polyester film
A polyester film and polyester resin technology, applied in the field of laminated polyester film, can solve the problems of oligomer migration, whitening, curling, etc., and achieve the effects of excellent heat-resistant dimensional stability and excellent adhesion performance
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preparation example Construction
[0332] 22% by weight of the prepared polyurethane was dispersed in 78% by weight of water to prepare a first aqueous dispersion composition having a solid content of 22% by weight.
[0333] 2. Second aqueous dispersion composition
[0334] 40 moles (26 mole %) of 2,6-naphthalene dicarboxylic acid, 5 moles (3.3 mole %) of sodium 2,5-dicarboxybenzenesulfonate, 5 moles (3.3 mole %) of di Methyl terephthalic acid and 20 moles (13.3 mole %) of bis[4(2-hydroxyethoxy)phenyl]fluorene), 10 moles (6.6 mole %) of triglyceride (product of KAO CORPORATION (commodity Name 85P)) and 70 moles (46.6 moles %) of ethylene glycol were mixed and put into the reactor. The temperature of the mixture was raised from 170°C to 250°C at 1°C / min to remove water or methanol as a by-product, thereby performing an esterification reaction. The pressure in the reactor was lowered to 1 mmHg while raising the temperature to 260° C., thereby performing polycondensation while recovering diol as a by-product to ...
preparation Embodiment 1
[0338] [Preparation Example 1] Preparation of aqueous dispersion composition (1)
[0339] A composition in which the first aqueous dispersion composition and the second aqueous dispersion composition were mixed in a weight ratio of 1:9 in terms of solid content was prepared. That is, a first aqueous dispersion composition with a solid content of 0.6% by weight, a second aqueous dispersion composition with a solid content of 5.4% by weight, and a third aqueous dispersion composition with a solid content of 1.2% by weight were prepared. Composition of body curing agent.
[0340] The first aqueous dispersion composition of 2.7% by weight, the second aqueous dispersion composition of 21.6% by weight, the third aqueous dispersion solidifying agent of 1.7% by weight, the organosilicon type wetting agent (Dow Corning , polyester siloxane copolymer, OFX-5211), 0.3% by weight of colloidal silica particles with an average particle diameter of 140 nm were added to water, followed by sti...
preparation Embodiment 2
[0342] [Preparation Example 2] Preparation of aqueous dispersion composition (2)
[0343] A composition in which the first aqueous dispersion composition and the second aqueous dispersion composition were mixed in a weight ratio of 2:8 in terms of solid content was prepared. That is, a first aqueous dispersion composition with a solid content of 1.2% by weight, a second aqueous dispersion composition with a solid content of 4.8% by weight, and a third aqueous dispersion composition with a solid content of 1.2% by weight were prepared. Composition of body curing agent.
[0344] The first aqueous dispersion composition of 5.5% by weight, the second aqueous dispersion composition of 19.2% by weight, the third aqueous dispersion solidifying agent of 1.7% by weight, the organosilicon type wetting agent (Dow Corning , polyester siloxane copolymer, OFX-5211), 0.3% by weight of colloidal silica particles with an average particle diameter of 140 nm were added to water, followed by stirr...
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