US4500677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin composition excellent in drawability
Assignee: Toyo Seikan Group Holdings Ltd
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Filing: 1983-01-25
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Granted: 1985-02-19
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Expires: 2003-01-25
Abstract
Abstract Disclosed is a resin composition excellent in the drawability, which comprises (A) a saponified ethylene-vinyl ester copolymer having an ethylene content of 20 to 55 mole % and a saponification degree of at least 95%, (B) a saponified ethylene-vinyl ester copolymer having an ethylene content of 25 to 60 mole % and a saponification degree of at least 90%, the ethylene content of the saponified copolymer (B) being higher by at least 3 mole % than the ethylene content of the saponified copolymer (A), and (C) a polyamide, wherein the weight ratio of the saponified copolymer (A) to the saponified copolymer (B) is in the range of from 90/10 to 10/90 and the weight ratio of the sum of the saponified copolymers (A) and (B) to the polyamide (C) is in the range of from 95/5 to 5/95.
Inventors
- 👤 Yoshitsugu Maruhashi
- 👤 Fumio Kano
- 👤 Muneki Yamada
- 👤 Sadao Hirata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:25
CPC Classifications
C; C08; C08L; C08L29/00; C08L29/02; C08L29/04; C08L77/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906; Y10T428/31909; Y10T428/31935; Y10T428/31938
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
141 words
A resin composition excellent in the drawability, which comprises (A) a saponified ethylene-vinyl ester copolymer having an ethylene content of 20 to 55 mole % and a saponification degree of at least 95%, (B) a saponified ethylene-vinyl ester copolymer having an ethylene content of 25 to 60 mole % and a saponification degree of at least 90%, the ethylene content of the saponified copolymer (B) being higher by at least 3 mole % than the ethylene content of the saponified copolymer (A), and (C) a polyamide having a film-forming molecular weight, wherein the weight ratio of the saponified copolymer (A) to the saponified copolymer (B) is in the range of from 90/10 to 10/90 and the weight ratio of the sum of the saponified copolymers (A) and (B) to the polyamide (C) is in the range of from 95/5 to 5/95.
Claim 2
Dependent Claim
141 words
A resin composition excellent in the drawability, which comprises (A) a saponified ethylene-vinyl ester copolymer having an ethylene content of 20 to 55 mole % and a saponification degree of at least 95%, (B) a saponified ethylene-vinyl ester copolymer having an ethylene content of 25 to 60 mole % and a saponification degree of at least 90%, the ethylene content of the saponified copolymer (B) being higher by at least 3 mole % than the ethylene content of the saponified copolymer (A), and (C) a polyamide having a film-forming molecular weight, wherein the weight ratio of the saponified copolymer (A) to the saponified copolymer (B) is in the range of from 90/10 to 10/90 and the weight ratio of the sum of the saponified copolymers (A) and (B) to the polyamide (C) is in the range of from 95/5 to 5/95.
Claim 3
Dependent Claim
77 words
A resin composition as set forth in claim 1, wherein the saponified copolymer (A) is a saponified ethylene-vinyl ester copolymer having an ethylene content of 25 to 50 mole % and the saponified copolymer (B) is a saponified ethylene-vinyl ester copolymer having an ethylene content of 30 to 55 mole %, and the ethylene content of the saponified copolymer (B) is higher by at least 5 mole % than the ethylene content of the saponified copolymer (A).
Claim 4
Dependent Claim
35 words
A resin composition as set forth in claim 1, wherein the polyamide (C) is a homopolyamide or copolyamide having 3 to 30 amide groups per 100 carbon atoms in the polyamide, or a blend thereof.
Claim 5
Dependent Claim
31 words
A resin composition as set forth in claim 1, wherein the polyamide (C) is a copolyamide comprising nylon 6 and nylon 6,6 at a weight ratio of from 99/1 to 70/30.
Claim 6
Dependent Claim
27 words
A resin composition as set forth in claim 1, wherein the saponified copolymers (A) and (B) are contained at a weight ratio of from 80/20 to 20/80.
Claim 7
Dependent Claim
40 words
A resin composition as set forth in claim 1, wherein the weight ratio of the total amount of the saponified copolymers (A) and (B) to the amount of the polyamide (C) is in the range of from 80/20 to 5/95.
Claim 8
Dependent Claim
48 words
A resin composition as set forth in claim 1 wherein said polyamide (C) has a relative viscosity in the range of from 1.2 to 6.0 as measured at 20° C. with respect to a solution of 1 gram of the polyamide in 100 cc of 98% sulfuric acid.
Claim 9
Dependent Claim
59 words
A resin composition as set forth in claim 2 wherein the saponified copolymers (A) and (B) are contained at a weight ratio of from 80/20 to 20/80 and wherein the weight ratio of the total amount of the saponified copolymers (A) and (B) to the amount of the polyamide (C) is in the range of from 80/20 to 5/95.
Claim 10
Dependent Claim
25 words
A resin composition as set forth in claim 8 wherein the saponified copolymers (A) and (B) are contained at a weight ratio of about 50/50.
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) | 1988-02-19 | 1988-08-20 | 1989-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-19 | 1992-08-20 | 1993-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-19 | 1996-08-20 | 1997-02-19 | $7700.00 | Window Closed / Lapsed |