US4438240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamide elastomer
Assignee: Toray Industries Inc
•
Filing: 1983-05-25
•
Granted: 1984-03-20
•
Expires: 2003-05-25
Abstract
Abstract Provided is a polyether-ester-amide consisting essentially of about 5 to 50 weight percent of polaymide segment (A) and about 95 to 50 weight percent of polyether ester segment (B), and having a melting point not lower than 160° C., a Shore hardness in the range of 80A to 45D, a tensile modulus in the range of 100 to 1,000 kg/cm 2 and an elastic recovery at 50% elongation of not less than 70%, said polyamide segment (A) having been obtained from: a C 6 -C 20 aliphatic diamine (A-1); and at least one dicarboxylic acid (A-2) selected from the group consisting of C 6 -C 15 aliphatic dicarboxylic acids, terephthalic acid and hexahydroterephthalic acid, provided the total number of carbon atoms of said diamine and said dicarboxylic acid is not less than 16, said polyether ester segment (B) having been obtained from: a poly(alkylene oxide) glycol (B-1) having a ratio of carbon atom number to oxygen atom number of not smaller than 2.3 and having a number average molecular weight in the range of 300 to 5,000; and a C 4 -C 20 dicarboxylic acid (B-2).
Inventors
- 👤 Chiaki Tanaka
- 👤 Shinobu Nakashima
- 👤 Makoto Kondow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:02
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/44
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
184 words
A polyether-ester-amide consisting essentially of about 5 to 50 weight percent of polyamide segment (A) and about 95 to 50 weight percent of polyether ester segment (B), and having a melting point not lower than 160° C., a Shore hardness in the range of 80A to 45D, a tensile modulus in the range of 100 to 1,000 kg/cm 2 and an elastic recovery at 50% elongation of not less than 70%, said polyamide segment (A) having been obtained from: a C 6 -C 20 aliphatic diamine (A-1): and at least one dicarboxylic acid (A-2) selected from the group consisting of C 6 -C 15 aliphatic dicarboxylic acids, terephthalic acid and hexahydroterephthalic acid, provided the total number of carbon atoms of said diamine and said dicarboxylic acid is not less than 16, said polyether ester segment (B) having been obtained from: a poly(alkylene oxide) glycol (B-1) having a ratio of carbon atom number to oxygen atom number of not smaller than 2.3 and having a number average molecular weight in the range of 300 to 5,000; and a C 4 -C 20 dicarboxylic acid (B-2).
Claim 2
Dependent Claim
184 words
A polyether-ester-amide consisting essentially of about 5 to 50 weight percent of polyamide segment (A) and about 95 to 50 weight percent of polyether ester segment (B), and having a melting point not lower than 160° C., a Shore hardness in the range of 80A to 45D, a tensile modulus in the range of 100 to 1,000 kg/cm 2 and an elastic recovery at 50% elongation of not less than 70%, said polyamide segment (A) having been obtained from: a C 6 -C 20 aliphatic diamine (A-1): and at least one dicarboxylic acid (A-2) selected from the group consisting of C 6 -C 15 aliphatic dicarboxylic acids, terephthalic acid and hexahydroterephthalic acid, provided the total number of carbon atoms of said diamine and said dicarboxylic acid is not less than 16, said polyether ester segment (B) having been obtained from: a poly(alkylene oxide) glycol (B-1) having a ratio of carbon atom number to oxygen atom number of not smaller than 2.3 and having a number average molecular weight in the range of 300 to 5,000; and a C 4 -C 20 dicarboxylic acid (B-2).
Claim 3
Dependent Claim
52 words
The polyether-ester-amide of claim 1, wherein said polyamide segment (A) has been obtained from a C 6 -C 20 aliphatic diamine (A-1) and at least one C 6 -C 15 aliphatic dicarboxylic acid (A-2), the total number of carbon atoms of said diamine and said dicarboxylic acid being not less than 16.
Claim 4
Dependent Claim
34 words
The polyether-ester-amide of claim 1, wherein said aliphatic diamine (A-1) of said polyamide segment (A) is hexamethylenediamine, and said aliphatic dicarboxylic acid is at least one member selected from sebacic acid and dodecanedioic acid.
Claim 5
Dependent Claim
25 words
The polyether-ester-amide of claim 1, wherein said aliphatic diamine (A-1) of said polyamide segment (A) is at least one member selected from undecamethylenediamine and dodecamethylenediamine.
Claim 6
Dependent Claim
56 words
The polyether-ester-amide of claim 1, wherein said polyamide segment (A) has been obtained from an equimolar amount of at least one diamine (A-1) selected from undecamethylenediamine and dodecamethylenediamine and at least one dicarboxylic acid (A-2) selected from terephthalic acid and hexahydroterephthalic acid, or obtained from a salt of said diamine (A-1) with said dicarboxylic acid (A-2).
Claim 7
Dependent Claim
41 words
The polyether-ester-amide of claim 1, wherein said aliphatic diamine (A-1) of said polyamide segment (A) is at least one member selected from undecamethylenediamine and dodecamethylenediamine, and said dicarboxylic acid (A-2) is at least one C 6 -C 10 aliphatic dicarboxylic acid.
Claim 8
Dependent Claim
43 words
The polyether-ester-amide of claim 1, wherein the dicarboxylic acid (B-2) as a constituent of said polyether ester segment (B) is the same dicarboxylic acid as the dicarboxylic acid (A-2) as a constituent of said polyamide segment (A), or alternatively it is terephthalic acid.
