US4110314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing an aromatic polymer in the presence of an inert nonpolar aromatic reaction lubricant
Assignee: Denka Co Ltd
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Filing: 1976-12-16
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Granted: 1978-08-29
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Expires: 1996-12-16
Abstract
Abstract An aromatic polymer is prepared by polymerizing a diphenolate compound, of a dialkali metal salt of a diphenol with a dihalodiphenyl compound, of a dihalogenobenzenoid compound having an electron withdrawing group in at least one of the positions ortho or para to each of the halogen atoms, at 200 DEG C. to 400 DEG C. in the presence of from 0.1 to 30% by weight of an inert nonpolar aromatic reaction lubricant.
Inventors
- 👤 Norio Yagi
- 👤 Hideki Matsumura
- 👤 Tatsuhiro Aoyagi
- 👤 Ikuji Kishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:32
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/34; C08G65/38; C08G65/40; C08G65/4012; C08G65/4093; C08G75/00; C08G75/20; C08G75/23; C08L; C08L2205/00; C08L2205/05
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
160 words
A process for preparing an aromatic polymer which comprises polymerizing a dialkali metal salt of a diphenol with a dihalodiphenyl compound, having an electron withdrawing group in at least one of the positions ortho or para to each of the halogen atoms, at 200° C to 400° C, in an inert gas atmosphere, in the presence of from 0.1 to 30% by weight of an inert nonpolar aromatic reaction lubricant selected from the group consisting of anthracene, phenanthrene and a compound of the formula ##STR5## wherein X represents a single bond or methylene, ethylene, propylene or propylidene group or oxygen or sulfur atom; Y 1 , y 2 , y 3 and Y 4 respectively represent hydrogen atom or methyl, ethyl, methoxy, ethoxy, aryl or benzyl group and Z represents methylene group or oxygen or sulfur atom; wherein said dialkali metal salt of a diphenol and said dihalodiphenyl compound are polycondensed in the molar ratio of from 1:0.95 to 1:1.10.
Claim 2
Dependent Claim
160 words
A process for preparing an aromatic polymer which comprises polymerizing a dialkali metal salt of a diphenol with a dihalodiphenyl compound, having an electron withdrawing group in at least one of the positions ortho or para to each of the halogen atoms, at 200° C to 400° C, in an inert gas atmosphere, in the presence of from 0.1 to 30% by weight of an inert nonpolar aromatic reaction lubricant selected from the group consisting of anthracene, phenanthrene and a compound of the formula ##STR5## wherein X represents a single bond or methylene, ethylene, propylene or propylidene group or oxygen or sulfur atom; Y 1 , y 2 , y 3 and Y 4 respectively represent hydrogen atom or methyl, ethyl, methoxy, ethoxy, aryl or benzyl group and Z represents methylene group or oxygen or sulfur atom; wherein said dialkali metal salt of a diphenol and said dihalodiphenyl compound are polycondensed in the molar ratio of from 1:0.95 to 1:1.10.
Claim 3
Dependent Claim
77 words
The process of claim 1 wherein said alkali metal salt of a diphenol has the formula ##STR6## wherein M represents an alkali metal atom and Z represents --SO 2 --, --CO-- or a C 1-5 alkylene group, and the --OM group is ortho or para to Z; and said dihalodiphenyl compound has the formula ##STR7## wherein X represents a halogen atom and Z' represents --SO 2 -- or --CO--, and X is ortho or para to Z'.
Claim 4
Dependent Claim
30 words
The process of claim 1, wherein said dialkali metal salt of a diphenol is the disodium or dipotassium salt of a diphenol containing a single or a polynuclear phenyl group.
Claim 5
Dependent Claim
18 words
The process of claim 1, wherein said dihalodiphenyl compound is 4,4'-dichlorodiphenylsulfone, 2,4'-dichlorodiphenylsulfone, 4,4'-dichlorobenzophenone, 2,4'-dichlorobenzophenone, or a mixture thereof.
Claim 6
Dependent Claim
21 words
The process of claim 1, wherein said inert nonpolar aromatic reaction lubricant is biphenyl, diphenyl ether, m-terphenyl, naphthalene or diphenyl thioether.
Claim 7
Dependent Claim
29 words
The process of claim 1, wherein said dialkali metal salt of a diphenol is selected from the group consisting of di-alkali metal salts of 2,2-bis-(4-hydroxyphenyl) propane, 2,4'-dihydroxydiphenylmethane, 3,3-bis-(4-hydroxyphenyl) pentane,
Claim 8
Dependent Claim
69 words
4'-dihydroxydiphenylsulfone, 2,4'-dihydroxydiphenylsulfone, 4,4'-dihydroxybenzophenone, 2,4'-dihydroxybenzophenone, 1,1-bis-(4-hydroxyphenyl) cyclohexane, 4,4'-dihydroxydiphenyl, 2,4'-dihydroxydiphenyl, and mixtures thereof; and said dihalodiphenyl compound is selected from the group consisting of 4,4'-dichlorodiphenylsulfone, 2,4'-dichlorodiphenylsulfone, 4,4'-dichlorobenzophenone, 2,4'-dichlorobenzophenone, and mixtures thereof; and said inert nonpolar aromatic reaction lubricant is selected from the group consisting of biphenyl, diphenylmethane, 1,1-diphenylethane, 1,2-diphenylethane, 2,2-diphenylpropane, methyldiphenyls, ethyldiphenyls, dibenzyltoluene, naphthalene, alkylnaphthalenes, terphenyls, hydrogenated terphenyls, anthracene, phenanthrene, diphenyl ether, dialkyl diphenyl ethers, phenyl naphthyl ethers and diphenyl thioethers.
Claim 9
Dependent Claim
69 words
4'-dihydroxydiphenylsulfone, 2,4'-dihydroxydiphenylsulfone, 4,4'-dihydroxybenzophenone, 2,4'-dihydroxybenzophenone, 1,1-bis-(4-hydroxyphenyl) cyclohexane, 4,4'-dihydroxydiphenyl, 2,4'-dihydroxydiphenyl, and mixtures thereof; and said dihalodiphenyl compound is selected from the group consisting of 4,4'-dichlorodiphenylsulfone, 2,4'-dichlorodiphenylsulfone, 4,4'-dichlorobenzophenone, 2,4'-dichlorobenzophenone, and mixtures thereof; and said inert nonpolar aromatic reaction lubricant is selected from the group consisting of biphenyl, diphenylmethane, 1,1-diphenylethane, 1,2-diphenylethane, 2,2-diphenylpropane, methyldiphenyls, ethyldiphenyls, dibenzyltoluene, naphthalene, alkylnaphthalenes, terphenyls, hydrogenated terphenyls, anthracene, phenanthrene, diphenyl ether, dialkyl diphenyl ethers, phenyl naphthyl ethers and diphenyl thioethers.
References Cited (Backward Citations)
US4010147A
Cited
US3886120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-08-28 | 1982-02-27 | 1982-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-28 | 1986-02-27 | 1986-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-28 | 1990-02-27 | 1990-08-29 | $7700.00 | Window Closed / Lapsed |