US3869433A
Expired / Lapsed
US
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Arylene sulfide polymers
Assignee: Phillips Petroleum Co
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Filing: 1973-11-19
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Granted: 1975-03-04
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Expires: 1993-11-19
Abstract
Abstract A method of producing arylene sulfide polymers employing (1) polyhalo-substituted aromatic compounds; (2) an alkali metal bisulfide selected from lithium, sodium, potassium, rubidium, and cesium bisulfides, (3) bases selected from the hydroxides of magnesium, calcium, strontium and barium and the carbonates of sodium, potassium, rubidium and cesium; and, (4) organic amides.
Inventors
- 👤 Robert W Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:05
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/02; C08G75/0204; C08G75/025; C08G75/0259
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
93 words
A METHOD OF PRODUCING A POLYMER WHICH COMPRISES: A. FORMING A COMPOSITION BY CONTACTING AT LEAST ONE POLYHALOSUBSTITUTED AROMATIC COMPOUND WHEREIN THE HALOGEN ATOMS ARE ATTACHED TO AROMATIC RING CARBON ATOMS, AT LEAST ONE BASE SELECTED FROM THE HYDROXIDES OF MAGNESIUM, CALCIUM, STRONTIUM AND BARIUM AND THE CARBONATES OF SODIUM, POTASSIUM, RABIDUIM AND CESIUM, AT LEAST ONE ORGANIC AMIDE AND AT LEAST ONE ALKALI METAL BISULFIDE SELECTED FROM BISULFIDES OF LITHIUM, SODIUM, POTASSIUM, RUBIDIUM AND CESIUM; AND B. MAINTAINING AT LEAST A PORTION OF SAID COMPOSITION AT POLYMERIZATION CONDITIONS TO PRODUCE SAID POLYMER.
Claim 2
Independent Claim
93 words
A METHOD OF PRODUCING A POLYMER WHICH COMPRISES: A. FORMING A COMPOSITION BY CONTACTING AT LEAST ONE POLYHALOSUBSTITUTED AROMATIC COMPOUND WHEREIN THE HALOGEN ATOMS ARE ATTACHED TO AROMATIC RING CARBON ATOMS, AT LEAST ONE BASE SELECTED FROM THE HYDROXIDES OF MAGNESIUM, CALCIUM, STRONTIUM AND BARIUM AND THE CARBONATES OF SODIUM, POTASSIUM, RABIDUIM AND CESIUM, AT LEAST ONE ORGANIC AMIDE AND AT LEAST ONE ALKALI METAL BISULFIDE SELECTED FROM BISULFIDES OF LITHIUM, SODIUM, POTASSIUM, RUBIDIUM AND CESIUM; AND B. MAINTAINING AT LEAST A PORTION OF SAID COMPOSITION AT POLYMERIZATION CONDITIONS TO PRODUCE SAID POLYMER.
Claim 3
Dependent Claim
33 words
The method of claim 1 in which said polyhalo-substituted aromatic compound is employed in an amount within the range of from about 0.9 to about 2 gram-moles per gram-mole of alkali metal bisulfide.
Claim 4
Dependent Claim
31 words
The method of claim 1 in which said base is employed in an amount within the range of from about 0.3 to about 4 gram-equivalents per gram-mole of alkali metal bisulfide.
Claim 5
Dependent Claim
34 words
The method of claim 2 in which said organic amide is employed in an amount within the range of from about 100 grams to about 2, 500 grams per gram-mole of polyhalo-substituted aromatic compound.
Claim 6
Dependent Claim
31 words
The method of claim 1 in which said polyhalo-substituted aromatic compound is 1,4-dichlorobenzene, said organic amide is N-methyl-2-pyrrolidone, said base is sodium carbonate and said alkali metal bisulfide is sodium bisulfide.
Claim 7
Dependent Claim
31 words
The method of claim 1 in which said polyhalo-substituted aromatic compound is 1,4-dichlorobenzene, said organic amide is N-methyl-2-pyrrolidone, said base is potassium carbonate and said alkali metal bisulfide is sodium bisulfide.