Claim 9
Dependent Claim
37 words
The polyether-ester-amide of claim 1, wherein the dicarboxylic acid (B-2) as a constituent of said polyether ester segment (B) is the same dicarboxylic acid as the dicarboxylic acid (A-2) as a constituent of said polyamide segment (A).
Claim 10
Dependent Claim
22 words
The polyether-ester-amide of claim 1, wherein the dicarboxylic acid (B-2) as a constituent of said polyether ester segment (B) is terephthalic acid.
Claim 11
Dependent Claim
24 words
The polyether-ester-amide of claim 1, wherein the number average molecular weight of said poly(alkylene oxide) glycol is in the range of 500 to 3,000.
Claim 12
Dependent Claim
27 words
The polyether-ester-amide of claim 1, wherein said poly(alkylene oxide) glycol is poly(tetramethylene oxide) glycol having a number average molecular weight in the range of 500 to 2,500.
Claim 13
Dependent Claim
35 words
The polyether-ester-amide of claim 1 consisting essentially of about 10 to 50 weight percent of said polyamide segment (A) and about 90 to 50 weight percent of said polyether ester segment (B) both linked together.
Claim 14
Dependent Claim
34 words
The polyether-ester-amide of claim 1 consisting essentially of about 20 to 45 weight percent of said polyamide segment (A) and about 80 to 55 weight percent of said polyester segment (B) both linked together.
Claim 15
Dependent Claim
206 words
A process for preparing a polyether-ester-amide consisting essentially of about 5 to 50 weight percent of polyamide segment (A) and about 95 to 50 weight percent of polyether ester segment (B), which process comprises the steps of: charging into a vessel capable of being heated both a substantially equimolar amount of at least one C 6 -C 20 aliphatic diamine (A-1) and at least one dicarboxylic acid (A-2) selected from the group consisting of C 6 -C 15 aliphatic dicarboxylic acids, terephthalic acid and hexahydroterephthalic acid, or a salt formed from said aliphatic diamine (A-1) and said dicarboxylic acid (A-2), and a substantially equimolar amount of a poly(alkylene oxide) glycol (B-1) and at least one C 4 -C 20 dicarboxylic acid (B-2), said poly(alkylene oxide) glycol (B-1) having a ratio of carbon atom number to oxygen atom number of not less than 2.3 and having a number average molecular weight in the range of 300 to 5,000, followed by heating for homogenization at a temperature in the range of 150° to 260° C. under stirring; and heating the homogenized reaction mixture at a temperature in the range of 220° to 300° C. under a high vacuum not greater than 15 mmHg for polycondensation into said polyether-ester-amide.
Claim 16
Dependent Claim
206 words
A process for preparing a polyether-ester-amide consisting essentially of about 5 to 50 weight percent of polyamide segment (A) and about 95 to 50 weight percent of polyether ester segment (B), which process comprises the steps of: charging into a vessel capable of being heated both a substantially equimolar amount of at least one C 6 -C 20 aliphatic diamine (A-1) and at least one dicarboxylic acid (A-2) selected from the group consisting of C 6 -C 15 aliphatic dicarboxylic acids, terephthalic acid and hexahydroterephthalic acid, or a salt formed from said aliphatic diamine (A-1) and said dicarboxylic acid (A-2), and a substantially equimolar amount of a poly(alkylene oxide) glycol (B-1) and at least one C 4 -C 20 dicarboxylic acid (B-2), said poly(alkylene oxide) glycol (B-1) having a ratio of carbon atom number to oxygen atom number of not less than 2.3 and having a number average molecular weight in the range of 300 to 5,000, followed by heating for homogenization at a temperature in the range of 150° to 260° C. under stirring; and heating the homogenized reaction mixture at a temperature in the range of 220° to 300° C. under a high vacuum not greater than 15 mmHg for polycondensation into said polyether-ester-amide.
Claim 17
Dependent Claim
19 words
The process of claim 14, wherein said dicarboxylic acid (A-2) is a C 6 -C 15 aliphatic dicarboxylic acid.
Claim 18
Dependent Claim
28 words
The process of claim 14, wherein said diamine (A-1) is hexamethylenediamine, and said dicarboxylic acid (A-2) is at least one member selected from sebacic acid and dodecanedioic acid.
Claim 19
Dependent Claim
19 words
The process of claim 14, wherein said diamine (A-1) is at least one member selected from undecamethylenediamine and dodecamethylenediamine.
Claim 20
Dependent Claim
36 words
The process of claim 14, wherein said diamine (A-1) is at least one member selected from undecamethylenediamine and dodecamethylenediamine, and said dicarboxylic acid (A-2) is at least one member selected from terephthalic acid and hexahydroterephthalic acid.
Claim 21
Dependent Claim
35 words
The process of claim 14, wherein said diamine (A-1) is at least one member selected from undecamethylenediamine and dodecamethylenediamine, and said dicarboxylic acid (A-2) is at least one C 6 -C 10 aliphatic dicarboxylic acid.
Claim 22
Dependent Claim
26 words
The process of claim 14, wherein said dicarboxylic acid (B-2) is the same dicarboxylic acid as said dicarboxylic acid (A-2), or alternatively it is terephthalic acid.
References Cited (Backward Citations)
US3946089A
Cited
US4081428A
Cited
US4145372A
Cited
US4053441A
Cited
US4208493A
Cited
US4376856A
Cited
US4361680A
Cited
US4328331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-20 | 1987-09-19 | 1988-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-20 | 1991-09-19 | 1992-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-20 | 1995-09-19 | 1996-03-20 | $7700.00 | Window Closed / Lapsed |