| CPC C08F 8/22 (2013.01) [C08F 114/06 (2013.01)] | 3 Claims |
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1. A chlorinated polyvinyl chloride having an endothermic peak start temperature (L) and an endothermic peak end temperature (H) that satisfy the following expression (1) in endothermic peak measurement using a differential scanning calorimeter (DSC):41° C.≤H−L≤98° C. (1),
wherein the chlorinated polyvinyl chloride contains units (a) to (c) represented by the following formulas (a) to (c), and the proportion of the structural unit (a) is 30.0 mol % or higher and 90.0 mol % or lower, the proportion of the structural unit (b) is 5.0 mol % or higher and 30.0 mol % or lower, and the proportion of the structural unit (c) is 5.0 mol % or higher and 55.0 mol % or lower, relative to the total number of moles of the structural units (a), (b), and (c)
—CH2—CHCl— (a)
—CH2—CCl2— (b)
—CHCl═CHCl— (c), and
wherein the endothermic peak start temperature (L) is 77.3° C. or higher and 103.6° C. or lower, or
wherein the endothermic peak end temperature (H) is 151.8° C. or higher and 166.1° C. or lower.
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