US 12,410,314 B2
Resin composition and molded body
Takayuki Sugiyama, Tsukuba (JP); and Tasuku Tamura, Tsukuba (JP)
Assigned to SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo (JP)
Appl. No. 17/633,036
Filed by SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo (JP)
PCT Filed Apr. 16, 2020, PCT No. PCT/JP2020/016711
§ 371(c)(1), (2) Date Feb. 4, 2022,
PCT Pub. No. WO2021/029109, PCT Pub. Date Feb. 18, 2021.
Claims priority of application No. 2019-148160 (JP), filed on Aug. 9, 2019.
Prior Publication US 2022/0267591 A1, Aug. 25, 2022
Int. Cl. C08L 67/02 (2006.01)
CPC C08L 67/02 (2013.01) [C08L 2205/025 (2013.01); C08L 2207/04 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A resin composition comprising:
resin pellets comprising a first thermoplastic resin and glass fibers; and
a second thermoplastic resin,
wherein the first thermoplastic resin and the second thermoplastic resin are both liquid crystal polyester resins,
the second thermoplastic resin has a lower flow starting temperature than the resin pellets,
a length weighted average fiber length of the glass fibers is 5.5 mm to 20 mm,
a denier of the glass fibers in the resin pellets is 500 g/1000 m or more and 3400 g/1000 m or less,
each of the first thermoplastic resin and the second thermoplastic resin has a repeating unit (1) represented by Formula (1), a repeating unit (2) represented by Formula (2), and a repeating unit (3) represented by Formula (3), and
a content of the repeating unit (2) is 10 mol % or more and 35 mol % or less with respect to a total amount of the repeating unit (1), the repeating unit (2), and the repeating unit (3),
—O—Ar1—CO—  (1)
—CO—Ar2—CO—  (2)
—X—Ar3—Y—  (3)
wherein, Ar1 represents a phenylene group, a naphthylene group, or a biphenylylene group, Ar2 and Ar3 each independently represent a phenylene group, naphthylene group, biphenylylene group, or a group represented by Formula (4), X and Y each independently represent an oxygen atom or an imino group (—NH—), hydrogen atoms in the group represented by Ar1, Ar2, or Ar3 are each independently substituted with a halogen atom, an alkyl group, or an aryl group,
—Ar4—Z—Ar5—  (4)
wherein, Ar4 and Ar5 each independently represent a phenylene group or a naphthylene group, and Z represents an oxygen atom, a sulfur atom, a carbonyl group, a sulfonyl group, or an alkylidene group.