US4376856A
Expired / Lapsed
US
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Polyether-ester amide and process for preparation thereof
Assignee: Toray Industries Inc
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Filing: 1981-11-16
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Granted: 1983-03-15
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Expires: 2001-11-16
Abstract
Abstract An improved polyether-ester amide is prepared by mixing (A) an aminocarboxylic acid, (B) a poly(alkylene oxide)glycol having a number-average molecular weight of 300 to 6,000 and (C) a dicarboxylic acid at such a mixing ratio that the amount of the component (B) is 5 to 90% by weight based on the total amount and the amino, carboxyl and hydroxyl groups in the mixture satisfy the following requirement: 0.95≦[COOH]/([NH.sub.2 ]+[OH])≦1.05 heating the mixture at 150° to 260° C. and then polymerizing the mixture at 220° to 300° C. under high vacuum. This polyether-ester amide is excellent in the impact resistance and rubbery elasticity.
Inventors
- 👤 Chiaki Tanaka
- 👤 Shinobu Nakashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:23
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/40; C08G69/44
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
110 words
A polyether-ester amide obtained by mixing an aminocarboxylic acid (A) having 6 to 20 carbon atoms, a poly(alkylene oxide)glycol (B) having a number-average molecular weight of 300 to 6,000 and a dicarboxylic acid (C) having 4 to 20 carbon atoms, heating the mixture without the addition of water, under normal pressure at 150° to 260° C. and then polymerizing the mixture at 220° to 300° C. under high vacuum, wherein the amino, carboxyl and hydroxyl groups in the mixture of the components (A), (B) and (C) satisfy the following requirement: 0.95≦[COOH]/([NH.sub.2 ]+[OH])≦1.05 and the amount of the component (B) is 5 to 90% by weight based on the total amount.
Claim 2
Dependent Claim
110 words
A polyether-ester amide obtained by mixing an aminocarboxylic acid (A) having 6 to 20 carbon atoms, a poly(alkylene oxide)glycol (B) having a number-average molecular weight of 300 to 6,000 and a dicarboxylic acid (C) having 4 to 20 carbon atoms, heating the mixture without the addition of water, under normal pressure at 150° to 260° C. and then polymerizing the mixture at 220° to 300° C. under high vacuum, wherein the amino, carboxyl and hydroxyl groups in the mixture of the components (A), (B) and (C) satisfy the following requirement: 0.95≦[COOH]/([NH.sub.2 ]+[OH])≦1.05 and the amount of the component (B) is 5 to 90% by weight based on the total amount.
Claim 3
Dependent Claim
19 words
A polyether-ester amide as set forth in claim 1, wherein the aminocarboxylic acid has 10 to 12 carbon atoms.
Claim 4
Dependent Claim
22 words
A polyether-ester amide as set forth in claim 1, wherein the number-average molecular weight of the poly(alkylene oxide)glycol is 1,000 to 4,000.
Claim 5
Dependent Claim
23 words
A polyether-ester amide as set forth in claim 1, wherein the number-average molecular weight of the poly(alkylene oxide) glycol is 500 to 1,500.
Claim 6
Dependent Claim
27 words
A polyether-ester amide as set forth in claim 1, wherein the amount of the component (B) is 5 to 25% by weight based on the total amount.
Claim 7
Dependent Claim
27 words
A polyether-ester amide as set forth in claim 1, wherein the amount of the component (B) is 25 to 75% by weight based on the total amount.
Claim 8
Dependent Claim
27 words
A polyether-ester amide as set forth in claim 1, wherein the amount of the component (B) is 75 to 90% by weight based on the total amount.
Claim 9
Dependent Claim
18 words
A polyether-ester amide as set forth in claim 1, wherein the heating temperature is 180° to 230° C.
Claim 10
Dependent Claim
18 words
A polyether-ester amide as set forth in claim 1, wherein the polymerization temperature is 220° to 280° C.
Claim 11
Dependent Claim
25 words
A polyether-ester amide as set forth in claim 1, wherein the high vacuum is an atmosphere maintained under a pressure lower than about 15 mmHg.
Claim 12
Dependent Claim
25 words
A polyether-ester amide as set forth in claim 1, wherein the high vacuum is an atmosphere maintained under a pressure lower than about 5 mmHg.
Claim 13
Dependent Claim
32 words
A polyether-ester amide as set forth in claim 1, wherein the aminocarboxylic acid has 10 or 11 carbon atoms, the poly(alkylene oxide)glycol is poly(tetramethylene oxide)glycol and the dicarboxylic acid is terephthalic acid.
Claim 14
Dependent Claim
115 words
A process for the preparation of polyether-ester amides, which comprises mixing an aminocarboxylic acid (A) having 6 to 20 carbon atoms, a poly(alkylene oxide)glycol (B) having a number-average molecular weight of 300 to 6,000 and a dicarboxylic acid (C) having 4 to 20 carbon atoms, heating the mixture without the addition of water, under normal pressure at 150° to 260° C. and then polymerizing the mixture at 220° to 300° C. under high vacuum, wherein the amino, carboxyl and hydroxyl groups in the mixture of the components (A), (B) and (C) satisfy the following requirement: 0.95≦[COOH]/([NH.sub.2 ]+[OH]≦1.05 and the amount of the component (B) is 5 to 90% by weight based on the total amount.
Claim 15
Dependent Claim
115 words
A process for the preparation of polyether-ester amides, which comprises mixing an aminocarboxylic acid (A) having 6 to 20 carbon atoms, a poly(alkylene oxide)glycol (B) having a number-average molecular weight of 300 to 6,000 and a dicarboxylic acid (C) having 4 to 20 carbon atoms, heating the mixture without the addition of water, under normal pressure at 150° to 260° C. and then polymerizing the mixture at 220° to 300° C. under high vacuum, wherein the amino, carboxyl and hydroxyl groups in the mixture of the components (A), (B) and (C) satisfy the following requirement: 0.95≦[COOH]/([NH.sub.2 ]+[OH]≦1.05 and the amount of the component (B) is 5 to 90% by weight based on the total amount.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-14 | 1986-09-13 | 1987-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-14 | 1990-09-13 | 1991-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-14 | 1994-09-13 | 1995-03-15 | $7700.00 | Window Closed / Lapsed |