Flynn, Thiel, Boutell & Tanis
Lactone polymer
 A lactone polymer has a narrow molecular weight distribution where a ratio of the weight average molecular weight to the number average molecular weight is in the range of from 1.1 to 2.0 and the molecular weight is 500 to 5,000. 
Daicel Chemical Industries, Ltd.
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C08G C08G C08G
inventional inventional inventional
Shoji Takuya Tatsumi
Watanabe Miho Fujii