	US 12,281,061 B2
	Olefin production method
Yuki Okamoto, Chiba (JP)
Assigned to SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo (JP)
Appl. No. 18/021,978
Filed by Sumitomo Chemical Company, Limited, Tokyo (JP)
PCT Filed Aug. 11, 2021, PCT No. PCT/JP2021/029688 § 371(c)(1), (2) Date Feb. 17, 2023, PCT Pub. No. WO2022/039094, PCT Pub. Date Feb. 24, 2022.
Claims priority of application No. 2020-139554 (JP), filed on Aug. 20, 2020.
Prior Publication US 2023/0357105 A1, Nov. 9, 2023
Int. Cl. C07C 4/06 (2006.01); B01J 29/70 (2006.01); B01J 29/90 (2006.01); B01J 38/12 (2006.01)

CPC C07C 4/06 (2013.01) [B01J 29/7003 (2013.01); B01J 29/90 (2013.01); B01J 38/12 (2013.01); C07C 2529/70 (2013.01)]

13 Claims

1. An olefin production method, comprising a step of catalytically cracking a raw material containing at least a polyolefin and an organochlorine compound in the presence of a zeolite catalyst having a sodium atom content of less than 0.1% by mass and a step of thermally decomposing the raw material before the step of catalytically cracking.