Resin composition
AssigneeKuraray Co., Ltd.
InventorsHiroyuki Shimo, Yasuhiko Haneda, Syuichi Kanao
Life of this patent
Estimating the term…
Abstract
A resin composition comprising (A) an ethylene-vinyl alcohol copolymer, (B) a polyamide resin, (C) an ethylene-unsaturated carboxylic acid random copolymer or its metal salt, and (D) a thermoplastic resin except the resins noted above, of which the solubility parameter (as calculated from the Fedors' formula) is not more than 11. The resin composition has good compatibility, excellent barrier properties, mechanical strength, flexibility, drawability, melt stability, scrap recyclability, heat sealability, coatability, stain resistance and transparency.
Claims21
A resin composition comprising (A) an ethylene-vinyl alcohol copolymer, (B) a polyamide resin, (C) an ethylene-unsaturated carboxylic acid random copolymer or its metal salt, and (D) a thermoplastic resin except the resins noted above, of which the solubility parameter (as calculated from the Fedors' formula) is not more than 11, wherein;
- the compositional ratio by weight satisfies the following formulae (1) to (4):
- 0.6≦W(A+D)/W(T)≦0.995 (1)
- 0.005≦W(B+C)/W(T)≦0.4 (2)
- 0.01≦W(A)/W(A+D)≦0.99 (3)
- 0.02≦W(B)/W(B+C)≦0.98 (4)
- wherein;
- W(A) indicates the weight of (A) in the composition,
- W(B) indicates the weight of (B) in the composition,
- W(C) indicates the weight of (C) in the composition,
- W(D) indicates the weight of (D) in the composition,
- W(T) indicates the total weight of the composition.
A scrap recycling method of using (B) a polyamide resin and (C) an ethylene-unsaturated carboxylic acid random copolymer or its metal salt as the compatibilizer for recycling the scrap of shaped articles that comprise, as the major components, (A) an ethylene-vinyl alcohol copolymer and (D) a thermoplastic resin except the resins noted above, of which the solubility parameter (as calculated from the Fedors' formula) is not more than 11.
Dependencies are inferred from the claim text.