US4670349A
Expired / Lapsed
US
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Adhesive resin composition
Assignee: Mitsui Chemicals Inc
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Filing: 1985-12-17
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Granted: 1987-06-02
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Expires: 2005-12-17
Abstract
Abstract An adhesive resin composition comprising (A) 100 parts by weight of a polymer having a crystallinity, determined by X-ray diffractometry, of not more than 40% selected from the group consisting of an ethylene/vinyl acetate copolymer and ethylene/alpha-olefin random copolymers, (B) 1 to 50 parts by weight of modified polyethylene having a melt flow rate of 0.01 to 50 g/10 minutes and containing 0.01 to 10% by weight of an unsaturated carboxylic acid or its derivative grafted thereto, and (C) 1 to 125 parts by weight of a hydrogenated aromatic petroleum resin in which at least 70% of the romatic ring is hydrogenated; provided that the total amount of the modified polyethylene (B) and the hydrogenated aromatic petroleum resin (C) is not more than 150 parts by weight.
Inventors
- 👤 Mikio Nakagawa
- 👤 Koichiro Sato
- 👤 Kuniaki Kanemoto
- 👤 Akito Nishimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:48
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/02; C09J123/04; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/24; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31928
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
161 words
An adhesive resin composition having good adhesion to both styrene resins and saponified ethylene/vinyl acetate copolymers comprising (A) 100 parts by weight of a polymer having a crystallinity, determined by X-ray diffractometry, of not more than 40% selected from the group consisting of an ethylene/vinyl acetate copolymer having a melt flow rate of 0.1 to 30 g/10 min. and ethylene/alpha-olefin random copolymers having a melt flow rate of 0.1 to 50 g/10 min., (B) 1 to 50 parts by weight of modified polyethylene having a melt flow rate of 0.01 to 50 g/10 minutes and containing 0.01 to 10% by weight of an unsaturated carboxylic acid or its derivative grafted thereto, and (C) 1 to 125 parts by weight of a hydrogenated aromatic petroleum resin in which at least 70% of the aromatic ring is hydrogenated; provided that the total amount of the modified polyethylene (B) and the hydrogenated aromatic petroleum resin (C) is not more than 150 parts by weight.
Claim 2
Dependent Claim
161 words
An adhesive resin composition having good adhesion to both styrene resins and saponified ethylene/vinyl acetate copolymers comprising (A) 100 parts by weight of a polymer having a crystallinity, determined by X-ray diffractometry, of not more than 40% selected from the group consisting of an ethylene/vinyl acetate copolymer having a melt flow rate of 0.1 to 30 g/10 min. and ethylene/alpha-olefin random copolymers having a melt flow rate of 0.1 to 50 g/10 min., (B) 1 to 50 parts by weight of modified polyethylene having a melt flow rate of 0.01 to 50 g/10 minutes and containing 0.01 to 10% by weight of an unsaturated carboxylic acid or its derivative grafted thereto, and (C) 1 to 125 parts by weight of a hydrogenated aromatic petroleum resin in which at least 70% of the aromatic ring is hydrogenated; provided that the total amount of the modified polyethylene (B) and the hydrogenated aromatic petroleum resin (C) is not more than 150 parts by weight.
Claim 3
Dependent Claim
32 words
The composition of claim 1 wherein the component (A) is the ethylene/vinyl acetate copolymer and the ethylene/vinyl acetate copolymer (A) has a vinyl acetate unit content of 5 to 40% by weight.
Claim 4
Dependent Claim
31 words
The composition of claim 1 wherein the component (A) is the ethylene/alpha-olefin random copolymer and the ethylene/alpha-olefin random compolymer (A) has an ethylene unit content of 30 to 95 mole %.
Claim 5
Dependent Claim
35 words
The composition of claim 1 wherein the component (A) is the ethylene/alpha-olefin random copolymer and the ethylene/alpha-olefin random copolymer (A) is a random copolymer of ethylene with an alpha-olefin having 3 to 20 carbon atoms.
