What is claimed is:
1. A resin composition comprising 70 to 99.9% by weight of ethylene-vinyl alcohol copolymer (A) and 0.1 to 30% by weight of a thermoplastic resin (B) other than the ethylene-vinyl alcohol copolymer (A), wherein
an ethylene content ETa (mol %) and a degree of saponification SDa (%) of the ethylene-vinyl alcohol copolymer (A) satisfy the following equations (1) and (2):
25ETa55(1) 90SDa<99(2), and
an oxygen absorption rate of the resin composition is 0.01 mlm2day or more.
2. A resin composition comprising 70 to 99.9% by weight of ethylene-vinyl alcohol copolymer (A) and 0.1 to 30% by weight of a thermoplastic resin (B) other than the ethylene-vinyl alcohol copolymer (A), wherein
the ethylene-vinyl alcohol copolymer (A) comprises at least two kinds of ethylene-vinyl alcohol copolymers (a1) and (a2), ethylene contents ETa1 (mol %) and ETa2 (mol %) and degrees of saponification SDa1 (%) and SDa2 (%) of the ethylene-vinyl alcohol copolymers (a1) and (a2), respectively, satisfy the following equations (3) to (6):
25ETa155(3) 90SDa1<99(4) 25ETa255(5) 99SDa2(6),
a weight ratio (a1a2) of the ethylene-vinyl alcohol copolymers (a1) and (a2) is 595 to 955, and
an oxygen absorption rate of the resin composition is
0.01 mlm2day or more.
3. The resin composition of claim 2, wherein the thermoplastic resin (B) comprises a carbon-carbon double bond.
4. The resin composition of any one of claim 2, further comprises a transition metal salt (C).
5. The resin composition of claim 2, wherein the thermoplastic resin (B) comprises a carbon-carbon double bond in a ratio of 0.0001 eqg or more.
6. The resin composition of claim 2, wherein the thermoplastic resin (B) comprises a unit represented by formula (I)
3
wherein R1 is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, R2 is a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an aryl group, an alkylaryl group, an arylalkyl group or an alkoxy group, R3 and R4 are each independently a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an aryl group that can be substituted, COOR5, OCOR6, an cyano group or a halogen atom, and R5 and R6 are each independently an alkyl group having 1 to 10 carbon atoms, an aryl group, an alkylaryl group, an arylalkyl group or an alkoxy group.
7. The resin composition of claim 2, wherein a molecular weight of the thermoplastic resin (B) is 1000 to 500000.
8. The resin composition of claim 2, wherein the thermoplastic resin (B) comprises an aromatic vinyl compound unit and a diene compound unit.
9. The resin composition of claim 8, wherein the diene compound unit is at least one of an isoprene unit and a butadiene unit.
10. The resin composition of claim 8, wherein the aromatic vinyl compound unit is a styrene unit.
11. The resin composition of claim 8, wherein the thermoplastic resin (B) is a block copolymer.
12. The resin composition of claim 2, wherein the thermoplastic resin (B) is a styrene-isoprene block copolymer.
13. The resin composition of claim 2, wherein a difference in refractive index between the ethylene-vinyl alcohol copolymer (A) and the thermoplastic resin (B) is 0.01 or less.
14. The resin composition of claim 2, wherein particles of the thermoplastic resin (B) are dispersed in a matrix of the ethylene-vinyl alcohol copolymer (A).
15. A resin composition comprising ethylene-vinyl alcohol copolymer (A), a thermoplastic resin (B) other than the ethylene-vinyl alcohol copolymer (A), and a transition metal salt (C), wherein
an ethylene content ETa (mol %) and a degree of saponification SDa (%) of the ethylene-vinyl alcohol copolymer (A) satisfy the following equations (1) and (2):
25ETa55(1) 90SDa<99(2), and
the thermoplastic resin (B) comprises a carbon-carbon double bond.
16. A resin composition comprising ethylene-vinyl alcohol copolymer (A), a thermoplastic resin (B) other than the ethylene-vinyl alcohol copolymer (A), and a transition metal salt (C), wherein
the ethylene-vinyl alcohol copolymer (A) comprises at least two kinds of ethylene-vinyl alcohol copolymers (a1) and (a2),
ethylene contents ETa1 (mol %) and ETa2 (mol %) and degrees of saponification SDa1 (%) and SDa2 (%) of the ethylene-vinyl alcohol copolymers (a1) and (a2), respectively, satisfy the following equations (3) to (6):
25ETa155(3) 90SDa1<99(4) 25ETa255(5) 99SDa2(6),
a weight ratio (a1a2) of the ethylene-vinyl alcohol copolymers (a1) and (a2) is 595 to 955, and
the thermoplastic resin (B) comprises a carbon-carbon double bond.
17. The resin composition of claim 16, wherein the transition metal salt (C) is contained in a ratio of 1 to 5000 ppm in terms of metal element, based on a total weight of the ethylene-vinyl alcohol copolymer (A) and the thermoplastic resin (B).
18. The resin composition of claim 16, wherein the transition metal salt (C) comprises at least one transition metal selected from the group consisting of iron, nickel, copper, manganese, and cobalt.
19. The resin composition of claim 16, wherein the thermoplastic resin (B) comprises a carbon-carbon double bond in a ratio of 0.0001 eqg or more.
20. The resin composition of claim 16, wherein the thermoplastic resin (B) comprises a unit represented by formula (I)
4
wherein R1 is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, R2 is a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an aryl group, an alkylaryl group, an arylalkyl group or an alkoxy group, R3 and R4 are each independently a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an aryl group that can be substituted, COOR5, OCOR6, an cyano group or a halogen atom, and R5 and R6 are each independently an alkyl group having 1 to 10 carbon atoms, an aryl group, an alkylaryl group, an arylalkyl group or an alkoxy group.
