US3873503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of a polyamide
Assignee: Kalle GmbH and Co KG
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Filing: 1974-03-29
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Granted: 1975-03-25
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Expires: 1994-03-29
Abstract
Abstract IN WHICH AT LEAST ONE -COOR'' group is in Beta or gamma position to an adjacent -CO- group, by reacting in an inert solvent at least one organic diisocyanate having the formula This invention relates to a process for the preparation of polyamides having the general formula
Inventors
- 👤 Klaus Hoheisel
- 👤 Gisela Jenik
- 👤 Walter Seifried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:02
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/307; C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/34; C08G18/341; C08G73/00; C08G73/06; C08G73/10; C08G73/1003; C08G73/1035
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
158 words
IN THE PROCESS FOR THE PREPARATION OF A POLYAMIDE BY REACTING AN ORGANIC DIISOCYANATE WITH A DICARBOXYLIC ACID IN AN ORGANIC SOLVENT, THE IMPROVEMENT WHICH COMPRISES IMPROVING THE SOLUBILITY OF THE DICARBOXYLIC ACID AND THE POLYAMIDE IN THE INERT SOLVENT BY REACTING AT LEAST ONE ORGANIC DIISOCYANATE SELECTED FROM THE GROUP CONSISTING OF DECAMETHYLENE-1,10-DIISOCYANATE, TOLUENE-2,4-DIISOCYANATE, TOLUENE-2,6-DIISOCYANATE, 3,3''-DIMETHYLDIPHENYL-4,4''-DIISOCYANATE, 3,3''-DICHLORODIPHENYL-4,4''-DIISOCYANATE, DIPHENYL-4,4''-DIISOCYANATE, NAPHTHALENE-1,5-DIISOCYANATE, DIPHENYLSULFONE-4,4''-DIISOCYANATE, 2,2-DIPHENYLPROPANE-4,4''-DIISOCYANATE, DIPHENYLMETHANE-4,4''-DIISOCYANATE, DIPHENYLETHER-4,4''-DIISOCYANATE, AND HEXAMETHYLENE-1,6-DIISOCYANATE, WITH AT LEAST ONE DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF -(4-METHOXY-PHENYLCARBOXY)-ISOPHTHALIC ACID 2,5-DI(4-METHOXY-PHENYLCARBOXY)-TEREPHTHALIC ACID 2-(4-METHOXY-PHENYLCARBOXY)-TEREPHTHALIC ACID 2-(4-PHENOXY-PHENYCARBOXY)-TEREPHTHALIC ACID 2-(2,4,6-TRINITRO-PHENYLCARBOXY)-TEREPHTHALIC ACID 5-(4-N,N-DIMETHYLAMIDO-PHENYLCARBOXY)-1,4-NAPHTHALENE DICARBOXYLIC ACID 4-(2-METHOXY-PHENYLCARBOXY)-1,5-NAPHTHALENE DICARBOXYLIC ACID 3-(3-METHOXY-PHENYLCARBOXY)-2,6-NAPHTHALENE DICARBOXYLIC ACID 2,5-(2-METHOXY-ETHYLCARBOXY)-1,4-NAPHTHALENE DICARBOXYLIC ACID 