Patent ID: 9559289
Date: 2017-01-31
CPC Classifications: B29C,B29D,B29K,C08G,C08J,C08K,C08L,H01L

Claim:
1. A polymeric piezoelectric material comprising: an aliphatic polyester (A) with a weight-average molecular weight of from 50,000 to 1,000,000 and having optical activity; and a stabilizing agent (B) with a weight-average molecular weight of from 200 to 60,000 having at least one kind of functional group selected from the group consisting of a carbodiimide group, an epoxy group and an isocyanate group, wherein the crystallinity of the material obtained by a DSC method is from 20% to 80%, a content of the stabilizing agent (B) is from 0.01 part by mass to 10 parts by mass with respect to 100 parts by mass of the aliphatic polyester (A), and internal haze with respect to visible light is 50% or less.