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US4413114A
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Aromatic copolyamide containing 3,4'-diphenylene moiety
Assignee: Teijin Ltd
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Filing: 1982-03-30
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Granted: 1983-11-01
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Expires: 2002-03-30
Abstract
Abstract An aromatic copolyamide comprising recurring units (A) of the formula (I), (B) of the formula (II) and (C) of the formula (III): ##STR1## wherein in (I), (II) and (III), Ar 1 is phenylene, naphthylene or biphenylene radicals, each having two valence bonds oriented meta; Ar 2 is phenylene, naphthylene or biphenylene radicals, each having two valence bonds oriented coaxially or in parallel to each other and radicals of the formula (IV): ##STR2## wherein Y 1 and Y 2 are independently ##STR3## and; X 1 , X 2 , X 3 , X 4 , X 5 and X 6 respectively are independently --NH-- and --CO-- radicals, connected to each other to form an amide bond (--NHCO-- or --CHNH--), and the molar proportions of said recurring units (A), (B), and (C) fall within a quadrilateral defined by the co-ordinates P, Q, R and S or on a twice-turned line defined by the co-ordinates Q, R, S and P: P (A 50, B 5, C 45) Q (A 5, B 5, C 90) R (A 5, B 40, C 55) and S (A 50, B 15, C 35) on a triangular composition diagram.
Inventors
- 👤 Keizo Shimada
- 👤 Hiroshi Mera
- 👤 Noriaki Sasaki
- 👤 Akihiro Aoki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:42
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/78; D01F6/80; D01F6/805; C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/32; C08G69/40; C08G69/42
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
259 words
A fiber- or film-forming aromatic copolyamide which comprises at least one recurring unit (A) of the formula (I), at least one recurring unit (B) of the formula (II) and at least one recurring unit (C) of the formula (III): ##STR105## in which formulae (I), (II) and (III), Y 1 represents a divalent radical selected from the group consisting of ##STR106## Ar 1 represents a member selected from the group consisting of phenylene, naphthylene and biphenylene radicals, each having two valence bonds oriented meta; Ar 2 represents a member selected from the group consisting of phenylene, naphthylene and biphenylene radicals, each having two valence bonds oriented coaxially or in parallel to each other and radicals of the formula (IV): ##STR107## wherein Y 2 represents a divalent radical selected from the same group as that set forth above for Y 1 and is the same as or different from Y 1 ; and X 1 and X 2 respectively represent a --NH-- moiety of X 3 , X 4 , X 5 and X 6 respectively represent a moiety --NH-- or --CO-- of an amide group --NHCO-- or --CONH-- and the molar proportions of said recurring units (A), (B) and (C) represented by a triangular composition diagram fall on or within the quadrilateral shown in FIG. 1 and defined by the co-ordinates: P (A 50, B 5, C 45) Q (A 5, B 5, C 90) R (A 5, B 40, C 55) and S (A 50, B 15, C 35) except for the side defined by the coordinates P, Q.
Claim 2
Dependent Claim
259 words
A fiber- or film-forming aromatic copolyamide which comprises at least one recurring unit (A) of the formula (I), at least one recurring unit (B) of the formula (II) and at least one recurring unit (C) of the formula (III): ##STR105## in which formulae (I), (II) and (III), Y 1 represents a divalent radical selected from the group consisting of ##STR106## Ar 1 represents a member selected from the group consisting of phenylene, naphthylene and biphenylene radicals, each having two valence bonds oriented meta; Ar 2 represents a member selected from the group consisting of phenylene, naphthylene and biphenylene radicals, each having two valence bonds oriented coaxially or in parallel to each other and radicals of the formula (IV): ##STR107## wherein Y 2 represents a divalent radical selected from the same group as that set forth above for Y 1 and is the same as or different from Y 1 ; and X 1 and X 2 respectively represent a --NH-- moiety of X 3 , X 4 , X 5 and X 6 respectively represent a moiety --NH-- or --CO-- of an amide group --NHCO-- or --CONH-- and the molar proportions of said recurring units (A), (B) and (C) represented by a triangular composition diagram fall on or within the quadrilateral shown in FIG. 1 and defined by the co-ordinates: P (A 50, B 5, C 45) Q (A 5, B 5, C 90) R (A 5, B 40, C 55) and S (A 50, B 15, C 35) except for the side defined by the coordinates P, Q.
Claim 3
Dependent Claim
49 words
An aromatic copolyamide as claimed in claim 1, wherein the intrinsic viscosity of said copolyamide is in a range of from 1 to 7, determined in a solution of 0.5 g of said copolyamide dissolved in 100 ml of 98% concentrated sulfuric acid, at a temperature of 30° C.
Claim 4
Dependent Claim
21 words
An aromatic copolyamide as claimed in claim 2, wherein said intrinsic viscosity is in a range of from 1.5 to 5.
Claim 5
Dependent Claim
26 words
An aromatic copolyamide as claimed in claim 1, wherein Y 1 in the formula (I) represents a member selected from the group consisting of ##STR108## radicals.
Claim 6
Dependent Claim
18 words
An aromatic copolyamide as claimed in claim 1, wherein Y 1 in the formula (I) represents --O-- radical.
Claim 7
Dependent Claim
34 words
An aromatic copolyamide as claimed in claim 1, wherein Ar 1 in formula (II) represents a member selected from the group consisting of phenylene and naphthylene radicals, each having two valence bonds oriented meta.
Claim 8
Dependent Claim
42 words
An aromatic copolyamide as claimed in claim 1, wherein Ar 2 in the formula (III) represents a member selected from the group consisting of phenylene, naphthylene and biphenylene radicals, each having two valence bonds oriented coaxially or in parallel to each other.
Claim 9
Dependent Claim
37 words
An aromatic copolyamide as claimed in claim 1, wherein Y 1 in formula (I) represents an --O-- radical, Ar 1 in formula (II) represents a m-phenylene radical and Ar 2 in formula (III) represents a p-phenylene radical.
Claim 10
Dependent Claim
13 words
A fiber or filament comprising the aromatic copolyamide as claimed in claim 1.
Claim 11
Dependent Claim
11 words
A film comprising the aromatic copolyamide as claimed in claim 1.
References Cited (Backward Citations)
US4075172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-31 | 1987-05-02 | 1987-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-31 | 1991-05-02 | 1991-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-31 | 1995-05-02 | 1995-11-01 | $7700.00 | Window Closed / Lapsed |