Carboxyl-terminated phosphorus-containing copolyester, preparation method, halogen-free flame-retardant bio-based pressure-sensitive adhesive composed of it and application thereof
A copolyester and carboxyl-terminated technology, which is applied in the field of phosphorus-containing copolyester and its preparation and pressure-sensitive adhesive composition, can solve the problems of lack of flame retardancy and other problems
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Embodiment 1
[0058] Add 209.3g (1.04mol) of sebacic acid, 76.1g (1.00mol) of 1,2-propanediol and 34.6g of DDP (0.10mol) into the reaction vessel, and then stir the esterification reaction at 180°C for 4h under the protection of nitrogen. Add 0.1ml tetrabutyl titanate toluene solution (0.2g·ml -1 ), and the solution was heated to 220°C, polycondensed in low vacuum for 0.5h, and polycondensed in high vacuum for 4h to obtain the flame-retardant copolyester of carboxyl-terminated phosphorus-containing poly(trimethylene sebacate).
[0059] M of the copolyester w 5.9×10 3 g·mol -1 .
Embodiment 2
[0061] Add 202.2g (1.00mol) of sebacic acid, 76.1g (1.00mol) of 1,2-propanediol and 51.9g of DDP (0.15mol) into the reaction vessel, and then stir the esterification reaction at 180°C for 4h under the protection of nitrogen. Add 0.1ml tetrabutyl titanate toluene solution (0.2g·ml -1 ), and the solution was heated to 220°C, polycondensed in low vacuum for 0.5h, and polycondensed in high vacuum for 4h to obtain the flame-retardant copolyester of carboxyl-terminated phosphorus-containing poly(trimethylene sebacate).
[0062] M of the copolyester w 7.0×10 3 g·mol -1 .
Embodiment 3
[0064] Add 186.0g (0.92mol) of sebacic acid, 76.1g (0.10mol) of 1,2-propanediol and 69.3g of DDP (0.20mol) into the reaction vessel, and then stir the esterification reaction at 180°C for 4h under the protection of nitrogen. Add 0.1ml tetrabutyl titanate toluene solution (0.2g·ml -1 ), and the solution was heated to 220°C, polycondensed in low vacuum for 0.5h, and polycondensed in high vacuum for 4h to obtain the flame-retardant copolyester of carboxyl-terminated phosphorus-containing poly(trimethylene sebacate).
[0065] M of the copolyester w 7.5×10 3 g·mol -1 .
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