US 12,252,577 B2
Chlorinated vinyl chloride resin
Ryota Yamasugi, Yamaguchi (JP); Mitsuo Matsumoto, Yamaguchi (JP); Nami Nakajima, Osaka (JP); and Yasunari Kusaka, Osaka (JP)
Assigned to SEKISUI CHEMICAL CO., LTD., Osaka (JP)
Appl. No. 17/911,835
Filed by SEKISUI CHEMICAL CO., LTD., Osaka (JP)
PCT Filed Mar. 30, 2021, PCT No. PCT/JP2021/013704
§ 371(c)(1), (2) Date Sep. 15, 2022,
PCT Pub. No. WO2021/201042, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 2020-064538 (JP), filed on Mar. 31, 2020.
Prior Publication US 2023/0148238 A1, May 11, 2023
Int. Cl. C08F 8/22 (2006.01); C08F 114/06 (2006.01)
CPC C08F 8/22 (2013.01) [C08F 114/06 (2013.01)] 4 Claims
 
1. A chlorinated polyvinyl chloride resin
comprising two components including a A30 component and a B30 component, the A30 component and the B30 component being determined by measuring the resin by a solid echo method using pulse NMR at 30° C. to give a free induction decay curve of 1H spin-spin relaxation, and subjecting the free induction decay curve to waveform separation into two curves derived from the A30 component and the B30 component in order of shorter relaxation time using the least square method, and
having a ratio of T5B to TB [T5B/TB] of 76% or more and less than 96%, where TB is a relaxation time of the B30 component and T5B is a relaxation time of the B30 component after heating at 200° C. for five minutes.