CBDO Promotes The Development Of Biodegradable Polyester

 CBDO is an aliphatic diol, its CAS number is: 3010-96-6，and it is mainly used to synthesize high-performance polyester that can replace polycarbonate. CBDO has excellent thermal stability. In the preparation of polyester materials, it is often used as a heat-resistant modification component, which can significantly improve the glass transition temperature, weather resistance and transparency of polyester.

Haiqiang Wu, Songlin Wu ^[1] et al., Using dialkyl terephthalate as a rigid component, linear fatty dicarboxylic acid and / or its dialkyl ester and / or its dibasic anhydride as a degradation modification group Adding 2,2,4,4-tetramethyl-1,3-cyclobutanediol (CBDO) as a heat-resistant modification component, a high heat-resistant biodegradable polymer was prepared by direct esterification ester.

Because 2,2,4,4-tetramethyl-1,3-cyclobutanediol is very rigid, it can effectively suppress the activity of the polyester polymer segment, thereby improving the heat resistance of the copolyester. At the same time, the boiling point of 2,2,4,4-tetramethyl-1,3-cyclobutanediol is 210 ~ 215 ℃, the excess part can be removed in the high vacuum stage to ensure the increase of the viscosity of the reaction system.

Highly heat-resistant biodegradable polyester modified with CBDO, has both biodegradability and high heat resistance, and is common to ordinary Compared with degradable polyester, its glass transition temperature (Tg) is at least 19 ℃ higher than that before modification. Application range of biodegradable polyester.

Related links: 2,2,4,4-tetramethyl-1,3-cyclobutanediol (CBDO)

References: A high heat-resistant biodegradable polyester modified by 2,2,4,4-tetramethyl-1,3-cyclobutanediol CN111087586A