Laminated polyester film
A technology of polyester film and polyester resin, applied in polyester coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of inability to obtain adhesion, boiling resistance adhesion, etc., and achieve boiling resistance transparency Excellent, excellent visibility effect
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[0206] The present invention will be described more specifically based on examples. However, the present invention is not limited to the following examples.
[0207] In addition, the synthesis method of the acryl-urethane copolymer resin and the polyester resin which has a naphthalene skeleton is shown in the reference example.
reference example 1
[0209] Preparation of aqueous dispersion of acrylic-urethane copolymer resin (a-1)
[0210] Under a nitrogen atmosphere and at room temperature (25° C.), 66 parts by weight of a polyester-based urethane resin (“HYDRAN” (registered trademark) AP-40(F) manufactured by DIC Corporation) and Solution 1 was obtained with 35 parts by weight of methyl methacrylate, 29 parts by weight of ethyl acrylate, and 2 parts by weight of N-methylolacrylamide. Next, 7 parts by weight of an emulsifier ("Riasopu" ER-30 manufactured by ADEKA Corporation) was added, and water was further added so that the solid content of the solution would become 50% by weight, whereby a solution 2 was obtained. At normal temperature (25°C), 30 parts by weight of water was added to the container 2, and the temperature was raised to 60°C. Thereafter, solution 2 was continuously dropped into container 2 over 3 hours while stirring. Furthermore, 3 parts by weight of a 5% by weight potassium persulfate aqueous solutio...
reference example 2
[0213] Preparation of aqueous dispersion of polyester resin (b-1) having naphthalene skeleton
[0214] Aqueous dispersion of polyester resin with the following copolymer composition
[0215]
[0216] (dicarboxylic acid component)
[0217] Dimethyl 2,6-naphthalene dicarboxylate: 88 mol%
[0218] Sodium 5-dimethyl sulfoisophthalate: 12 mol%
[0219] (glycol component)
[0220] A compound obtained by adding 2 moles of ethylene oxide to 1 mole of bisphenol S: 86 mol%
[0221]1,3-Propanediol: 14 mol%.
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