US 12,258,442 B2
Polyester and molded article
Ching-Jui Huang, Taipei (TW); Ping-Chieh Wang, Taipei (TW); and June-Yen Chou, Taipei (TW)
Assigned to Chang Chun Plastics Co., Ltd., Taipei (TW)
Filed by Chang Chun Plastics Co., Ltd., Taipei (TW)
Filed on Mar. 23, 2023, as Appl. No. 18/125,227.
Claims priority of application No. 111110930 (TW), filed on Mar. 23, 2022.
Prior Publication US 2023/0323022 A1, Oct. 12, 2023
Int. Cl. C08G 63/199 (2006.01); C08G 63/80 (2006.01)
CPC C08G 63/199 (2013.01) [C08G 63/80 (2013.01)] 8 Claims
 
1. A polyester, comprising residues of formula (i), formula (ii), formula (iii) and formula (iv):

OG Complex Work Unit Chemistry
wherein R1 is an aromatic group, R2 is a C2-C6 straight-chain hydrocarbon group, * represents a linking bond, based on 100 mol % of a sum of the residues of the formula (ii), the formula (iii), and the formula (iv), a content of the residue of the formula (ii) ranges from 5 mol % to 15 mol %, a content of the residue of the formula (iii) ranges from 50 mol % to 85 mol %, and a content of the residue of the formula (iv) ranges from 12 mol % to 40 mol %, a number average molecular weight of the polyester ranges from 20,000 Daltons to 30,000 Daltons, and an inherent viscosity of the polyester is larger than 0.7 dl/g.