	US 12,297,312 B2
	Chlorinated vinyl chloride-based resin
Kenichi Matsumura, Yamaguchi (JP); Nozomi Eguchi, Yamaguchi (JP); Isao Higuchi, Osaka (JP); and Yasunari Kusaka, Osaka (JP)
Assigned to SEKISUI CHEMICAL CO., LTD., Osaka (JP)
Appl. No. 17/908,757
Filed by SEKISUI CHEMICAL CO., LTD., Osaka (JP)
PCT Filed Mar. 29, 2021, PCT No. PCT/JP2021/013348 § 371(c)(1), (2) Date Sep. 1, 2022, PCT Pub. No. WO2021/200844, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 2020-064539 (JP), filed on Mar. 31, 2020.
Prior Publication US 2023/0250201 A1, Aug. 10, 2023
Int. Cl. C08F 8/22 (2006.01); C08F 8/34 (2006.01); C08F 114/06 (2006.01)

CPC C08F 8/22 (2013.01) [C08F 8/34 (2013.01); C08F 114/06 (2013.01)]

4 Claims

1. A chlorinated polyvinyl chloride resin having an average of a ratio (A/B) of a peak intensity A observed in a range of 300 to 340 cm⁻¹to a peak intensity B observed in a range of 1,450 to 1,550 cm⁻¹of 0.1 or more and 3.5 or less in Raman imaging measurement by Raman spectroscopy, having a sulfur content of 1 mass ppm or more and 1,000 mass ppm or less, and containing structural units (a) to (c) represented by the following formulas (a) to (c), wherein a proportion of the structural unit (b) is 40.0 mol % or lower relative to total number of moles of the structural units (a) to (c)