US3882092A
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: 1975-05-06
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Expires: 1993-11-19
Abstract
Abstract A method of producing arylene sulfide polymers employing (1) polyhalo-substituted aromatic compounds; (2) thiocarbamates, as hereinafter defined; (3) bases selected from the hydroxides of lithium, sodium, potassium, rubidium, cesium, magnesium, calcium, strontium and barium and the carbonates of sodium, potassium, rubidium and cesium; and, (4) organic amides.
Inventors
- 👤 Charles W Moberly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:31
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/02; C08G75/0204; C08G75/025; C08G75/0272
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
68 words
A METHOD OF PRODUCING A POLYMER WHICH COMPRISES: A. CONTACTING AT LEAST ONE POLYHALO-SUBSTITUTED AROMATIC COMPOUND WHEREIN THE HALOGEN ATOMS ARE ATTACHED TO AROMATIC RING CARBON ATOMS, AT LEAST ONE BASE SELECTED FROM THE HYDROXIDES OF LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CESIUM, MAGNESIUM, CALCIUM, STRONTIUM AND BARIUM AND THE CARBONATES OF SODIUM, POTASSIUM, RUBIDIUM AND CESIUM, AT LEAST ONE ORGANIC AMIDE AND AT LEAST ONE THIOCARBAMATE HAVING THE FORMULA
Claim 2
Independent Claim
68 words
A METHOD OF PRODUCING A POLYMER WHICH COMPRISES: A. CONTACTING AT LEAST ONE POLYHALO-SUBSTITUTED AROMATIC COMPOUND WHEREIN THE HALOGEN ATOMS ARE ATTACHED TO AROMATIC RING CARBON ATOMS, AT LEAST ONE BASE SELECTED FROM THE HYDROXIDES OF LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CESIUM, MAGNESIUM, CALCIUM, STRONTIUM AND BARIUM AND THE CARBONATES OF SODIUM, POTASSIUM, RUBIDIUM AND CESIUM, AT LEAST ONE ORGANIC AMIDE AND AT LEAST ONE THIOCARBAMATE HAVING THE FORMULA
Claim 3
Dependent Claim
29 words
The method of claim 1 in which said composition is formed employing about 0.9 to about 2 gram-moles of polyhalo-substituted aromatic compound per gram-atom of sulfur in said thiocarbamate.
Claim 4
Dependent Claim
27 words
The method of claim 1 in which said composition is formed employing about 1 to about 6 gram-equivalents of base per gram-atom of sulfur in said thiocarbamate.
Claim 5
Dependent Claim
33 words
The method of claim 1 in which said organic amide is employed in an amount within the range of from about 100 grams to about 2500 grams per gram-mole of polyhalo-substituted aromatic compound.
Claim 6
Dependent Claim
62 words
The method of claim 1 in which said thiocarbamate is selected from the group consisting of lithium thiocarbamate, methyl butyldithiocarbamate, sodium dimethyldithiocarbamate, sodium ethyldithiocarbamate, S-ethyl propylthiocarbamate, O-isopropyl butylthiocarbamate, butyl methylethyldithiocarbamate, hexyl diphenyldithiocarbamate, potassium p-tolylthiocarbamate, 2-ethylhexyl dibenzyldithiocarbamate, S-decyl dicyclohexylthiocarbamate, dodecyl didodecylthiocarbamate, O-cyclohexyl dihexylthiocarbamate, rubidium (3-ethylpentyl)dithiocarbamate, S-phenyl didecylthiocarbamate, cyclopentylmethyl (cyclopentylmethyl)dithiocarbamate, cesium (3-methylcyclopentyl)thiocarbamate, 4-methylcyclohexyl octyldithiocarbamate, O-benzyl propylisobutylthiocarbamate, m-tolyl diisopropyldithiocarbamate, and the like, and mixtures thereof.
Claim 7
Dependent Claim
12 words
The method of claim 1 in which said thiocarbamate is sodium dimethyldithiocarbamate.
