EP0177762A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A resinous composition, molded articles and containers made thereof and its use
Assignee: Kuraray Co Ltd
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Filing: 1985-09-05
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Granted: —
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Expires: 2005-09-05
Abstract
Abstract A resinous composition which comprises (A) 95 to 50 parts by weight of a saponified product of ethylene-vinyl acetate copolymer and (B) 5 to 50 parts by weight of a product formed by modifying an ethylene-vinyl carboxylate ester copolymer or an ethylene-acrylate ester copolymer with an a,p-unsaturated carboxylic acid or anhydride thereof. This resinous composition can be made by melt extrusion to form a molded article which is superior in impact resistance as compared to that formed from the component (A) alone. The resinous composition can also be applied in an inner layer or interlayer of a laminated container. This container is suitable for making bottles for food and agricultural chemicals because of its outstanding impact resistance, organic solvent resistance, and oxygen barrier properties.
Inventors
- 👤 Taichi Negi
- 👤 Akihiko Kawasaki
- 👤 Kyoichiro Ikari
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 18:08
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/30; B32B27/06; B32B27/08; C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L29/00; C08L29/02; C08L29/04; B32B2307/00; B32B2307/50; B32B2439/00; C08L51/00; C08L51/06; Y; Y10; Y10S; Y10S220/00; Y10S220/917; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1379; Y10T428/1397; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31928
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
80 words
A resinous composition which comprises (A) 95 to 50 parts by an weight of a saponified product of/ethylene-vinyl acetate copolymer containing 20 to 60 mol% of ethylene and having a degree of saponification greater than 95 % and (B) 5 to 50 parts by weight of a modified ethylene-vinyl carboxylate ester copolymer or a modified ethylene-acrylate a ester copolymer comprising ethylene,/vinyl carboxylate ester or an acrylate ester, and an C 3 -C 10 α, ß-unsaturated carboxylic acid or acid anhydride.
Claim 2
Dependent Claim
80 words
A resinous composition which comprises (A) 95 to 50 parts by an weight of a saponified product of/ethylene-vinyl acetate copolymer containing 20 to 60 mol% of ethylene and having a degree of saponification greater than 95 % and (B) 5 to 50 parts by weight of a modified ethylene-vinyl carboxylate ester copolymer or a modified ethylene-acrylate a ester copolymer comprising ethylene,/vinyl carboxylate ester or an acrylate ester, and an C 3 -C 10 α, ß-unsaturated carboxylic acid or acid anhydride.
Claim 3
Dependent Claim
90 words
A resinous composition as claimed in Claim 1, wherein said modified ethylene-vinyl carboxylate ester copolymer or modified ethylene-acrylate ester copolymer contains 60 to 95 mol % of ethylene and an X mol % of an α, B-unsaturated carboxylic acid or acid anhydride and has a melt index of Y g/10 min (190°C, 2160 g), where X and Y are those values that satisfy the following equations [I] and [II]. where Z is the melt index (Z g/10 min (190°C, 2160 g)) of the saponified produce of the ethylene-vinyl acetate copolymer.
Claim 4
Dependent Claim
34 words
A resinous composition as claimed in Claim 1, wherein the vinyl carboxylate ester component is represented by the formula (where R is a linear or branched alkyl group having 1 to 20 carbon atoms.)
Claim 5
Dependent Claim
33 words
A resinous composition as claimed in Claim 1, wherein the acrylate ester component is represented by the formula (where R' is a linear or branched alkyl group having 1 to 20 carbon atoms.)
Claim 6
Dependent Claim
23 words
A molded article having improved impact resistance produced by melt-molding a resinous composition according to any of Claims 1, 2, 3 and 4.
Claim 7
Dependent Claim
17 words
A molded article as claimed in Claim 5, which is produced by coextrusion with a thermoplastic resin.
Claim 8
Dependent Claim
25 words
A molded article as claimed in Claim 6, wherein said thermoplastic resin is selected from polyethylene terephthalate, polyamide, polypropylene, polyethylene, polycarbonate, polystyrene, and polyvinyl chloride.
Claim 9
Dependent Claim
28 words
An impact resistant container of laminated structure formed by coextrusion of a resinous composition according to any of Claims 1, 2, 3 and 4 and a thermoplastic resin.
Claim 10
Dependent Claim
30 words
A container as claimed in Claim 8, wherein the inner layer is made of the resinous composition of Claim 1 and the outer layer is made of a thermoplastic resin.
Claim 11
Dependent Claim
32 words
A container as claimed in Claim 8, wherein the interlayer is made of the resinous composition of Claim 1 and the inner and outer layers are made of a thermo- plastic resin.
Claim 12
Dependent Claim
24 words
A container as claimed in Claim 8, wherein said thermoplastic resin is selected from polyethylene terephthalate, polyamide, polypropylene, polyethylene, polycarbonate, polystyrene, and polyvinyl chloride.
Claim 13
Dependent Claim
23 words
Use of the resinous compositions according to any of Claims 1, 2, 3 and 4 for the preparation of impact resistant molded articles.
References Cited (Backward Citations)
No citation records indexed.
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