Patent US4749744A successfully refreshed from Google Patents.
US4749744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin composition of saponified ethylenic copolymer
Assignee: Ube Corp
•
Filing: 1986-07-08
•
Granted: 1988-06-07
•
Expires: 2006-07-08
Abstract
Abstract A resin composition of a saponified product of an ethylenic copolymer, which comprises 100 parts by weight of a saponified product of a copolymer of ethylene and vinyl acetate having 5 to 50 mol % of recurring units of -CH2-CH2- based on the ethylene monomer and also having a saponification degree of about 80% or more and 5 to 150 parts by weight of a polyamide having a relative viscosity of 2.1 to 3.5 and being subjected to terminal end modification leaving carboxylic end groups of 3x10-5 equivalent/g or less. The resin composition of the present invention has the gas barrier property, rigidity and heat resistance, and also is improved in pinhole resistance or impact resistance, and therefore it can be suitably used as packaging materials or functional parts.
Inventors
- 👤 Hirozo Uejo
- 👤 Kenji Shimizu
- 👤 Kazunobu Sano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:18
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0846; C08L23/0853; C08L29/00; C08L29/02; C08L29/04; C08L77/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
103 words
A resin composition of a saponified product of an ethylenic copolymer, comprising 100 parts by weight of a saponified product of a copolymer of ethylene and vinyl acetate having 5 to 50 mol % of recurring units of --CH 2 --CH 2 -- based on an ethylene monomer and a saponification degree of about 80% or more; and 5 to 150 parts by weight of a polyamide having a relative viscosity of 2.1 to 3.5, wherein said polyamide having been subjected to carboxylic end group modification with monoamine or diamine has a carboxylic acid end group amount of 3×10 -5 equivalent/g or less.
Claim 2
Dependent Claim
103 words
A resin composition of a saponified product of an ethylenic copolymer, comprising 100 parts by weight of a saponified product of a copolymer of ethylene and vinyl acetate having 5 to 50 mol % of recurring units of --CH 2 --CH 2 -- based on an ethylene monomer and a saponification degree of about 80% or more; and 5 to 150 parts by weight of a polyamide having a relative viscosity of 2.1 to 3.5, wherein said polyamide having been subjected to carboxylic end group modification with monoamine or diamine has a carboxylic acid end group amount of 3×10 -5 equivalent/g or less.
Claim 3
Dependent Claim
36 words
The resin composition of a saponified product of an ethylenic copolymer according to claim 1, wherein said saponified product of the copolymer of ethylene and vinylacetate has 10 to 45 mol % of the recurring units.
Claim 4
Dependent Claim
23 words
The resin composition of a saponified product of an ethylenic copolymer according to claim 1, wherein said saponification degree is 90% or more.
Claim 5
Dependent Claim
44 words
The resin composition of a saponified product of an ethylenic copolymer according to claim 1, wherein said saponified product of the copolymer of ethylene and vinyl acetate has an intrinsic viscosity of 0.07 to 0.17 in a solution of 15 wt. % water-containing phenol.
Claim 6
Dependent Claim
33 words
The resin composition of a saponified product of an ethylenic copolymer according to claim 1, wherein said saponified product of the ethylenic copolymer comprises 10 to 100 parts by weight of the polyamide.
Claim 7
Dependent Claim
24 words
The resin composition of a saponified product of an ethylenic copolymer according to claim 1, wherein said relative viscosity ranges from 2.1 to 3.2.
Claim 8
Dependent Claim
28 words
The resin composition of a saponified product of an ethylenic copolymer according to claim 1, wherein said polyamide is subjected to modification of end groups by a monoamine.
Claim 9
Dependent Claim
28 words
The resin composition of a saponified product of an ethylenic copolymer according to claim 1, wherein said polyamide is subjected to modification of end groups by a diamine.
Claim 10
Dependent Claim
24 words
The resin composition of a saponified product of an ethylenic copolymer according to claim 7, wherein said monoamine is an aliphatic or aromatic monoamine.
Claim 11
Dependent Claim
24 words
The resin composition of a saponified product of an ethylenic copolymer according to claim 8, wherein said diamine is an aliphatic or aromatic diamine.
Claim 12
Dependent Claim
33 words
The resin composition of a saponified product of an ethylenic copolymer according to claim 2, wherein said modification is carried out by adding the monoamine or the diamine during polymerization of the polyamide.
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) | 1991-06-07 | 1991-12-07 | 1992-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-07 | 1995-12-07 | 1996-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-07 | 1999-12-07 | 2000-06-07 | $7700.00 | Window Closed / Lapsed |