Claim 8
Dependent Claim
31 words
The method of claim 1 in which said polyhalo-substituted aromatic compound is 1,4-dichlorobenzene, said organic amide is N-methyl-2-pyrrolidone, said base is calcium hydroxide and said alkali metal bisulfide is sodium bisulfide.
Claim 9
Dependent Claim
31 words
The method of claim 1 in which said polyhalo-substituted aromatic compound is 1,4-dichlorobenzene, said organic amide is N-methyl-2-pyrrolidone, said base is magnesium hydroxide and said alkali metal bisulfide is sodium bisulfide.
Claim 10
Dependent Claim
21 words
The method of claim 1 in which water is removed from said composition prior to maintaining said composition at polymerization conditions.
Claim 11
Independent Claim
106 words
A method of producing a polymer which comprises: a. contacting at least one organic amide, at least one alkali metal bisulfide selected from bisulfides of lithium, sodium, potassium, rubidium and cesium and at least one base selected from the hydroxides of magnesium, calcium, strontium and barium and the carbonates of sodium, potassium, rubidium and cesium to form a first composition; b. contacting at least a portion of said first composition with at least one polyhalo-Subsituted aromatic compound wherein the halogen atoms are attached to aromatic ring carbon atoms to form a second composition; and, c. maintaining said second composition at polymerization conditions to form said polymer.
Claim 12
Independent Claim
106 words
A method of producing a polymer which comprises: a. contacting at least one organic amide, at least one alkali metal bisulfide selected from bisulfides of lithium, sodium, potassium, rubidium and cesium and at least one base selected from the hydroxides of magnesium, calcium, strontium and barium and the carbonates of sodium, potassium, rubidium and cesium to form a first composition; b. contacting at least a portion of said first composition with at least one polyhalo-Subsituted aromatic compound wherein the halogen atoms are attached to aromatic ring carbon atoms to form a second composition; and, c. maintaining said second composition at polymerization conditions to form said polymer.
Claim 13
Dependent Claim
33 words
The method of claim 10 in which said polyhalo-substituted aromatic compound is employed in an amount within the range of from about 0.9 to about 2 gram-moles per gram-mole of alkali metal bisulfide.
Claim 14
Dependent Claim
31 words
The method of claim 10 in which said base is employed in an amount within the range of from about 0.3 to about 4 gram-equivalents per gram-mole of alkali metal bisulfide.
Claim 15
Dependent Claim
33 words
The method of claim 11 in which said organic amide is employed in an amount within the range of from about 100 grams to about 2,500 grams per gram-mole of polyhalo-substituted aromatic compound.
Claim 16
Dependent Claim
31 words
The method of claim 10 in which said polyhalo-substituted aromatic compound is 1,4-dichlorobenzene, said organic amide is N-methyl-2-pyrrolidone, said base is sodium carbonate and said alkali metal bisulfide is sodium bisulfide.
Claim 17
Dependent Claim
31 words
The method of claim 10 in which said polyhalo-substituted aromatic compound, is 1,4-dichlorobenzene, said organic amide is N-methyl-2-pyrrolidone, said base is potassium carbonate and said alkali metal bisulfide is sodium bisulfide.
Claim 18
Dependent Claim
31 words
The method of claim 10 in which said polyhalo-substituted aromatic compound is 1,4-dichlorobenzene, said organic amide is N-methyl-2-pyrrolidone, said base is calcium hydroxide and said alkali metal bisulfide is sodium bisulfide.
Claim 19
Dependent Claim
31 words
The method of claim 10 in which said polyhalo-substituted aromatic compound is 1,4-dichlorobenzene, said organic amide is N-methyl-2-pyrrolidone, said base is magnesium hydroxide and said alkali metal bisulfide is sodium bisulfide.
Claim 20
Dependent Claim
23 words
The method of claim 10 in which water is removed from said first composition prior to maintaining said second composition at polymerization conditions.
References Cited (Backward Citations)
US3538166A
Cited
US3763124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |