US4207410A
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Method for the preparation and use of polyether ester amides with units of the starting components randomly distributed in the polymer chain
Assignee: Huels AG
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Filing: 1978-03-21
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Granted: 1980-06-10
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Expires: 1998-03-21
Abstract
Abstract Method for preparing and using thermoplastic polyether ester amides with units of the starting components randomly distributed in the polymer chain. A mixture of: I. one or more polyamide forming compounds from the group of the omega-aminocarboxylic acids and/or lactams having at least 10 carbon atoms; II. an alpha, omega-dihydroxy-(polytetrahydrofuran) having an average degree of polymerization of between about 2 and 42 or a molecular weight of between 160 and 3,000; and III. at least one organic dicarboxylic acid is heated in a weight ratio of I to (II+III) of between 30:7 and 98:2. In (II+III) the hydroxy and carboxy groups are present in equivalent amounts. The heating takes place in the presence of 2-30% by weight of water, based on the polyamide-forming compounds of component I, under the internal pressure attained in a closed container at temperatures of between 230° and 300° C. Water is removed as steam and after removal of the water, the product is further treated at 250°-280° C. with the exclusion of oxygen under normal pressure or under reduced pressure.
Inventors
- 👤 Klaus Burzin
- 👤 Salih Mumcu
- 👤 Rainer Feldmann
- 👤 Hans Jadamus
- 👤 Roland Feinauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:04
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/44
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
204 words
A method for the production of thermoplastic polyether ester amides having units of the starting components randomly distributed in the polymer chain, comprising: (A) heating at a temperature of about 230°-300° C. a mixture consisting essentially of: I. at least one polyamide forming compound selected from the group consisting of omega-aminocarboxylic acids having at least 10 carbon atoms, lactams having at least 10 carbon atoms, or omega-aminocarboxylic acids and lactams having at least 10 carbon atoms; II. an alpha, omega-dihydroxy-(polytetrahydrofuran) having an average degree of polymerization of between about 2 and 42 or a molecular weight of between 160 and 3,000; and III. at least one organic dicarboxylic acid; in a weight ratio of I to (II+III) of between 30:70 and 98:2, wherein hydroxy and carboxy groups in components II and III are present in equivalent amounts, in the presence of about 2-30% by weight of water, based on the polyamide-forming compounds of group I, under the internal pressure developed in a closed container and condensing a product; (B) removing the water from the condensing stage (A); and (C) completely condensing the product in a second condensing stage with the exclusion of oxygen under normal pressure or under reduced pressure at about 250°-280° C.
Claim 2
Independent Claim
204 words
A method for the production of thermoplastic polyether ester amides having units of the starting components randomly distributed in the polymer chain, comprising: (A) heating at a temperature of about 230°-300° C. a mixture consisting essentially of: I. at least one polyamide forming compound selected from the group consisting of omega-aminocarboxylic acids having at least 10 carbon atoms, lactams having at least 10 carbon atoms, or omega-aminocarboxylic acids and lactams having at least 10 carbon atoms; II. an alpha, omega-dihydroxy-(polytetrahydrofuran) having an average degree of polymerization of between about 2 and 42 or a molecular weight of between 160 and 3,000; and III. at least one organic dicarboxylic acid; in a weight ratio of I to (II+III) of between 30:70 and 98:2, wherein hydroxy and carboxy groups in components II and III are present in equivalent amounts, in the presence of about 2-30% by weight of water, based on the polyamide-forming compounds of group I, under the internal pressure developed in a closed container and condensing a product; (B) removing the water from the condensing stage (A); and (C) completely condensing the product in a second condensing stage with the exclusion of oxygen under normal pressure or under reduced pressure at about 250°-280° C.
Claim 3
Dependent Claim
19 words
The method of claim 1, wherein condensing step (A) is carried out at a pressure of about 14-25 bar.
Claim 4
Dependent Claim
19 words
The method of claim 2, wherein condensing step (C) is carried out at a pressure of about 100-0.01 mbar.
Claim 5
Dependent Claim
27 words
The method of claim 2, wherein said dicarboxylic acid of III has the general formula HOOC--(CH 2 ) x --COOH wherein X is between 4 and 11.
Claim 6
Dependent Claim
25 words
Use of the thermoplastic polyether ester amides of claim 1, for the manufacture of molded components having a high cold impact strength at low temperatures.
Claim 7
Dependent Claim
225 words
Thermoplastic polyether ester amides having solution viscosities of about 1.3 to 2.4 as measured in meta-cresol at 25° C. according to German Industrial Standard 53 727 and having units of the starting components randomly distributed in the polymer chain prepared by the method of: (A) treating at a temperature of about 230°-300° C. a mixture consisting essentially of: I. at least one polyamide forming compound selected from the group consisting of omega-aminocarboxylic acids having at least 10 carbon atoms, lactams having at least 10 carbon atoms, or omega-aminocarboxylic acids and lactams having at least 10 carbon atoms; II. an alpha, omega-dihydroxy-(polytetrahydrofuran) having an average degree of polymerization of between about 2 and 42 or a molecular weight of between 160 and 3,000; and III. at least one organic dicarboxylic acid; in a weight ratio of I to (II+III) of between 30:70 and 98:2 wherein hydroxy and carboxy groups in components II and III are present in equivalent amounts, in the presence of about 2-30% by weight of water, based on the polyamide-forming compounds of Group I, under the internal pressure developed in a closed container and condensing a product; (B) removing the water from the condensing stage (A); and (C) completely condensing the product in a second condensing stage with the exclusion of oxygen under normal pressure or under reduced pressure at about 250°-280° C.
Claim 8
Dependent Claim
225 words
Thermoplastic polyether ester amides having solution viscosities of about 1.3 to 2.4 as measured in meta-cresol at 25° C. according to German Industrial Standard 53 727 and having units of the starting components randomly distributed in the polymer chain prepared by the method of: (A) treating at a temperature of about 230°-300° C. a mixture consisting essentially of: I. at least one polyamide forming compound selected from the group consisting of omega-aminocarboxylic acids having at least 10 carbon atoms, lactams having at least 10 carbon atoms, or omega-aminocarboxylic acids and lactams having at least 10 carbon atoms; II. an alpha, omega-dihydroxy-(polytetrahydrofuran) having an average degree of polymerization of between about 2 and 42 or a molecular weight of between 160 and 3,000; and III. at least one organic dicarboxylic acid; in a weight ratio of I to (II+III) of between 30:70 and 98:2 wherein hydroxy and carboxy groups in components II and III are present in equivalent amounts, in the presence of about 2-30% by weight of water, based on the polyamide-forming compounds of Group I, under the internal pressure developed in a closed container and condensing a product; (B) removing the water from the condensing stage (A); and (C) completely condensing the product in a second condensing stage with the exclusion of oxygen under normal pressure or under reduced pressure at about 250°-280° C.
Claim 9
Dependent Claim
29 words
The polyether ester amides of claim 6, wherein said dicarboxylic acid of III has the general formula HOOC--(CH 2 ) x --COOH wherein x is between 4 and 11.
Claim 10
Dependent Claim
12 words
The polyether ester amides of claim 7, wherein component I is lauryllactam.
Claim 11
Dependent Claim
15 words
The polyether ester amides of claim 7, wherein said solution viscosities are 1.5 to 2.2.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-06-10 | 1983-12-10 | 1984-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-10 | 1987-12-10 | 1988-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-10 | 1991-12-10 | 1992-06-10 | $7700.00 | Window Closed / Lapsed |