POLY(ARYLENE SULFIDE) RESIN COMPOSITION AND INSERT-MOLDED ARTICLE

• US 20190322867A1
• Filed: 11/28/2017
• Published: 10/24/2019
• Est. Priority Date: 12/09/2016
• Status: Abandoned Application

• Current Assignee: Polyplastics Co., Ltd. (Daicel Corporation)
• Original Assignee: Polyplastics Company Limited
• Inventors: Ohnishi, Katsuhei, Kanezuka, Tatsuya
• Application Number:
  US16/466,848
• Publication Number:
  US 20190322867A1
• Time in Patent Office: Days
• CPC Class Codes: B29C 2045/14893 Preventing defects relating to shrinkage of inserts or coating material
• CPC Class Codes: B29C 45/0001 characterised by the choice of material
• CPC Class Codes: B29C 45/14 incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles B29C45/1671 takes precedence
• CPC Class Codes: B29C 45/14836 Preventing damage of inserts during injection, e.g. collapse of hollow inserts, breakage B29C45/14434 takes precedence
• CPC Class Codes: B29K 2081/04 Polysulfides, e.g. PPS, i.e. polyphenylene sulfide or derivatives thereof
• CPC Class Codes: B29K 2105/12 of short lengths, e.g. chopped filaments, staple fibres or bristles
• CPC Class Codes: B29K 2105/16 Fillers
• CPC Class Codes: B29K 2281/04 Polysulfides, e.g. PPS, i.e. polyphenylene sulfide, or derivatives thereof
• CPC Class Codes: B29K 2995/0012 having particular thermal properties
• CPC Class Codes: B29K 2995/0049 Heat shrinkable
• CPC Class Codes: B32B 15/08 of synthetic resin
• CPC Class Codes: C08K 2003/265 Calcium, strontium or barium carbonate
• CPC Class Codes: C08K 2201/003 Additives being defined by their diameter
• CPC Class Codes: C08K 2201/014 Additives containing two or more different additives of the same subgroup in C08K
• CPC Class Codes: C08K 3/013 Fillers, pigments or reinforcing additives
• CPC Class Codes: C08K 3/26 Carbonates; Bicarbonates
• CPC Class Codes: C08K 7/04 inorganic
• CPC Class Codes: C08K 7/14 Glass
• CPC Class Codes: C08L 23/0884 Epoxide containing esters
• CPC Class Codes: C08L 33/068 containing glycidyl groups
• CPC Class Codes: C08L 41/00 : Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a bond to sulfur or by a heterocyclic ring containing sulfur; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 63/10 : Epoxy resins modified by unsaturated compounds
• CPC Class Codes: C08L 81/02 : Polythioethers; Polythioether-ethers

Abstract

[Problem] To provide: a polyarylene sulfide resin composition having excellent high- and low-temperature impact properties and excellent low warpage; and an insert-molded article using the resin composition.

[Solution] A polyarylene sulfide resin composition that contains a polyarylene sulfide resin A, an inorganic filler B, and an olefinic copolymer C containing a structural unit derived from an α-olefin and a structural unit derived from a glycidyl ester of an a, p-unsaturated acid, the inorganic filler B containing a fibrous inorganic filler B1 having a different diameter ratio, which is a ratio of the major axis to the minor axis of a cross section perpendicular to the longitudinal direction, of 1.5 or less, and a fibrous inorganic filler B2 having a different diameter ratio of 3.0 or more, the mass ratio B1/B2 of the fibrous inorganic filler B1 and the fibrous inorganic filler B2 being 0.2 or more and 5.0 or less.

Claims

1. A polyarylene sulfide resin composition, wherein:

the polyareylene sulfide resin composition contains a polyarylene sulfide resin A, an inorganic filler B, and an olefinic copolymer C that contains a structural unit derived from an α

-olefin and a structural unit derived from a glycidyl ester of an α

,β

-unsaturated acid;

the inorganic filler B contains a fibrous inorganic filler B1 having a different diameter ratio of 1.5 or less, and a fibrous inorganic filler B2 having a different diameter ratio of 3.0 or more, the different diameter ratio being the ratio of the major axis to the minor axis of a cross section perpendicular to the longitudinal direction; and

a mass ratio B1/B2 of the fibrous inorganic filler B1 and the fibrous inorganic filler B2 is 0.2 or more and 5.0 or less.

2. The polyarylene sulfide resin composition according to claim 1, wherein the inorganic filler B further contains a non-fibrous inorganic filler B3.

3. The polyarylene sulfide resin composition according to claim 1, wherein:

the content of the inorganic filler B is 90 parts by mass or more and 220 parts by mass or less with respect to 100 parts by mass of the polyarylene sulfide resin A; and

the content of the olefinic copolymer C is 3 parts by mass or more and 30 parts by mass or less with respect to 100 parts by mass of the polyarylene sulfide resin A.

4. The polyarylene sulfide resin composition according to claim 2, wherein

the contents of the fibrous inorganic filler B2 and the non-fibrous inorganic filler B3 are each 20 parts by mass or more with respect to 100 parts by mass of the polyarylene sulfide resin A.

5. The polyarylene sulfide resin composition according to claim 2, wherein the non-fibrous inorganic filler B3 has an average particle diameter of 10 μ

m or more.

6. An insert-molded article having an insert member and a resin member covering at least a portion of a surface of the insert member, wherein:

the insert member is formed using a metal, an alloy, or an inorganic solid; and

the resin member is formed using the polyarylene sulfide resin composition according to claim 1. (Original) The insert-molded article according to claim 6, wherein the resin member has;

at least one fragile portion that extends in a predetermined direction and comprises either or both of a welded section where flow terminals of the resin composition joined one another and a stress concentration section for concentrating stress generated by expansion and contraction; and

a gate mark on a surface extending in a substantially perpendicular direction to the direction in which the at least one fragile portion extends.