2,5-(2(2-METHOXYETHOXY)-ETHYLCARBOXY)-1,4-NAPHTHALENE DICARBOXYLIC ACID 5,8-(2(2-METHOXYETHOXY)-ETHYLCARBOXY)-1,4-NAPHTHALENE DICARBOXYLIC ACID 2,4-DI2(2-METHOXYETHOXY)-ETHYLCARBOXY-1,5-NAPHTHALENE DICARBOXYLIC ACID 4,10-DI(4-METHOXY-PHENYLCARBOXY)-3,9-PERYLENE DICARBOXYLIC ACID 1,8-DI(2-METHOXY-ETHYLCARBOXY)-9,10-PHENANTHRENE DICARBOXYLIC ACID 3,3''-DI(2(2(2-METHOXYETHOXY)ETHOXY)-ETHYLCARBOXY)2,2''DIPHENYL DICARBOXYLIC ACID 3,3''-DI(2-METHOXY-ETHYLCARBOXY)-4,4''-BENZOPHENONE DICARBOXYLIC ACID 3,4''-DI(2-NITRO-PROPYLCARBOXY)-3'',4-BENZOPHENONE DICARBOXYLIC ACID 3,4''-DI(2-PHENOXY-ETHYLCARBOXY)3,4-BENZOPHENONE DICARBOXYLIC ACID 4,4''-DI(2-ETHOXY-ETHYLCARBOXY)-3,3''-BENZOPHENONE DICARBOXYLIC ACID 2-(N,N-DIMETHYLAMIDO-METHYLCARBOXY)2'',3-BENZOPHENONE DICARBOXYLIC ACID 2,3''-DI(3-METHOXY-PHENYLCARBOXY)-3,4''-BENZOPHENONE DICARBOXYLIC ACID 3,5-DI(4-METHOXY-PHENYLCARBOXY)-2,4-FURAN DICARBOXYLIC ACID 3,6-DI(2-METHOXY-PHENYLCARBOXY)-2,5-PYRAZINE DICARBOXYLIC ACID 3,3''-DI(2-ETHYLCARBOXY)-4,4''-DIPHENYL SULFONE DICARBOXYLIC ACID 3,3''-DI(3-NITRO-PHENYLCARBOXY)-4,4''-DIPHENYL ETHER DICARBOXYLIC ACID 3,4''-DI(4-METHOXY-PHENYLCARBOXY)-DIPHENYL-1,1-ETHANE-3'',4DICARBOXYLIC ACID 3,3''-DI(3-METHOXY-PHENYLCARBOXY)-DIPHENYL-1,1-ETHANE-2,2''DICARBOXYLIC AICD, AND 5,4''-DI(METHOXY-PHENYLCARBOXY)-DINAPHTHYLKETONE-4,5'' DICARBOXYLIC ACID.
Claim 2
Dependent Claim
158 words
IN THE PROCESS FOR THE PREPARATION OF A POLYAMIDE BY REACTING AN ORGANIC DIISOCYANATE WITH A DICARBOXYLIC ACID IN AN ORGANIC SOLVENT, THE IMPROVEMENT WHICH COMPRISES IMPROVING THE SOLUBILITY OF THE DICARBOXYLIC ACID AND THE POLYAMIDE IN THE INERT SOLVENT BY REACTING AT LEAST ONE ORGANIC DIISOCYANATE SELECTED FROM THE GROUP CONSISTING OF DECAMETHYLENE-1,10-DIISOCYANATE, TOLUENE-2,4-DIISOCYANATE, TOLUENE-2,6-DIISOCYANATE, 3,3''-DIMETHYLDIPHENYL-4,4''-DIISOCYANATE, 3,3''-DICHLORODIPHENYL-4,4''-DIISOCYANATE, DIPHENYL-4,4''-DIISOCYANATE, NAPHTHALENE-1,5-DIISOCYANATE, DIPHENYLSULFONE-4,4''-DIISOCYANATE, 2,2-DIPHENYLPROPANE-4,4''-DIISOCYANATE, DIPHENYLMETHANE-4,4''-DIISOCYANATE, DIPHENYLETHER-4,4''-DIISOCYANATE, AND HEXAMETHYLENE-1,6-DIISOCYANATE, WITH AT LEAST ONE DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF -(4-METHOXY-PHENYLCARBOXY)-ISOPHTHALIC ACID 2,5-DI(4-METHOXY-PHENYLCARBOXY)-TEREPHTHALIC ACID 2-(4-METHOXY-PHENYLCARBOXY)-TEREPHTHALIC ACID 