Claim 8
Dependent Claim
12 words
The method of claim 1 in which said thiocarbamate is sodium ethyldithiocarbamate.
Claim 9
Dependent Claim
24 words
The method of claim 6 in which said polyhalo-substituted aromatic compound is 1,4-dichlorobenzene, said base is sodium hydroxide, and said organic amide is N-methyl-2-pyrrolidone.
Claim 10
Dependent Claim
24 words
The method of claim 7 in which said polyhalo-substituted aromatic compound is 1,4-dichlorobenzene, said base is sodium hydroxide and said organic amide is N-methyl-2-pyrrolidone.
Claim 11
Dependent Claim
17 words
The method of claim 1 in which water is removed from said composition prior to step (b).
Claim 12
Independent Claim
51 words
A method of producing a polymer which comprises: a. contacting at least one base selected from the hydroxides of lithium, sodium, potassium, rubidium, cesium, magnesium, calcium, strontium, and barium and the carbonates of sodium, potassium, rubidium and cesium, at least one organic amide and at least one thiocarbamate having the formula
Claim 13
Independent Claim
51 words
A method of producing a polymer which comprises: a. contacting at least one base selected from the hydroxides of lithium, sodium, potassium, rubidium, cesium, magnesium, calcium, strontium, and barium and the carbonates of sodium, potassium, rubidium and cesium, at least one organic amide and at least one thiocarbamate having the formula
Claim 14
Dependent Claim
30 words
The method of claim 11 in which said second composition is formed employing about 0.9 to about 2 gram-moles of polyhalo-substituted aromatic compound per gram-atom of sulfur in said thiocarbamate.
Claim 15
Dependent Claim
28 words
The method of claim 11 in which said first composition is formed employing about 1 to about 6 gram-equivalents of base per gram-atom of sulfur in said thiocarbamate.
Claim 16
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 2500 grams per gram-mole of polyhalo-substituted aromatic compound.
Claim 17
Dependent Claim
62 words
The method of claim 11 in which said thiocarbamate is selected from the group consisting of lithium thiocarbamate, methyl butyldithiocarbamate, sodium dimethyldithiocarbamate, sodium ethyldithiocarbamate, S-ethyl propylthiocarbamate, O-isopropyl butylthiocarbamate, butyl methylethyldithiocarbamate, hexyl diphenyldithiocarbamate, potassium p-tolythiocarbamate, 2-ethylhexyl dibenzyldithiocarbamate, S-decyl dicyclohexylthiocarbamate, dodecyl didodecylthiocarbamate, O-cyclohexyl dihexylthiocarbamate, rubidium (3-ethylpentyl)dithiocarbamate, S-phenyl didecylthiocarbamate, cyclopentylmethyl (cyclopentylmethyl)dithiocarbamate, cesium (3-methylcyclopentyl)thiocarbamate, 4-methylcyclohexyl octyldithiocarbamate, O-benzyl propylisobutylthiocarbamate, m-tolyl diisopropyldithiocarbamate, and the like, and mixtures thereof.
Claim 18
Dependent Claim
12 words
The method of claim 11 in which said thiocarbamate is sodium dimethyldithiocarbamate.
Claim 19
Dependent Claim
12 words
The method of claim 11 in which said thiocarbamate is sodium ethyldithiocarbamate.
Claim 20
Dependent Claim
24 words
The method of claim 16 in which said polyhalo-substituted aromatic compound is 1,4-dichlorobenzene, said base is sodium hydroxide, and said organic amide is N-methyl-2-pyrrolidone.
Claim 21
Dependent Claim
24 words
The method of claim 17 in which said polyhalo-substituted aromatic compound is 1,4-dichlorobenzene, said base is sodium hydroxide and said organic amide is N-methyl-2-pyrrolidone.
Claim 22
Dependent Claim
14 words
The method of claim 11 in which water is removed from said first composition.
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) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |