[EN] COPOLYESTERS CONTAINING NEOPENTYL GLYCOL AND 2,2,4,4-TETRAALKYL-1,3-CYCLOBUTANEDIOL<br/>[FR] COPOLYESTERS CONTENANT DU NÉOPENTYLGLYCOL ET DU 2,2,4,4-TÉTRAALKYL-1,3-CYCLOBUTANEDIOL
申请人:EASTMAN CHEM CO
公开号:WO2014066296A1
公开(公告)日:2014-05-01
There is provided a copolyester containing residues of neopentyl glycol, 2,2,4,4-tetraalkyl-1,3-cyclobutanediol such as 2,2,4,4-tetramethyl-1,3- cyclobutanediol, tin atoms, aluminum atoms, an alkali or alkaline earth metal atoms such as lithium atoms, optionally phosphorus atoms, and having an intrinsic viscosity (It.V.) of at least 0.55 dL/g and glass transition temperature (Tg) of at least 90 °C. Such higher It.V. copolyesters can now be made having a high Tg, good thermal stability, and a higher insertion of 2,2,4,4-tetraalkyl- 1,3-cyclobutanediol.