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1. US20180170104 - Thermoplastic elastomer composition

注意: このテキストは、OCR 処理によってテキスト化されたものです。法的な用途には PDF 版をご利用ください。

Claims

1. A thermoplastic elastomer composition comprising
a polymer component comprising
(a) a halogenated isoolefin-para-alkylstyrene copolymer;
(b) a modified rubber having an acid anhydride group; and
(c) an ethylene-vinyl alcohol copolymer,
and
(d) a processing aid composed of an alkaline earth metal salt of higher fatty acid; and
(e) a crosslinker,
wherein a weight ratio (W a) of the halogenated isoolefin-para-alkylstyrene copolymer (a) to elastomer components (a)+(b) is 10 to 45 wt
wherein a weight ratio (W b) of the modified rubber (b) having an acid anhydride group to elastomer components (a)+(b) is 90 to 55 wt %,
wherein a content (W d) of the processing aid (d) composed of an alkaline earth metal salt of higher fatty acid is 0.3 to 30 parts by mass with respect to 100 parts by mass of the halogenated isoolefin-para-alkylstyrene copolymer (a).
2. The thermoplastic elastomer composition according to claim 1, further comprising (f) a polyamide resin as a polymer component, wherein a weight ratio of the polyamide resin (f) to thermoplastic resin components (c)+(f) is 5 to 50 wt %.
3. The thermoplastic elastomer composition according to claim 1, wherein a weight ratio of elastomer components (a)+(b) to the polymer component is 40 wt % or more.
4. The thermoplastic elastomer composition according to claim 1, wherein the processing aid (d) is an alkaline earth metal salt of a C5-30 fatty acid.
5. The thermoplastic elastomer composition according claim 1, wherein a saponification degree of the ethylene-vinyl alcohol copolymer (c) is 90% or more.
6. A film composed of the thermoplastic elastomer composition according to claim 1.
7. A tire using the film according to claim 6.
8. The thermoplastic elastomer composition according to claim 2, wherein a weight ratio of elastomer components (a)+(b) to the polymer component is 40 wt % or more.
9. The thermoplastic elastomer composition according to claim 8, wherein the processing aid (d) is an alkaline earth metal salt of a C5-30 fatty acid.
10. The thermoplastic elastomer composition according to claim 2, wherein the processing aid (d) is an alkaline earth metal salt of a C5-30 fatty acid.
11. The thermoplastic elastomer composition according to claim 3, wherein the processing aid (d) is an alkaline earth metal salt of a C5-30 fatty acid.
12. The thermoplastic elastomer composition according to claim 11, wherein a saponification degree of the ethylene-vinyl alcohol copolymer (c) is 90% or more.
13. The thermoplastic elastomer composition according to claim 2, wherein a saponification degree of the ethylene-vinyl alcohol copolymer (c) is 90% or more.
14. The thermoplastic elastomer composition according to claim 3, wherein a saponification degree of the ethylene-vinyl alcohol copolymer (c) is 90% or more.
15. The thermoplastic elastomer composition according to claim 4, wherein a saponification degree of the ethylene-vinyl alcohol copolymer (c) is 90% or more.
16. The thermoplastic elastomer composition according to claim 8, wherein a saponification degree of the ethylene-vinyl alcohol copolymer (c) is 90% or more.
17. The thermoplastic elastomer composition according to claim 9, wherein a saponification degree of the ethylene-vinyl alcohol copolymer (c) is 90% or more.
18. The thermoplastic elastomer composition according to claim 10, wherein a saponification degree of the ethylene-vinyl alcohol copolymer (c) is 90% or more.
19. A film composed of the thermoplastic elastomer composition according to claim 2.
20. A film composed of the thermoplastic elastomer composition according to claim 3.