Patent ID: 11912839
Assignee: SAM BU FINE CHEMICAL CO., LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  Y | IPC C

Claim 3:
4. The hot melt film containing TPU resin of claim 3, which includes biomass based TPU, wherein the aliphatic diol is at least one diol selected from ethylene glycol, 1,2-propanediol, 1,3-propanediol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, neopentyl glycol, diethylene glycol, methylene glycol, tetraethylene glycol, dipropylene glycol, and tripropylene glycol, wherein polyester polyol is the number average molecular weight in a range of 400 to 8,000.