21. The resin composition of claim 16, wherein a molecular weight of the thermoplastic resin (B) is 1000 to 500000.
22. The resin composition of claim 16, wherein the thermoplastic resin (B) comprises an aromatic vinyl compound unit and a diene compound unit.
23. The resin composition of claim 22, wherein the diene compound unit is at least one of an isoprene unit and a butadiene unit.
24. The resin composition of claim 22, wherein the aromatic vinyl compound unit is a styrene unit.
25. The resin composition of claim 22, wherein the thermoplastic resin (B) is a block copolymer.
26. The resin composition of claim 16, wherein the thermoplastic resin (B) is a styrene-isoprene block copolymer.
27. The resin composition of claims 16, wherein a difference in refractive index between the ethylene-vinyl alcohol copolymer (A) and the thermoplastic resin (B) is 0.01 or less.
28. The resin composition of claim 16, wherein particles of the thermoplastic resin (B) are dispersed in a matrix of the ethylene-vinyl alcohol copolymer (A).
29. A resin composition comprising ethylene-vinyl alcohol copolymer (A), a thermoplastic resin (13) other than the ethylene-vinyl alcohol copolymer (A), and a transition metal salt (C), wherein
the ethylene-vinyl alcohol copolymer (A) is contained in an amount of 70 to 99.9% by weight and the thermoplastic resin (B) is contained in an amount of 0.1 to 30% by weight,
the ethylene-vinyl alcohol copolymer (A) comprises at least two kinds of ethylene-vinyl alcohol copolymers (a1) and (a2),
ethylene contents ETa1 (mol %) and ETa2 (mol %) and degrees of saponification SDa1 (%) and SDa2 (%) of the ethylene-vinyl alcohol copolymers (a1) and (a2), respectively, satisfy the following equations (3) to (6):
25ETa155(3) 90SDa1<99(4) 25ETa255(5) 99SDa2(6),
a weight ratio (a1a2) of the ethylene-vinyl alcohol copolymers (a1) and (a2) is 595 to 955,
the thermoplastic resin (B) comprises a carbon-carbon double bond, and
an oxygen absorption rate of the resin composition is 0.01 mlm2day or more.
30. A multilayered structure comprising at least one layer made of the resin composition of claim 2.
31. A multilayered container comprising at least one layer made of the resin composition of claim 2 and at least one thermoplastic polyester layer.
32. The multilayered container of claim 31, wherein two thermoplastic polyester layers are arranged so as to be in direct contact with both surfaces of the layer made of the resin composition.
33. A coinjection blow molded container having a multilayered structure, in which two thermoplastic polyester layers are arranged so as to be in direct contact with both surfaces of a layer made of the resin composition of claim 2.
34. A multilayered structure comprising at least one layer made of the resin composition of claim 16.
35. A multilayered container comprising at least one layer made of the resin composition of claim 16 and at least one thermoplastic polyester layer.
36. The multilayered container of claim 35, wherein two thermoplastic polyester layers are arranged so as to be in direct contact with both surfaces of the layer made of the resin composition.
37. A coinjection blow molded container having a multilayered structure, in which two thermoplastic polyester layers are arranged so as to be in direct contact with both surfaces of a layer made of the resin composition of claim 16.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A rotating electric machine, comprising:
a stator provided with a plurality of windings;
a rotor core rotatably fixed to a rotary shaft inside said stator; and
a plurality of magnets disposed in slots formed in said rotor core near its outer circumferential surface and configured as flat plates;
wherein a number of magnet poles is two;
each of said magnet poles includes at least three of said magnets; and
said magnets of one of said magnet poles include two end magnets arranged such that, among said magnets of said one of said magnet poles, one of said two end magnets is oriented to incline in a direction that goes to a center position of said one of said magnet poles from a center of the rotary shaft rather than in a direction that goes to the center of the magnet arranged at the magnetic pole end from a center of the rotary shaft, and another of said two end magnets is also oriented to incline in a direction that goes to the center position of said one of said magnet poles from said center of the rotary shaft rather than in a direction that goes to the center of the magnet.
2. A rotating electric machine according to claim 1, wherein a circumferential angle occupied by the magnets constituting one of said magnetic poles is in the range of 150 to 165 degrees in terms of an electrical angle.
3. A rotating electric machine according to claim 1, wherein one of said two end magnets is oriented to incline toward the magnetic pole center position so that an angle formed between said magnet and a line tangential to a point at which a straight line, passing through both the center of said rotary shaft and the center of said magnet, crosses an outer circumferential surface of said rotor core is in the range of 2.0 to 6.0 degrees.
4. A rotating electric machine according to claim 1, wherein, among the magnets constituting one magnetic pole, long sides of said end magnets are inclined, in the range of 2.0 to 6.0 degrees, from a line tangential to a point at which a straight line passing both the center of said rotary shaft and the center of said magnet crosses an outer circumferential surface of said rotor core.
5. A rotating electric machine according to claim 1, wherein a circular arc passing the centers of the two end magnets of said one of said magnetic poles has a smaller diameter than a circular arc passing the center of a magnet arranged between the two end magnets.
6. A rotating electric machine according to claim 1, wherein said slots are shaped such that slits are formed between adjacent magnets of said plurality of magnets.
7. A rotating electric machine according to claim 1,
wherein at least six of said slots are provided in said rotor core, and
said slots are arranged such that long sides of said slots in which said end magnets are arranged are inclined, in the range of 2.0 to 6.0 degrees, from a line tangential to a point at which a straight line passing both the center of said rotary shaft and the center of said magnet crosses an outer circumferential surface of said rotor core.