Polyphenylene sulfide resin composition
First Claim
1. A polyphenylene sulfide resin composition, comprising:
- (a) a polyphenylene sulfide resin having an amount of oligomers extracted with methylene chloride of 0.7% by weight or less and an amount of an —
SX group (wherein S is a sulfur atom, and X is an alkali metal or a hydrogen atom) of 20 μ
mol/g or more;
(b) an amorphous thermoplastic resin having a glass transition temperature (Tg) of 120°
C. or higher; and
(c) a copolymer at least comprising an unsaturated monomer having an epoxy group and/or an oxazolyl group and styrene as monomer components, the percentage of said styrene monomer in total monomers being more than 50% by weight, and the percentage of said unsaturated monomer in total monomers being from 0.3 to 20% by weight, wherein the amount of component (a) is from 1 to 99 parts by weight;
the amount of component (b) is from 99 to 1 part by weight (wherein the sum of component (a) and component (b) becomes 100 parts by weight); and
the amount of component (c) is from 1 to 20 parts by weight relative to 100 parts by weight of the sum of component (a) and component (b).
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Abstract
A polyphenylene sulfide resin composition including a polyphenylene sulfide resin having a specific amount of oligomers and a specific amount of a functional group, an amorphous thermoplastic resin having a glass transition temperature (Tg) of 120° C. or higher, and an additive having a specific amount of a functional group. The moldings obtained from this polyphenylene sulfide resin composition have a good toughness (impact strength) and weld strength. The use of this polyphenylene sulfide resin composition as a material for secondary battery cases makes it possible to maintain the initial electrolytic performance over a long period of time.
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Citations
15 Claims
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1. A polyphenylene sulfide resin composition, comprising:
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(a) a polyphenylene sulfide resin having an amount of oligomers extracted with methylene chloride of 0.7% by weight or less and an amount of an —
SX group (wherein S is a sulfur atom, and X is an alkali metal or a hydrogen atom) of 20 μ
mol/g or more;
(b) an amorphous thermoplastic resin having a glass transition temperature (Tg) of 120°
C. or higher; and
(c) a copolymer at least comprising an unsaturated monomer having an epoxy group and/or an oxazolyl group and styrene as monomer components, the percentage of said styrene monomer in total monomers being more than 50% by weight, and the percentage of said unsaturated monomer in total monomers being from 0.3 to 20% by weight, wherein the amount of component (a) is from 1 to 99 parts by weight;
the amount of component (b) is from 99 to 1 part by weight (wherein the sum of component (a) and component (b) becomes 100 parts by weight); and
the amount of component (c) is from 1 to 20 parts by weight relative to 100 parts by weight of the sum of component (a) and component (b). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A secondary battery case obtained from a polyphenylene sulfide resin composition, comprising:
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(a) a polyphenylene sulfide resin having an amount of oligomers extracted with methylene chloride of 0.7% by weight or less and an amount of an —
SX group (wherein S is a sulfur atom, and X is an alkali metal or a hydrogen atom) of 20 μ
mol/g or more;
(b) an amorphous thermoplastic resin having a glass transition temperature (Tg) of 120°
C. or higher; and
(c) a copolymer at least comprising an unsaturated monomer having an epoxy group and/or an oxazolyl group and styrene as monomer components, the percentage of said styrene monomer in total monomers being more than 50% by weight, and the percentage of said unsaturated monomer in total monomers being from 0.3 to 20% by weight, wherein the amount of component (a) is from 1 to 99 parts by weight;
the amount of component (b) is from 99 to 1 part by weight (wherein the sum of component (a) and component (b) becomes 100 parts by weight); and
the amount of component (c) is from 1 to 20 parts by weight relative to 100 parts by weight of the sum of component (a) and component (b). - View Dependent Claims (12, 13, 14, 15)
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Specification