Claim 6
Dependent Claim
21 words
The composition of claim 1 wherein the polymer (A) has a crystallinity, determined by X-ray diffractometry, of not more than 30%.
Claim 7
Dependent Claim
21 words
The composition of claim 1 wherein the modified polyethylene (B) has a melt flow rate of 0.5 to 10 g/10 min.
Claim 8
Dependent Claim
26 words
The composition of claim 1 wherein the modified polyethylene (B) contains 0.1 to 5% by weight of the unsaturated carboxylic acid or its derivative grafted thereto.
Claim 9
Dependent Claim
20 words
The composition of claim 1 wherein at least 80% of the aromatic group of the aromatic petroleum resin is hydrogenated.
Claim 10
Dependent Claim
21 words
The composition of claim 1 wherein the hydrogenated aromatic petroleum resin (C) has a softening point of 80° to 150° C.
Claim 11
Dependent Claim
21 words
The composition of claim 1 wherein the hydrogenated aromatic petroleum resin (C) has a bromine number of not more than 10.
Claim 12
Dependent Claim
37 words
The composition of claim 1 comprising 100 parts by weight of the polymer (A), 2 to 23 parts by weight of the modified polyethylene and 3 to 46% by weight of the hydrogenated aromatic petroleum resin (C).
Claim 13
Dependent Claim
184 words
A laminated structure which comprises (1) a styrene resin layer, (2) a saponified olefin/vinyl acetate polymer layer, and (3) an adhesive resin layer bonding said layers (1) and (2), said adhesive resin layer being formed by an adhesive resin composition comprising (A) 100 parts by weight of a polymer having a crystallinity, determined by X-ray diffractometry, of not more than 40% selected from the group consisting of an ethylene/vinyl acetate copolymer having a melt flow rate of 0.1 to 30 g/10 min, and ethylene/alpha-olefin random copolymers having melt flow rate of 0.1 to 50 g/10 min., (B) 1 to 50 parts by weight of modified polyethylene having a melt flow rate of 0.01 to 50 g/10 minutes and containing 0.01 to 10% by weight of an unsaturated carboxylic acid or its derivative grafted thereto, and (C) 1 to 125 parts by weight of a hydrogenated aromatic petroleum resin in which at least 70% of the aromatic ring is hydrogenated; provided that the total amount of the modified polyethylene (B) and the hydrogenated aromatic petroleum resin (C) is not more than 150 parts by weight.
Claim 14
Dependent Claim
184 words
A laminated structure which comprises (1) a styrene resin layer, (2) a saponified olefin/vinyl acetate polymer layer, and (3) an adhesive resin layer bonding said layers (1) and (2), said adhesive resin layer being formed by an adhesive resin composition comprising (A) 100 parts by weight of a polymer having a crystallinity, determined by X-ray diffractometry, of not more than 40% selected from the group consisting of an ethylene/vinyl acetate copolymer having a melt flow rate of 0.1 to 30 g/10 min, and ethylene/alpha-olefin random copolymers having melt flow rate of 0.1 to 50 g/10 min., (B) 1 to 50 parts by weight of modified polyethylene having a melt flow rate of 0.01 to 50 g/10 minutes and containing 0.01 to 10% by weight of an unsaturated carboxylic acid or its derivative grafted thereto, and (C) 1 to 125 parts by weight of a hydrogenated aromatic petroleum resin in which at least 70% of the aromatic ring is hydrogenated; provided that the total amount of the modified polyethylene (B) and the hydrogenated aromatic petroleum resin (C) is not more than 150 parts by weight.
References Cited (Backward Citations)
US3437629A
Cited
US3595993A
Cited
US3701760A
Cited
US3652725A
Cited
US3868433A
Cited
JPS53127546A
Cited
US4299745A
Cited
US4299930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-01 | 1990-12-01 | 1991-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-01 | 1994-12-01 | 1995-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-01 | 1998-12-01 | 1999-06-02 | $7700.00 | Window Closed / Lapsed |