EP0188901A2
Expired / Lapsed
EP
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Adhesive resin composition
Assignee: Mitsui Chemicals Inc
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Filing: 1985-12-19
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Granted: —
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Expires: 2005-12-19
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
EP
Data Source
google_patents
Last Synchronized
2026-10-31 23:18
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/02; C09J123/04; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/24
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
122 words
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 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 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
122 words
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 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 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
24 words
A composition according to claim 1 wherein the ethylene-vinyl acetate copolymer (A) has a vinyl acetate unit content of 5 to 40% by weight.
Claim 4
Dependent Claim
25 words
A composition according to claim 1 or 2 wherein the ethylene/vinyl acetate copolymer (A) has a melt flow rate of 0.1 to 30 g/10 min.
Claim 5
Dependent Claim
22 words
A composition according to claim 1 wherein the ethylene/alpha-olefin random copolymer (A) has an ethylene unit content of 30 to 95 mole%.
Claim 6
Dependent Claim
25 words
A composition according to claim 1 or 4 wherein the ethylene/alpha-olefin random copolymer (A) has a melt flow rate of 0.1 to 50 g/10 min.
Claim 7
Dependent Claim
29 words
A composition according to claim 1, 4 or 5 wherein alpha-olefin random copolymer (A) is a random copolymer of ethylene with an alpha-olefin having 3 to 20 carbon atoms.
Claim 8
Dependent Claim
27 words
A composition according to any one of the , preceding claims wherein the polymer (A) has a crystallinity, determined by X-ray diffractometry, of not more than 30%.
Claim 9
Dependent Claim
26 words
A composition according to any one of the preceding claims wherien the modified polyethylene (B) has a melt flow rate of 0.5 to 10 g/10 min.
Claim 10
Dependent Claim
31 words
A composition according to any one of the preceding claims wherein the modified polyethylene (B) contains 0.1 to 5% by weight of the unsaturated carboxylic acid or its derivative grafted thereto.
Claim 11
Dependent Claim
26 words
A composition according to any one of the preceding claims wherein at least 80% of the aromatic group of the aromatic petroleum resin (C) is hydrogenated.
Claim 12
Dependent Claim
25 words
A composition according to any one of the preceding claims wherein the hydrogenated aromatic petroleum resin (C) has a softening point of 80 to 150°C.
Claim 13
Dependent Claim
26 words
A composition according to any one of the preceding claims wherein the hydrogenated aromatic petroleum resin (C) has a bromine number of not more than 10.
Claim 14
Dependent Claim
44 words
A composition according to any one of the preceding claims comprising 100 parts by weight of the polymer (A), 2 to 23 parts by weight of the modified polyethylene (B) and 3 to 46 parts by weight of the hydrogenated aromatic petroleum resin (C).
Claim 15
Dependent Claim
33 words
Use of the composition as claimed in any one of the preceding claims in bonding a layer of a styrene-type resin to a layer of a saponified product of an ethylene/vinyl acetate copolymer.
References Cited (Backward Citations)
No citation records indexed.
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