US 12,064,754 B2
Titanium catalyst and synthesizing polyester resins
Yi-Chou Tsai, Hsinchu (TW); John Di Yi Ou, Houston, TX (US); Chuan-Sheng Huang, Hsinchu (TW); and Yung-Sheng Lin, Taipei (TW)
Assigned to NATIONAL TSING HUA UNIVERSITY, Hsinchu (TW); CHANG CHUN PLASTICS CO., LTD., Taipei (TW); CHANG CHUN PETROCHEMICAL CO., LTD., Taipei (TW); and DAIREN CHEMICAL CORP., Taipei (TW)
Filed by NATIONAL TSING HUA UNIVERSITY, Hsinchu (TW); Chang Chun Plastics Co., Ltd., Taipei (TW); Chang Chun Petrochemical Co., LTD., Taipei (TW); and DAIREN CHEMICAL CORP., Taipei (TW)
Filed on May 10, 2022, as Appl. No. 17/741,029.
Claims priority of application No. 110146662 (TW), filed on Dec. 14, 2021.
Prior Publication US 2023/0182123 A1, Jun. 15, 2023
Int. Cl. C07F 7/28 (2006.01); B01J 31/22 (2006.01); B01J 31/38 (2006.01); C08G 63/672 (2006.01); C08K 5/00 (2006.01)
CPC B01J 31/38 (2013.01) [B01J 31/2213 (2013.01); C08G 63/672 (2013.01); C08K 5/005 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A titanium catalyst, having a chemical structure shown as Formula (I) or Formula (II):

OG Complex Work Unit Chemistry
wherein each of the R1 in the Formula (I) is independently an n-propyl group, an isopropyl group, a phenyl group, a 3,5-xylyl group, a group shown as Formula (MAI), a group shown as Formula (MAII) or a group shown as Formula (MAIII):

OG Complex Work Unit Chemistry
each of the R2 in the Formula (II) is independently a methyl group, a phenyl group, a trifluoromethyl group or an ethyl group, each of the R3 in the Formula (II) is independently a hydrogen or an n-propyl group, and the R2 and the R3 are not simultaneously the methyl group and the hydrogen, respectively.