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US 12,570,792 B2Granted
Polyethylene furanoate, highly-viscous polyethylene furanoate manufacturing method, polyester composition, polyester bottle, polyester bottle manufacturing method, and beverage product
AssigneesKirin Holdings Kabushiki Kaisha, Mitsubishi Chemical Corporation
InventorsTakashi Sato, Satoshi Kato, Rie Shirahama, Takafumi Asakura, Masaki Nakaya, Yohei Yamaguchi
Life of this patent
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Abstract
This polyethylene furanoate has an intrinsic viscosity of 0.95-1.50 dl/g. Said intrinsic viscosity is measured (the Huggins constant is defined as 0.32) at 30° C. by using an Ubbelohde viscometer, after dissolving 0.25 g of the polyethylene furanoate in 50 ml of a solvent mixture of phenol/1,1,2,2-tetrachloroethane=50/50 (weight ratio).
Claims18
Polyethylene furanoate having an intrinsic viscosity of from 1.1 dl/g to 1.50 dl/g, as measured by a method comprising:
- a. dissolving 0.25 g of polyethylene furanoate in 50 ml of a mixed solvent of phenol/1,1,2,2-tetrachloroethane=50/50 (weight ratio);
- and
- b. measuring the intrinsic viscosity using an Ubbelohde viscometer at 30° C., wherein the Huggins constant is 0.32;
- wherein the polyethylene furanoate contains an aliphatic diol structural unit in an amount of 50 mol % or more based on 100 mol % of the entire diol structural units contained in the polyethylene furanoate.
1 more element
Dependencies are inferred from the claim text.