2-(4-PHENOXY-PHENYCARBOXY)-TEREPHTHALIC ACID 2-(2,4,6-TRINITRO-PHENYLCARBOXY)-TEREPHTHALIC ACID 5-(4-N,N-DIMETHYLAMIDO-PHENYLCARBOXY)-1,4-NAPHTHALENE DICARBOXYLIC ACID 4-(2-METHOXY-PHENYLCARBOXY)-1,5-NAPHTHALENE DICARBOXYLIC ACID 3-(3-METHOXY-PHENYLCARBOXY)-2,6-NAPHTHALENE DICARBOXYLIC ACID 2,5-(2-METHOXY-ETHYLCARBOXY)-1,4-NAPHTHALENE DICARBOXYLIC ACID 2,5-(2(2-METHOXYETHOXY)-ETHYLCARBOXY)-1,4-NAPHTHALENE DICARBOXYLIC ACID 5,8-(2(2-METHOXYETHOXY)-ETHYLCARBOXY)-1,4-NAPHTHALENE DICARBOXYLIC ACID 2,4-DI2(2-METHOXYETHOXY)-ETHYLCARBOXY-1,5-NAPHTHALENE DICARBOXYLIC ACID 4,10-DI(4-METHOXY-PHENYLCARBOXY)-3,9-PERYLENE DICARBOXYLIC ACID 1,8-DI(2-METHOXY-ETHYLCARBOXY)-9,10-PHENANTHRENE DICARBOXYLIC ACID 3,3''-DI(2(2(2-METHOXYETHOXY)ETHOXY)-ETHYLCARBOXY)2,2''DIPHENYL DICARBOXYLIC ACID 3,3''-DI(2-METHOXY-ETHYLCARBOXY)-4,4''-BENZOPHENONE DICARBOXYLIC ACID 3,4''-DI(2-NITRO-PROPYLCARBOXY)-3'',4-BENZOPHENONE DICARBOXYLIC ACID 3,4''-DI(2-PHENOXY-ETHYLCARBOXY)3,4-BENZOPHENONE DICARBOXYLIC ACID 4,4''-DI(2-ETHOXY-ETHYLCARBOXY)-3,3''-BENZOPHENONE DICARBOXYLIC ACID 2-(N,N-DIMETHYLAMIDO-METHYLCARBOXY)2'',3-BENZOPHENONE DICARBOXYLIC ACID 2,3''-DI(3-METHOXY-PHENYLCARBOXY)-3,4''-BENZOPHENONE DICARBOXYLIC ACID 3,5-DI(4-METHOXY-PHENYLCARBOXY)-2,4-FURAN DICARBOXYLIC ACID 3,6-DI(2-METHOXY-PHENYLCARBOXY)-2,5-PYRAZINE DICARBOXYLIC ACID 3,3''-DI(2-ETHYLCARBOXY)-4,4''-DIPHENYL SULFONE DICARBOXYLIC ACID 3,3''-DI(3-NITRO-PHENYLCARBOXY)-4,4''-DIPHENYL ETHER DICARBOXYLIC ACID 3,4''-DI(4-METHOXY-PHENYLCARBOXY)-DIPHENYL-1,1-ETHANE-3'',4DICARBOXYLIC ACID 3,3''-DI(3-METHOXY-PHENYLCARBOXY)-DIPHENYL-1,1-ETHANE-2,2''DICARBOXYLIC AICD, AND 5,4''-DI(METHOXY-PHENYLCARBOXY)-DINAPHTHYLKETONE-4,5'' DICARBOXYLIC ACID.
Claim 3
Dependent Claim
31 words
A process according to claim 1 in which the polyamides are converted into shaped articles having no imide units at an elevated temperature in the range of about 20* to 200*C.
Claim 4
Dependent Claim
31 words
A process according to claim 1 in which the polyamides are converted into shaped articles having cyclic imide units at an elevated temperature in the range of about 200* to 1,000*C.
Claim 5
Dependent Claim
18 words
A process according to claim 1 in which the reaction is effected in the presence of a catalyst.
References Cited (Backward Citations)
US3551383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |