US 11,993,669 B2
Foamable resin particles and method of producing same, and foamed molded body
Atsushi Iida, Hyogo (JP); Mitsuhiro Tamura, Hyogo (JP); and Yoichi Ohara, Hyogo (JP)
Assigned to KANEKA CORPORATION, Osaka (JP)
Filed by KANEKA CORPORATION, Osaka (JP)
Filed on Feb. 8, 2021, as Appl. No. 17/170,101.
Application 17/170,101 is a continuation of application No. PCT/JP2019/031384, filed on Aug. 8, 2019.
Claims priority of application No. 2018-150636 (JP), filed on Aug. 9, 2018.
Prior Publication US 2021/0163646 A1, Jun. 3, 2021
Int. Cl. C08F 212/10 (2006.01); C08J 9/18 (2006.01)
CPC C08F 212/10 (2013.01) [C08J 9/18 (2013.01); C08J 2203/10 (2013.01); C08J 2325/12 (2013.01)] 3 Claims
OG exemplary drawing
 
1. Expandable resin particles comprising:
a base material resin containing, as a structural unit, a styrene unit and an acrylonitrile unit; and an expanding agent,
wherein the expandable resin particles have a styrene content of not more than 20 ppm and an ethylbenzene content of not more than 130 ppm, and
wherein the base material resin has a TH/TQ ratio of less than 1.20.