	US 12,441,838 B2
	Resin composition, molded article, and method for producing resin composition
Fumihito Okamoto, Hiratsuka (JP)
Assigned to GLOBAL POLYACETAL CO., LTD., Tokyo (JP)
Appl. No. 17/623,341
Filed by MITSUBISHI ENGINEERING-PLASTICS CORPORATION, Tokyo (JP)
PCT Filed Jun. 15, 2020, PCT No. PCT/JP2020/023344 § 371(c)(1), (2) Date Dec. 28, 2021, PCT Pub. No. WO2021/014818, PCT Pub. Date Jan. 28, 2021.
Claims priority of application No. 2019-135885 (JP), filed on Jul. 24, 2019.
Prior Publication US 2022/0356304 A1, Nov. 10, 2022
Int. Cl. C08G 69/26 (2006.01); C08K 3/22 (2006.01)

CPC C08G 69/26 (2013.01) [C08K 3/22 (2013.01); C08K 2003/2213 (2013.01); C08K 2201/019 (2013.01)]

16 Claims

1. A resin composition comprising a polyamide resin and cerium oxide wherein any lanthanum in the resin composition is from the cerium oxide having a lanthanum content, measured by ICP emission spectrometry, of more than 0% by mass and 1% by mass or less, and

wherein the lanthanum content in the resin composition is more than 0 ppm by mass and 40 ppm by mass or less, and

wherein the cerium oxide has a median diameter (particle size determined by laser diffraction/scattering analysis) of 0.1 to 3 μm; and

the cerium oxide has a purity of at least 90% and a lanthanum content of 0.01 to 0.7% by mass when measured by ICP emission spectrometry.