydrogen sulfide.
Claim 8
Dependent Claim
12 words
The method of claim 4 in which said sulfur source is N-methyl-2-pyrrolidinethione.
Claim 9
Dependent Claim
13 words
The method of claim 4 in which said sulfur source is thioacetic acid.
Claim 10
Dependent Claim
13 words
The method of claim 2 in which said sulfur source is thioacetic acid.
Claim 11
Dependent Claim
35 words
The method of claim 1 in which said alkali metal aminoalkanoate is employed in an amount of from about 1 to about 4 gram-moles per gram-atom of elemental or divalent sulfur in said sulfur source.
Claim 12
Dependent Claim
12 words
The method of claim 2 in which said sulfur source is N-methyl-2-pyrrolidinethione.
References Cited (Backward Citations)
US3354129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |