Copolyester ether film preparation method and uses thereof

• Main Authors: OU FUWEN, GUO RUOBIN
• Format: Patent
• Language: English
• Published: 28.10.2015
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The present invention provides a copolyester ether film preparation method, which comprises: providing a recovered polyester; adding diol to carry out an alcoholysis reaction with the recovered polyester so as to prepare a first intermediate product, wherein a mole ratio of the recovered polyester to the diol is 1:1.8-2.5; carrying out an ester exchange reaction on the first intermediate product so as to prepare a second intermediate product, wherein the ester exchange reaction temperature is 190-230 DEG C; adding poly diol to carry out a polymerization reaction with the second intermediate product so as to prepare the copolyester ether, wherein the copolyester ether contains 24-55% by weight of the poly diol component; and preparing the copolyester ether into the elastomeric film. According to the present invention, the film prepared according to the method is the elastomeric, waterproof and moisture permeability film, wherein the Young's modulus is 60-210 MPa, and the moisture permeability is 600-6000 g/m /day.