Sulfonated aliphatic-aromatic copolyesters and shaped articles produced therefrom
A technology of sulfonated grease and copolyester, which is applied in the field of formed articles, and can solve the problems of low heat performance and insufficiency
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[0160] experiment method
[0161] Unless otherwise specified, the following test methods were used in the following Examples and Comparative Examples.
[0162] Differential scanning calorimetry (DSC) was performed on a TA Instruments Model Number 2920 machine. The sample was heated to 300°C at a rate of 20°C / min under a nitrogen atmosphere, cooled back to room temperature at a rate of 20°C / min, and then heated to 300°C at a rate of 20°C / min. The glass transition temperature (Tg) and crystalline melting temperature (Tm) of the samples observed below are from the second heating.
[0163] Inherent viscosity (IV) is defined in "Preparative Methods of Polymer Chemistry", W.R. Sorenson and T.W. Camp Dell, 1961, p.35. It is determined by the Goodyear R-103B method at room temperature at a concentration of 0.5 g / 100 mL of a 50:50 wt% trifluoroacetic acid-dichloromethane acid solvent system.
[0164] Laboratory relative viscosity (LRV) is the ratio of the viscosity of a solution o...
Embodiment 1
[0180] To a 250 mL glass flask was added bis(2-hydroxyethyl) terephthalate (88.35 g), ethylene glycol (6.52 g), dimethyl-3-sodium isophthalate (0.74 g), Dimethyl glutarate (24.03 g), manganese (II) acetate tetrahydrate (0.042 g), and antimony (III) trioxide (0.034 g). The reaction mixture was stirred and heated to 180°C under a slow nitrogen purge. After reaching 180°C, the reaction mixture was heated to 275°C over 3.5 hours with stirring under a slow nitrogen purge. The resulting reaction mixture was stirred at 275° C. for 1 hour under a slight nitrogen purge. 8.5 g of colorless distillate were collected during this heating cycle. The reaction mixture was then evacuated to full vacuum in stages with stirring at 275°C. The resulting reaction mixture was stirred under full vacuum (pressure less than 100 mtorr) for 2.2 hours. The vacuum was then released with nitrogen and the reaction mass was allowed to cool to room temperature. An additional 12.3 g of distillate was recov...
Embodiment 2
[0184] To a 250 mL glass flask was added bis(2-hydroxyethyl) terephthalate (88.86 g), ethylene glycol (6.27 g), dimethyl-3-sodium isophthalate (0.15 g), Dimethyl glutarate (24.03 g), manganese (II) acetate tetrahydrate (0.042 g), and antimony (III) trioxide (0.034 g). The reaction mixture was stirred and heated to 180°C under a slow nitrogen purge. After reaching 180°C, the reaction mixture was heated to 275°C over 3.6 hours with stirring under a slow nitrogen purge. The resulting reaction mixture was stirred at 275° C. for 1 hour under a slight nitrogen purge. 12.8 g of colorless distillate were collected during this heating cycle. The reaction mixture was then evacuated to full vacuum in stages with stirring at 275°C. The resulting reaction mixture was stirred under full vacuum (pressure less than 100 mtorr) for 2.4 hours. The vacuum was then released with nitrogen and the reaction mass was allowed to cool to room temperature. An additional 7.0 g of distillate was recov...
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